JP4200893B2 - Data broadcast receiving system, data broadcast receiving apparatus, and data broadcast receiving method - Google Patents

Description

  The present invention relates to a data broadcast receiving system, a data broadcast receiving apparatus, and a data broadcast receiving method, and more particularly to a data broadcast receiving system, a data broadcast receiving apparatus, and a data broadcast receiving method suitable for use by a large number of people.

  A conventional data broadcast receiving system of this type is shown in FIG. 5 (see, for example, Non-Patent Document 1).

  Referring to FIG. 5, the data broadcast receiving system 50 includes a multiplexed stream input unit 401, a stream separation unit 402, a data storage unit 403, a data display screen generation unit 407, a video stream decoding unit 404, and a video. The storage unit 406, display screen switching unit 409, display unit 410, audio stream decoding unit 405, sound generation unit 411, and control signal input unit 408 are configured.

  The data broadcast receiving system 50 configured as described above operates as follows.

  The multiplexed stream input unit 401 inputs a stream obtained by multiplexing a video stream, an audio stream, and a data stream. The stream separation unit 402 separates the video stream, the audio stream, and the data stream from the stream input by the multiplexed stream input unit 401, respectively.

  The data storage unit 403 stores the data stream separated by the stream separation unit 402, and the data display screen generation unit 407 converts the data stream stored in the data storage unit 403 into a display screen according to the syntax, and the video stream The decoding unit 404 decodes the encoded video stream to generate a displayable video, and the video storage unit 406 stores the video decoded by the video stream decoding unit 404.

  The display screen switching unit 409 switches between the data display screen generated by the data display screen generation unit 407 and the video stored in the video storage unit 406.

  The display means 410 displays the screen switched by the display screen switching means 409, the audio stream decoding means 405 decodes the encoded audio stream to generate sound that can be generated, and the sound generation means 411 The voice decoded by the voice stream decoding means 405 is generated.

  The control signal input unit 408 transmits the operation instruction from the viewer transmitted by the remote controller or the like to the data display screen generation unit 407 or the display screen switching unit 409, thereby operating the data broadcast content or the data display screen and the video. Perform the switching operation.

  Therefore, the above-described data broadcast receiving system 50 is limited to only one person who can operate the data broadcast content or switch the display screen at the same time, and other users can also display the display screen by one operation. However, it is not suitable for use by a large number of people.

  Therefore, in order to solve the above disadvantages, information by category is extracted from the received data received by data broadcasting, and when the category of the information by category is set in the requested category list, the information by category is selected and displayed. In addition, by providing a data display device that displays received data separately from the video display device for television images, there is also a device that displays only information that meets the individual needs of the user on the data display device (for example, (See Patent Document 1).

  However, since the technique of Patent Document 1 selects and displays only the information by category corresponding to the category registered in advance as a request category list by the viewer from the data broadcast of the television broadcast, However, there is a drawback that it is impossible to operate and appreciate any data broadcasting of television broadcasting.

Japan Radio Industry Association “BS Digital Broadcasting Operation Regulations, Technical Data, ARIB, TR-B15”, February 2001, 1.1 edition (first volume), (pages 3-6 to 3-7) Japanese Patent Laid-Open No. 2001-145042

  As described above, the technology described in Non-Patent Document 1 is limited to only one person who can operate the data broadcast content or switch the display screen at the same time. Since the user is also affected by the change of the display screen, there is a problem that it is not suitable for use by a large number of people.

  In addition, since the technology described in Patent Document 1 selects and displays only the information by category corresponding to the category registered in advance as a request category list by the viewer from the data broadcast of the television broadcast, However, there is a problem that it is impossible to operate and appreciate any data broadcasting of television broadcasting.

  An object of the present invention is to solve the above-mentioned problems, and receive a data broadcast that allows a large number of viewers to operate and view an arbitrary data broadcast of a television broadcast without affecting other viewers. A system, a data broadcast receiving apparatus, and a data broadcast receiving method are provided.

The data broadcast receiving system of the present invention includes a multiplexed stream input means for inputting a stream obtained by multiplexing a video stream, an audio stream, and a data stream, and a stream output from the multiplexed stream input means as a video stream, an audio stream, and data. A stream separating unit that separates the stream, a data storage unit that stores the data stream separated by the stream separating unit, a video stream decoding unit that decodes the video stream separated by the stream separating unit, and a stream separating unit Audio stream decoding means for decoding the audio stream, video storage means for storing video data decoded by the video stream decoding means, control signal input means for inputting operation information from the viewer, control signal Enter A data display screen generating means for generating a data display screen and an operating information and video data stored in the data stream and a video storage means for storing in the data storage means from the means were generated by the data display screen generating means Data display means for displaying a data display screen, display control means having a control signal input means and data display means, video display means for displaying video data decoded by the video stream decoding means, and audio stream decoding Sound generation means for generating sound data decoded by the means, and a plurality of display control means are provided.

  The display control means has a terminal device.

  The terminal device has a personal digital assistant or a personal computer.

  The display control means and the data display screen generation means have a wireless transmission / reception means.

  The wireless transmission / reception means has an infrared transmission / reception interface.

The data broadcast receiving apparatus of the present invention includes a multiplexed stream input means for inputting a stream obtained by multiplexing a video stream, an audio stream, and a data stream, and a stream output from the multiplexed stream input means as a video stream, an audio stream, and data. A stream separating unit that separates the stream, a data storage unit that stores the data stream separated by the stream separating unit, a video stream decoding unit that decodes the video stream separated by the stream separating unit, and a stream separating unit Audio stream decoding means for decoding the audio stream, video storage means for storing the video data decoded by the video stream decoding means, data stream stored in the data storage means, and storage in the video storage means A and a in which the video data and a data display screen generating means for generating a data display screen, data display screen generating means, and receives the operation information by the control signal input means from a plurality of terminal devices received operation information A transmission / reception means for generating a data display screen from the data stream stored in the data storage means and the video data stored in the video storage means and transmitting the data display screen to the data display means of a plurality of terminal devices; The video stream decoding unit outputs the decoded video data to the video display unit, and the audio stream decoding unit outputs the decoded audio data to the sound generation unit.

  The transmission / reception means includes wireless transmission / reception means.

  The wireless transmission / reception means has an infrared transmission / reception interface.

  The terminal device has a personal digital assistant or a personal computer.

The data broadcast receiving method of the present invention includes a step of inputting a stream obtained by multiplexing a video stream, an audio stream, and a data stream by using a multiplexed stream input means, and a video stream, an audio stream, and data by using the stream separating means. A video stream decoding unit that inputs the audio stream to a video stream decoding unit, a data stream that is input to a data storage unit, and a video stream decoding unit that decodes the separated video stream. From the step of storing the video data in the video storage means, the operation information from the viewer input from the control signal input means of the display control means, the data stream stored in the data storage means, and the video data stored in the video storage means Data display screen A step of generating a data display screen by the generation means, a step of inputting operation information from the viewer to the data display screen generation means by a control signal input means of the display control means, and a data display screen generated by the data display screen generation means Is displayed by the data display means of the display control means, the step of displaying the video data decoded by the video stream decoding means by the video display means, and the sound data decoded by the audio stream decoding means by the sounding means A step of sounding, and a plurality of display control means are provided.

The control signal input means converts the operation information input into a control signal, determines whether the control signal is a data display signal, and displays the control signal as a data display when the control signal is a data display signal. A step of transmitting to the screen generating means and a step of determining whether the control signal is an end command when the control signal is not a data display signal are executed .

  The display control means has a terminal device.

  The terminal device has a personal digital assistant or a personal computer.

  The display control means and the data display screen generation means have a wireless transmission / reception means.

  The wireless transmission / reception means has an infrared transmission / reception interface.

  A data broadcast receiving system, a data broadcast receiving apparatus, and a data broadcast receiving method of the present invention separate a data display means for displaying a data broadcast and a video display means for displaying a program video, and provide a control signal input means and a data display. By providing as many display control means as the number of users of data broadcasting, a large number of viewers can operate any data broadcasting of television broadcasting without affecting other viewers. There is an effect that you can appreciate.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a configuration block diagram showing an embodiment of a data broadcast receiving system of the present invention.

  Referring to FIG. 1, the data broadcast receiving system 1 includes a data broadcast receiving device 100, a plurality of display control means 112, a video display means 110 for displaying video data, and a sound generation means 111 for generating audio data. To do.

  The data broadcast receiving apparatus 100 includes a multiplexed stream input unit 101 that inputs a stream obtained by multiplexing a video stream, an audio stream, and a data stream, and a stream output from the multiplexed stream input unit 101 as a video stream, an audio stream, and data. Stream separating means 102 for separating the stream, data storage means 103 for storing the data stream separated by the stream separating means 102, video stream decoding means 104 for decoding the video stream separated by the stream separating means 102, An audio stream decoding unit 105 for decoding the audio stream separated by the stream separation unit 102; a video storage unit 106 for storing the video data decoded by the video stream decoding unit 104; Composed of the video data stored in the data stream and the video storage unit 106 stored in the over data storage unit 103 and data display screen generation section 107 for generating a data display screen.

  The display control unit 112 includes a control signal input unit 108 for inputting operation information from the viewer, and a data display unit 109 for displaying the data display screen generated by the data display screen generation unit 107.

  Next, the operation of the data broadcast receiving system 1 configured as described above will be described with reference to the drawings.

  FIG. 2 is a flowchart showing the operation of the data broadcast receiving system 1.

  Referring to FIG. 1, a multiplexed stream input unit 101 inputs a multiplexed stream of a video stream, an audio stream, and a data stream. The stream separation unit 102 separates the stream input from the multiplexed stream input unit 101 into a video stream, an audio stream, and a data stream, and the video stream decoding unit 104, the audio stream decoding unit 105, and the data storage unit 103, respectively. Output to.

  The data display screen generation means 107 corresponds to the control signal from the control signal input means 108, and displays the data display screen from the data stream stored in the data storage means 103 and the video data stored in the video storage means 106. And the generated data display screen is transmitted to the data display means 109.

  The video stream decoding unit 104 decodes the separated video stream, stores the combined video stream in the video storage unit 106, and inputs the decoded video stream to the video display unit 110. The video display unit 110 displays the video data. To do.

  The audio stream decoding unit 105 decodes the separated audio stream, inputs the combined audio stream to the sound generation unit 111, and the sound generation unit 111 generates the sound.

  The display control unit 112 receives the operation of the viewer by the control signal input unit 108 and displays the result of the operation on the data display unit 109. The operation will be described below with reference to FIG.

  First, the control signal input means 108 determines whether or not there is a viewer operation input (step A1), and if there is an input, the input signal is converted into a control signal by a converter (not shown) (step A2). After conversion to the control signal, it is determined whether or not the control signal is related to data display (data display signal) (step A3).

When the control signal is related to data display, the control signal is transmitted to the data display screen generation means 107, and the data display screen generation means 107 generates a data display screen according to the received control signal (step A4). The generated data display screen is transmitted to the data display means 109 of the display control means 112 that has transmitted the control signal, and the data display means 109 displays the received data display screen (step A5).

  When the data display is completed, the process returns to the above (Step A1), and the control signal input means 108 waits for an operation input by the viewer.

  In the above (Step A3), if the control signal is not related to data display, it is determined whether or not the control signal is an end command (Step A6).

  If it is not an end command, the process returns to the above (Step A1), and the control signal input means 108 waits for a viewer's operation input, and if it is an end command, the process ends (Step A7).

  Note that the display control unit 112 and the data display screen generation unit 107 include an infrared transmission / reception interface (not shown) and perform wireless communication.

  As described above, the display control unit 112 is provided for the number of users of the data broadcast, the video stream is displayed on the video display unit 110, and the data stream is displayed on the data display unit 109. When one person performs an operation related to data display, it affects only the data display means 109 of the operator, and does not affect the video display means 110 viewed by all others. Each viewer can operate and appreciate any data broadcasting of television broadcasting according to his / her preference.

  Next, specific examples of the present invention will be described with reference to the drawings.

  FIG. 3 is a block diagram showing a specific embodiment of the data broadcast receiving system of the present invention.

  Here, the comparison relationship with the components of the data broadcast receiving system 1 shown in FIG. 1 will be mainly described.

  Referring to FIG. 3, the data broadcast receiving system 2 includes a data broadcast receiving device 300, a plurality of personal digital assistants (PDAs) 308, which are terminal devices, a display 311 and an amplifier 312. A BS (Broadcast Satellite) digital television broadcast transmitted by 2TS (Moving Picture Experts Group Phase 2 Transport Stream) is received.

  The terminal device may be a personal computer instead of the PDA 308.

  The data broadcast receiving apparatus 300 includes an IEEE (The Institute of Electrical Engineers) 1394 interface 301, an MPEG-2 TS splitter 302, an MPEG-2 video decoder 304, an MPEG-2 audio decoder 305, and a BML (Broadcast Markup Language). ) A document buffer 303, a video buffer 306, a BML browser 307, a video DAC (Digital-Analog Converter) 309, and an audio DAC 310.

  The IEEE 1394 interface 301 corresponds to the multiplexed stream input unit 101 in FIG. 1 and inputs MPEG-2 TS transmitted through the IEEE 1394 interface.

  The MPEG-2 TS splitter 302 corresponds to the stream separation means 102 in FIG. 1 and refers to a PID (Packet IDentifier) in a packet header (not shown) of the MPEG-2 TS input by the IEEE 1394 interface 301, and a video stream And the audio stream and the data stream are separated.

  As shown in FIG. 4, the video stream, the audio stream, and the data stream correspond to the PIDs 1, 2, and 3 in the packet header, and the MPEG-2TS splitter 302 refers to the PID, Streams can be separated.

  The BML document buffer 303 corresponds to the data storage unit 103 in FIG. 1 and holds BML documents in the data stream separated by the MPEG-2 TS splitter 302.

  The MPEG-2 video decoder 304 corresponds to the video stream decoding unit 104 in FIG. 1 and decodes the MPEG-2 video stream separated by the MPEG-2 TS splitter 302.

  The MPEG-2 audio decoder 305 corresponds to the audio stream decoding unit 105 in FIG. 1 and decodes the MPEG-2 audio stream separated by the MPEG-2 TS splitter 302.

  The video buffer 306 corresponds to the video storage unit 106 in FIG. 1 and holds the video data decoded by the MPEG-2 video decoder 304.

  The BML browser 307 corresponds to the data display screen generation unit 107 in FIG. 1 and is held in the BML document display screen and video buffer 306 held in the BML document buffer 303 in accordance with the viewer's operation on the PDA 308. A display screen of the video data that is being recorded.

  The video DAC 309 corresponds to the video display unit 110 in FIG. 1 together with the display 311, converts the decoded digital video signal into an analog video signal, and displays the video video on the display 311.

  The audio DAC 310, together with the amplifier 312, corresponds to the sound generation unit 111 in FIG. 1 and converts the decoded digital audio signal into an analog audio signal to generate sound.

  Needless to say, the video DAC 309 may be provided inside the display 311, and the audio DAC 310 may be provided inside the amplifier 312.

  The PDA 308 corresponds to the display control unit 112 in FIG. 1, receives a viewer's operation, and displays the operation result.

  Note that transmission / reception of signals between the PDA 308 and the BML browser 307 is performed by an infrared transmission / reception interface (not shown).

  In the PDA 308, an input operation equivalent to that of a mouse can be performed by pressing the screen with a pen. Therefore, a control signal is generated by pressing a button or the like on the displayed data broadcast screen, and the BML document is displayed on the BML browser 307. The hyperlink is activated to cause screen transition, and the updated data display screen is displayed on the PDA screen.

1 is a configuration block diagram showing an embodiment of a data broadcast receiving system of the present invention. It is a flowchart which shows operation | movement of the data broadcast receiving system of this invention. It is a block diagram showing a specific embodiment of the data broadcast receiving system of the present invention. It is a figure for demonstrating PID. It is a block diagram showing a conventional data broadcast receiving system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Data broadcast receiving system 50 Data broadcast receiving system 100, 300 Data broadcast receiving apparatus 101 Multiplexed stream input means 102 Stream separation means 103 Data storage means 104 Video stream decoding means 105 Audio stream decoding means 106 Video storage means 107 Data display screen generation means 108 Control signal input means 109 Data display means 110 Video display means 111 Sound generation means 112 Display control means 301 IEEE1394 interface 302 MPEG-2 TS splitter 303 BML document buffer 304 MPEG-2 video decoder 305 MPEG-2 audio decoder 306 Video buffer 307 BML browser 308 PDA
309 Video DAC
310 Audio DAC
311 Display 312 Amplifier 401 Multiplexed stream input means 402 Stream separation means 403 Data storage means 404 Video stream decoding means 405 Audio stream decoding means 406 Video storage means 407 Data display screen generation means 408 Control signal input means 409 Display screen switching means 410 display means 411 pronunciation means

Claims (15)

A multiplexed stream input means for inputting a stream obtained by multiplexing a video stream, an audio stream, and a data stream; and the stream output from the multiplexed stream input means is separated into the video stream, the audio stream, and the data stream Stream separating means, data storage means for storing the data stream separated by the stream separating means, video stream decoding means for decoding the video stream separated by the stream separating means, and the stream separating means and audio stream decoding means for decoding the separated the audio stream, a video storage means for storing the video data decoded by the video stream decoding means, control signal input means for inputting operation information from the viewer A data display screen generating means for generating a data display screen from the operation information from the control signal input means, the data stream stored in the data storage means and the video data stored in the video storage means; A data display means for displaying the data display screen generated by the data display screen generation means, a display control means having the control signal input means and the data display means, and the video stream decoding means A data broadcast receiving system comprising: video display means for displaying the video data; and sound generation means for sounding the audio data decoded by the audio stream decoding means, wherein a plurality of display control means are provided. .   The data broadcast receiving system according to claim 1, wherein the display control means includes a terminal device.   3. The data broadcast receiving system according to claim 2, wherein the terminal device includes a personal digital assistant or a personal computer.   2. The data broadcast receiving system according to claim 1, wherein the display control means and the data display screen generation means include wireless transmission / reception means.   5. The data broadcast receiving system according to claim 4, wherein the wireless transmission / reception means has an infrared transmission / reception interface. A multiplexed stream input unit that inputs a stream obtained by multiplexing a video stream, an audio stream, and a data stream; and the stream that is output from the multiplexed stream input unit is separated into the video stream, the audio stream, and the data stream Stream separating means, data storage means for storing the data stream separated by the stream separating means, video stream decoding means for decoding the video stream separated by the stream separating means, and the stream separating means Audio stream decoding means for decoding the separated audio stream, video storage means for storing video data decoded by the video stream decoding means, and the data stream stored in the data storage means And a data display screen generating means for generating a data display screen from the video data stored in the video storage means, and the data display screen generating means receives control signals from a plurality of terminal devices. A plurality of the terminal devices that generate the data display screen from the operation information received and received by the means, the data stream stored in the data storage means, and the video data stored in the video storage means Transmitting / receiving means for transmitting the data display screen to the data display means, wherein the video stream decoding means outputs the decoded video data to the video display means, and the audio stream decoding means is for decoding The data broadcast receiving apparatus is characterized in that the sound data thus output is output to a sounding means.   7. The data broadcast receiving apparatus according to claim 6, wherein the transmission / reception means includes wireless transmission / reception means.   8. The data broadcast receiving apparatus according to claim 7, wherein the wireless transmission / reception means has an infrared transmission / reception interface.   7. The data broadcast receiving apparatus according to claim 6, wherein the terminal device includes a personal digital assistant or a personal computer. A step of inputting a stream obtained by multiplexing a video stream, an audio stream, and a data stream by a multiplexed stream input unit, and separating the input stream into the video stream, the audio stream, and the data stream by a stream separation unit. A step of inputting the separated video stream to a video stream decoding unit; a step of inputting the audio stream to a sound stream decoding unit; and a step of inputting the data stream to a data storage unit; and a video decoded by the video stream decoding unit A step of storing data in the video storage means, operation information from a viewer input from the control signal input means of the display control means, the data stream stored in the data storage means, and the video stored in the video storage means data Generating a data display screen by the data display screen generating means, inputting operation information from the viewer to the data display screen generating means by the control signal input means of the display control means, and the data display screen generating means Displaying the data display screen generated by the data display means of the display control means, displaying the video data decoded by the video stream decoding means by the video display means, and the audio stream decoding And a step of sounding the sound data decoded by the sound generating means, wherein a plurality of the display control means are provided.   The control signal input means converts the operation information input into a control signal, determines whether or not the control signal is a data display signal, and controls the control signal when the control signal is a data display signal. The step of transmitting a signal to the data display screen generating means and the step of determining whether or not the control signal is an end command when the control signal is not a data display signal are performed. The data broadcast receiving method described.   11. The data broadcast receiving method according to claim 10, wherein the display control means includes a terminal device.   13. The data broadcast receiving method according to claim 12, wherein the terminal device includes a personal digital assistant or a personal computer.   11. The data broadcast receiving method according to claim 10, wherein the display control means and the data display screen generation means include wireless transmission / reception means. 15. The data broadcast receiving method according to claim 14, wherein the wireless transmission / reception means has an infrared transmission / reception interface.

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