JP5600077B2 - Content data playback device - Google Patents

Description

  The present invention relates to a content data reproducing apparatus that reads out and reproduces content data such as music data and video data recorded on a recording medium such as a USB memory.

  Conventionally, when a recording medium such as a USB memory is connected, the file system of the recording medium is analyzed, and music information (attribute information) included in the music data in the file and folder information and the music data in the file is collected. There is known a content data reproducing apparatus that creates a music list (see, for example, Patent Document 1). In this way, by registering the folder information and attribute information of each file in a database corresponding to the recording medium, the user can search for music data and video data recorded on the connected recording medium. Become.

JP 2008-159170 A (page 6-9, FIG. 1-8)

  By the way, in the content data reproducing apparatus disclosed in Patent Document 1 described above, when various recording media are connected, the contents are analyzed, and a registration process is performed in which folder information and attribute information of each file are stored in a database. However, as the capacity of the recording medium increases, the number of music data and video data to be recorded often increases, and it takes time to perform registration processing at the time of connection. Particularly recently, a content data playback device (for example, an in-vehicle audio device) to which a plurality of recording media including a disk medium such as a USB memory, an SD card, or a DVD can be connected is known, and a plurality of recording media connected simultaneously. For example, when registration processing is performed in the order of connection, it takes a long time until the registration processing is completed, and it takes time to reproduce the content data. For example, when an SD card is connected after a USB memory is connected, even if an attempt is made to search for music data for the SD card connected later, after registration for the USB memory connected first is completed (for example, (When 1000 pieces of music data are recorded, it takes about 320 seconds to register.) It waits until the registration of the SD card is completed.

  The present invention was created in view of the above points, and its purpose is content that can shorten the time taken to reproduce content data even when a plurality of recording media are connected. The object is to provide a data reproducing apparatus.

  In order to solve the above-described problems, a content data playback apparatus according to the present invention is a content data playback apparatus that can connect a plurality of recording media and read and play back the content data recorded on the connected recording media. The recording medium detecting means for detecting the connection of the recording medium, the recording medium analyzing / registering means for analyzing the connected recording medium and registering the analysis result, and the user can operate the recording medium detecting means. Recording medium selection means for selecting a recording medium to be operated from a plurality of recording media whose connection is detected by the means, and recording medium analysis / registration means for the recording medium selected by the recording medium selection means Analysis order instruction means for instructing analysis and registration by the It reads Ceiling data and a content playback means for performing playback.

  When the user selects one of the recording media, analysis and registration is performed for the selected recording media, so it takes time to analyze the recording media that are early in the connection order but are not subject to playback. It is possible to reduce the time required to reproduce the content data desired by the user.

The recording medium analysis by the recording medium analysis / registration means described above is performed in the order of the recording media detected by the recording medium detection means, and the analysis order instruction means instructs to analyze and register any of the recording media. In this case, the recording medium is prioritized for analysis . In addition, it is desirable to continue the analysis and registration of the recording media performed in the order of detection by the recording medium detection unit after the preferential analysis and registration for the recording media instructed by the analysis order instruction unit is completed. As a result, each recording medium is basically analyzed in the order of connection, and this recording medium is preferentially analyzed when the user specifies the recording medium to be analyzed first. The analysis order of the recording media can be changed, and the operability can be improved reflecting the user's will.

  Further, the display means for displaying the analysis result of any recording medium analyzed and registered by the recording medium analysis / registration means described above, and recorded on the corresponding recording medium based on the analysis result displayed on the display means. It is preferable that the content retrieval unit further includes a content retrieval unit that retrieves and reads the content data, and the content reproduction unit reads and reproduces the content data retrieved by the content retrieval unit. Thus, by analyzing the recording medium selected by the user first, it becomes possible to search the content data based on the display of the analysis result and display the searched content data until it is reproduced. Time can be shortened.

  Further, it is desirable that the recording medium analysis / registration means described above analyzes the folder structure, file structure, and file attributes of the content data recorded on the recording medium. Further, when the content data described above is music data, it is desirable that the attribute information includes part or all of the artist name, album name, title, and genre name related to the music data. By performing such an analysis, it is possible to specify the content of the content data, and it becomes easy to search for the content data to be reproduced.

It is a figure which shows the structure of the audio apparatus of one Embodiment. It is a flowchart which shows a series of operation | movement procedures which detect and analyze the connection of a recording medium. It is explanatory drawing which shows the mode of the change of the recording medium of analysis object accompanying source switching.

  Hereinafter, an audio apparatus according to an embodiment to which a music data reproducing apparatus of the present invention is applied will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of an audio apparatus according to an embodiment. This audio device is mounted on a vehicle, for example.

  1, an audio device 1 includes a control unit 10, a USB (Universal Serial Bus) interface unit (USB I / F) 20, an SD (Secure Digital) interface unit (SD I / F) 26, a content list storage unit 30, An audio processing unit 40, an amplifier 42, a video processing unit 50, and an operation unit 60 are provided.

  The control unit 10 controls the entire audio apparatus 1. Details of the control unit 10 will be described later. The USB interface unit 20 is for inputting and outputting signals to and from the USB memories 22 and 24 as external recording media, and includes two or more USB ports and a USB host controller. . Content data such as music data and video data is recorded in the USB memories 22 and 24.

  The SD interface unit 26 is for inputting and outputting signals to and from an SD memory card 28 as an external recording medium, and includes one SD card slot and an SD host controller. Content data such as music data and video data is recorded on the SD memory card 28.

  The content list storage unit 30 stores a content list corresponding to each recording medium such as the USB memory 22. This content list includes the folder structure, file structure, and file attributes of content data. When the content data is music data, the file attribute includes all or part of the artist name, album name, title, and genre name related to the music data. When the content data is video data, the file attributes include all or part of performer names, album names, titles, and genre names related to the video data.

  The audio processing unit 40 is for reproducing music data read from the USB memories 22 and 24 or the SD memory card 28 by the control unit 10, and performs audio decoding processing for each data format and outputs an audio signal. . This audio signal is amplified by the amplifier 42 and output from the speaker 44. In practice, audio signals having two or more channels are reproduced and output, but in the configuration shown in FIG. 1, one amplifier 42 and one speaker 44 are shown in a simplified manner. .

  The video processing unit 50 is for reproducing video data read from the USB memory 22, 24 or the SD memory card 28 by the control unit 10, and performs video decoding processing for each data format and outputs a video signal. . This video signal is input to the display device 52 and video display is performed. The video to be displayed includes both moving images and still images.

  The operation unit 60 is for accepting various operations by the user, and includes various switches and operation knobs. Note that the operation unit 60 may be configured by using a touch panel arranged on the screen of the display device 52, or the operation unit may be configured by using a remote control unit or the like.

  Next, the control unit 10 will be described. As shown in FIG. 1, the control unit 10 includes a recording medium detection unit 12, a recording medium analysis / registration unit 14, an analysis order instruction unit 16, and a content search unit 18.

  The recording medium detection unit 12 detects whether or not a recording medium is connected. In this embodiment, the presence / absence of connection of the USB memories 22 and 24 to the USB port of the USB interface unit 20 and the presence / absence of the connection of the SD memory card 28 to the SD card slot of the SD interface unit 26 are detected. Each of the USB memories 22 and 24 and the SD memory card 28 may be inserted in an operating state after startup in addition to being inserted into the USB port or SD card slot before the audio device 1 is started up. It is done.

  The recording medium analysis / registration unit 14 analyzes the content data recorded on the recording medium (USB memory 22, 24, SD memory card 28) where the connection is detected, and registers the analysis result. This analysis is performed in order to create a content list to be stored in the content list storage unit 30, and the folder structure, file structure, and file attribute of the content data are analyzed for each recording medium in which connection is detected and analyzed. The resulting content list is stored (registered) in the content list storage unit 30.

  The analysis order instruction unit 16 instructs the analysis order when a plurality of recording media are in a state where analysis is possible. Basically, the analysis is performed in the order in which the connection is detected by the recording medium detection unit 12. For example, consider the case where the USB memory 22 or the like is inserted after the audio device 1 is activated, and the connection is detected in the order of (1) the SD memory card 28, (2) the USB memory 22, and (3) the USB memory 24. (1) Analysis / registration of the SD memory card 28, (2) Analysis / registration of the USB memory 22, and (3) Analysis / registration of the USB memory 24. The time required for analysis varies depending on the amount of recorded content data. For example, when music data for 1000 songs is stored in the USB memories 22 and 24 and the SD memory card 28, it is confirmed that the analysis requires about 320 seconds.

  By the way, when reproducing the content data, the user uses the operation unit 60 to select a recording medium that is an operation target (content data reproduction target), and any of the recording media recorded on the selected recording medium. It is necessary to specify the content data. When the content data specified in this way is music data, audio playback is performed using the audio processing unit 40, and when the content data is video data, video playback is performed using the video processing unit 50.

  As described above, the analysis order of the recording media is basically the order in which the connection is detected, but the analysis order instructing unit 16 selects the recording medium to be operated by the user (source switching). The analysis order is changed so that the selected recording medium is analyzed first. In this case, the analysis is interrupted for the recording medium being analyzed.

  Based on the content list stored in the content list storage unit 30, the content search unit 18 searches and reads content data recorded on a recording medium corresponding to the content list. For example, when a user selects a recording medium to be operated (content data playback target) using the operation unit 60, a content list corresponding to the recording medium is read from the content list storage unit 30, and the contents are The image is displayed on the display device 52 by the video processing unit 50. The user can designate the content data to be reproduced by operating the operation unit 60 while referring to the contents of the displayed content list. The content search unit 18 searches content data using such a content list and specifies content data to be reproduced.

  The recording medium detection unit 12 described above is a recording medium detection unit, the recording medium analysis / registration unit 14 is a recording medium analysis / registration unit, the operation unit 60 is a recording medium selection unit, and the analysis order instruction unit 16 is an analysis order instruction unit. In addition, the audio processing unit 40 and the video processing unit 50 correspond to the content reproduction unit, the display device 52 corresponds to the display unit, and the content search unit 18 corresponds to the content search unit.

  The audio apparatus 1 has such a configuration. Next, an operation for analyzing each recording medium and registering a content list will be described. FIG. 2 is a flowchart showing a series of operation procedures for detecting and analyzing the connection of the recording medium.

  When the audio device 1 is activated, the recording medium detection unit 12 determines whether or not connection of any recording medium is detected (step 100). If no recording medium is connected at this time, a negative determination is made, and this determination is repeated. When any recording medium (for example, the SD memory card 28) is connected, an affirmative determination is made in the determination of step 100.

  Next, the recording medium analysis / registration unit 14 analyzes the detected recording medium (SD memory card 28) (step 102) and determines whether or not the analysis is completed (step 104). A negative determination is made until the analysis is completed, and then the analysis order instruction unit 16 determines whether or not source switching (selection of a recording medium to be operated by the user) has been performed (step 106). If source switching is not performed, a negative determination is made, and the process returns to step 102 to continue the analysis operation.

  When the analysis operation is completed, an affirmative determination is made in the determination of step 104. Next, the recording medium analysis / registration unit 14 registers a content list that is an analysis result of the SD memory card 28 (step 108). The registered content list is stored in the content list storage unit 30. When this registration process ends, the process returns to step 100 and the operations after the recording medium detection determination are repeated. Note that the determination operation in step 100 is performed in parallel during the analysis operation in step 102, and when connection of another recording medium is detected during the analysis operation in step 102, the recording being performed in this analysis is performed. After the registration operation in step 108 for the medium is completed, the analysis operation in step 102 for the next recording medium (in the case of a plurality of connections) is started.

  If source switching is performed during the analysis operation, an affirmative determination is made in the determination of step 106. Next, the analysis order instruction unit 16 determines whether or not the recording medium as the switched source has been analyzed and the content list has been registered (step 110). If registered, a negative determination is made, and the process returns to step 102 to continue the analysis operation of the SD memory card 28.

  If the recording medium after switching the source is not registered, a negative determination is made in the determination in step 110. For example, when the USB memory 22 is connected during analysis of the SD memory card 28 and the analysis-waiting USB memory 22 is selected as a recording medium to be operated in the analysis-waiting state, a negative determination is made in the determination of step 100. Is done.

  Next, the recording medium analysis / registration unit 14 interrupts the analysis of the SD memory card 26 performed at that time (step 112), and analyzes the recording medium (for example, the USB memory 22) selected after the source switching. It is performed (step 114), and it is determined whether this analysis is completed (step 116). A negative determination is made until the analysis is completed, and the process returns to step 114 to continue the analysis operation of the selected recording medium (for example, the USB memory 22) after switching the source.

  When the analysis operation is completed, an affirmative determination is made in the determination of step 116. Next, the recording medium analysis / registration unit 14 registers a content list as an analysis result of the USB memory 22 (step 118). The registered content list is stored in the content list storage unit 30. When this registration process is completed, the recording medium analysis / registration unit 14 resumes the analysis operation of the SD memory card 28 performed before the source switching from the interruption position (step 120). Thereafter, the process returns to step 102 and the analysis operation of the SD memory card 28 is continued.

  FIG. 3 is an explanatory diagram showing a state of changing a recording medium to be analyzed accompanying source switching. As shown in FIG. 3, when the SD memory card 28 is connected at the point A, this connection is detected and the analysis of the SD memory card 28 is started. This analysis requires processing time up to the time indicated by a. However, when the USB memory 22 is newly connected at time B before this a, and the source is switched to the USB memory 22 by the user at time C, the SD memory card 28 being analyzed at that time. The analysis of the USB memory 22 selected by the source switching is newly started. Then, when this analysis ends at time D, the analysis of the SD memory card 28 that has been interrupted is resumed.

  As described above, in the audio apparatus 1 according to this embodiment, when the user performs source switching and selects any recording medium, the selected recording medium is analyzed and registered. It is possible to prevent time-consuming analysis of a recording medium (SD memory card 28 in the example shown in FIG. 3) that is early in connection order but is not a target for reproduction, and a recording medium desired by the user (in the example shown in FIG. 3). It is possible to reduce the time taken to reproduce the content data recorded in the USB memory 22).

  In addition, each recording medium is basically analyzed in the order of connection, and when the user specifies the recording medium to be analyzed first, this recording medium is preferentially analyzed. The analysis order of the recording media can be changed, and the operability can be improved reflecting the user's will. In particular, by first analyzing the recording medium selected by the user, the analysis result (content list) is displayed on the display device 52, and content data based on the display can be retrieved at an early stage. The time until the content data is reproduced can be shortened.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, two USB memories 22 and 24 and one SD memory card 28 are assumed as recording media to be analyzed. However, these numbers may be changed as appropriate. The types of recording media are not limited to these, and other types of recording media may be added or replaced. For example, as long as it can be inserted and removed (replaceable), it may be a recording medium using a semiconductor memory that complies with other standards, or a disk-type medium (DVD or the like). A DVD or the like can also record a large number of hierarchized content data, and when a DVD or the like is detected after being loaded in a disc reader, a USB memory or the like is detected. The present invention can be applied in the same manner as described above.

  In the above-described embodiment, both music data and video data are considered as content data. However, the present invention can also be applied to the case where only one of them is recorded. Further, although the case where the content list includes the folder structure, the file structure, and the file attribute has been described, the content list may include other information in addition to some or all or part of the content list. . Further, the format of the content list does not necessarily have to be a list format, and may be any format as long as it can be used for searching content data later.

  As described above, according to the present invention, when the user performs source switching and selects one of the recording media, analysis and registration are performed for the selected recording medium. It is possible to prevent time-consuming analysis of recording media that are early in order but not subject to playback, and to shorten the time required to reproduce the content data recorded on the recording media desired by the user.

DESCRIPTION OF SYMBOLS 1 Audio apparatus 10 Control part 12 Recording media detection part 14 Recording media analysis / registration part 16 Analysis order instruction part 18 Content search part 20 USB interface part (USB I / F)
22, 24 USB memory 26 SD (Secure Digital) interface (SD I / F)
28 SD memory card 30 Content list storage unit 40 Audio processing unit 42 Amplifier 50 Video processing unit 60 Operation unit

Claims (5)

A plurality of recording media can be connected, and a content data playback device that reads and plays back content data recorded on the connected recording media,
Recording medium detecting means for detecting connection of the recording medium;
A recording medium analysis / registration means for analyzing the connected recording medium and registering an analysis result;
A recording medium selecting means that can be operated by a user and selects the recording medium to be operated from among the plurality of recording media whose connection is detected by the recording medium detecting means;
Analysis order instruction means for instructing analysis and registration by the recording medium analysis / registration means for the recording medium selected by the recording medium selection means;
Content reproducing means for reading out and reproducing the content data recorded on the recording medium;
The recording media analysis by the recording media analysis / registration means is performed in the order of the recording media detected by the recording media detection means, and any one of the recording media is analyzed by the analysis order instruction means And a content data reproducing apparatus that preferentially analyzes the recording medium when registration is instructed . In claim 1,
The analysis and registration of the recording media performed in the order of detection by the recording media detection means after the preferential analysis and registration for the recording media instructed by the analysis order instruction means is completed. Data playback device. In claim 1 or 2,
Display means for displaying an analysis result of any of the recording media analyzed and registered by the recording media analysis / registration means;
Based on the analysis result displayed on the display means, content search means for searching and reading the content data recorded on the corresponding recording medium;
The content data reproduction device further comprises: the content reproduction unit reads out and reproduces the content data searched by the content search unit. In any one of Claims 1-3,
The content data reproducing apparatus characterized in that the recording medium analysis / registration means analyzes a folder structure, a file structure, and a file attribute of content data recorded on the recording medium. In claim 4,
When the content data is music data, the attribute information includes part or all of an artist name, an album name, a title, and a genre name related to the music data.

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