JPH09233439A - Receiver for television broadcasting multiplexed with data broadcasting program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiver for television broadcasting multipled with data broadcasting program by which plural data broadcasting programs to be transmitted while being multiplexed onto television broadcasting signals are received by using one decoder. SOLUTION: A display 11 enables display while dividing it into two left and right areas ch1 and ch2, and two programs can be received at the same time. Received signals from two tuners 131 and 132 are supplied to a switch circuit 16 together with video processing circuits 141 and 142 and inputted from this switch circuit 16 to a decoder 17 and after the sampling error of data part is corrected at the decoder 17, data are recognized as script. The decoder 17 is provided for recognizing the partition of the script and applying a switching command to the switch circuit 16, and the data program of character information is displayed on the respective left and right areas of the display 11 together with images while being mixed with video signals from the video processing circuits 141 and 142 at a mixer circuit 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data broadcast program which receives and reproduces a data broadcast multiplexed with a television broadcast signal and which has a function expanded by utilizing this data broadcast. The present invention relates to a receiving device for multiplexed television broadcasting.

[0002]

2. Description of the Related Art For ordinary television broadcast signals,
Character broadcasting has been realized in which character data and graphic data are multiplexed and transmitted. To receive such teletext,
A receiver for receiving ordinary television broadcasting and a decoder built in or external to this receiver (adapter) are required. In this case, the signals detected by the tuner built in the television receiver or the tuner of the external adapter are once taken in by the respective decoders, and the decoded signals are returned to the television receiver and displayed on the screen. Therefore, a pair of decoders is required for one television receiver.

An interactive character multiplex program is known, which is a further development of such character broadcasting. This interactive character-multiplexed program transmits computer program data from the broadcasting station side in the character-multiplexed broadcast program, and the receiving side is provided with an execution means of this computer program, when the viewer inputs operation of the controller. In addition, the execution means of this computer program automatically dials the telephone via the communication control means.
Then, the input data corresponding to the viewer's operation is automatically transmitted to the broadcasting station side. However, even in such a device, a decoder is required for each broadcast program.

As a television receiver, recently, a multi-screen television has been developed in which one display screen is divided into a plurality of areas and the plurality of divided areas are used to display the plurality of screens. In such a multi-screen television, a tuner is usually provided with a plurality of tuners.
Multiple programs can be displayed at the same time. In this case, in order to receive a teletext program, there is one program per decoder, and for example, in order to receive two teletext programs at the same time, the display screen is divided into two areas on the left and right. Two decoders are needed.

FIG. 5 shows a conventional example of the configuration of a receiver for receiving a character multiplex broadcast program on the other hand using a display having two left and right screens, and shows a television broadcast radio wave received by an antenna 51. Is input to the first and second tuners 52 and 53, and the television broadcast radio wave of the program desired by the viewer is received. The television broadcast signals received by the tuners 52 and 53 are supplied to the first and second video processing circuits 54 and 55, and the video signals output from these video processing circuits 54 and 55 are mixed. It is supplied to the circuit 56.

Here, the character multiplex broadcasting program is received by the first tuner 52, and the multiplexed data (script) is input to the decoder 57, and the decoder 57 decodes the multiplexed character data and the like. And supplies it to the mixing circuit 56 together with the video signal from the first video processing circuit 54.

The output from the mixing circuit 56 is displayed on the display 58. In this case, the display 58 is composed of, for example, a wide screen having an aspect ratio of 16: 9, and is appropriately divided into right and left regions so that the first and second channels (ch1, ch2) can be simultaneously image-received and displayed. The image from the image processing circuit 54 is displayed on the first channel ch1 and ch1 is displayed on this first channel.
Then, the character data from the decoder 57 is displayed together with the video signal based on the video signal from the video processing circuit 54. Then, the video processed by the second video processing circuit 55 is displayed on the second channel ch2.

Here, a controller 59 for the viewer to input based on the displayed video is provided. For example, the answer of the questionnaire program broadcast on the first channel is input from this controller, and the decoder 57 is used. Is supplied to. Then, the answer inputted from the decoder 57 is sent to the modem 60 according to the computer program, sent out to the telephone line and transmitted to the broadcasting station or the like.

Further, it has been conventionally considered that the teletext is received by a plurality of tuners, and the teletext data multiplexed with the video signal received by each of the tuners is stored in each memory. ing. However, it cannot be associated with the television broadcast program currently being viewed by the user, and the interactive operation of the two-way communication cannot be performed as it is. Moreover,
In character multiplex broadcasting, it takes about 20 seconds to transmit data. Therefore, even if processing is performed in time division, it is considerably large to capture all data without dropping. It was impossible to implement it because of the long waiting time.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is contained in a television broadcast signal and is multiplexed and transmitted in a data channel independent of video and audio signals. Incoming data broadcast programs can be received, a plurality of data broadcast programs included in a plurality of television broadcast signals can be processed by one decoder, An object of the present invention is to provide a television broadcast receiving apparatus in which data broadcast programs are multiplexed so that they can be associated and executed.

[0011]

A television broadcast receiving apparatus in which a data broadcast program is multiplexed according to the present invention includes a data channel which is included in each television broadcast signal and is independent of a video signal and an audio signal. A device for receiving a data broadcast program for receiving and processing a plurality of multiplexed data broadcast programs, wherein each of the plurality of data broadcast programs is received by a plurality of receiving means, and one of the received television signals is a switch. It is selected by the means and input to the decoder. This decoder decodes a data broadcast program multiplexed with an input television signal and extracts one of the scripts, which is the data, and each of the video signals of the television broadcast signal received by the receiving means, The decoded execution result of the script is mixed in correspondence with the original television signal, and the script corresponding to each video signal is displayed. Then, the decoder is notified which one of the displayed images is selected. Here, the decoding means has a plurality of storage means for storing a script which is each data of the received data broadcasting program, and the scripts stored in each of the storage means are sequentially selected and read out to determine a predetermined display means. Is displayed in the area.

That is, the receiving means is provided corresponding to each of the plurality of screens that can be displayed on the display means, the plurality of television broadcast signals are received in parallel, and the video portions of the plurality of received signals are displayed. Each is displayed in the display part of the divided area of the means. Further, the signals received by each of the plurality of receiving means are sequentially selected by the switch means, and the scripts supplied to the decoding means and multiplexed respectively are stored in the plurality of storage means, respectively, and mixed with the corresponding video signals. Supplied to the display means,
It is displayed in a predetermined display area together with the corresponding image. In this case, the switch means is switched in response to the detection of the end of the data or the passage of a fixed time, and all the data can be fetched in parallel without being missed.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. A data broadcast program that is included in a television broadcast signal and that is transmitted by being multiplexed on a data channel that is independent of the video and audio signals does not receive the program from the beginning, but a viewer who receives it from the middle. It is necessary to deal with. Therefore, the script, which is data, is repeatedly transmitted, and the interval of this repetition is about 5 seconds. further,
This repetition of about 5 seconds is repeated in a certain period. Therefore, if the viewer receives any one of the repeated scripts, the contents of the script can be executed, and the purpose of teletext is achieved.

FIG. 1 shows the configuration of a television broadcast receiving apparatus in which data broadcast programs are multiplexed according to the first embodiment. In this embodiment, the display display 11
Is, for example, a 16: 9 wide screen, and is divided into two left and right areas at the center so that two broadcast programs of the first channel ch1 and the second channel ch2 can be received in parallel. Is shown.

That is, television broadcast radio waves are transmitted via the antenna 12 to the first and second tuners 131 and 132.
These tuners 131 and
The television signals received at 132 are input to the first and second video processing circuits 141 and 142, respectively. The video signals respectively processed by the video processing circuits 141 and 142 are supplied to the mixing circuit 15,
It is displayed in each of the left and right divided areas of the display 11.

First and second tuners 131 and 132
The received signal from is supplied to the switch circuit 16 as signals a and b. Then, the signal selected by the switch circuit 16 is supplied to the decoder 17, and after the decoder 17 corrects the error of extracting the data portion, it is recognized as a script.

When the decoder 17 recognizes a script break, a command is given to the switch circuit 16 based on the recognition result to switch the input signals a and b. That is, if the switch circuit 16 inputs the signal a from the first tuner 131 and the script break of this signal is recognized, the switch circuit 16 is switched to select the input b, and the second The signal from the tuner 132 is selected, and the error correction is performed by extracting the data portion.

Then, the decoder 17 executes the script obtained by decoding the switched signal and recognizes it as the second script. When the decoder 17 recognizes the break of the second script, the switch circuit 16 informs that fact.
Then, the signal is switched so that the signal from the first tuner 131 is input again.

The output from the decoder 17 is supplied to the mixing circuit 15 together with the output video signals from the first and second video processing circuits 141 and 142, respectively. That is, for the output video signal from the first video processing circuit 141 to which the signal from the first tuner 131 is supplied, when the signal from the first tuner 131 is selected by the switch circuit 16. Second tuner mixed with output from decoder 17
For the output video signal from the second video processing circuit 142 to which the signal from the 132 is supplied, the decoder when the signal from the second tuner 132 is selected by the switch circuit 16
Mixed with output from 17.

This television receiver is provided with a remote control controller 18 operated by a viewer for two-way communication, and an operation signal from the controller 18 is a signal which acts on the first tuner 131 system. A signal for identifying whether it is a signal that acts on the second tuner 132 system is transmitted to the decoder 17,
In step 17, after identifying which program the program corresponds to, the program is executed according to the script. The two decoded scripts are respectively stored in the memory and are time-divisionally processed by the instruction from the CPU. Tecorder
17 is connected to a modem 19 connected to a telephone line.

That is, by such an operation, one decoder 17 can support a plurality of data broadcasts, and the data broadcasts can be simultaneously displayed on the screen of a television having a plurality of screens. Therefore, the service in the two-way communication can be surely used for the selected data broadcast.

FIG. 2 shows an example of a concrete configuration of the decoder 17. The video signal output from the TV (television) interface 21 is converted into a digital signal in the A / D converter 22 and synchronized. The sync signal is separated and extracted in the separation circuit 23. The digital video signal from the A / D converter 22 is supplied to a waveform equalization unit 24 which is controlled based on the separated sync signal, and the output from the waveform equalization unit 24 is supplied to a data acquisition error correction unit 25. To be done. The data output from the data fetch error correction unit 25 is coupled to the data bus 27 connected to the CPU 26.

A program ROM 28 for controlling the CPU 26 and a character font ROM 29 are coupled to the data bus 27, and a modem 19 connected to a telephone line via a line connection circuit 30 is connected to the data bus 27. Work R
The AM 31 and the program RAM 32 are connected, and the non-volatile memory 33 is also connected.

The data bus 27 stores the data (script) from the first and second tuners 131 and 132 which are selected by the switch circuit 16 to be stored therein.
Memory 341 and 342 of the
This is processed in a time division manner by a command from U26.

The display synchronizing signal from the TV interface 21 is supplied to the display control unit 35 connected to the data bus 27, and the display data transmitted through the data bus 27 is stored in the display memory 36. Then, the display data stored in the color map memory 37 is supplied and sent to the TV interface 21 via the D / A converter 38 to display 11
To be displayed. Further, the operation signal from the controller 18 is supplied to the operation input I / F 39. The operation input I / F 39 is connected to the data bus 27.

Here, in the device thus constructed, assuming that the first broadcast is relayed on the first channel, for example, the two-screen television display 11
, For example, it is assumed that the user is watching the first channel ch1 on the left side. At the same time, it is assumed that the quiz program which is the second broadcast is broadcast on the second channel and is being viewed on the screen of the second channel ch2 on the right side of the display 11. At this time, the two-way communication program is
It is assumed that the programs are being performed on both the programs on the second channel and the second channel.

In such a situation, the decoder 17 is the first
Assuming that the switch circuit 16 is set to receive the signal of the first channel from the tuner 131, the decoder 17 decodes the data contained in the signal of the first channel.

When the decoder 17 detects the end of data,
The switch circuit 16 is so arranged that the decoder 17 receives the signal from the second tuner 132 corresponding to the second channel.
Is switched to the b side. In this state, the decoder 17 decodes the signal included in the second signal, and when detecting the end of the data, the switch circuit 16 is switched to the a side again, and the first
The signal from the tuner 131 is selected and input to the decoder 17. Such work is repeated until the bidirectional communication program is completed.

Further, it is assumed that a bidirectional communication program is broadcast only on one channel,
In such a case, if the data is received for a certain period, the switch circuit 16 is switched even if the end of the data is not detected. Further, even when the two-way communication program is not broadcast on both channels, similarly, a command is given to the switch circuit 16 with a lapse of a certain period to perform the switching operation. By doing so, even if the bi-directional communication program starts at any time, it can be instantly dealt with.

Specifically, assuming that a questionnaire survey is being conducted, such as a viewer poll for a baseball MVP (MVP) on the first channel, for example, the viewer operates the controller 18 and the decoder operates. Work on 17 decoder
17 sends the voting data to the server company using the telephone line. The server company aggregates the sent data and sends it to the broadcasting station, and the broadcasting station broadcasts the result.

At this time, it is assumed that another interactive service such as a quiz for viewer participation is being performed on the second channel. The viewer operates the controller 18 to work on the decoder 17, and the decoder 17 uses the telephone line to send the answer to the server company. Then, in the server company, the answer data is totaled, the correct answer rate, etc. are calculated and sent to the broadcasting station, and the broadcasting station broadcasts the result.

In this way, when the two-way communication program is received by both the first and second channels,
The operation corresponding to the desired program must be surely performed. In such a case, an input operation of which program is to be selected first is performed in the input device by the controller 18, and this input is first sent to the decoder 17. The decoder 17 executes the script corresponding to the signal.

In this way, even when two programs on the first and second channels are performing interactive services at substantially the same time (questionnaire survey, etc.), one program can be used for both programs by one decoder 17. You can participate.

FIG. 3 shows another example of the decoder 17. In this example, the configuration of the decoder 17 capable of particularly detecting a character multiplex program of different channels and bidirectional character broadcasting is shown. The signals are paralleled in the first and second A /
It is supplied to the D converters 221 and 222, and two systems of sync separation circuits 231 and 232 are provided. For the data read error correction unit 25, two systems of buffer RAM 401 and
402 is provided. In this case, the waveform equalization unit 24 and the data acquisition error correction unit 25 are used in a time division manner, and the microcomputer also processes by one CPU 26. Normally, it can be used for bidirectional teletext detection on the main channel while accumulating teletext programs on subchannels.

FIG. 4 shows an embodiment using a display capable of being divided into three or more, for example, k regions.
The received signal from the antenna 12 is k tuners 131, 132.
, ..., 13k, and received signals from the tuners 131 to 13k are received by the first to kth video processing circuits 14 respectively.
, 14k are supplied to the switch circuit 16. The output from the decoder 17 is supplied to the switch circuit 41 that is switched in synchronism with the switch circuit 16 and mixed with the video signals from the video processing circuits 141 to 14k in the mixing circuit 15 to display K pieces of the display 11. Each screen is divided into two parts.

[0036]

As described above, according to the television broadcast receiving apparatus in which the data broadcast programs according to the present invention are multiplexed, a plurality of data broadcast programs can be simultaneously viewed by using one decoder. Even in a system such as a multi-screen television receiver, a single signal extraction circuit, an error correction circuit, etc. can be provided, and the circuit configuration of the teletext decoder can be simplified and can be constructed at a sufficiently low cost. .

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram for explaining a first embodiment of a television broadcast receiving apparatus in which a data broadcast program is multiplexed according to an embodiment of the present invention.

FIG. 2 is a circuit configuration diagram illustrating a specific configuration example of a decoder unit used in the above device.

FIG. 3 is a circuit configuration diagram illustrating another example of the decoder unit.

FIG. 4 is a circuit configuration diagram for explaining a second embodiment of a two-way communication device using television broadcasting.

FIG. 5 is a circuit configuration diagram illustrating a conventional two-way communication device using television broadcasting.

[Explanation of symbols]

11 ... Display, 12 ... Antenna, 131-13k ... Tuner, 141-14k ... Image processing circuit, 15 ... Mixing circuit, 16, 41
… Switch circuit, 17… Decoder, 18… Controller, 19
… Modem, 21… TV interface, 22, 221, 22
2 ... A / D converter, 23, 231, 232 ... Sync separation circuit, 24
... Waveform equalization unit, 25 ... Data acquisition error correction unit, 26 ... C
PU, 27 ... Data bus, 28 ... Program ROM, 29 ... Character font ROM, 30 ... Line connection circuit, 31 ... Work RA
M, 32 ... Program RAM, 33 ... Non-volatile memory, 341, 342
... memory, 35 ... display control circuit, 36 ... display memory, 37 ... color map memory, 38 ... D / A converter, 39, operation input I
/ F, 401, 402 ... Buffer memory.

Claims (5)

[Claims] 1. An apparatus for receiving and processing a plurality of data broadcast programs, each of which is included in a television broadcast signal and multiplexed in a data channel independent of a video signal and an audio signal, A plurality of receiving means for receiving, a switch means for selecting one of the television signals respectively received by the plurality of receiving means, the television signal selected by the switch means is supplied, and the television signal is supplied. Decoding means for taking out a script which is the data of the data broadcasting program multiplexed on the video signal, each of the video signals of the television broadcasting signals respectively received by the plurality of receiving means, and the execution result of the script output from the decoder Mixing means for mixing and corresponding to the original television signal Display means for displaying a video corresponding to each video signal of the television broadcast signal from the mixing means, and a plurality of display areas for displaying the script corresponding to the displayed video signal, Means for informing the decoder which one of the images displayed on the display means is selected, the decoding means storing a plurality of storages each storing a script which is data of each of the received data broadcast programs. Means for sequentially selecting and reading out the scripts stored in each of the storage means, and displaying the scripts in a predetermined area of the display means. Receiver. 2. The display means is set with the receiving means respectively corresponding to a plurality of divided display areas, and the decoding means is set with the storage means corresponding to each of the plurality of display areas. A receiving device for television broadcasting in which the data broadcasting program according to claim 1 is multiplexed. 3. The display means can be divided into left and right display areas into first and second display areas, and first and second display means for receiving first and second television broadcast signals.
Receiving means, switch means for selecting one of the received signals from each of the first and second receiving means, and decoding means for supplying the received signal selected by the switch means. So that the script of the data broadcast program multiplexed with the received signal decoded by the means is displayed correspondingly with the video signals respectively received by the first and second receiving means in the left and right areas of the display means. 2. A receiving apparatus for television broadcasting in which the data broadcasting program according to claim 1 is multiplexed. 4. The data broadcasting program according to claim 1, wherein the decoding means detects the end of the data, and the switch means is switched based on the detection result. Receiver for television broadcasting. 5. The decoder according to claim 1, wherein the decoding means detects a lapse of a fixed time, and the switch means is switched based on a detection result of the lapse of the fixed time. Receiver for television broadcasting in which data broadcasting programs are multiplexed.