JP3899021B2 - TV receiver - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a television receiver for receiving a television signal in which other or more detailed information related thereto is multiplexed as additional information together with a program or commercial, and particularly, additional information is collected and recorded as necessary. It is related with the television receiver which can do.
[0002]
[Prior art]
  In recent years, in television broadcasting, so-called multiplex broadcasting in which normal programs and commercials and other or more detailed information related thereto are broadcast as additional information by VBI multiplexing, FM multiplexing, etc. Has been put to practical use. According to such a system, there is an advantage that more information can be provided at the same broadcast time. However, from the user's perspective, in order to receive this information, the receiver must be set to the multiplex broadcast reception mode, and the additional information must always be received.To seeIn some cases, there is an excessive amount of information, and a method for organizing such flooding information is required.
[0003]
[Problems to be solved by the invention]
  However, since there has been no television receiver that can organize such additional information efficiently, the user sets the receiver to the multiplex broadcast reception mode and displays the additional information on the screen.to seeThe current situation is that only use is made. As a method of recording the received additional information, it is conceivable to record the information received in the multiplex broadcast reception mode as it is with a video recorder or the like. In this case, in order to record only the necessary additional information. , Additional information displayed on the screenYou seeHowever, there is a problem that it is necessary to repeat an extremely complicated operation of performing a recording operation such as a video recorder when necessary additional information appears.
[0004]
  The present invention has been made in view of the present situation,Along with normal programs and commercials, it was multiplexed as other or more detailed information related to it.Additional information can be requested by userUsing the icons corresponding to the products displayed on the screenSelect and organizeFurther display on the screen and record as requiredAn object of the present invention is to obtain a television receiver having a function capable of being performed.
[0008]
[Means for Solving the Problems]
  In order to achieve the above object, an invention according to claim 1 of the present application is a television receiver for receiving a digitally encoded television signal, which analyzes the digitally encoded television signal, and An image obtained by decoding a digitally encoded television signal.Of objects with detailed informationDigital television signal analyzing means for separating and outputting additional information indicating a position on the screen from the television signal and outputting the position, and a position specified by the additional information output by the digital television signal analyzing means on the monitor screen Means for displaying an icon on the screen, means for selecting the icon, and when the icon is selected, the digitally encoded television signal is decoded, and the detailed information transmitted corresponding to the position of the icon Is provided as image signal output means.
[0009]
  In addition, the claims of this application2The present invention relates to the above-mentioned claim.1The described television receiver includes detailed information recording means for recording the detailed information.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
As shown in FIG. 1, the television receiver according to Embodiment 1 of the present invention separates the additional information code from the NTSC video signal in the television receiver that receives the NTSC (National Television System Committee) video signal (10). The additional information detection means (M1) for extraction and output, the additional information recording means (M5) for recording the additional information code output by the additional information detection means, and the additional information detection means (M1) for output The additional information write switch means (M4) for passing / blocking the additional information code with respect to the additional information recording means (M5) according to a predetermined control signal (M3), and the additional information detection means (M1) output Conversion means (M2) for converting the additional information code to be read or the additional information code read from the additional information recording means (M5) into characters or images, and the NT This embodiment comprises signal combining means (M7) for combining the C video signal and additional information converted into characters or images by the conversion means (M2) and outputting it as a monitor output signal. With the above configuration, the television receiver 1 according to 1 selects and collects necessary information from a television signal in which another program or commercial related information or other detailed information is multiplexed as additional information. The additional information recorded and recorded can be used in various ways as a database.
[0011]
Here, as the control signal (M3), a recording request signal for directly requesting that the user records additional information from the outside can be used. Further, when a code (keyword) indicating additional information that the user desires to record is held and the additional information code output by the additional information detecting means (M1) has this keyword, the additional information write switch means (M4) is provided. It is also possible to provide a code comparison means for outputting a signal for setting the passing state and using the output of this code comparison means as the control signal (M3). By providing such a code comparison means, if keywords are set in advance, only the desired additional information is added after a certain period of time, without requiring the user to directly record additional information from the outside. It can be stored in the information recording means (M5).
[0012]
Embodiment 2. FIG.
As shown in FIG. 2, the television receiver according to the second embodiment of the present invention analyzes the digitally encoded video signal 20 in the TV receiver that receives the digitally encoded video signal 20, A digital television signal analyzing means (M8) for separating and extracting the included additional information from the video signal and outputting it as an additional information code when the video signal includes additional information; and the digital television signal The additional information recording means (M5) for recording the additional information code output from the analyzing means (M8) and the additional information code output from the digital television signal analyzing means (M8) are set to a predetermined control signal (M3). In response to the additional information recording means (M5), the additional information writing switch means (M4) for passing / blocking the additional information recording means (M5), and the digital A conversion means (M10) for converting the additional information code output from the revision signal analysis means (M8) or the additional information code read from the additional information recording means (M5) into characters and the like, and the digitally encoded video signal A video signal decoding means (M9) for decoding video and outputting a video signal; a video signal output from the video signal decoding means (M9); and additional information converted into characters and the like by the conversion means (M10); And a signal synthesis means (M7) for synthesizing and outputting as a monitor output signal. With such a configuration, the television receiver according to the second embodiment has a normal program and commercial as well as other related programs. Select or collect and record necessary information from a television signal in which more detailed information is multiplexed as additional information. Can, this collection can be variously employ the recorded additional information as a database.
[0013]
Here, as with the television receiver in the first embodiment, a recording request signal that directly requests the user to record additional information from the outside can be used as the control signal (M3). Further, a code (keyword) indicating additional information that the user desires to record is held, and when the additional information code output by the additional information detecting means has this keyword, the additional information writing switch means (M4) is set to the passing state. It is also possible to provide code comparing means for outputting a signal to be used, and to use the output of this code comparing means as the control signal (M3). By providing such a code comparison means, if keywords are set in advance, only the desired additional information is added after a certain period of time, without requiring the user to directly record additional information from the outside. It can be stored in the information recording means (M5).
[0014]
【Example】
Example 1.
Hereinafter, the television receiver according to the first embodiment of the present invention based on the first embodiment will be described with reference to FIG. In FIG. 3, 11 is an additional information display request signal input by the user when it is desired to display additional information, and 12 is a recording request signal from the user for recording the displayed additional information. Corresponds to the control signal M3 shown in FIG. Reference numeral 13 denotes a reproduction request signal from the user for reproducing the recorded additional information. Reference numeral 100 denotes a line 21 analysis means that receives the NTSC signal 10 and detects the 21st line in order to determine whether additional information is being transmitted. Reference numeral 101 denotes an AND circuit that receives the additional information display request signal 11 and a signal 18 indicating that additional information is being transmitted by the line 21 analyzing means 100, and additional information described later based on these signals. This is for on / off control of the detecting means 102. 102 corresponds to the additional information detecting means M1 shown in FIG. 1, and receives the video signal 14 that has passed through the analyzing means 100 and is turned on by the control signal 15 output from the AND circuit 101. The additional information detecting means 103 for separating and extracting additional information contained in the video signal 14 and outputting it, 103 corresponds to the converting means M2 in FIG. 1, and is a code for converting the additional information codes 16a and 16b into characters or images. / Character / image conversion means; 104, a frame memory for temporarily storing additional information converted into characters, etc .; 105, an NTSC video signal 10 and the additional information signal stored in the frame memory 104; Signal synthesizing means for obtaining the monitor output signal 17. The frame memory 104 and the signal combining unit 105 correspond to the signal combining unit M7 shown in FIG. 108 corresponds to the additional information recording means M5 shown in FIG. 1, and is a recording medium such as an HDD (hard disk driver) for recording and storing the additional information code output from the additional information detecting means 102. Reference numeral 106 denotes a switch that permits the additional information code 16a output from the additional information detecting means 102 to be recorded in the recording HDD 108 when the recording request signal 12 is input. The additional information writing shown in FIG. It corresponds to the switch means M4. Reference numeral 107 denotes a switch for reading the additional information recorded in the recording HDD 108 when the reproduction request signal 13 is input and outputting it to the code / character / image conversion means 103.
[0015]
Next, the operation of the television receiver according to the first embodiment will be described. As a received NTSC video signal 10, in order to notify that additional information is transmitted, for example, as shown in FIG. 4 (a), a vertical blanking interval (VBI = Vertical Blanking Interval) is used. Multiplexing is performed, a waveform is provided on the 21st line to notify that the next product code will be sent, and a character code (eg JIS code) is sent on the other line, for example the 22nd line (see FIG. 4 (b)). . Here, for example, if the pulse width T is T = 1 / (4 × fsc), the color subcarrier frequency fsc is 3.58 MHz in the NTSC system, so the pulse width T is 70 nsec. Therefore, although it is 910 dots in one line, there is a part already used in the horizontal sync pulse and color burst here, and the effective length that can be used for the signal is generally 768 dots except for this. If kanji is used, 16 bits (dots) are required for coding one character, so that 768/16 = 48 characters can be transmitted per line.
[0016]
Here, it is possible to transmit graphic information as a bitmap instead of characters, but the NTSC system has a limitation in transmission capacity. For example, if image data is sent in 24-bit order in the order of Red / Blue / Green with 8-bit resolution, data for 768 (dots) / 24 = 32 (dots) can be sent in one line, and 256 × 256. In order to transmit a bitmap having a size of 256 × 256/32 = 2048 (lines), if one line is used in one field, 2048 fields are required. Since it is generally 60 fields / second, transmission of such a bitmap takes 2048/60 = 34 seconds, and therefore there is a limit to the size of video data that can be practically transmitted.
[0017]
Subsequently, when both the additional information display request signal 11 and the signal 18 indicating that additional information is being transmitted are input to the AND circuit 101, the additional information detecting means 102 is turned on, and as described above, the video signal 14, the additional information code of 48 characters per line is separated and extracted from the video signal and output. When the recording request signal 12 is input, the additional information code 16a is turned on and recorded in the recording HDD 108, and is converted into characters by the code / character / image converting means 103, and is displayed on one screen. Minute character data and the like are stored in the frame memory 104. The signal synthesizing unit 105 synthesizes the NTSC video signal 10 and the character data for one screen stored in the frame memory 104 and outputs a monitor output signal 17.
[0018]
On the other hand, the additional information code stored in the recording HDD 108 by the above-described operation is turned on when the reproduction request signal 13 is input from the user, and the additional information data 16b is read from the recording HDD 108. Then, it is converted into character information by the code / character / image conversion means 103, and information for one screen is stored in the frame memory 104 and then output as the monitor output signal 17 via the signal synthesis means 105. At this time, when the NTSC video signal 10 is input, the character data is displayed by being combined with the currently received video signal, and when the NTSC video signal 10 is not received, the character information is displayed on the screen. Only is displayed.
[0019]
As a method of synthesizing the video signal and the character data by the signal synthesizing unit 105, for example, a method of dividing and displaying two screens can be cited.
[0020]
In the above description, the case where the additional information 16a encoded at the timing when the recording request signal 11 from the user is input is described. However, for example, in the case of a commercial, the product code desired by the user is changed. It may be reserved in advance, and the additional information may be recorded in the recording HDD 108 only when it matches the product code transmitted on the 21st line. By doing so, a database in which information desired by the user is automatically stored after a certain time is created.
[0021]
  As described above, according to the first embodiment, in the NTSC television receiver, the additional information transmitted together with the normal video is separated and extracted using the additional information detecting unit 102, and this is extracted according to the user's request. While recording on the recording HDD 108, the recorded additional information is extracted by the reproduction request signal 13 from the user and can be displayed, so that the additional information displayed in real time can be displayed.OrganizeAnd take it out whenever you need itCan seeThe additional information can be effectively used. Also, by reserving the type of additional information desired by the user in advance, only the desired additional information is selected, and the additional information is automaticallyOrganizeIn addition, when viewed from the user side, additional information can be collected without knowing after a certain time, and efficient information collection is possible.
[0022]
Example 2
Next, a television receiver according to a second embodiment of the present invention based on the second embodiment will be described with reference to FIG. The second embodiment is a television receiver in which a digitally encoded television signal is an MPEG2-Video stream. In FIG. 5, reference numeral 200 corresponds to the digital television signal analysis means M8 shown in FIG. 2, which receives an MPEG2-Video stream 20 and separates and extracts additional information codes such as characters from the stream 20 for output. It is an analysis tool. The stream analyzing means 200 is controlled to be turned on / off by receiving the additional information display request signal 11 from the user. 201 corresponds to the video signal decoding means M9 shown in FIG. 2, and is an MPEG2-Video decoder that receives the MPEG2-Video stream 20 and converts the encoded video information into a normal video signal 14. The other parts are the same as those given the same reference numerals in the first embodiment shown in FIG.
[0023]
Hereinafter, the operation of the television receiver of the second embodiment will be described. The received MPEG2-Video stream 20 stores video information, character information, etc. in a predetermined format. When the display request signal 11 is input from the user, the stream analysis means 200 is turned on, and the MPEG2 -Video Extract additional information such as characters included in the stream 20 and output it as a signal 16a. For the additional information, a user data (user data) area (8 bits) in the MPEG standard can be defined and used. That is, if the identifier for additional information is, for example, “0000 0100” and a product code is “0110 0110 1111 1111 0000 0000”, then the definition is as follows.
[0024]
0000 0000 0000 0000 0000 0000 1011 0010… User Data Start Code (0xB2)
0000 0100 ... Identifier indicating additional information
0110 0110 ... first 8 bits out of product code 24 bits
1111 1111 ... The next 8 bits of the product code 24 bits
0000 0000 ... last 8 bits of product code 24 bits
0011 1011 ... upper 8 bits of 16 bits representing one kanji
1100 1101 ... Lower 8 bits of 16 bits indicating one kanji
・ ・
・ ・
0000 0000 0000 0000 0000 0001 ... Code indicating the end of user data
[0025]
Therefore, the stream analysis means 200 receives the stream in the format as described above, so that the current stream is the additional information ('0000 0100') and relates to the product code ('0100 0110 1111 1111 0000 0000'). Can be identified. The character data can continue to be sent any number of times until a code indicating the end of the user data is sent.
[0026]
On the other hand, the MPEG2-Video decoder 201 converts the video information contained in the input MPEG2-Video stream 20 into a video signal 14 and outputs it to the signal synthesis means 105. The additional information code 16a output from the stream analyzing means 200 is converted from code to character by the code / character converting means 109, and stored in the frame memory as data for one screen. At this time, if the recording request signal 12 is input from the user, the switch 106 is turned on, and the additional information code 16 a output from the stream analysis means 200 is written into the recording HDD 108.
[0027]
The additional information stored in the frame memory 104 is combined with the video signal 14 output from the MPEG2-Video decoder 201 by the signal combining means 105 to become a monitor output signal 17.
[0028]
Further, the additional information stored in the recording HDD 108 is read out from the recording HDD 108 by turning on the switch 107 when the reproduction request signal 13 is input from the user, and is the same as in the first embodiment. Through the code / character converting means 103, the frame memory 109, and the signal synthesizing means 105, the monitor output signal 17 is displayed on the monitor after being divided into two screens, for example.
[0029]
In this embodiment, as in the first embodiment, for example, in the case of a commercial, the product code desired by the user is reserved in advance, and the MPEG2-Video stream transmitted by the stream analysis means 200 is reserved. The additional information may be recorded in the recording HDD 108 only when it matches the product code included. By doing so, a database in which information desired by the user is automatically stored after a certain time is created.
[0030]
  As described above, according to the second embodiment, in the digital television receiver using the MPEG2-Video system, the additional information transmitted together with the normal video is analyzed by the stream analyzing means 200, and only the additional information code 16a is obtained. The information is taken out and recorded in the recording HDD 108 in response to the user's request, while the recorded additional information is taken out and displayed by the reproduction request signal 13 from the user so that the additional information displayed in real time can be displayed.OrganizeAnd take it out whenever you need itCan seeThe additional information can be effectively used. Also, by reserving the type of additional information desired by the user in advance, only the desired additional information is selected, and the additional information is automaticallyOrganizeIn addition, when viewed from the user side, additional information can be collected without knowing after a certain time, and efficient information collection is possible.
[0031]
Example 3
Next, a television receiver according to a third embodiment of the present invention based on the second embodiment will be described with reference to FIG. In FIG. 6, reference numeral 110 denotes a code / image conversion means for converting additional information (image data displayed as a bitmap code) separated and extracted from the MPEG2-Video stream 20 by the stream analysis means 200 into a normal image signal; This is a removable recording medium such as a floppy disk capable of exchanging data with the recording HDD 108, and the other parts are the same as those given the same reference numerals in the second embodiment shown in FIG. is there.
[0032]
Hereinafter, the operation of the television receiver according to the third embodiment will be described. The basic operation of recording and reading the additional information code is the same as that of the television receiver of the second embodiment. However, in this case, the additional information is in bitmap format in order to handle image data instead of characters as additional information. In order to synthesize the video signal 14 by the signal synthesizing unit 105, the code / image converting unit 110 is configured to convert data from a code to an image. By using the MPEG2-Video format in this way, relatively large amounts of information such as graphic information can be handled as additional information in addition to text information, and the range of broadcast multiplexing can be expanded. be able to.
[0033]
In the removable recording medium 300, for example, additional information stored in the recording HDD 108 can usually be used by the user by reading it and displaying it on a monitor. Or the like, the desired additional information stored in the recording HDD is selected and taken out to the outside, and written to the removable recording medium 300. By writing the additional information recorded in 300 in its own recording HDD 108, the additional information created by a third party can be taken into its own database, which is useful for exchanging information. Note that such a removable recording medium 300 can be applied to the first and second embodiments, and has the same effect.
[0034]
Example 4
Next, a television receiver according to a fourth embodiment of the present invention will be described with reference to FIG. In the second embodiment and the third embodiment, the additional information itself is described in the User Data area in the MPEG standard of the MPEG2-Video stream 20 to be transmitted. However, in the fourth embodiment, details are added to the User Data area. The point that only the channel number or still picture number in which information is recorded is described as additional information is greatly different from the second and third embodiments. That is, in FIG. 7, reference numeral 400 denotes an additional information (channel number or still image number) signal 19 taken out by the stream analysis means 200 as an input, and the MPEG2-Video stream 20 channel or additional information specified by the additional information. An MPEG2-Video still image decoder that decodes specified still images. In the fourth embodiment, the MPEG2-Video still image decoder 400 decodes the MPEG2-Video stream 20 based on the additional information, outputs the decoded image signal as an image signal, and records the image signal in the recording HDD 108.
[0035]
  Hereinafter, the operation of the television receiver of the fourth embodiment will be described. The stream analysis means 200 detects the channel number (or still image number) in which the code identifying the additional information, the product code, and the detailed information included in the MPEG2-Video stream 20 is included, and the subsequent MPEG2-Video stream 20 Video Still image decoder detected aboveSpecified by additional information, MPEG2-Vide Still image specified by stream 20 channel or additional informationDecode. For the additional information, a user data (user data) area (8 bits) in the MPEG standard can be defined and used. That is, if the identifier for additional information is, for example, “0000 0100” and a product code is “0110 0110 1111 1111 0000 0000”, then the definition is as follows.
[0036]
0000 0000 0000 0000 0000 0000 1011 0010… User Data Start Code (0xB2)
0000 0100 ... Identifier indicating additional information
0110 0110 ... first 8 bits out of product code 24 bits
1111 1111 ... The next 8 bits of the product code 24 bits
0000 0000 ... last 8 bits of product code 24 bits
0011 1011… Channel number (or still image number) on which detailed information is recorded
1100 1101… Channel number (or still picture number) on which detailed information is recorded
・ ・
・ ・
0000 0000 0000 0000 0000 0001 ... Code indicating the end of user data
[0037]
Therefore, the stream analysis means 200 receives the stream in the format as described above, so that the current stream is the additional information ('0000 0100') and relates to the product code ('0100 0110 1111 1111 0000 0000'). The MPEG2-Video stream is decoded by the MPEG2-Video still picture decoder 400 based on the subsequent channel number or still picture number information, thereby obtaining an image signal as detailed information. The obtained image signal is stored in the frame memory 104. At this time, if the recording request signal 12 from the user is input, the switch 106 is turned on and the image signal as the detailed information is recorded in the recording HDD 108. On the other hand, the MPEG2-Video decoder 201 converts a moving image of a channel including the additional information of the input MPEG2-Video stream 20 into a video signal 14 by a normal decoding operation, and outputs the video signal 14 to the signal synthesis means 105. The video signal 14 is combined with the image signal decoded by the MPEG2-Video still image decoder 400 stored in the frame memory 104 and output as a monitor signal 17. As a synthesis method, as in the above embodiments, two-screen division and an overlap format can be considered.
[0038]
The image signal stored in the recording HDD 108 as described above is turned on when the playback request signal 13 is input from the user and the switch 107 is turned on to be called to the frame memory 104. If there is a video signal that is currently being received as data, it is synthesized by the signal synthesis means 105 and output as a monitor signal 17.
[0039]
As described above, according to the fourth embodiment, the channel number or the still image number in which detailed information is recorded in the User Data area in the MPEG standard of the MPEG2-Video stream 20 is described as additional information. The MPEG2-Video still image decoder 400 decodes the MPEG2-Video stream 20 based on the image signal and the MPEG2-Video decoder 201 decodes the MPEG2-Video stream 20 as a signal. Since the synthesizing unit 105 synthesizes, the additional information data can be managed collectively.
[0040]
Instead of describing the additional information in the MPEG2-Video layer, the description in MPEG2-Systems may be defined separately in the same manner, and the same effect can be obtained. Hereinafter, this will be described with reference to FIG.
[0041]
In FIG. 8, the stream analysis unit 200 receives the MPEG2-Systems bit stream 20 (system stream) in which video, audio, and data are mixed, and supplies the video stream that the user is currently viewing to the main decoder 203. Also, the additional video data attached to the MPEG2-Systems bit stream (but only when it exists) is supplied to the additional information decoder 202.
[0042]
Each decoder 201, 202 decodes each input stream and converts it into a video signal. Which stream is the additional information of the video stream that the viewer is currently viewing is uniquely defined in the user-defined area according to the syntax defined in the MPEG2-System.
[0043]
Here, the additional information need not be a still image. In particular, moving images can be easily transmitted with digital transmission.
If there is a recording request 12 from the user, it is recorded as a stream in the recording HDD 108. At this time, since it is possible to record with compressed information, the capacity of the recording medium can be used effectively.
[0044]
When the reproduction request signal 13 is input from the user, only the additional information stream read from the recording HDD 108 is supplied to the additional information decoder 202 by the selector 204 and is decoded by the decoder 202 at 202. The decoded additional information is combined with the decoding result of the main image (the output of the main image decoder 203) by the signal combining unit 105 and output as the monitor output signal 17. As an output format on the monitor, a left and right two-screen split format, a picture-in-picture format, etc., which are both moving images, can be considered.
[0045]
Note that MPEG2-System and MPEG2-Video used in the above embodiments are standards defined as international standards.
In addition to displaying the data accumulated in each of the above embodiments on a cathode ray tube, the data may be output to a printing apparatus such as a printer.
[0046]
Further, each of the above embodiments may be in a bidirectional communication format and may be adapted to home shopping based on the accumulated data. As for the bidirectional communication format, for example, there is a known m as disclosed in JP-A-7-123375.
[0047]
In each of the above embodiments, only the additional information is recorded in the recording HDD 108, but a video signal may be recorded together with the additional information. In this case, since the timing at which the additional information is superimposed is delayed with respect to the video signal, in order to record the video signal based on the additional information, for example, a capacity capable of storing a video signal of about 15 seconds is required. It is necessary to provide an image memory.
[0048]
Further, in the second to fourth embodiments, the content of the additional information or the channel number or still image number of the additional information is recorded. By displaying the icon on the screen and selecting the icon, It is good also as a structure which acquires detailed information.
[0049]
That is, an object having detailed information, for example, a position on the screen where a product is displayed and its detailed information are defined in association with the transmission, and the icon is displayed on the receiving side according to the user's specification. Display the product with information at the position on the screen, and acquire detailed information corresponding to the selected icon position by decoding another channel or still image according to the icon selection by the user This can be displayed on the screen and recorded as necessary.
[0050]
As a description example of the additional information, a method of uniquely defining and using a user data area within the MPEG standard is conceivable. That is, if the identifier for additional information is, for example, “0000 0100” and a product code is “0110 0110 1111 1111 0000 0000”, then the definition is as follows.
[0051]
0000 0000 0000 0000 0000 0000 1011 0010… User Data Start Code (0xB2)
0000 0100 ... Identifier indicating additional information
0000 0000 ... The upper 8 bits of the 16 bits representing the X coordinate
1000 0000 ... the lower 8 bits of the 16 bits representing the X coordinate
0000 0001 ... The upper 8 bits of the 16 bits representing the Y coordinate
0000 0000 ... the lower 8 bits of the 16 bits representing the Y coordinate
0110 0110 ... first 8 bits out of product code 24 bits
1111 1111 ... The next 8 bits of the product code 24 bits
0000 0000 ... last 8 bits of product code 24 bits
0011 1011… Channel number (or still image number) on which detailed information is recorded
1100 1101… Channel number (or still picture number) on which detailed information is recorded
・ ・
・ ・
0000 0000 0000 0000 0000 0001 ... Code indicating the end of user data
[0052]
Based on such additional information, the decoder on the receiving side displays an icon at the described coordinate position on the screen, for example, the coordinate position of (128, 256) in response to the user's request, and the user uses a remote controller or the like. When the icon is selected, it is possible to decode a channel on which detailed information is recorded or a still image, and display detailed information such as a product displayed at the coordinate position on the screen. As in the above embodiments, recording and printing can be performed as necessary.
[0053]
Also in the present embodiment, the same effect can be obtained even if the additional information is described using the MPEG2-System user-defined area.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of an additional information capturing circuit of a television receiver according to a first embodiment of the present invention.
FIG. 2 is a block diagram illustrating a configuration of an additional information capturing circuit of the television receiver according to the second embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of an additional information capturing circuit of the television receiver according to Embodiment 1 of the present invention;
4 is a diagram (FIG. 4 (a)) showing a waveform of a line indicating the beginning of additional information of an NTSC signal input to the television receiver of the first embodiment, and a line indicating data of additional information of the NTSC signal. FIG. It is a figure (FIG.4 (b)) which shows the waveform of this.
FIG. 5 is a block diagram showing a configuration of an additional information capturing circuit of the television receiver according to Embodiment 2 of the present invention.
FIG. 6 is a block diagram showing a configuration of an additional information capturing circuit of the television receiver according to Embodiment 3 of the present invention.
FIG. 7 is a block diagram showing a configuration of an additional information capturing circuit of the television receiver according to Embodiment 4 of the present invention.
FIG. 8 is a block diagram illustrating a configuration of an additional information capturing circuit when the MPEG2-systems standard is used in the television receiver according to the fourth embodiment of the present invention.
[Explanation of symbols]
C1, C2 ... Additional information fetch circuit
M1 Additional information detecting means
M2 ... Conversion means
M3 ... Control signal
M4 ... Additional information writing switch means
M5: Additional information recording means
M6: Additional information reading means
M7: Signal synthesis means
M8: Digital television signal analysis means
M9: Video signal decoding means
M10: Conversion means
10 ... NTSC signal
11 ... Additional information display request signal
12 ... Additional information write request signal
13 ... Additional information reproduction request signal
14 ... Video signal
15 ... Control signal
16a, 16b ... coded additional analysis means
17 ... Monitor output signal
18: Signal indicating that additional information is being transmitted
19: Additional information
20 ... MPEG2-Video stream
100: Line 21 analysis means
101 ... AND circuit
102: Additional information detection means
103. Code / character / image conversion means
104: Frame memory
105. Signal synthesis means
106,107 ... switch
108 ... HDD for recording
109: Code / character conversion means
110: Code / image conversion means
200: Stream analysis means
201: MPEG2-Video decoder
202 ... Decoder for additional information
203 ... Decoder for main image
204 ... selector
300 ... Removable storage means such as floppy disk
400 ... MPEG2-Video still picture decoder

Claims (2)

A television receiver for receiving a digitally encoded television signal,
Analyzing the digitally encoded television signal and decoding the digitally encoded television signal, additional information indicating the position on the screen of an object having detailed image information obtained from the television signal. Digital television signal analysis means for separating and extracting from the output,
Means for displaying an icon on the monitor screen at a position specified by the additional information output by the digital television signal analyzing means;
Means for selecting the icon;
Image signal output means for decoding a digitally encoded television signal when an icon is selected and outputting detailed information transmitted corresponding to the position of the icon as an image signal; A featured television receiver. The television receiver according to claim 1.
A television receiver comprising detailed information recording means for recording the detailed information.

Images