JP6076149B2 - Broadcast program management device, broadcast program playback device, and program - Google Patents

Description

  The present invention relates to a broadcast program management device, a broadcast program playback device, and a program.

  With the development of storage technology, it has become possible to store a large amount of files. As a technique for accumulating broadcast program files and viewing past broadcast programs, for example, Non-Patent Document 1 discloses a time-shift zapping viewing service. This service is a video-on-demand service that allows a viewer to search for past broadcast programs that the viewer wants to watch while jumping in the time direction (for example, one hour ago or one day ago).

  The number of past program files increases day by day. When such a service is implemented, even if the number of reproducible files increases, the program of the zapping destination starts as quickly as possible without being affected by it. This is important in terms of user convenience. Therefore, it is necessary to be able to access the program files at high speed regardless of the number of program files to be stored and the storage capacity. In addition, an interface that can acquire data such as video and audio necessary for browsing a huge amount of past broadcast programs as easily as possible is required so that browsing applications using past broadcast programs can be easily developed. Become.

  Thus, for example, there is a file system disclosed in Non-Patent Document 2 as a technique for accumulating broadcast programs and enabling access from the accumulated files to each frame using the broadcast time. In the technique of Non-Patent Document 2, a single storage system is logically configured by distributed storage nodes, and broadcast programs (video and audio files) and related data (for example, subtitle data, program information files, sub audio) File). Since this file system can map the accumulated file to the broadcast time, even if the file is divided into program units or the like, for example, by designating the broadcast time, if it is a video, one video file As accessible. Furthermore, in this file system, even if the disk capacity is insufficient, the disk capacity can be increased by adding storage nodes as necessary. Even if a disc is added or a program file is newly accumulated, the user can always access the same file without worrying about them, so that newly stored broadcast program data can be stored. Can be acquired.

  Japanese Patent Application Laid-Open No. 2004-228561 discloses a technique that allows playback of moving image content to be started “from the part where it was stopped” while browsing the zapping history in reverse order during browsing by zapping. With the technology of Patent Document 1, zapping resume information is stored in a last-in first-out stack, thereby speeding up the time until the start of video playback and improving the convenience of video browsing by zapping. Can do.

On the other hand, hyperlinks have long been proposed as a method of associating and using other contents with certain contents. Currently, the most used hyperlinks are from the World Wide Web. In the WWW, content is described in a text description format called HTML (Hyper Text Markup Language), and the HTML document is displayed in a viewable manner by a program called a web browser corresponding to the HTML document. In an HTML document, link information can be described for a character string of text data in content. In this link information, the URL (Uniform Resource Locator: description method for specifying the content by the server address and file name storing the file) of the content to be associated is described. When a character string in which link information is described in an HTML document being browsed by a user is clicked by a user interface such as a mouse, the web browser displays the content of the URL described in the link information (HTML document). ) Is read and displayed. Thus, in the WWW, an HTML document can be browsed by a hyperlink from the HTML document to the HTML document.
As link information described in the HTML document, URLs such as still image files, audio files, and moving image files can be described in addition to URLs to HTML document files. As a result, the user can browse through the related contents of interest (zapping) one after another from the description content of the HTML document currently being browsed by using the web browser.

  However, since WWW is a method developed based on hyperlinks of text documents, it is insufficient as a hyperlink function for voice and moving images. For example, in WWW, while watching a moving image, it is not possible to jump to another moving image related to the object of interest being viewed. For example, if you are watching a video and want to see another video of an actor on it, you can't jump to other related videos right away. In WWW, it is only possible to return to the HTML document that is the link source of the moving image and select the link destination of another moving image file described in the document. In this case, it is sufficient that a link to the moving image of interest exists in the returned HTML document, but if there is no link, it is necessary to search using some other means such as a search means.

  In addition to the WWW, there is a technique for realizing a hyperlink between moving images (see, for example, Patent Document 2). In Patent Document 2, when it is detected that a user has clicked on an object in a moving image of interest, a method of switching to a linked moving image based on a database of operation association rules is used. Hyperlinks between video segments can be determined by changing the database association rules. However, Patent Document 2 does not describe a specific method such as how to store and use a moving image file and how to use link information.

  On the other hand, in order to realize a hyperlink between video and audio, there is a problem of how to generate link information. Therefore, there is a system in which metadata created by individual viewers is disclosed and the metadata is shared by many users (see, for example, Patent Document 3). By using this system, the metadata created by other users who have the same content (for example, “player A is active” from time t to time s) when playing the content he owns. Etc.) can be used.

  Various other methods for automatically extracting metadata from video and audio have been developed. In addition, various metadata storage formats are used, including proprietary formats. As a standardized metadata description method, there is MPEG (Moving Picture Experts Group) -7 (ISO / IEC 15938). In MPEG-7, a description method for storing metadata as a file in XML (extensible markup language) format is standardized. In general, including MPEG-7, metadata is stored as one metadata file for files such as audio files and moving image files. Therefore, in order to use metadata of a plurality of moving images such as a moving image search and a hyperlink between moving images, it is necessary to handle many related metadata files in a unified manner.

  Search technology using keywords from a large number of documents has been developed. For example, Non-Patent Document 3 describes a search technique used in a search service on the Internet. Many search technologies including this search service have the following structure. First, a document is collected and a unique document ID (docID) is assigned. Next, keywords in each document are extracted. Thereby, a database capable of searching for keywords included in the document from docID can be constructed. Next, a database called an inverted index is constructed from this database. The transposed index is a table from which a list of docIDs including the keyword can be acquired from the keyword. By using this inverted index database, it is possible to obtain a list of documents including the keyword that the user is looking for. Furthermore, in the Internet search such as the search service described in Non-Patent Document 3, since there are many documents including keywords, the ranking is presented to the user. As described above, in order to search a document including a keyword requested by a user from a large number of documents at high speed, a database using an inverted index is constructed.

JP 2010-130409 A Special table 2003-504952 gazette JP 2004-193871 A

Shinya Takeuchi and three others, “Examination of caching control method for time-shift zapping viewing service”, 2012 IEICE General Conference, March 2012, Communication Lecture 2, B-6-9, p. 9 Yutaka Kaneko and three others, "Distributed file system that can access frame data using broadcast time", FIT2012 (11th Information Science and Technology Forum), August 2012, Proceedings, 4th volume, L -023, p. 173-174 Keisuke Nishida, “Technology that Supports Google,” Technical Review, 2008, p. 24-33

  Due to the increased capacity of recording devices, it is becoming possible to continue recording all broadcast programs to be broadcast in the future and to browse past broadcast programs at any time. When a large number of past broadcast programs are browsed by narrowing down an interest, it is assumed that a large number of broadcast programs related to the same interest are found. In order to select the broadcast program that the viewer wants to watch from among the found programs, it is effective to select while viewing the video of the broadcast program by zapping rather than selecting the program while checking the list of found broadcast programs. Conceivable. In addition, as described above, except for WWW based on text documents, browsing technology using hyperlinks such as video and audio has been proposed for a long time, but it is still realized as a general technology. It has not been.

  The present invention has been made in consideration of such circumstances, and allows a viewer to browse a broadcast program while zapping at high speed by narrowing down an interest from a large number of recorded broadcast programs in the past. A broadcast program management device, a broadcast program playback device, and a program are provided.

[1] One aspect of the present invention is a program data storage unit that stores broadcast program data, a time database storage unit that stores a list of tag names corresponding to a time range of broadcast times, and a broadcast that corresponds to tag names. A tag database storage unit that stores a list of time ranges of time, and information on search targets and broadcast times are received, and when the search target is data of broadcast programs, the broadcast program at the received broadcast time is received. When data is read from the program data storage unit and output, and the search target indicates a tag list, the data is stored in the time database storage unit corresponding to the time range including the received broadcast time. When the list of tag names is read out and output, and the search target indicates a tag name, the tag name is stored in the tag database storage unit corresponding to the tag name. And a read interface unit that reads and outputs a time range that is temporally adjacent to the time range including the received broadcast time in the list of time ranges. .
According to this aspect, when the search target indicates broadcast program data, the broadcast program management device reads out and outputs the broadcast program data at the specified broadcast time from the program data storage unit, and the search target is a tag. When the list is shown, a list of tag names corresponding to the time range including the designated broadcast time is read from the time database storage unit and output. In addition, when the search target indicates a tag name, the broadcast program management device includes a designated broadcast time from a list of broadcast time ranges stored in the tag database storage unit corresponding to the tag name. The time range adjacent to the time range to be read is read out and output.
Thus, the broadcast program management device provides data such as video of the broadcast program at the designated broadcast time to the broadcast program playback device used by the viewer to browse the broadcast program, and the tag at the broadcast time. Provide a list of names. When the viewer designates a tag name from the provided list of tag names, the broadcast program management device displays the broadcast program currently being viewed by the viewer in the time range related to the designated tag name. A past or future time range that is temporally adjacent to the time range including the portion is provided to the broadcast program reproducing device. The broadcast program management device receives the broadcast time based on the provided time range from the broadcast program playback device, thereby allowing the broadcast program playback device to transfer data such as video of other broadcast programs related to the specified tag name. provide. Therefore, the broadcast program management apparatus enables the viewer to browse the broadcast programs related to the object of interest specified by the tag name while zapping in the order adjacent in time.

[2] One aspect of the present invention is the broadcast program management device described above, wherein the program data storage unit stores the data of the broadcast program for each channel, and the time database storage unit is a time of broadcast time. A tag name list corresponding to the range is stored for each channel, the tag database storage unit stores a list of broadcast time ranges corresponding to the tag name for each channel, and the read interface unit is a channel search unit. When the target and the broadcast time information are received and the search target is broadcast program data, the broadcast program data at the broadcast time of the channel is read out from the program data storage unit and output, When the search target indicates a tag list, the time data corresponding to the channel and the time range including the broadcast time is included. When the tag name list stored in the database storage unit is read and output, and the search target indicates a tag name, the tag database storage unit stores the tag name corresponding to the channel and the tag name. A time range that is temporally adjacent to a time range that includes the received broadcast time is read and output from the list of time ranges that are received.
According to this aspect, when the search target indicates broadcast program data, the broadcast program management device reads out the broadcast program data at the designated broadcast time of the designated channel from the program data storage unit and outputs it. When the search target indicates a tag list, a list of tag names corresponding to the designated channel and the time range including the designated broadcast time is read from the time database storage unit and output. In addition, when the search target indicates a tag name, the broadcast program management device is designated from the list of time ranges stored in the tag database storage unit corresponding to the designated channel and the designated tag name. The time range adjacent to the time range including the broadcast time is read and output.
According to this aspect, the broadcast program management device provides the broadcast program playback device with data such as video of the broadcast program at the specified broadcast time of the specified channel, and the tag name of the channel and the broadcast time. Provide a list. When the viewer designates a tag name from the provided list of tag names, the broadcast program management device displays the time range related to the designated tag name of the channel to be searched by the current viewer. A past or future time range is provided to the broadcast program reproducing apparatus rather than the portion related to the designated tag name in a broadcast program.

[3] One aspect of the present invention is the above-described broadcast program management apparatus that receives tag information indicating a tag name and a time range, and an instruction for addition or deletion, and when the instruction is addition When the time range indicated by the tag information is registered in the tag database storage unit in association with the tag name indicated by the tag information, and the instruction is deletion, the tag name indicated by the tag information A tag database update unit that deletes the time range indicated by the tag information from the list of time ranges stored in the tag database storage unit in association with the tag information; The tag name indicated by the tag information is registered in the time database storage unit in association with the time range indicated, and when the instruction is deletion, the time range indicated by the tag information And a time database update unit that deletes the tag name indicated by the tag information from the list of tag names stored in the time database storage unit in association with each other.
According to this aspect, when receiving an instruction to add tag information, the broadcast program management device registers the time range indicated by the tag information in the tag database storage unit in association with the tag name indicated by the tag information, Further, the tag name indicated by the tag information is registered in the time database storage unit in association with the time range indicated by the tag information. In addition, when receiving an instruction to delete tag information, the broadcast program management device associates a time range indicated by the tag information from a list of time ranges stored in the tag database storage unit in association with the tag name indicated by the tag information. And the tag name indicated by the tag information is deleted from the list of tag names stored in the time database storage unit in association with the time range indicated by the tag information.
Thereby, the broadcast program management apparatus can receive the tag information to be deleted or added, and update the data stored in the tag database storage unit and the data stored in the time database storage unit.

[4] According to one aspect of the present invention, a storage unit that stores broadcast time information, a display unit that displays video, information on a search target that indicates broadcast program data at predetermined time intervals, and the storage unit The broadcast time information read from the broadcast program management device is output to the broadcast program management device, and the broadcast program data returned from the broadcast program management device is displayed on the display unit, and the broadcast program data acquisition is performed. A broadcast time updating unit that updates information on the broadcast time stored in the storage unit to a broadcast time at which display of the data of the broadcast program ends when display of the data of the broadcast program acquired by the unit ends. The information to be searched for indicating a tag list and the broadcast time information read from the storage unit are output to the broadcast program management device, and the broadcast time information returned from the broadcast program management device is output. A tag list acquisition unit for displaying a list of tag names on the display unit, and a search target indicating a tag name selected by a viewer from the list of tag names displayed on the display unit by the tag list acquisition unit The information and the broadcast time information read from the storage unit are output to the broadcast program management device, and the time range including the broadcast time in the time range of the broadcast time corresponding to the tag name is temporally A time list acquisition unit that receives an adjacent time range from the broadcast program management device and updates the information on the broadcast time stored in the storage unit with the broadcast time of the display destination obtained from the received time range; , A broadcast program reproducing apparatus comprising:
According to this aspect, the broadcast program playback device reads out the broadcast program data at the broadcast time stored in the storage unit from the broadcast program management device and displays the data on the display unit, and the display of the acquired broadcast program data ends. In this case, the stored broadcast time information is updated with the broadcast time when the display is finished. Further, the broadcast program playback device displays a list of tag names read from the broadcast program management device on the display unit based on the stored broadcast time information. When receiving the tag name selected by the viewer from the displayed list of tag names, the broadcast program playback device broadcasts from the time range stored in the broadcast program management device corresponding to the selected tag name. A time range adjacent to the time range including the time information is read out. The broadcast program reproducing device updates the stored broadcast time information based on the read time range.
Thus, the broadcast program playback device reads out and displays data such as video of the broadcast program corresponding to the broadcast time from the broadcast program management device, and displays a list of tag names corresponding to the portion of the broadcast program being displayed. Read from the broadcast program management device and display. Then, when the viewer selects a tag name from the displayed list of tag names, the broadcast program playback device displays the broadcast program currently being viewed by the viewer in the time range related to the selected tag name. A past or future time range that is temporally adjacent to the time range including the portion is read from the broadcast program management device. The broadcast program reproduction device updates the broadcast time based on the read time range, reads out data such as video of the broadcast program corresponding to the updated broadcast time from the broadcast program management device, and displays the data. Therefore, the viewer can browse the portion of the broadcast program related to the object of interest specified by the tag name while zapping in the order adjacent in time.

[5] One aspect of the present invention is the above-described broadcast program playback device, wherein the time list acquisition unit causes the display unit to display data on a broadcast time of a display movement destination obtained from the received time range. While the broadcast program is included in the broadcast range of the broadcast program, the broadcast program management device displays information to be searched for indicating the tag name selected by the viewer and broadcast time information of the display destination. And receiving from the broadcast program management device a time range that is temporally adjacent to a time range that includes the broadcast time of the display destination among the time range of the broadcast time corresponding to the tag name, It is characterized by that.
According to this aspect, the broadcast program playback device receives the received time range when the time range received from the broadcast program management device is included in the program broadcast time range of the broadcast program whose data is currently displayed on the display unit. The time range corresponding to the selected tag name is read again from the broadcast program management device using the time included in the.
Thereby, the broadcast program management device acquires a time range of a part corresponding to the selected tag name for a broadcast program different from the broadcast program that is currently being browsed by the viewer, and the broadcast program in the time range is acquired. Data can be read from the broadcast program management device and displayed. Thus, the viewer can browse different broadcast programs related to the object of interest specified by the tag name while zapping in order of time adjacency.

[6] One aspect of the present invention is the broadcast program reproduction device described above, wherein the broadcast program data acquisition unit displays data on the display unit, the broadcast time at which reproduction of the broadcast program starts and the broadcast at which reproduction ends. A viewing history recording unit for recording time is further provided, and the time list acquisition unit includes a broadcast time of a display destination obtained from the received time range from the broadcast time of the reproduction start recorded by the viewing history recording unit. While included by the broadcast time of the end of reproduction or not included, information on the search target indicating the tag name selected by the viewer and broadcast time information on the display destination are displayed on the broadcast program. Output to the management device, and receive from the broadcast program management device a time range that is temporally adjacent to a time range that includes the broadcast time of the display destination among the broadcast time range corresponding to the tag name It is characterized by repeating.
According to this aspect, the broadcast program reproduction device can be used when the time range received from the broadcast program management device is included in a broadcast program browsed by the viewer in the past, or in a broadcast program that the viewer has not browsed yet. If included, the time range corresponding to the selected tag name is read again from the broadcast program management device using the time included in the received time range.
Thereby, the broadcast program management device corresponds to the selected tag name, and the time range of the part of the broadcast program that has not been browsed by the viewer in the past, or the time of the part of the broadcast program that has been browsed by the viewer in the past The range can be acquired from the broadcast program management device, and the data of the broadcast program in the time range can be read from the broadcast program management device and displayed. Therefore, the viewer can temporally select a part of the broadcast program related to the object of interest specified by the tag name only for the broadcast program browsed in the past or only for the broadcast program that has not been browsed in the past. You can browse while zapping in the adjacent order.

[7] One aspect of the present invention is the broadcast program playback device described above, wherein the storage unit further stores information on a channel to be browsed, and the broadcast program data acquisition unit broadcasts at predetermined time intervals. The search target information indicating program data, the information on the channel to be browsed read from the storage unit and the information on the broadcast time are output to a broadcast program management device, and the channel at the broadcast time at the broadcast time is output. Broadcast program data is received from the broadcast program management device and displayed on the display unit, and the tag list acquisition unit includes search target information indicating the tag list and the channel to be browsed read from the storage unit. Information and the broadcast time information are output to the broadcast program management device, and a list of tag names at the broadcast time of the channel to be browsed is displayed in the broadcast program management device. The time list acquisition unit receives the information from the device and displays the information on the search target indicating the tag name selected by the viewer, the information on the channel to be searched, and the read from the storage unit The broadcast time information is output to the broadcast program management device, and the time adjacent to the time range including the broadcast time in the time range of the broadcast time corresponding to the search target channel and the tag name The range is received from the broadcast program management device, and the broadcast time information stored in the storage unit is updated with the broadcast time of the display destination obtained from the received time range, and the received time range The information on the channel to be browsed stored in the storage unit is updated with the information on the channel to be searched corresponding to the information.
According to this aspect, the broadcast program playback device reads the broadcast program data corresponding to the information about the channel to be viewed and the broadcast time stored in the storage unit from the broadcast program management device, displays the data on the display unit, and acquires the broadcast program data. When the display of the broadcast program data is finished, the stored broadcast time information is updated with the broadcast time when the display is finished. Further, the broadcast program playback device causes the display unit to display a list of tag names read from the broadcast program management device based on the stored information about the channel to be browsed and the broadcast time. When the broadcast program playback device receives the tag name selected by the viewer from the displayed tag name list, the time range stored in the broadcast program management device corresponding to the channel to be searched and the selected tag name The time range that is adjacent in time to the time range including the broadcast time information is read out. The broadcast program reproducing device updates the stored broadcast time information and the channel to be browsed based on the read time range.
As a result, the broadcast program playback device reads out and displays data such as video of the broadcast program of the channel to be browsed from the broadcast program management device and broadcasts a list of tag names corresponding to the portion of the broadcast program being browsed. Read from the program management device and display. When the viewer selects a tag name from the displayed tag name list, the broadcast program playback device displays the time range related to the selected tag name of the channel to be searched by the current viewer. A past or future time range is read from the broadcast program management device with respect to the portion related to the tag name of the broadcast program being broadcast. The broadcast program reproduction device updates the broadcast time based on the read time range, reads out data such as video of the broadcast program of the search target channel corresponding to the updated broadcast time, and displays the data. Thus, the viewer can browse the broadcast program related to the object of interest specified by the tag name by zapping while moving between channels.

[8] According to one embodiment of the present invention, a computer used in a broadcast program playback device including a display unit that displays a video is stored in a storage unit that stores broadcast time information. The broadcast program that outputs the search target information and the broadcast time information read from the storage unit to the broadcast program management device, and displays the data of the broadcast program returned from the broadcast program management device on the display unit The data acquisition unit, and the broadcast program data that has been displayed, the broadcast time data stored in the storage unit when the display of the data of the broadcast program acquired by the broadcast program data acquisition unit is completed. A broadcast time update unit that updates the time, search target information indicating a tag list, and the broadcast time information read from the storage unit are output to the broadcast program management device, and the broadcast number A tag list acquisition unit for displaying a list of tag names at the broadcast time returned from the management device on the display unit, and a viewer from the list of tag names displayed on the display unit by the tag list acquisition unit. The search target information indicating the selected tag name and the broadcast time information read from the storage unit are output to the broadcast program management device, and the broadcast time in the broadcast time range corresponding to the tag name Of the broadcast time stored in the storage unit according to the broadcast time of the display movement destination obtained from the received time range. It is a program that functions as a time list acquisition unit that updates information.

  According to the present invention, it is possible for a viewer to browse a broadcast program while zapping at a high speed by narrowing down an object of interest from a large number of recorded past broadcast programs.

It is a functional block diagram of the broadcast program management apparatus by one Embodiment of this invention. It is a figure which shows the data structure of the tag information by the embodiment. It is a figure which shows the data structure of the time information by the embodiment. It is a figure which shows the relationship between tag information, tag DB, and time DB by the embodiment. It is a figure which shows the example of DB update at the time of tag information addition by the embodiment. It is a figure which shows the example of DB update at the time of tag information deletion by the embodiment. It is a figure which shows the example of the file accumulate | stored in the file storage part by the embodiment. It is a figure for demonstrating the read function by the embodiment. It is a figure which shows the data structure at the time of storing the data read by the read function by the embodiment. It is a flowchart which shows operation | movement of the tag DB update process of the tag DB update part by the embodiment. It is a flowchart which shows operation | movement of the time DB update process of the time DB update part by the embodiment. It is a figure which shows the example of the file provided by the read interface part by the embodiment. 4 is a flowchart showing an operation of a data read process of a read interface unit according to the embodiment. It is a figure which shows the structure of the broadcast program browsing system using the broadcast program management apparatus by the embodiment. It is a figure which shows the operation input part with which the operation interface by the embodiment is provided. It is a figure for demonstrating the operation example of the broadcast program browsing system by the embodiment. It is a figure which shows the example of a display of the broadcast program reproduction apparatus by the embodiment. 4 is a flowchart showing an operation of a reproduction process of a reproduction processing unit according to the same embodiment. It is a flowchart which shows the operation | movement of the jump destination broadcast time acquisition process of the reproduction | regeneration processing part by the embodiment. It is a flowchart which shows the operation | movement of the jump destination broadcast time acquisition process of the reproduction | regeneration processing part by the embodiment. It is a flowchart which shows the operation | movement of the jump destination broadcast time acquisition process of the reproduction | regeneration processing part by the embodiment. It is a flowchart which shows the operation | movement of the jump destination broadcast time acquisition process of the reproduction | regeneration processing part by the embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Overview of Broadcast Program Management Device]
FIG. 1 is a functional block diagram of a broadcast program management apparatus 1 according to an embodiment of the present invention. As shown in the figure, the broadcast program management device 1 includes a tag database storage unit 11, a time database storage unit 12, a file storage unit 13 (program data storage unit), a tag database update unit 14, a time database update unit 15, and The read interface unit 16 is configured. Hereinafter, “database” is referred to as “DB”.

  The tag DB storage unit 11 stores a tag DB including data in which a tag name is associated with a time range list. In the time range, the broadcast program part related to the tag name is described as the start broadcast time of the part (hereinafter referred to as “start time”) and the end broadcast time (hereinafter referred to as “end time”). ). The time DB storage unit 12 stores a time DB including data in which a time range is associated with a list of tag names related to broadcast program parts in the time range. The file storage unit 13 stores files such as video data and audio data necessary for browsing broadcast programs.

  The broadcast program management device 1 receives the tag information of the broadcast program together with the add command or the delete command via the tag DB update unit 14. The tag DB update unit 14 updates the tag DB stored in the tag DB storage unit 11 based on the input tag information. The time DB update unit 15 updates the time DB stored in the time DB storage unit 12 based on the tag information input to the tag DB update unit 14. The read interface unit 16 reads data from the tag DB storage unit 11, the time DB storage unit 12, and the file storage unit 13 through a common interface.

[Description of tag information data structure]
The tag information input to the broadcast program management apparatus 1 according to the present embodiment includes at least three pieces of data: a start time, an end time, and a tag name. That is, the tag information indicates that the broadcast time in the range from the start time to the end time is associated with the “tag name”. In other words, the portion of the broadcast program in the time range from the start time to the end time is related to the content indicated by the tag name.
The tag information may be created by a user as described in Patent Document 3, for example, or may be created by various metadata automatic extraction methods that have already been developed. As described above, in the present embodiment, tag information generated by an arbitrary method can be used. Therefore, the tag information generation method is not particularly concerned.

  FIG. 2 is a diagram illustrating a data structure of tag information in the present embodiment. As shown in the figure, the tag information includes information of a 64-bit start time, a 64-bit end time, and a tag name of variable-length text data. In the following description, in order to identify the tag name, the tag name is written with “#” (pound sign) at the beginning, and the tag information is written as “(start time, end time, #tag name)”. To do.

[Explanation of data structure of time information]
FIG. 3 is a diagram illustrating a data structure of time information used in the present embodiment. In the present embodiment, as the data structure of the time information, as shown in the figure, data having a 64-bit length used in Non-Patent Document 2 is used. The time information shown in the figure includes information on a modified Julian date (MJD) having a 20-bit length, a time zone (TZ) having a 6-bit length, and a PTS (Presentation Time Stamp) having a 33-bit length. MJD represents date information digitized by the modified Julian date, the time zone represents a region on the earth, and the PTS represents a counter value of 90 KHz, where 0 is 00:00:00 on the day. Information indicating the broadcast time (start time and end time) in the tag information, information indicating the broadcast time (start time and end time) in the tag DB, information indicating the broadcast time in the time DB, and the interface used by the read interface unit 16 The time information having the data structure shown in the figure is used for the broadcast time information. Thereby, the date and time for each time zone can be specified with an accuracy of 90 KHz (about 11 nanoseconds).

[Description of DB]
Inside the broadcast program management device 1, a tag DB and a time DB are constructed. These DBs are constructed by the tag DB update unit 14 and the time DB update unit 15 based on tag information input to the broadcast program management apparatus 1 from the outside.

FIG. 4 is a diagram illustrating a relationship between tag information, a tag DB stored in the tag DB storage unit 11, and a time DB stored in the time DB storage unit 12.
FIG. 4A is a diagram showing the relationship of tag information input to the broadcast program management device 1. In the figure, three pieces of tag information (t1, t3, #A), (t4, t5, #A), (t7, t11, #A) related to the tag name A (#A) input to the broadcast program management device 1 are displayed. ), Two tag information (t1, t2, #B), (t6, t9, #B) related to the tag name B (#B), and one tag information (t8, t9) related to the tag name C (#C) , #C).

  FIG. 4B is a diagram showing a tag DB constructed in the tag DB storage unit 11 based on the tag information shown in FIG. When the tag information shown in FIG. 4 (a) is input to the broadcast program management device 1, as shown in FIG. 4 (b), the tag DB includes time ranges for the tag names #A, #B, and #C. A list of (a set of start time and end time) is recorded in order of oldest time (smaller time information) so that there is no time overlap. By using this tag DB, it is possible to quickly search from the tag name to which time range the tag name is associated.

  FIG. 4C is a diagram showing a time DB constructed in the time DB storage unit 12 based on the tag information shown in FIG. As shown in FIG. 4C, a list of tag names in each time range is recorded in the time DB storage unit 12 in the order of oldest time (smaller time information). In the figure, #A and #B are associated with the time range from time t1 to time t2, and #A is associated with the time range from time t2 to time t3. It indicates that no tag is associated with the time range from time t3 to time t4. By using this time DB, it is possible to quickly search what tag is associated with a certain broadcast time, that is, what tag is related to a part of a broadcast program at a certain broadcast time. .

[Description of file storage unit 13]
The file storage unit 13 is a device that stores files of data such as video and audio necessary for browsing broadcast programs. The file storage unit 13 also stores files of related data such as caption data and a program guide.

  In this embodiment, the distributed file system described in Non-Patent Document 2 is used as the file storage unit 13. In this distributed file system, a plurality of stored files can be logically handled as one file, and data in units of frames can be read from the logical file according to time. This logical file can be accessed using the same interface (for example, the pre-read function described later) as the interface used when an OS (operation system) file system mounted on a normal personal computer or the like accesses the file. .

  FIG. 7 is a diagram illustrating an example of a logical file of program files stored by the file storage unit 13. In the figure, an example of a list of files in the directory is shown for each of the cases where the directory (folder) name is “@ ch1” and “@ ch2”. “@ Ch1” and “@ ch2” represent broadcast channels, the “@ ch1” directory contains files related to the “Channel 1” broadcast program, and the “@ ch2” directory contains the “Channel 2” broadcast program. It is assumed that there are files related to. In the example shown in the figure, in the “@ ch1” directory, a video file “video.h264”, an audio file “audio.aac”, an auxiliary audio file “audio_sub.aac”, a subtitle file “caption.txt”, a program table There are five files “program.txt”. In the “@ ch2” directory, the video file “video.h264”, the audio file “audio.aac”, the subtitle file “caption.txt”, and the program guide There are four files “program.txt”.

FIG. 8 is a diagram for explaining a pred function used for reading data. Data can be read from the file shown in FIG. 7 by the pre-read function shown in FIG. The pred function has four arguments, file, buf, size, and tst.
The argument file is the file name of the file to be read. For example, when the data of the video file of channel 1 is to be read, the directory representing the channel 1 and the name of the video file regardless of the broadcast program or the broadcast time. And “/@ch1/video.h264” is designated. The argument buf indicates the start address of the memory area for storing the read data, and the argument size specifies the area size of the memory reserved for the memory area specified by the argument buf. The argument tst designates the broadcast time for reading data from the file designated by the argument file. The time information shown in FIG. 3 is used for the argument tst.

FIG. 9 is a diagram showing a data structure when storing data read by the read function shown in FIG. The read interface unit 16 stores the data read by the read function in the memory area specified by the head address by the argument buf. As shown in the figure, the start time and end time of the portion of the file corresponding to the read data and the data length of the read data are stored in the first 32 bytes of the memory area specified by the argument buf. Subsequently, the data of the read file is stored.
As described above, in the present embodiment, the data at the specified time can be read from the file related to the broadcast program stored in the file storage unit 13 by using the pred function.

  Note that the file storage unit 13 of the present embodiment is not limited to the distributed file system of Non-Patent Document 2, but a video file, audio file, sub audio file, subtitle file, program guide file of a specified channel at a specified time. As long as a file related to a broadcast program can be read, a file system used in a general personal computer or the like may be used.

[Description of Operation of Tag DB Update Unit 14]
Next, the update operation of the tag DB when a tag information addition command or a tag information deletion command that has already been input is input to the broadcast program management device 1 will be described. The tag DB update unit 14 updates the tag DB. The tag DB storage unit 11 stores a tag DB for each channel, and the tag DB update unit 14 performs the following processing for each channel.

  FIG. 10 shows a flowchart of the operation of the tag DB update process of the tag DB update unit 14. 5 and 6 are diagrams for explaining a specific operation of the tag DB update unit 14. The operation of the tag DB update unit 14 shown in FIG. 10 will be described with reference to FIGS.

  When tag information is input to the broadcast program management apparatus 1 together with an addition command or a deletion command, the tag DB update unit 14 determines whether the input command is a tag information addition command or a deletion command. (Step S101). If the tag DB update unit 14 determines that the command is an addition command (step S101: YES), the tag DB update unit 14 additionally registers the time range indicated by the input tag information in the tag DB (step S102). That is, if the same tag name as the tag name of the input tag information is already registered in the tag DB, the tag DB update unit 14 has already set the time range indicated by the start time and end time of the tag information. Add to the list of registered time ranges with the same tag name. If the same tag name is not registered, the tag DB update unit 14 adds the tag name of the input tag information to the tag DB as a new tag name, and adds it to the list of time ranges corresponding to the added tag name. The time range indicated by the start time and end time of the input tag information is registered.

  FIG. 5 is a diagram showing an example of updating the tag DB when a tag information addition command is input to the broadcast program management apparatus 1 from the state of FIG. As shown in FIG. 5A, it is assumed that an instruction to add tag information (t4, t6, #B) is input to the broadcast program management apparatus 1. In this case, since the tag name “B” is already registered in the tag DB, the tag DB update unit 14 adds the time range t4-t6 indicated by the tag information to the list of time ranges corresponding to #B. . The diagram on the left side of FIG. 5B shows the state of the tag DB when the process of step S102 is completed.

  Returning to FIG. Next, the tag DB update unit 14 refers to the time ranges before and after being registered before adding the time range in step S102, and whether the added time range overlaps with the registered time range. Is determined (step S103). If the tag DB update unit 14 determines that there is no duplication (step S103: NO), the tag DB update unit 14 ends the process, and if it is determined that there is duplication (step S103: YES), performs a time range merge process (step S104). ).

  In the diagram on the left side of FIG. 5B, the newly added time range t4-t6 corresponding to #B is continuous with the already registered time range t6-t9, so the tag DB update unit 14 Merges these time ranges into t4-t9. As a result, the tag DB when the process of step S104 ends is in the state shown in the right diagram of FIG.

  When the tag information addition command is input, the tag DB update unit 14 executes the tag DB update process by the above operation.

  In step S101, when the tag DB update unit 14 determines that the input command is a delete command (step S101: NO), the tag DB update unit 14 performs the following processing. That is, the tag DB update unit 14 selects the time range indicated by the start time and end time of the input tag information from the list of time ranges registered in the tag DB in association with the tag name of the input tag information. Is deleted (step S105).

FIG. 6 shows an example of updating the tag DB when a tag information deletion command is input to the broadcast program management apparatus 1 from the state of FIG. As shown in FIG. 6A, it is assumed that a tag information (t8, t9, #C) deletion command is input to the broadcast program management device 1. FIG. 6B shows the state of the tag DB storage unit 11 after the process of step S105. That is, in FIG. 5B, the time range of the tag name #C was t8-t10, but the tag DB update unit 14 deletes the time range t8-t9 indicated by the tag information by the delete command, and the result The time range is t9-t10.
When a tag information deletion command is input, the tag DB update unit 14 executes the tag DB update process by the above operation.

[Description of Operation of Time DB Update Unit 15]
When a tag information addition command or a tag information deletion command that has already been input is input to the broadcast program management device 1, the tag DB update unit 14 executes the tag DB update process shown in FIG. The DB update unit 15 executes time DB update processing. The time DB storage unit 12 stores the time DB for each channel, and the time DB update unit 15 performs the following processing for each channel.

  FIG. 11 shows a flowchart of the operation of the time DB update process of the time DB update unit 15. Below, the example of a specific operation | movement of the time DB update part 15 shown in FIG. 11 is demonstrated using FIG. 5 and FIG.

  When tag information is input to the broadcast program management device 1 together with an addition command or a deletion command, the time DB update unit 15 determines whether the input command is a tag information addition command or a deletion command. (Step S201). When the time DB update unit 15 determines that the command is an additional command (step S201: YES), the time DB update unit 15 inputs the input to the time range of the time DB indicated by the start time and end time set in the input tag information. The tag name set in the tag information is added in association with the tag information (step S202).

  In the example shown in FIG. 5, since an instruction to add tag information (t4, t6, #B) is input to the broadcast program management apparatus 1 from the state of FIG. 4, the time DB update unit 15 performs the process shown in FIG. As shown in the figure on the left side, tag name #B is added to the time range from time t4 to time t6 in the time DB. That is, the time DB update unit 15 adds #B to the list of tag names corresponding to time t4 and time t5 already registered in the time DB. In this example, the start time t4 and the end time t6 of the new tag information that is the target of the additional command are registered in the time DB. If not registered, the tag names corresponding to these times are registered. Add a list and set a tag name.

  Returning to FIG. Next, the time DB update unit 15 determines whether or not the list of tag names overlaps in the additional time range t4-t6 (step S203). When it is determined that there is no duplication (step S203: NO), the time DB update unit 15 ends the process, and when it is determined that there is duplication (step S203: YES), the time range list merging process of the time DB Is executed (step S204).

In the example shown on the left side of FIG. 5C, the tag name list #B registered at time t5 is the same as the tag name list #B registered at time t6 adjacent to time t5. Therefore, the time DB update unit 15 merges time ranges into one. As a result, the time DB when the process of step S204 ends is in the state shown in the right diagram of FIG.
When a tag information addition command is input, the time DB update unit 15 executes time DB update processing by the above operation.

  On the other hand, when the time DB update unit 15 determines that the input command is a delete command (step S201: YES), the time DB update unit 15 falls within the time range indicated by the start time and end time set in the input tag information. Correspondingly, the tag name set in the input tag information is deleted from the list of tag names stored in the time DB (step S205).

  In the example shown in FIG. 6, since the tag information (t8, t9, #C) deletion command has been input, the time DB update unit 15 selects from the list of tag names set in the time DB corresponding to time t8. Tag name #C is deleted. The state after deletion is shown in the diagram on the left side of FIG.

After executing the deletion process (step S205), the time DB update unit 15 determines whether or not the merge process is necessary based on whether the tag name lists are not duplicated as in the case of the addition process (step S203). . When the time DB update unit 15 determines that the merge process is unnecessary (step S203: NO), the time DB update unit 15 ends the process. When the time DB update unit 15 determines that the merge process is required (step S203: YES), the time DB update unit 15 executes the merge process (step S204). To do. This is the same as the additional processing already described. For example, in the example on the left side of FIG. 6C, a list of tag names registered at time t7 and a list of tag names registered at time t8 adjacent to time t7 are “#A, #B”. The time DB update unit 15 performs a merge process. The diagram on the right side of FIG. 6C shows the result after the merge process (step S104).
When a tag information deletion command is input, the time DB update unit 15 executes time DB update processing by the above operation.

[Description of Operation of Read Interface Unit 16]
The read interface unit 16 reads the file from the file storage unit 13 and reads the data from the tag DB storage unit 11 and the time DB storage unit 12 by using a common interface using the read function shown in FIG. Run.

FIG. 12 is a diagram illustrating an example of a file provided by the read interface unit 16 when the file in the file storage unit 13 is in the state of FIG. As shown in the figure, as the files provided by the read interface unit 16, the “@ ch1” directory includes four files “% taglist”, “#A”, “#B”, and “#C”. As for the “@ ch2” directory, five files “% taglist”, “#A”, “#B”, “#K”, and “#L” are added.
The files “#A”, “#B”, “#C”, “#K”, “#L” represent the tag names #A, #B, #C, #K, #L, respectively. Information in the tag DB can be acquired by requesting the read interface unit 16 to access these logical files. Similarly, information in the time DB can be acquired by requesting the read interface unit 16 to access a logical file indicated as “% taglist”.

FIG. 13 is a flowchart showing the data read processing operation of the read interface unit 16.
When the read interface unit 16 receives an access from the outside by the read function, first, from the file name of the argument file, the file related to the broadcast program in the file storage unit 13, the tag DB in the tag DB storage unit 11, the time DB storage unit 12 It is determined which data in the time DB in the database needs to be accessed. That is, when the file name of the argument file is a file including a tag name (a file name starting with #) (step S301: YES), the read interface unit 16 determines that the request is for reading data from the tag DB, and The process of step S302 shown is executed. If the file name of the argument file is% taglist (step S301: NO and step S303: YES), the read interface unit 16 determines that the request is for reading data from the time DB, and the process of step S304 shown below Execute. When the file name of the argument file is neither a file including a tag name (a file name starting with #) nor a% taglist (step S301: NO and step S303: NO), the read interface unit 16 reads the file related to the broadcast program. It is determined that the request is an access request, and the following process of step S305 is executed.

<Description of Step S302>
When the tag name is included in the file name specified by the argument file of the preload function, the read interface unit 16 executes the process of step S302. The read interface unit 16 selects from the list of time ranges registered in the tag name corresponding time range data corresponding to the tag name specified by the file name specified by the argument file from the tag DB storage unit 11. The time range before and after the time range including the time specified by the argument tst of the preread function is read, and written to the memory area specified by the argument buf.

  For example, when the tag database of “@ ch1” is in the state of FIG. 4B, the read interface unit 1 receives an execution request for “read” (“/ @ ch1 / # A”, buf, size, t4). . The read interface unit 16 uses the time range list registered in association with #A in the tag DB of the channel indicated by “@ ch1” as the time range before “t4-t5” including the specified time t4. “T1-t3” is read, and “t7-t11” is read as a later time range. Therefore, when the broadcast program management device 1 receives an external access and executes pred (“/ @ ch1 / # A”, buf, size, t4), the read interface unit 16 sets the first 32 bytes of the argument buf. Data in a time range indicating “t1-t3” and “t7-t11” is stored in subsequent data (see FIG. 9). Further, the read interface unit 16 reads the time range “t4-t5” including the specified time t4 from the time range list stored in correspondence with #A in the tag DB of the channel indicated by “@ ch1”. , “T4” that is the start time of the read time range at the start time of the beginning (see FIG. 9) of the memory area indicated by the argument buf, and “t5” that is the end time of the read time range at the end time Is stored. As a result, the access source uses the designated time as the present, and the three time ranges of the past (t1-t3), the present (t4-t5), and the future (t7-t11) associated with the designated tag name. Can be obtained.

<Description of Step S304>
When% taglist is included in the file name of the prede function, the read interface unit 16 executes the process of step S304. The read interface unit 16 reads a list of tag names registered in the time DB corresponding to the time range including the time specified by the argument tst of the pred function from the time DB storage unit 12, and starts with the argument buf Writes to the specified memory area.

  For example, when the time DB of “@ ch1” is in the state of FIG. 4C, the read interface unit 1 receives an execution request for “read” (“/ @ ch1 /% taglist”, buf, size, t8). . The read interface unit 16 includes a time range “t8-t9” including the time t8 from the time DB of the channel indicated by “@ ch1”, and a tag name list “#A” registered in association with this time range. , #B, #C ”. Therefore, when the broadcast program management device 1 receives an external access and executes “read (“ / @ ch1 /% taglist ”, buf, size, t8), the read interface unit 16 sets the first 32 bytes of the argument buf. The subsequent tag name list “#A, #B, #C” is stored in the subsequent data (see FIG. 9). In addition, the read interface unit 16 sets “t8” that is the start time of the read time range at the start time of the top of the memory area indicated by the argument buf (see FIG. 9), and the read time range of the read time range at the end time. “T9” which is the end time is stored. Thereby, the access source can acquire the three tag names #A, #B, and #C associated with the time range t8-t9.

<Description of Step S305>
When the file name of the read function is a normal file, the read interface unit 16 executes the process of step S305. The read interface unit 16 reads a file from the file storage unit 13 by an operation similar to the conventional one. That is, the read interface unit 16 reads the data at the time specified by the argument tst in the file specified by the argument file of the read function from the file storage unit 13 and stores it in the memory area specified by the argument buf. .

[Summary of Broadcast Program Management Device 1]
As described above, the broadcast program management apparatus 1 according to the present embodiment uses the same read function as a general-purpose OS (Operation System) and uses video and audio file data necessary for browsing past broadcast programs. At the same time, it is possible to read data related to the tag. That is, it is possible to acquire the information of the associated tag from the broadcast program management device 1 in synchronization with the data necessary for viewing the program and the time information.

[Outline of broadcast program viewing system]
Next, a broadcast program browsing system using the above-described broadcast program management apparatus 1 will be described.

  FIG. 14 is a diagram showing a configuration of a broadcast program browsing system 5 according to an embodiment of the present invention. As shown in the figure, the broadcast program browsing system 5 includes a broadcast program management device 1, a broadcast program playback device 2, and an operation interface 3.

The broadcast program playback apparatus 2 includes a playback processing unit 21, an operation receiving unit 22, a display unit 23, and a viewing history recording unit 24.
The reproduction processing unit 21 may communicate with the broadcast program management device 1 via a public network such as the Internet network, or via a private network such as a LAN (Local Area Network) or a cable. The reproduction processing unit 21 includes a storage unit 211, a broadcast program data acquisition unit 212, a broadcast time update unit 213, a tag list acquisition unit 214, and a time list acquisition unit 215.

The storage unit 211 stores various types of data such as data indicating the broadcast time of a broadcast program to be browsed, data indicating information on a channel to be browsed, and data read from the broadcast program management device 1.
When the broadcast time data stored in the storage unit 211 is updated, the broadcast program data acquisition unit 212 uses the pred function to manage broadcast program management based on the channel and broadcast time stored in the storage unit 211. The apparatus 1 is requested for data related to the broadcast program. The broadcast program data acquisition unit 212 causes the display unit 23 to display the broadcast program data returned from the broadcast program management device 1. The broadcast program data acquisition unit 212 outputs audio data included in the broadcast program data by an audio output unit (for example, a speaker) (not shown).
The broadcast time update unit 213 displays data indicating the broadcast time stored in the storage unit 211 when the display of the broadcast program data displayed on the display unit 23 by the broadcast program data acquisition unit 212 is completed. Update to the broadcast time at the end of the.

  The tag list acquisition unit 214 reads a tag list corresponding to the broadcast program portion displayed on the display unit 23 from the broadcast program management device 1 and causes the display unit 23 to display the tag list. Specifically, the tag list acquisition unit 214 requests the broadcast program management device 1 for a list of tag names using the pred function based on the channel and broadcast time stored in the storage unit 211. The tag list acquisition unit 214 causes the display unit 23 to display a list of tag names returned from the broadcast program management device 1.

  The time list acquisition unit 215 reads from the broadcast program management device 1 the time range corresponding to the tag selected by the viewer from the list of tags displayed by the tag list acquisition unit 214. Specifically, the time list acquisition unit 215 corresponds to the search target channel and the tag name selected by the viewer from the list of tag names displayed by the tag list acquisition unit 214, and the storage unit A list of time ranges that are temporally adjacent to the time range including the broadcast time stored in 211 is requested to the broadcast program management device 1 by the pred function. The time list acquisition unit 215 updates the broadcast time data stored in the storage unit 211 with the time (for example, the start time) included in the time range returned from the broadcast program management device 1.

The operation receiving unit 22 receives data from the operation interface 3. Specifically, the operation receiving unit 22 receives operation information indicating an operation performed by the viewer on the operation interface 3. The communication between the operation receiving unit 22 and the operation interface 3 may use wireless communication such as infrared rays, Bluetooth (registered trademark), Wi-Fi (wireless fidelity) (registered trademark), and RS232C (Recommended Standard 232). C), wired communication such as USB (Universal Serial Bus), Ethernet (registered trademark) may be used.
The display unit 23 is a display device, for example, and displays an image.
The viewing history recording unit 24 records viewing history data indicating the history of the broadcast program viewed by the viewer. The history of the broadcast program viewed by the viewer is indicated by the broadcast time of the broadcast program whose data is displayed on the display unit 23 by the reproduction processing unit 21.

  The operation interface 3 includes an operation input unit 31 and an operation notification unit 32. The operation input unit 31 receives an operation by a viewer. As soon as the operation input unit 31 receives an operation by the viewer, the operation notification unit 32 outputs operation information indicating the operation content to the broadcast program playback device 2.

[Description of operation interface 3]
FIG. 15 is a diagram illustrating the operation input unit 31 included in the operation interface 3. As shown in the figure, the operation input unit 31 provided in the operation interface 3 of the present embodiment includes a wheel switch 312 and a selection switch 313 in addition to operation buttons 311 provided in a remote controller such as a normal television or a hard disk recorder. . The wheel switch 312 is a switch that operates as a push button simultaneously with rotation. The rotation operation of the wheel switch 312 is an instruction to move the cursor with respect to the list of tags displayed on the display unit 23 of the broadcast program playback device 2. The operation of pressing the wheel switch 312 is selection of the tag at the cursor position. The selection switch 313 is a toggle switch, and selects a jump to a broadcast program in the past direction or a jump to a broadcast program in the future direction. The selection switch 313 always holds a selection state of either the past direction or the future direction.

[Outline of operation of broadcast program browsing system 5]
FIG. 16 is a diagram for explaining an operation example of the broadcast program browsing system 5. A viewer of the broadcast program operates the broadcast program playback device 2 using the operation interface 3, and the playback processing unit 21 of the broadcast program playback device 2 displays the broadcast program on the display unit 23 according to the operation.

  When the viewer rotates the wheel switch 312 of the operation interface 3, the operation receiving unit 22 of the broadcast program reproducing device 2 receives operation information indicating the operation content. The reproduction processing unit 21 of the broadcast program reproduction device 2 causes the display unit 23 to display a list of tags acquired from the broadcast program management device 1 corresponding to the portion of the broadcast program currently displayed on the display unit 23. If the wheel switch 312 is not operated for a while, the playback processing unit 21 of the broadcast program playback device 2 deletes the display of the tag list from the display unit 23.

  In the figure, as tags related to the screen (broadcast program part) currently displayed on the display unit 23 of the broadcast program playback device 2, tag names “kayo show” (program title), “Mr. A” (performer) Name), “Mr. B” (performer name), “Mr. C” (performer name), “Let's dream” (song name), “Taro Kayo” (song name), “Hanako Aozora” (songwriter) Name) is displayed.

When the viewer rotates the wheel switch 312 of the operation interface 3 back and forth, the operation receiving unit 22 of the broadcast program playback device 2 receives operation information indicating the operation content. The playback processing unit 21 of the broadcast program playback device 2 moves the cursor representing the selection of the tag name in accordance with the direction of rotation and displays it on the display unit 23. If there are tag names that are not currently displayed, the playback processing unit 21 of the broadcast program playback device 2 scrolls and displays them. The viewer selects the tag name at the cursor position by pressing the wheel switch 312.
In this way, the viewer browses the program by the display unit 23 of the broadcast program playback device 2, and when there is an object of interest, the viewer rotates the wheel switch 312 of the operation interface 3 to display a list of tags. Move the cursor to the target tag name and press the wheel switch 312.

  When the tag name is selected, the playback processing unit 21 of the broadcast program playback device 2 reads another broadcast time having the same tag name as the selected tag name from the broadcast program management device 1, and jumps to the read broadcast time. To do. That is, the reproduction processing unit 21 reads out the broadcast program data at the read broadcast time from the broadcast program management apparatus 1 and displays the data on the display unit 23 to start reproduction of the broadcast program. At this time, the selection switch 313 designates whether to jump in the past direction or the future direction from the broadcast time that was being played back when the tag name was selected.

  FIG. 17 is a diagram illustrating a display example of the broadcast program reproducing device 2 after tag selection. The screen G1 is displayed when the viewer presses the wheel switch 312 of the operation interface 3 when the broadcast program screen of the broadcast time “Tuesday, October 9, 2012, 20:12:10” is displayed. It is a screen when a list of tag names is displayed. When the viewer rotates the wheel switch 312 of the operation interface 3 to move the cursor to the target tag name “Mr. C” and presses the wheel switch 312, the screen G <b> 2 is displayed when the selection switch 313 is in the past direction. However, if it is in the future direction, the screen G3 is displayed.

When the selection switch 313 is in the past direction, the reproduction processing unit 21 of the broadcast program reproduction apparatus 2 is tagged with the tag name “Mr. C”, and is the most broadcast time of the broadcast program viewed on the screen G1. Jump to the broadcast time of another broadcast program in the near past. That is, the reproduction processing unit 21 of the broadcast program reproduction device 2 acquires the broadcast program data at the past broadcast time that is the jump destination from the broadcast program management device 1, displays the data on the display unit 23, and starts reproduction.
Similarly, when the selection switch 313 is in the future direction, the playback processing unit 21 of the broadcast program playback device 2 is tagged with the tag name “Mr. C” and broadcasts the broadcast program being browsed on the screen G1. Jump to the broadcast time of another broadcast program in the future closest to the time. That is, the reproduction processing unit 21 of the broadcast program reproduction device 2 acquires the broadcast program data at the future broadcast time that is the jump destination from the broadcast program management device 1 and displays it on the display unit 23, and starts reproduction.

After the start of playback of the jump destination broadcast program, the viewer can further select a tag name by the wheel switch 312 of the operation interface 3. The broadcast program reproduction device 2 has the selected tag name, jumps to the past or future broadcast time closest to the broadcast time being reproduced, and reproduces the broadcast program.
In this manner, the viewer can browse the broadcast program while moving between moving images using the tag name as a hyperlink by the broadcast program browsing system 500.

[Description of Operation of Broadcast Program Reproducing Device 2]
FIG. 18 shows the flow of the reproduction processing operation of the reproduction processing unit 21 of the broadcast program reproduction apparatus 2. In viewing a broadcast program, the reproduction processing unit 21 of the broadcast program reproduction apparatus 2 operates mainly.

First, the playback processing unit 21 sets a channel and time for starting playback in the memory ch and memory tst in the storage unit 211 (step S401). These setting values may be recorded with the state of the previous playback, or may be set by a user in advance, and the method is not particularly limited.
The process after step S402 is an iterative process using a loop. The reproduction processing unit 21 repeats this loop, for example, in units of video and audio frames of the broadcast program to be reproduced. In the present embodiment, description will be made assuming that the loop is a frame time (about 33 milliseconds) of video playback.

<Operation when the viewer does not operate the wheel switch 312>
The broadcast program data acquisition unit 212 of the reproduction processing unit 21 inquires of the operation reception unit 22 whether there has been a channel change operation using the operation interface 3 (step S402). When receiving the operation information indicating the channel change operation from the operation interface 3, the operation receiving unit 22 notifies the broadcast program data acquisition unit 212 of the channel change and the response indicating the changed channel. To do. When the broadcast program data acquisition unit 212 receives a response indicating that the channel has been changed from the operation reception unit 22 (step S402: YES), the broadcast program data acquisition unit 212 rewrites the channel ch of the channel setting to the channel to be changed received by the response. (Step S403). The reproduction processing unit 21 returns to the beginning of the loop and performs the processing from step S402.

  When the broadcast program data acquisition unit 212 receives a response indicating that the channel has not been changed from the operation reception unit 22 (step S402: NO), the broadcast program data acquisition unit 212 notifies the operation reception unit 22 whether the wheel switch 312 of the operation interface 3 has been pressed. An inquiry is made (step S404).

  When the broadcast program data acquisition unit 212 receives a response indicating that the wheel switch 312 has not been pressed from the operation reception unit 22 (step S404: NO), the broadcast program data acquisition unit 212 uses the read interface unit 16 of the broadcast program management device 1 to store the memory. ch, video data of the current channel and broadcast time indicated by the memory tst are acquired (step S405). For example, when the current channel is “@ ch1”, the broadcast program data acquisition unit 212 accesses the broadcast program management device 1 and sends read (”/ @ ch1 / video.h264”, buf, size to the read interface unit 16. , Tst), and the video frame data is acquired in the memory area specified by the argument buf. The argument file is set based on the channel read from the memory ch and the file name representing the video data. The content of the memory tst is set in the argument tst, and the start address of the memory area in the storage unit 211 that is the write destination of the read data is set in the argument buf. The argument size is set according to the size of the data write destination memory area. The broadcast program management apparatus 1 performs the process of step S305 in FIG. 13 and outputs the video data at the specified time of the specified channel to the broadcast program playback apparatus 2.

  Next, the broadcast program data acquisition unit 212 reads out the video data acquired from the broadcast program management device 1 from the memory area indicated by the argument buf, outputs it to the display unit 23, and displays it (step S406). In general, since video data is encoded by a compression method, decoding processing is necessary to display the video data, but the description thereof is omitted because it is not related to the present embodiment. Also, there are various video data compression methods, but the present embodiment is not limited to the compression method, and the description thereof is omitted.

  Next, the broadcast program data acquisition unit 212 inquires of the operation reception unit 22 whether or not the wheel switch 312 has been operated within a predetermined time (step S407). For example, assuming that the predetermined time is 10 seconds, the tag list acquisition unit 214 displays a tag on the screen when the wheel switch 312 has been operated within the past 10 seconds, and the wheel switch within the past 10 seconds. If the operation 312 is not performed at all, the tag information is not displayed on the screen.

  When the broadcast program data acquisition unit 212 receives a response to the effect that the wheel switch 312 is not operated from the operation reception unit 22 (step S407: NO), the broadcast time update unit 213 stores the next frame time in the memory tst. Is set (step S410). Specifically, the playback processing unit 21 reads the end time (see FIG. 9) from the beginning of the data written in the memory area specified by the argument buf in step S405, and uses the read end time as the next frame time. Set to memory tst.

  The above is the operation of one loop when the viewer does not particularly operate the operation interface 3. In the present embodiment, for the sake of simplicity, only the playback of a video has been described as the past broadcast program playback process, but in reality, audio, caption data, program information, and the like are also required. The data is changed from the video file in step S405 by changing the file name “video.h264” part of the argument file to “audio.aac”, “caption.txt”, “program.txt”, and the like. By the same processing as when it was acquired, the data of each required file can be acquired in synchronization with the broadcast time.

<Operation when the viewer rotates the wheel switch 312>
The operation when the viewer rotates the wheel switch 312 of the operation interface 3 is as follows.
The operation receiving unit 22 that has received the inquiry in step S407 receives the operation information indicating that the operation of the wheel switch 312 has been performed from the operation interface 3 within a certain fixed time. The broadcast program data acquisition unit 212 is notified. When the broadcast program data acquisition unit 212 receives a response indicating that the wheel switch 312 has been operated (step S407: YES), the tag list acquisition unit 214 acquires a list of tag names related to the video being displayed. Then, the broadcast program management apparatus 1 is accessed, and the read interface unit 16 is caused to execute the pred function, thereby obtaining a list of tag names (step S408).

  For example, when the current channel indicated by the memory ch is “@ ch1”, the tag list acquisition unit 214 accesses the broadcast program management apparatus 1 and sends read (“/ @ ch1 /% taglist”, buf, size, tst) can be executed to obtain a list of tag names in the memory area specified by the argument buf. Thus, the argument file is set based on the channel read from the memory ch and the file name representing the tag list. The content of the memory tst is set in the argument tst, and the start address of the memory area in the storage unit 211 that is the write destination of the read data is set in the argument buf. The argument size is set according to the size of the data write destination memory area.

  The tag list acquisition unit 214 displays the acquired tag name list by overwriting the video currently displayed on the display unit 23 as shown in FIG. 16 (step S409). In the example of FIG. 16, in the memory area indicated by the argument buf, a tag name list of “# Kayo Show, # A-san, # B-san, # C-san, # Let's be a dream, # Kayo Taro, # Hanako Aozora” Is written. Note that if a list of tag names has already been displayed in the previous loop processing, the tag list acquisition unit 214 shifts and displays the cursor position by one according to the rotation direction of the wheel switch 312.

<Operation when the viewer selects a tag by pressing the wheel switch 312>
Next, an operation when the viewer selects the tag name by pressing the wheel switch 312 will be described.
If the operation reception unit 22 has received operation information indicating that the wheel switch 312 has been pressed, the operation reception unit 22 notifies the broadcast program data acquisition unit 212 that the wheel switch 312 has been pressed in step S402. When the broadcast program data acquisition unit 212 receives a notification that the wheel switch 312 has been pressed (step S404: YES), the time list acquisition unit 215 lists the tag names displayed on the display unit 23 at that time. The tag name where the cursor is located is set as the tag name selected by the viewer. Based on the tag name selected by the viewer, the time list acquisition unit 215 sets the next jump destination (display destination) channel and broadcast time in each of the memory ch and the memory tst (step S411).
In the broadcast program browsing system 5 according to the present embodiment, various methods are conceivable for setting the next jump destination in step S411. Below, four methods of AD are demonstrated as an example of those methods.

<Jump destination setting method A>
Method A is a method of jumping to the nearest past or future broadcast time related to the selected tag among the broadcast channels being browsed.

FIG. 19 is a flowchart showing the detailed operation of the jump destination broadcast time acquisition process in step S411 when a jump is performed by the method A.
First, the time list acquisition unit 215 acquires the tag name selected by the viewer (step S501). Next, the time list acquisition unit 215 accesses the read interface unit 16 of the broadcast program management device 1 to acquire a jump destination time, and acquires a list of time ranges corresponding to the selected tag (step S502). ). As already described, when the current channel indicated by the memory ch is “@ ch1” and the selected tag name is “Mr. C”, the time list acquisition unit 215 accesses the read interface unit 16 and reads “( / @ Ch1 / # C ”, buf, size, tst). The content of the memory tst is set in the argument tst. As a result, among the time range associated with the tag name “Mr. C” in the channel “@ ch1”, the past and future time ranges that are temporally adjacent to the time range including the broadcast time indicated by the memory tst are: It is written in the memory area specified by the argument buf. Thus, the jump destinations before and after the tag name “C” can be acquired.

Next, the time list acquisition unit 215 acquires the state of the selection switch 313 of the operation interface 3 from the operation reception unit 22, and determines whether it is set in the past direction (step S503). If it is determined that the selection switch 313 is set in the past direction (step S503: YES), the time list acquisition unit 215 reads the start time of the past time range from the memory area specified by the argument buf, and stores the memory tst. (Step S504). For example, when the past time range acquired by the “read” function is “t1-t3” and the future time range is “t6-t8”, the time list acquisition unit 215 sets and updates the time t1 in the memory tst. To do. On the other hand, when it is determined that the selection switch 313 is set in the future direction (step S503: NO), the time list acquisition unit 215 reads the start time of the future time range from the memory area specified by the argument buf, The memory tst is set (step S505). That is, in the case of the above example, the time t6 is set in the memory tst and updated.
After the process of step S504 or step S505, the reproduction processing unit 21 executes the process from step S402 of FIG.
With the above operation, it is possible to jump from the channel in which the viewer is viewing the broadcast program to the broadcast program at the latest past or future broadcast time of the same tag name.

<Jump destination setting method B>
Method B is a method of jumping to the nearest past or future broadcast time related to the selected tag in a program different from the program being browsed among the broadcast channels being browsed.

FIG. 20 is a flowchart showing the detailed operation of the jump destination broadcast time acquisition process in step S411 when a jump is performed by the method B.
First, the time list acquisition unit 215 acquires the tag name selected by the viewer (step S601). Next, the time list acquisition unit 215 acquires the program information of the broadcast time indicated by the memory tst, and acquires the start time and end time of the broadcast program currently being viewed (step S602). The program information can be acquired by the pred function in the same manner as the acquisition of video and audio frame data. That is, the program information file name is set to program. Assuming that txt, the time list acquisition unit 215 accesses the read interface unit 16 of the broadcast program management device 1 by calling pred (“/ @ ch1 / program.txt”, buf, size, tst), and sets the argument tst. The program information at the time including the time indicated by is acquired. That is, the argument file is set based on the channel read from the memory ch and the file name of the program information. Further, the contents of the memory tst are set in the argument tst. The program information read from the broadcast program management device 1 includes the broadcast start time and broadcast end time of the broadcast program.

  Next, the time list acquisition unit 215 performs the same processing as steps S502 to S505 in FIG. That is, the time list acquisition unit 215 accesses the read interface unit 16 of the broadcast program management device 1 to acquire the jump destination broadcast time, and acquires a list of time ranges corresponding to the selected tag using the pred function. (Step S603). The argument file is set based on the channel indicated by the memory ch and the selected tag name, and the contents of the memory tst are set in the argument tst. The time list acquisition unit 215 acquires the state of the selection switch 313 of the operation interface 3 from the operation reception unit 22. When the selection switch 313 is set in the past direction (step S604: YES), the time list acquisition unit 215 sets the start time of the past time range acquired in step S603 in the memory tst (step S605). If the selection switch 313 is set in the future direction (step S604: NO), the start time of the future time range acquired in step S603 is set in the memory tst (step S606).

Next, the time list acquisition unit 215 is currently browsing depending on whether the time newly set in the memory tst in step S605 or step S606 is included between the broadcast start time acquired in step S602 and the broadcast end time. It is determined whether or not the broadcast program is within the range of the program broadcast time (step S607). When the time list acquisition unit 215 determines that the newly set time in the memory tst is within the range of the program broadcast time of the currently viewed broadcast program (step S607: YES), the time list acquisition unit 215 returns to step S603 and jumps again. Get the time.
When the time list acquisition unit 215 determines that the newly set time in the memory tst is outside the range of the program broadcast time of the currently viewed broadcast program (step S607: NO), the playback processing unit 21 The process from step S402 in FIG. 18 is executed.
By the above operation, it is possible to jump to the latest broadcast program having the same tag name as the tag name selected by the viewer and different from the currently viewed broadcast program.

<Jump destination setting method C>
Method C is a method of jumping to the nearest past or future broadcast time related to the selected tag from all the channels recorded in the file storage unit 13 of the broadcast program management device 1.

FIG. 21 is a flowchart showing the detailed operation of the jump destination broadcast time acquisition process in step S411 when a jump is performed by the method C.
First, the time list acquisition unit 215 acquires the tag name selected by the viewer (step S701). Next, in order to acquire a jump destination time candidate, the read interface unit 16 of the broadcast program management device 1 is accessed, and a list of time ranges corresponding to the selected tag is acquired for all channels (step S702). . In other words, when all the broadcast channels are two channels “ch1” and “ch2”, the time list acquisition unit 215 reads pre (“/ @ ch1 / # C”, buf, size, tst) and pred (“/”). @ Ch2 / # C ”, buf, size, tst) accesses the read interface unit 16 twice. The content of the memory tst is set in the argument tst.

Next, the time list acquisition unit 215 acquires the state of the selection switch 313 of the operation interface 3 from the operation reception unit 22, and determines whether it is set in the past direction. When it is determined that the selection switch 313 is set in the past direction (step S703: YES), the time list acquisition unit 215 sets the memory tst from among the first times indicated by the past time ranges of all the acquired channels. The head time closest to the set time is selected and set in the memory tst, and the channel from which the head time is acquired is set in the memory ch (step S704). On the other hand, when it is determined that the selection switch 313 is set in the future direction (step S703: NO), the time list acquisition unit 215 selects the memory tst from the start times indicated by the acquired future time ranges of all the channels. Is set in the memory tst, and the channel from which the start time is acquired is set in the memory ch (step S705). After the processing in step S704 or step S705, the reproduction processing unit 21 executes the processing from step S402 in FIG.
By the above operation, the latest broadcast time broadcast corresponding to the same tag name is selected from the broadcast programs of all broadcast channels stored in the file storage unit 13 of the broadcast program management device 1 by the tag name selected by the viewer. You can jump to the program.

<Jump destination setting method D>
Method D is a method of jumping to the nearest past or future broadcast time related to the selected tag from the broadcast programs browsed so far by the viewer using the broadcast program playback device 2.

The viewing history recording unit 24 of the broadcast program reproducing device 2 records viewing history data. The viewing history data includes broadcast time and channel information of broadcast programs that have been reproduced by the broadcast program browsing system 5 so far. That is, a list of data in which the channel of the broadcast program reproduced by the time list acquisition unit 215, the reproduction start time, and the reproduction end time are associated is recorded in the viewing history data.
In general, since the broadcast program playback apparatus 2 is shared by a plurality of viewers, the viewing history data can be stored in association with the viewer's name. However, since the browser management method is not related to this embodiment, the description is omitted.

FIG. 22 is a flowchart showing the detailed operation of the jump destination broadcast time acquisition process in step S411 when a jump is performed by the method D.
The operation from step S801 to step S805 in the figure is exactly the same as the operation from step S501 to step S505 in FIG. Therefore, description is abbreviate | omitted here.

In Step S806 of Method D, the time list acquisition unit 215 selects the next jump destination candidate set in the memory tst based on the list of viewing history data stored in the viewing history recording unit 24 and the channel indicated by the memory ch. Is the broadcast time that has been played so far.
When the time list acquisition unit 215 determines that it is a broadcast time that has never been reproduced (step S806: NO), the time list acquisition unit 215 returns to step S802 and acquires the time of the next jump destination candidate.
When the time list acquisition unit 215 determines that the time of the jump destination candidate is a broadcast time that has been reproduced so far (step S806: NO), the reproduction processing unit 21 starts from step S402 in FIG. Execute the process.
By the above operation, it is possible to jump from the broadcast programs that have been browsed so far to the latest broadcast time with the same tag name.

<Other variations>
As mentioned above, although the example of method AD was demonstrated, this embodiment is not limited to this. For example, method D jumps to a part corresponding to the same tag information from broadcast programs browsed in the past, but conversely, the jump destination may be limited to the broadcast time of a broadcast program that has not been seen so far. it can. In that case, in the process of FIG. 22, when the time list acquisition unit 215 determines YES in step S806, the process from step S802 is performed, and when it is determined NO, the process from step S402 in FIG. 18 is performed.
In the description of the method D, the jump destination is described in the same channel as the channel of the broadcast program being browsed. However, as in the method C, the target of the jump destination may be all channels.
In Method C, the target of the jump destination is all channels, but the viewer can set the target channel and limit the channel to the set channel.
Further, although another broadcast program different from the one currently being browsed by the method B is set as a jump destination candidate, the broadcast time of the specific program is acquired using the program information, and only in the specific time zone (for example, in the series program) It is also possible to limit the search to
In the present embodiment, the viewing history of the viewer is stored in the viewing history recording unit 24 in the broadcast program playback device 2. However, the present invention is not limited to this, and viewing is performed in the broadcast program management device 1. History may be managed.
In the above embodiment, the time list acquisition unit 215 sets the start time indicated by the time range received from the broadcast program management device 1 in the memory tst, but sets any time in the time range in the memory tst. May be.

[Summary of Broadcast Program Browsing System 5 According to this Embodiment]
As described above, by using the broadcast program browsing system 5, it is possible to provide related past broadcast programs by using tag names arranged in time series as hyperlinks. As a result, the viewer can browse past broadcast programs related to the tag of interest while zapping.

[Effect of this embodiment]
As described above, by using the broadcast program management apparatus 1 according to the present embodiment, reading of files such as video and audio and tag information associated with the temporal range of video and audio are called file reading. It can be obtained using a common interface. That is, an external device using the broadcast program management device 1 does not require a dedicated interface for accessing a database related to tag information, and an operating system used in a personal computer or the like is standard. It is possible to read information about the tag using a read interface (for example, a pread system call) provided to the user. Thereby, an application using information about the read tag can be easily created.

  In addition, the broadcast program management apparatus 1 according to the present embodiment uses the time information to synchronize with frame data necessary for browsing programs such as video and audio, etc. It is possible to acquire information about the tag such as the broadcast time of the broadcast program corresponding to the tag name.

  Furthermore, the broadcast program playback apparatus 2 according to the present embodiment allows the viewer to select a tag name that the viewer is interested in while viewing the program, and uses the tag name arranged in time series as a hyperlink to select the selected tag. It becomes possible to jump to and display a broadcast program that is associated with the same tag name as the name in time. Thereby, the viewer can browse a large amount of past broadcast programs while zapping. That is, the viewer can browse the broadcast programs associated with the same tag name as the tag name selected as the target of interest while moving one after another.

[Others]
The broadcast program management device 1 and the broadcast program playback device 2 described above have a computer system inside. The operation process of the tag DB update unit 14, the time DB update unit 15 and the read interface unit 16 of the broadcast program management device 1, and the playback processing unit 21 and the viewing history recording unit 24 of the broadcast program playback device 2 are as follows. The program is stored in a computer-readable recording medium in the form of a program, and the above processing is performed by the computer system reading and executing the program. The computer system here includes a CPU, various memories, an OS, and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a storage unit such as a hard disk built in the computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory in a computer system serving as a server or a client in that case, and a program that holds a program for a certain period of time are also included. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

DESCRIPTION OF SYMBOLS 1 Broadcast program management apparatus 2 Broadcast program reproduction | regeneration apparatus 3 Operation interface 5 Broadcast program browsing system 11 Tag database memory | storage part (tag DB memory | storage part)
12 Time database storage unit (Time DB storage unit)
13 File storage unit (program data storage unit)
14 Tag database update unit (tag DB update unit)
15 Time database update unit (Time DB update unit)
16 Reading interface unit 21 Playback processing unit 22 Operation receiving unit 23 Display unit 24 Viewing history recording unit 31 Operation input unit 32 Operation notification unit 211 Storage unit 212 Broadcast program data acquisition unit 213 Broadcast time update unit 214 Tag list acquisition unit 215 Time list Acquisition unit 311 Operation button 312 Wheel switch 313 selection switch

Claims (8)

A program data storage unit for storing broadcast program data;
A time database storage unit for storing a list of tag names corresponding to the time range of the broadcast time;
A tag database storage unit for storing a list of time ranges of broadcast times corresponding to tag names;
When the search target and broadcast time information are received, and the search target is broadcast program data, the broadcast program data at the received broadcast time is read from the program data storage unit and output, and the search When the target indicates a tag list, the tag name list stored in the time database storage unit corresponding to the time range including the received broadcast time is read and output, and the search target is When indicating a tag name, a time that is temporally adjacent to a time range that includes the received broadcast time in the list of time ranges stored in the tag database storage unit corresponding to the tag name A read interface unit that reads and outputs a range; and
A broadcast program management apparatus comprising: The program data storage unit stores the data of the broadcast program for each channel,
The time database storage unit stores a list of tag names corresponding to the time range of the broadcast time for each channel,
The tag database storage unit stores a list of broadcast time ranges corresponding to tag names for each channel,
The read interface unit receives channel, search target, and broadcast time information, and when the search target is broadcast program data, the broadcast program data at the broadcast time of the channel is the program data. The tag name stored in the time database storage unit corresponding to the channel and the time range including the broadcast time when the search target indicates a tag list when read and output from the storage unit When the search target indicates a tag name, the list of time ranges stored in the tag database storage unit corresponding to the channel and the tag name is received. Read and output a time range that is temporally adjacent to the time range that includes the broadcast time,
The broadcast program management apparatus according to claim 1. Tag information indicating a tag name and a time range and an instruction for addition or deletion are received. When the instruction is addition, the tag database storage unit associates the tag name indicated by the tag information with the tag name. When the time range indicated by the tag information is registered and the instruction is deletion, the time range is stored in the tag database storage unit in association with the tag name indicated by the tag information. A tag database update unit for deleting the time range indicated by the tag information;
When the instruction is addition, the tag name indicated by the tag information is registered in the time database storage unit in association with the time range indicated by the tag information, and when the instruction is deletion, A time database update unit that deletes the tag name indicated by the tag information from the list of tag names stored in the time database storage unit in association with the time range indicated by the tag information;
The broadcast program management device according to claim 1, further comprising: A storage unit for storing broadcast time information;
A display unit for displaying images;
Broadcast program returned to the broadcast program management device by outputting to the broadcast program management device information to be searched indicating broadcast program data and the broadcast time information read from the storage unit at predetermined time intervals. Broadcast program data acquisition unit for displaying the data on the display unit,
When the display of the broadcast program data acquired by the broadcast program data acquisition unit is completed, the broadcast time information stored in the storage unit is updated to the broadcast time when the display of the broadcast program data is completed. Broadcast time update unit,
The search target information indicating the tag list and the broadcast time information read from the storage unit are output to the broadcast program management device, and a list of tag names at the broadcast time returned from the broadcast program management device is displayed. A tag list acquisition unit to be displayed on the display unit;
The search target information indicating the tag name selected by the viewer from the tag name list displayed on the display unit by the tag list acquisition unit, and the broadcast time information read from the storage unit, Output to the broadcast program management device, and receive from the broadcast program management device a time range that is temporally adjacent to the time range including the broadcast time among the time ranges of the broadcast time corresponding to the tag name, A time list acquisition unit that updates the information of the broadcast time stored in the storage unit with the broadcast time of the display destination obtained from the time range;
A broadcast program reproducing apparatus comprising: While the time list acquisition unit includes the broadcast time of the display destination obtained from the received time range within the range of the program broadcast time of the broadcast program displaying data on the display unit, the viewer The search target information indicating the tag name selected by and the broadcast time information of the display movement destination are output to the broadcast program management device, and the display movement is performed in the time range of the broadcast time corresponding to the tag name. Repeatedly receiving from the broadcast program management device a time range that is temporally adjacent to a time range that includes the previous broadcast time,
The broadcast program reproducing apparatus according to claim 4, wherein: The broadcast program data acquisition unit further includes a viewing history recording unit that records a broadcast start time and a playback end broadcast time of the broadcast program whose data is displayed on the display unit,
While the time list acquisition unit includes the broadcast time of the display movement destination obtained from the received time range from the playback start broadcast time recorded by the viewing history recording unit to the playback end broadcast time, Alternatively, while not included, the search target information indicating the tag name selected by the viewer and the broadcast time information of the display movement destination are output to the broadcast program management device, and the tag name corresponds to Repeatedly receiving from the broadcast program management device a time range that is temporally adjacent to a time range that includes the broadcast time of the display destination among the broadcast time range,
The broadcast program reproducing apparatus according to claim 4, wherein: The storage unit further stores information on a channel to be browsed,
The broadcast program data acquisition unit is a broadcast program management device that stores search target information indicating broadcast program data, information on the browse target channel read from the storage unit, and information on the broadcast time at predetermined time intervals. Output the broadcast program data at the broadcast time of the channel to be viewed from the broadcast program management device to display on the display unit,
The tag list acquisition unit outputs information on a search target indicating a tag list, information on the channel to be browsed read from the storage unit, and information on the broadcast time to the broadcast program management device, and the browsing target Receiving a list of tag names at the broadcast time of the channel from the broadcast program management device and displaying the list on the display unit,
The time list acquisition unit stores information on a search target indicating a tag name selected by the viewer, information on a channel to be searched, and information on the broadcast time read from the storage unit in the broadcast program management device. Output from the broadcast program management device a time range that is temporally adjacent to the time range including the broadcast time among the time ranges of the broadcast time corresponding to the channel to be searched and the tag name, The information on the broadcast time stored in the storage unit is updated with the broadcast time of the display destination obtained from the time range, and the information on the channel to be searched corresponding to the received time range, Updating information of the browsing target channel stored in the storage unit;
The broadcast program reproducing apparatus according to claim 4, wherein: A computer used in a broadcast program playback device having a display unit for displaying video,
A storage unit for storing broadcast time information;
Broadcast program returned to the broadcast program management device by outputting to the broadcast program management device information to be searched indicating broadcast program data and the broadcast time information read from the storage unit at predetermined time intervals. Broadcast program data acquisition unit for displaying the data on the display unit,
When the display of the broadcast program data acquired by the broadcast program data acquisition unit is completed, the broadcast time information stored in the storage unit is updated to the broadcast time when the display of the broadcast program data is completed. Broadcast time update section,
The search target information indicating the tag list and the broadcast time information read from the storage unit are output to the broadcast program management device, and a list of tag names at the broadcast time returned from the broadcast program management device is displayed. A tag list acquisition unit to be displayed on the display unit;
The search target information indicating the tag name selected by the viewer from the tag name list displayed on the display unit by the tag list acquisition unit, and the broadcast time information read from the storage unit, Output to the broadcast program management device, and receive from the broadcast program management device a time range that is temporally adjacent to the time range including the broadcast time among the time ranges of the broadcast time corresponding to the tag name, A time list acquisition unit for updating the information of the broadcast time stored in the storage unit by the broadcast time of the display destination obtained from the time range;
Program to function as.

Images