JPH1084536A - Television broadcast system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide selectivity for a compression system and an expansion system of a video image to be broadcast. SOLUTION: A reception section 108 of a receiver 102 receives a program channel on which a plurality of video information sets are multiplexed and control information as to a selected program channel. A reception control section 114 instructs a signal separator section 109 to separate the output of video information multiplexed on a designated program channel by the control information. Furthermore, a decoding program included in the control information is fed to a decoding section 110. The decoding section 110 executes the received decoding program and decodes the video information outputted from the signal separator section 109 and displays the information on a display section 111.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast communication system such as a television broadcast and a radio broadcast, and more particularly to a broadcast system characterized by transmitting and receiving control information for viewing broadcast contents.

[0002]

2. Description of the Related Art At present, various broadcasting systems are used for television broadcasting.

For example, in Japan, the NTSC system is generally used, and in other countries, in addition to the NTSC system, a PA
The L system and the SECAM system are used.

[0004] In addition, an ISDV (Iiteg) for performing time-division multiplexing transmission after digitizing and compression-encoding a video signal.
rated Services Digital Br
An oadcasting method is being studied.

In general, a single receiver can receive a plurality of broadcasts allocated to different channels as long as the broadcasts are of the same broadcast format. Then, the viewer can select from a plurality of channels that can be received by the receiver owned by the viewer.
One channel is selected according to the required information, and the video of the channel is viewed.

[0006]

However, in such a broadcasting system, a broadcasting standard for broadcasting is uniquely determined. Therefore, it is not possible to flexibly select a compression method or a multiplexing method according to the video to be broadcasted.
The services that can be provided to viewers are limited.

Further, as described above, in the conventional broadcasting system, the viewer can select one channel from a plurality of channels in accordance with desired information. However, within one channel, the viewer has no right to select a video, and is only allowed to passively view a video broadcast on the selected channel. However, the information required for each viewer is different. Therefore, it is desirable that a video can be selected flexibly in accordance with information required even within one channel.

[0008] In view of the above, the present invention provides a television broadcast having flexibility in a compression system, a multiplexing system, and the selectivity of a video of a viewer so that various services can be provided to the viewer. The aim is to provide a scheme.

[0009]

To achieve the above object,
According to the present invention, a transmitting device transmits a broadcast target video, and a receiving device is a television broadcasting system for receiving and displaying the transmitted broadcast target video, wherein the transmitting device transmits the broadcast target video according to a predetermined standard. Transmitting control information that is information for specifying a transmission method of the broadcast target video, the receiving device receives the control information based on the predetermined standard, and based on the received control information, the transmitting device. And a television broadcast system for receiving and displaying the broadcast target video transmitted from the TV.

[0010]

According to the television broadcasting system of the present invention,
The receiving device receives the control information based on the predetermined standard, obtains a transmission method of a broadcast target video from the received control information, and receives a broadcast target video transmitted from the transmission device based on the transmission method. indicate.

[0011] Accordingly, the transmission method such as the encoding method and the multiplexing method can be flexibly selected according to various situations such as the characteristics of the video to be transmitted and various services can be provided to the viewer. Can be provided.

[0012]

An embodiment of the present invention will be described below.

First, the configuration of a television broadcasting system according to the present embodiment is shown in FIG.

As shown in the figure, the television broadcasting system according to the present embodiment comprises a transmitting device 101 and a receiving device 102.
It is composed of

The transmitting device 101 transmits broadcast information, and the receiving device 102 receives the broadcast information and displays the broadcast content.
The broadcast of the broadcast information from the transmission device 101 may be a wireless broadcast or a cable broadcast. That is, in addition to general television broadcasting using radio, broadcasting by so-called cable television or the like may be used.

The transmitting device 101 includes a plurality of input devices 10
3. Consisting of a signal synthesis coding unit 104, a transmission unit 105, a program storage unit 106, and a transmission control unit 107.

The receiving apparatus 102 includes a receiving unit 108, a signal separating unit 109, a decoding unit 110, a display unit 111, a received signal storage unit 112, a user operation input unit 113, and a reception control unit 1.
14.

The operation of each section of the transmitting apparatus 101 is as follows.

Each input device 103 takes in broadcast content information such as text, images, moving images, and audio to be broadcast into the transmitting device 101.

The program storage unit 106 stores control information for each broadcast channel. The control information is information for controlling the broadcast content of the corresponding broadcast channel, as described later.

The signal encoding / combining unit 104 encodes each broadcast content information report received by the plurality of input devices 103. Further, each control information in the program storage unit is received and encoded. At this time, a parity error correction code is added to each control program in order to perform error correction on the receiving side.

The signal coding / synthesizing unit 104 time-division multiplexes the coded broadcast content information for each broadcast channel and sends the multiplexed broadcast content information to the transmitting unit. Also, the coded control information is time-division multiplexed with other control information and sent to the transmission unit.

The transmitting section 105 includes a signal combining / encoding section 104
The broadcast content information time-division multiplexed for each broadcast channel is modulated at a specific frequency for each broadcast channel and transmitted. Further, the control information time-division multiplexed is modulated at a specific frequency and transmitted.

Also, the transmission control unit 107
1 controls the operation of each unit.

FIG. 2 shows the relationship between the moving image information transmitted from the transmitting device and the control information. The example shown in FIG. 2 shows a case where all broadcast content information is a moving image.

In the figure, 200, 210, and 220 are broadcast content information time-division multiplexed for each broadcast channel. As shown, for the broadcast channel 200, three moving images 201, 202, and 203 are included in a broadcast channel 210.
Are two moving images 211 and 212, and the broadcast channel 220 is four moving images 221, 222 and 22.
3 are time division multiplexed.

The broadcast channel 230 is time-division multiplexed with control information 251, 252, and 253 for controlling broadcast contents of the broadcast channels 200, 210, and 220, respectively.

In the broadcast channel 230, each control information 251, 252, 253 is time-division multiplexed in a predetermined order, and a synchronization flag for specifying the position of each control information is included in the control information. Add. The control information is repeatedly broadcast at certain intervals as long as the control information is valid. This is because program channel reception may be started in the middle of a program.

Hereinafter, a broadcast channel in which the control information is time-division multiplexed is called a "control channel", and a broadcast channel in which the broadcast content information is time-division multiplexed is called a program channel.

Next, the operation of each section of the receiving apparatus 102 will be described.

[0031] The user operation input unit 113 is
2 is fetched by the receiver. It is assumed that a program channel desired to be viewed has been selected as an instruction of the receiver. Here, the receiver is only allowed to select a broadcast channel excluding a control channel, that is, a program channel.

The receiving unit 108 receives and demodulates the control channel transmitted from the transmitting device 101.

The signal separating unit 109 separates the time-division multiplexed control information in the control channel demodulated by the receiving unit 108, and extracts control information on the selected program channel based on the synchronization flag. To decrypt. The signal separating unit 109 checks the parity code added to the control signal, and if there is an error, performs error correction.

Receiving control section 114 sets receiving section 108, signal separating section 109, and decoding section 110 according to the decoded control information.

Receiving section 108 receives and demodulates the selected program channel according to the contents set by reception control section 114.

The signal separating unit 109 separates each broadcast content information in the demodulated program channel in accordance with the setting contents from the reception control unit 114, and passes any of the separated broadcast content information to the decoding unit 110. .

[0037] Decoding section 110 decodes broadcast content information in accordance with the settings made by reception control section 114. In the present embodiment, the decoding unit 110 is a DSP (Digital
(Signal processor). Then, decoding section 110 executes the decoding program set by reception control section 114.

The display unit 111 receives the decoded broadcast content information from the decoding unit 110 and displays it.

Next, the contents of the control information used in this embodiment will be described. The control information is generated for each program broadcast on the program channel.

FIG. 3 shows the contents of the control information. The illustrated example shows control information on a program channel in which all of the time-division multiplexed broadcast content information is moving image data.

As shown, the control information 300 includes a program ID 310, image information 320, communication information 330,
It comprises a control program 340.

The program ID 310 is a unique identification number assigned to each control information for each broadcast program.

The image information 320 is information for notifying an image to be transmitted by a program channel corresponding to the control information.

The image information 320 includes an image size 321, an image frame number 322, a pixel configuration 323, and a pixel arrangement 3
24.

The image size indicates the number of vertical and horizontal pixels of the image. The number of image frames is the frame rate of the image per second.
And the number of videos multiplexed in the corresponding program channel.

The pixel configuration is such that one pixel has each R
Indicates how many bits are represented for the GB component. In the case of the example shown in the figure, each bit is 8 bits (256 gradations).

The pixel arrangement indicates how each color component information is stored in the moving image data. The example shown in FIG. 3 indicates that each color component is stored in one screen unit in the order of the R screen, the G screen, and the B screen.

The communication information 330 includes a communication system 331, a bit number 332, and a synchronization frame signal 333.

The communication method 330 is information for notifying the communication method of the program channel corresponding to the control information. The illustrated example shows that the corresponding program channel employs pulse code frequency modulation (PCM / FM) as the communication method.

The number of bits 342 indicates the bit length of the data. In the illustrated example, it is 8 bits. The synchronization frame signal 343 indicates a data value used for a synchronization frame serving as a reference for the position of moving image data on the program channel. In the illustrated example, the data of the synchronization frame is OxFFFFFFFF.

The control program 340 includes the reception control unit 1
14, which is a program for decoding a moving image of a selected program channel and performing various services.

The control program 340 includes a control program 341, a decryption program 342, and interactive screen data 3
43.

The control program 341 is a program for providing various services for a program channel corresponding to the control information.

The image decoding program 342 is a program for decoding the encoded and transmitted image information. In the illustrated example, a run-length decoding program is stored.

The interactive screen data 343 is screen data used by the control program to provide various services to the viewer.

As described above, the transmitting apparatus 101 includes, in the control information, information necessary for reproducing the transmitted broadcast content information and a program for updating the broadcast content information.

Hereinafter, a first operation example of the television broadcasting system according to the present embodiment will be described.

Now, consider a program for broadcasting the cooking situation photographed simultaneously by a plurality of cameras.

FIG. 4 shows such a program broadcast.

First, the operation of the transmitting device will be described.

In the figure, the input device 1 in the transmission device,
Reference numerals 2 and 3 (401, 401, and 403) capture a hand image, a kitchen knife surface image, and an entire worker image, respectively. The image captured by the input device 1 is referred to as Image 1, the image captured by the input device 2 is referred to as Image 2, and the image captured by the input device 3 is referred to as Image 3.

The transmission equipment value 101 is obtained by a signal combining / encoding unit.
Each photographed image is digitally sampled, and the sampled data is compression-encoded by a run-length method for each frame, and each of the image data after compression-encoding is frame-by-frame in the order of Image 1, Image 2, and Image 3. Time-division multiplexing is performed sequentially. Then, the transmitting unit 195 modulates the frequency with the frequency assigned to the program channel 404 and transmits the modulated signal on the program channel 404. In addition to the above, as a main image coding method, there is a method using DCT (Discrete Cosine Transform), and in this embodiment, sampled image data is compressed and coded by the DCT method. Is also good. When compression encoding is performed by the DCT method, the program for decoding the control information image is inverse DC.
This is the program that executes T.

The control information for controlling the image 1, image 2, and image 3 on the program channel 404 by the receiving device is read out from the program storage unit to the signal combining and encoding unit 104, and the control information for the other program channels is read. Time division multiplexing with control information. Then, transmission section 105 modulates the time-division multiplexed control information and transmits the modulated control information on the control channel.

Here, the control information for the program channel 404 includes, as the control program 341, a program for allowing the receiver to select an image from which camera to display.

Next, the operation of the receiving apparatus 102 for receiving the program channel 404 will be described with reference to the flow charts shown in FIGS.
It is explained along with

When reception starts, the reception control unit 114 first checks the program channel to be received (step 50).
2) Read the program ID and 310 (FIG. 3, FIG. 3) in the control information for the program channel 404 decoded by the signal separation unit 109 (step 503).
The received control information is compared with the program ID of the received control information (step 504), and if different, the current control information is loaded into the reception control unit 114 as new control information (step 505). After loading the control information, the reception control unit executes the control program 341 in the control information (Step 506).

FIG. 6 shows a flowchart of the control program.

As shown, the control program is executed as follows.

First, the receiving unit 108, the signal separating unit 109, and the decoding unit 110 are set according to the received control information (step 601). Specifically, communication information 330 in the control information is sent to receiving section 108. The receiving unit 108
Data on the program channel 404 is sequentially demodulated based on this information. Then, the demodulated data is sent to signal separation section 109. In addition, the reception control unit 114 controls the signal separation unit 1
09, the image information 320 is sent. Based on this information, the signal separating unit 109 extracts the data of the image 1, the data of the image 2, and the image 3 from the demodulated data on the program channel 404.
, And passes any of the separated image data to the decoding unit 110 according to an instruction to the reception control unit 114.
Now, at the start of the reception, the data of the image 1 is passed to the decoding unit 110 as a default (step 60).
2). Hereinafter, the image based on the image 1 data is referred to as screen 1, the image based on the image 2 data is referred to as screen 2, and the image based on the image 3 data is referred to as screen 3. The reception control unit 114 sends the image decoding program 341 to the decoding unit 110. By executing the image decoding program, the decoding unit 110 decodes the image data received from the signal separation unit 109 and displays the image data on the display unit 111.

Then, the screen data specified in the control program of the interactive screen data 343 is displayed superimposed on the display screen of the display unit (step 60).
3). As a result, a user selection menu as indicated by reference numeral 404 in FIG. This user
The selection menu allows the user to select an image to be displayed on the display unit.

Next, the following processing is performed for each image frame (step 604).

The reception control unit 114 has a user selection menu.
(Step 60)
7) Instruct the signal separating unit 109 to switch the output to the designated image data. This image data is decoded and displayed on the display unit 111. That is, the viewer can select and view any video from the hand image of the cooking scene, the kitchen knife image, and the entire worker image (step 608).
611).

The reception control unit 114 controls each image frame.
For each program, it is checked whether the program ID of the control information to be received has been changed or whether the program channel has been switched by the user (steps 605 and 606). Alternatively, if the program channel has been switched, the control program is terminated, and the process returns to the initial processing for capturing the control information.

As described above, according to the present embodiment, the control information can specify the multiplicity of the broadcast content information on each program channel, the coding rule of the broadcast content information, and the like to the receiving device. Therefore, the transmitting side can broadcast in a mode according to the provided service. In particular, by transmitting a program for decoding the encoded broadcast content information to the receiving device by using the control information, it is possible to use various kinds of coding rules.

Further, a program for controlling the display of broadcast content information on each program channel in response to a request of the user can be sent to the receiving side by the control information. Can flexibly use broadcast content information in response to a request from the user.

That is, according to the broadcasting system of the present embodiment, broadcasting can be realized if there is only a standard relating to control information, and there is no need for a unique standard on a program channel.

In the above description, in the receiving apparatus 102, the control information on the selected program channel is
This is effective for broadcast content information received between the reception of control information and the next reception of different control information. However, the image broadcast content information to be controlled by the control information may be specified, and the control information may be made valid only for the specified broadcast content information. For this, in the transmitting device 101, information about the broadcast content information to be controlled by the control information is stored and transmitted in the control information, and the receiving device temporarily stores the received control information, When the received control information receives the broadcast content information to be controlled, the control information becomes valid, and when the received control information ends, the control information becomes invalid. What should I do?

In the above description, the broadcast frequency of the program channel is fixed, but the broadcast frequency of the program channel may be variable. In this case, the transmitting apparatus 101 stores and transmits information designating the broadcast frequency of the corresponding program channel in the control information,
The reception control unit 114 of the receiving apparatus 102 instructs the receiving unit 108 on the broadcast frequency to be received, based on the broadcast frequency information in the control information corresponding to the selected program channel.

In the above description, the control channel and the program channel are provided separately. However, the control information may be transmitted multiplexed with the broadcast content information on any given program channel. . However, in this case, the multiplexing position of the control information and the broadcast frequency of the program channel in which the control information is multiplexed are fixed. This is because the receiving apparatus 102 can uniquely receive the control information corresponding to the selected program channel in accordance with the viewer's selection of the program channel.

In this embodiment, the decoding unit 11
0 is constituted by a DSP and a decoding program is set, thereby enabling decoding of broadcast content information of an arbitrary coding rule. However, when the types of encoding schemes used in broadcasting are limited, a dedicated encoding unit may be provided for each of the protection right schemes used legally to decode the broadcast content information. In this case, the transmitting device is 101,
In the control information, information specifying the encoding method is stored in place of the screen decoding program. Then, the reception control unit 114 of the receiving apparatus 102 activates only the decoding unit corresponding to the specified coding scheme according to the coding scheme specification information.

Hereinafter, a second example of the broadcasting system according to the present embodiment will be described.
An example of the operation will be described.

In this operation example, broadcast content information is temporarily stored and used.

Recording of broadcast content information is performed as follows.

When a program channel to be recorded is set by the viewer, the reception control section 114 records control information on the set program channel and program channel data in the reception signal recording section 112 in parallel. However, when the received signal recording unit 112 cannot store the data in parallel, the control information and the data of the program channel are multiplexed and recorded, and are separated at the time of reproduction and restored to two parallel signals.
If the control information changes during recording, the control information after the change is also recorded. Each broadcast content information on the program channel is provided with a program name header for each program.
It is assumed that a unique title is added as a header to each group of information in a program. Received signal recording unit 1
A video tape deck, a rewritable optical disk device, or the like can be used as 12.

The operation of reproducing the broadcast content information recorded in the reception signal recording section 112 will be described with reference to the flowchart shown in FIG.

When there is a reproduction instruction from the user operation input unit 113, the reception control unit 114 checks the control information recorded in the reception signal recording unit 112 in the order of recording.
If the control information is detected, the program ID 310 of the control information is compared with the current program ID (step 702). If different, the reception control unit 11
4, the control program 341 is loaded from the control information (step 704), and the control program 341 is executed (step 705).

FIG. 7 is a flowchart of a control program used in this operation example.

As shown in the figure, the reception control unit 114 that has started executing the control program 341 first receives the
8, the communication information 330 in the control information is transmitted to the signal separation unit 109.
And the image decoding program 341 in the decoding unit 110 (step 801).

Next, the reception signal storage unit 11
It is confirmed whether or not reproduction is instructed from step 2 (step 802).

When the reproduction is not instructed, the normal processing described in the first operation example (see FIG. 6) is performed. When the reproduction is instructed, the relationship between each broadcast content information in the program corresponding to the control information and the recording position on the reception signal recording unit 112 is broadcast for each title attached to the broadcast content information. It is checked from the header of the content information (step 804).

Then, the following processing is performed until the reproduction is completed (step 805).

That is, first, as shown in FIG. 10, a program name 1001 corresponding to the control information and a reproduction menu 10
00 is displayed on the display unit 111 (step 806). The menu items are the titles 1002 to
1004 and the next program 1006. The example shown in FIG. 10 is a “news program” including information titled “With me” and information titled “weather forecast”.
This is an example in the case of reproducing a program called “. Titles 1002 to 1004 of each information in the program correspond to titles attached to the broadcast content information.

Next, when the viewer designates the title of the information to be viewed from the reproduction menu through the user operation input section 113 (step 807), the corresponding title is set in the header according to the designation. Is reproduced (steps 808 and 809).

If the next program is designated, the reproduction start position is advanced to the end position of the broadcast content information to which the current program name is added as a header (step 810), and the control processing of the previous control signal is performed. Run from

The reproduction of the broadcast content information information with the title specified by the viewer as a header is shown in FIG.
Is performed according to the flowchart shown in FIG.

That is, first, the reception control section 114 deletes the display of the menu screen shown in FIG. 10 (step 901). Next, the storage position of the earliest broadcast content information and the storage position of the final broadcast content information with the designated title as a header are obtained (steps 902 and 90).
3).

Then, the broadcast content information from the obtained earliest position to the final position is reproduced (step 904,
905). The reproduced broadcast content information is decoded by the decoding unit 110 and displayed on the display unit 111. The decoding unit 110 decodes the broadcast content information reproduced by the reception control unit based on the set image decoding program 341.

As described above, according to the present embodiment, only the necessary information portion can be reproduced from the stored programs.

Hereinafter, a third operation example according to this embodiment will be described.

In the third operation example, as shown in FIG. 11, an external device is connected to the receiving device 102 and controlled.

In FIG. 11, reference numeral 1101 denotes an external device control unit, 1102 denotes an electronic keyboard, 1103 denotes an electronic guitar, 1104 denotes a mixer, and 1105 denotes a speaker.

Electronic keyboard 1102, Guitar-1103
Is MIDI (Musical Instrument Digital Interfac
An electronic musical instrument that can be controlled according to e).

In this operation example, transmitting apparatus 101
The sound of each musical instrument being played is separated and encoded, and each is broadcast as time-division multiplexing as broadcast content information and transmitted on a program channel. The control information corresponding to the program includes a decoding program for decoding the encoded sound of each musical instrument, and MIDI data which is control information of an external musical instrument connected to the receiving device. The MIDI data is created for each part included in the performance and included in the control information. Further, the control program 341 in the control information includes a program for receiving designation of an external musical instrument controlled by MIDI data. The control information is transmitted to the receiver in synchronization with the performance transmitted on the program channel.
DI data is transmitted so that it can be used in real time.
The broadcast content information is transmitted with synchronization data for synchronizing with the MIDI data.

On the other hand, on the receiving apparatus side that has selected this program, upon receiving the control information, the reception control section 114 activates the control program, and decodes the decryption program.
Set to. The decoding unit 110 decodes the received sound according to a decoding program, and synthesizes and outputs the sound of each instrument.

Further, reception control section 114 displays the screen shown in FIG. 12A on display section 111, and displays the MID
Indicating that I data is available,
Accepts the start of using DI data.

If the use of the MIDI data is designated, a menu shown in FIG. 12B is displayed, and the designation of performing the automatic performance or the manual performance is received, and the MIDI data is received.
A part that wants to use DI data is accepted.

It is specified that automatic performance is to be performed.
When a part for which data use is desired is specified, the decoding unit 110 is instructed not to output audio for the specified part. Then, based on the synchronization data attached to the broadcast content information, the external device control unit 110 controls the connected electronic musical instrument to play in synchronization with the sound being output.
It outputs the MIDI data of the part specified in 1.

The external device control unit 1101 sends the received data to the MIDI bus, controls each musical instrument, and outputs the sound of the specified part.

When a manual performance of playing a musical instrument by himself is specified, the reception control unit 114 sets the decoding unit 110 so as not to output sound for the specified part.
To end the process.

As described above, according to this operation example, it is possible to play with the electronic musical instrument owned by the user in accordance with the transmitted performance.

The present embodiment can be applied not only to the broadcasting format but also to one-to-one image communication such as a videophone.

In the present embodiment, each broadcast channel has been described as a physical channel having a different broadcast frequency.
However, the present method can also be applied when each broadcast channel is a logical channel. That is, when all the program channels and the control channel are multiplexed on one physical channel by time division multiplexing or the like, the position of the control channel and the position of each control information in the control channel are fixed, and the selection is made. Control information corresponding to the assigned channel,
What is necessary is just to specify the position of the selected program channel and the broadcast content information in the program channel.

[0113]

As described above, according to the present invention, in order to enable a variety of services to be provided to the viewer, the flexibility of the compression method, the multiplexing method, the selectivity of the viewer's video, etc. The television broadcasting system provided with the above can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a television broadcasting system according to one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a state of a broadcast channel used in an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a first operation example of the television broadcasting system according to one embodiment of the present invention.

FIG. 4 is an explanatory diagram showing control information used in one embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the reception control unit in the first operation example.

FIG. 6 is a flowchart showing the operation of the reception control unit in the first operation example.

FIG. 7 is a flowchart showing the operation of the reception control unit in the second operation example.

FIG. 8 is a flowchart showing the operation of the reception control unit in the second operation example.

FIG. 9 is a flowchart showing the operation of the reception control unit in the second operation example.

FIG. 10 is an explanatory diagram showing a menu displayed on a display unit in a second operation example.

FIG. 11 is a block diagram showing a configuration of a receiving side system in a third operation example.

FIG. 12 is an explanatory diagram showing a menu displayed on a display unit in a third operation example.

[Explanation of symbols]

 Reference Signs List 101 transmitting device 102 receiving device 103 input device 104 signal combining / encoding unit 105 transmitting unit 106 program storing unit 107 transmission controlling unit 108 receiving unit 109 signal separating unit 109 110 decoding unit 111 display unit 112 received signal storing unit 113 user operation input Unit 114 reception control unit

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Masayasu Futagawa 4026 Kuji-cho, Hitachi-city, Ibaraki Pref. Hitachi Research Laboratory, Inc. (72) Inventor Shinya Yatani 4026 Kuji-cho, Hitachi-shi, Ibaraki Hitachi, Ltd. Within Hitachi Research Laboratory (72) Inventor Atsushi Kawabata 4026 Kuji-cho, Hitachi City, Ibaraki Prefecture Within Hitachi Research Laboratory, Hitachi, Ltd. (72) Inventor Norihito Watanabe 4026, Kuji-cho, Hitachi City, Ibaraki Prefecture, Hitachi Research Laboratory, Hitachi Ltd. (72) Inventor Kazunari Maeda 4-15-15 Honcho, Higashi-ku, Osaka City, Osaka, Japan Kansai Branch of Hitachi, Ltd.

Claims (2)

[Claims] A receiving unit that receives a digital broadcast signal obtained by multiplexing control information including video information of a plurality of programs and program names of the plurality of programs; and a program of the plurality of programs based on the control information. A processing unit that causes a display device to display an interactive screen including a name, and separates video information corresponding to the program selected by the interactive screen from the video information received by the receiving unit; and A television broadcast signal receiving device, comprising: a video information recording unit for recording. 2. A receiving section for receiving a digital broadcast signal obtained by multiplexing control information including video information of a plurality of programs and program names of the plurality of programs, and recording for recording the digital broadcast signal received by the receiving section. Unit, based on the control information recorded in the recording unit, display an interactive screen including the program name of the plurality of programs on a display device, the video information corresponding to the program selected by the interactive screen, A television broadcast signal receiving apparatus comprising: a processing unit that extracts from a recording unit and reproduces the television broadcast signal.