JPH0993549A - Teletext multiplex decoder built-in type multi-screen display television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the utilizing efficiency of an image memory and a companding circuit considerably especially by providing a control means storing image data demodulated by a data broadcast reception and demodulation means and reading and displaying the stored content depending on an operation command. SOLUTION: A TV signal received by a tuner 121 is given to a selector 123, and a video signal is compressed by an image processing section 124. Thus, an image memory and a memory control circuit are integrated in the image processing section 124. Thus, a remote operation device 150 is operated to store teletext multiplex broadcast data or data of a supplement program tentatively via a system controller 151. That is, in the program search function or the program menu generating function, a reception channel of the tuner 121 is selected one after another by remote control and each pattern of the selected channel is compressed and stored in the image memory sequentially and plural image patterns are displayed on the same screen by reading the image memory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-screen display television receiver with a built-in character multiplex decoder, and more specifically, it can effectively utilize a data broadcast signal included in a television broadcast signal. It has improved utility value.

[0002]

2. Description of the Related Art A character broadcasting program has been realized in which character or graphic data is multiplexed and transmitted with an ordinary television broadcasting signal. Currently available teletext programs include news, weather forecasts, traffic information, tourist information, and TV shopping. In addition, there is a case where a questionnaire survey is performed to a viewer in a program.

By the way, the current teletext program is a system in which information is unilaterally provided to a viewer from a television station. For example, in the case of TV shopping, when a shopping information program is broadcast by teletext, the viewer makes a memo of the desired product number or mail order company's telephone number while watching the characters displayed on the screen, and sees the memo. While making phone calls using a telephone, he will place orders and orders. Also, in the case of conducting a questionnaire survey to the viewer in the program, the viewer takes notes such as a telephone number for responding, and responds using the telephone while looking at the memo. In such a case, a problem such as a wrong telephone call due to a wrong dial or a wrong telephone call when a telephone number is erroneously written down occurs.

As described above, in the conventional character multiplex broadcast program, a one-way broadcast from a television station is performed, and the response is long because the system waits for a telephone call from the viewer. In addition, there is a problem that many wrong calls are generated.

In order to solve such a problem, therefore, a program executing means for transmitting computer program data from a broadcasting station side in a character multiplex broadcasting program and executing the computer program is provided in a receiver.
It has been proposed that the program executing means dials the telephone automatically through the communication control means when the viewer gives an operation input and automatically transmits the input data of the viewer. ing. This way,
The number of false calls is reduced, and the response time to the collection station is near real time. Hereinafter, a program that sends a computer program as described above or sends supplementary data that supplementarily describes a main broadcast program is called a complementary program, and a computer program is called a script.

By the way, most of the circuit blocks for receiving and processing the complementary programs can be shared with the circuit blocks for receiving and processing the character multiplex broadcasting program. Therefore, when designing a receiving device,
The hardware can be reduced in size by using a circuit configuration that can be used by switching the processing mode of the complementary program.

Further, recent television receivers are provided with a multi-screen display function, which uses an image memory. In addition, recent television receivers may have a function capable of simultaneously receiving two channels and simultaneously displaying them on the screen. However, these functions are insufficient in terms of utilization efficiency because they are exclusively used for the purpose for which they were originally provided.

[0008]

As described above, in recent television receivers, circuits for internally performing image processing are often provided for their own purposes, which is insufficient in terms of utilization efficiency. Is.

In view of the above, according to the present invention, the utilization efficiency of the image memory and the compression / decompression circuit is remarkably improved, and a built-in character multiplex decoder is provided which can be used to expand the utilization of the complementary program. An object of the present invention is to provide a multi-screen display television receiver.

[0010]

According to the present invention, there is provided a receiving means capable of receiving a television broadcast signal, a video signal processing means for displaying a video signal which is a received signal of the receiving means on a display means, and the receiving means. Data that receives and demodulates data broadcasts that are transmitted by being multiplexed on a data channel that is included in the received television broadcast signal and is independent of the video and audio signals by switching the reception channels one after another. Broadcast reception and demodulation means, storage means for storing the image data demodulated by the data broadcast reception and demodulation means, and control means for reading the contents of the storage means according to an operation command and displaying the contents on the display means. To do.

The present invention further includes a receiving means including the first and second tuners, capable of simultaneously receiving a two-channel television broadcast signal, a display means for displaying a video signal, and a receiving means for receiving the first tuner. A video signal processing means for displaying a video signal, which is a signal, on one of the left and right split screens of the display means, and a television broadcast signal received by the first tuner, which is independent of the video / audio signal. A data broadcast receiving and demodulating means for receiving and demodulating a data broadcast multiplexed and transmitted in a data channel, and a storage means for storing the image data demodulated by the data broadcast receiving and demodulating means A display control means for reading the contents of the storage means according to an operation command and displaying the contents on the other of the left and right split screens of the display means. That.

By the above means, the use range of the image memory can be expanded and effective use can be achieved, and the utility value of the television receiver can be increased for the character multiplex broadcasting and the data broadcasting.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a system to which a two-way communication device using television broadcasting, which is an embodiment of the present invention, is applied. This system, by utilizing the current character multiplex broadcasting function and telephone communication function, adds a telephone communication function to one-way broadcasting of television broadcasting and expands an upstream data transmission function, The two-way communication function is realized as a whole. This system basically extends the existing teletext system by software. Therefore, even if you add a script to the character multiplex broadcast and broadcast it,
It has no effect on current TV broadcasts, teletexts, and TV receivers.

The overall system is composed of a network including a TV receiver 11, a broadcasting station 12, a telephone network 13, and a collecting station 14. The broadcasting station 12 uses a teletext channel to broadcast a script, which is a computer program for realizing bidirectionality, in a complementary program in synchronization with a normal television program. Alternatively, it is repeatedly broadcast as an independent broadcast within a predetermined broadcast time.
This script is a kind of application program that describes the progress procedure of the two-way communication system.
The V broadcast signal is superimposed and transmitted during the vertical blanking period.

The script is a T that receives a TV broadcast signal.
It is stored in the memory of the V receiver 11 and is executed by, for example, a program execution device (script decoder) incorporated in the TV receiver 11. This script decoder displays a symbol mark indicating that the current program is a complementary program, for example, "i", notifies the viewer of it, and starts script execution in response to an operation input from the viewer. , Respond such as display of program supplement data.

This symbol mark (complementary program mark) display means uses a method unique to this system, and the display means and display form will be described later. The response by the viewer may end in the TV receiver 11 by itself, but the result of the response may be sent to the computer system (collection station 14) provided in various places in the telephone network 13.
It is also possible to send the data via the Internet and to reflect it in real time on the program content provided by the broadcasting station 12. It is also possible to take in data from the collection station 14 side via the telephone network 13.

The TV receiver 11 is equipped with a script decoder and a modem in order to realize a bidirectional function, in addition to a normal TV broadcast receiving circuit including a character multiplex decoder. The script decoder extracts a script from a TV broadcast signal transmitted from the broadcast station 12 and executes the script to realize two-way communication. When the viewer responds to send the upstream data, the viewer responds by using the remote controller for TV operation. When data is transmitted to the collection station 14, automatic dialing is performed by a modem connected to the TV receiver 11, and connection is made to the collection station 14. The uplink data may be transmitted immediately or may be transmitted after waiting at night or the like.

Since the modem added to the TV receiver 11 has a function of automatically dialing, it is not necessary for the viewer to dial for upstream data transmission.
The telephone number for automatic dialing is broadcast station 1 for each complementary program.
It is embedded in the script from the 2 side and sent. This telephone number may be one or plural, and in the case of plural telephone numbers, the viewer can select the destination.

The script decoder is realized by a processor that executes a computer program. However, since the character multiplex decoder also usually has a built-in processor, the script decoder is actually realized by expanding the function of the character multiplex decoder in software. Therefore, the script decoder includes a character multiplex decoder and a program ROM, and shares many circuits with the character multiplex decoder.

When broadcasting a program of a viewer participation system in which the response of the viewer is reflected in the program, the broadcasting station 12 adds the supplementary program data including the script to the broadcast signal including the normal video / audio. Insert and send. A program production system for generating and inserting data of a complementary program including a script can be composed of a personal computer and a multiplexer.

The broadcasting station 12 broadcasts by inserting a supplementary program into the broadcast wave in addition to a normal program. The computer programs to be added are roughly classified into those produced by the broadcasting station itself and those produced and provided by third parties such as advertising companies and mail order companies. Furthermore, there are those produced by broadcasting stations that can be prepared in advance, and those that are inserted live, such as when broadcasting sports.

Here, the structure of the script will be described. The script is created by the production system of the broadcasting station 12, and is sent together with normal images and sounds. The script is realized as a set of objects as follows.

(1) Background / display material (2) Operation button (3) Character string (4) Image etc. Each object can have a complementary procedure (procedure), and this procedure is an extended BASIC language. Described by etc. This language is a normal BASIC language with control instructions for two-way communication.

When the script is executed, first, screen backgrounds and screen constituent elements such as operation buttons are displayed. When the viewer selects the operation button, a program corresponding to the button is activated.

A method of processing response data is registered in the collection station 14 in advance, and the collected content can be redistributed to a broadcasting station, an advertising company, a sponsor, a mail order company, etc. in accordance with the method.

The forms of interactive programs that can be realized by this interactive communication system can be roughly classified into the following three types. (1) Complementary data program-Selective display of additional information about advertising products.

Data for live broadcasting of sports is selectively displayed.・ Display the program contents.・ Memorize the cooking resapies and display them later.

Respond to answers to questions in early childhood education programs.・ Respond to viewers' answers in quiz programs. (2) Response feedback program (use the collecting station) -Take questionnaires on politics, economics, and social reporting.

[Collect questionnaires for sports programs.・ Display stats of correct respondents and tournaments in viewer participation quiz programs. (3) Program with transaction (use collection station) -Orders will be accepted at the server (collection station) through TV shopping.

A server (collection station) accepts a catalog request or the like in an advertisement with a request such as information. -For audience rating survey, send the viewing program data to the server (collection station) with the consent of the viewer.

FIGS. 2A and 2B show a period in which teletext data is transmitted in a TV teletext broadcast signal of the hybrid transmission system. That is, the teletext data is the 14th H (277H) to the 16th H (279H), and the 21th H (284H) in the vertical blanking period.
Is superimposed on. In this vertical blanking period, there is a margin for further multiplexing of data, so for example, the 10th H (second
73H) to 13th H (276H) can be multiplexed and transmitted. Although the script may be multiplexed at a position different from the current character multiplex position in this way, it may be time-divisionally transmitted to the same position as the current character multiplex signal. Also, teletext data can be transmitted on one sub-channel of the audio multiplex signal, and in this case, the data from the FM receiving unit is taken in.

FIG. 3 shows in more detail an example of the structure of a data packet in one line period transmitted in the character multiplex broadcast and the data broadcast. A bit synchronization code and a byte synchronization code are arranged before the data packet. The data packet section includes a prefix, a data block, and a check code. Further, the prefix part includes a service identification code and a packet control code. This service identification code can be used to identify the arrival of the complementary program signal.

FIG. 4 shows a specific circuit configuration of a bidirectional communication device provided in the TV receiver 11, a decoder including a character multiplex broadcast decoder and a script decoder, that is, a character multiplex and data broadcast decoder. .

The video signal of the reception channel is input terminal 21.
It is supplied to the sync separation unit 22 and the A / D converter 23 via. In the vertical blanking period of the video signal, data for bidirectional digital communication is multiplexed as described in FIG.
The data digitized by the A / D converter 23 is waveform-equalized by the waveform equalization unit 24 and the data acquisition / error correction unit 2
5 is introduced. The waveform equalizer 24 compensates for deterioration of the video signal converted into a digital signal during transmission.
Separates the digital broadcast signal multiplexed with the video signal,
The multiplexed data and clock in it are output. The data fetching / error correcting unit 25 fetches the multiplexed data in units of 8 bits in the buffer RAM 26 in synchronization with the clock and performs error correction.

The CPU 27 operates based on the fixed program stored in the program ROM 28. Character font RO
A character font for displaying characters is stored in M29, and corresponding character data can be read out by addressing a desired character to the ROM 29.

A synchronizing signal for display synchronized with the TV receiver is introduced to the input terminal 30 and supplied to the display control section 31. The display control unit 31 performs a process of reading the data in the display memory 32 in synchronism with the reproduction of the television image and writing the display data to the display memory 32 in response to a write command from the CPU 27. Display memory 3
The data read from No. 2 is stored in the color map memory 33.
Is supplied as an address input, and each level data of the primary color signals RGB corresponding to the address is output. This level data is converted into an analog RGB signal by the D / A converter 34 and is derived from the output terminal as a display signal. It should be noted that this display signal is displayed on the display as a television image signal in which graphics are superimposed by synthesizing the television image signal by a synthesizing means (not shown). Further, the D / A converter 34 is
Omitted depending on the interface on the display side,
The RGB signals themselves may be output.

From the input terminal 36, the operation signal by the viewer from the remote control operation unit is input. This operation signal is sent to the CPU via the operation input interface (I / F) 37.
It is taken in 27 and analyzed.

38 is a modulator and demodulator (modem),
It constitutes a communication control unit and is connected to the telephone line via the line connection unit 39. The line connection unit 39 connects the line,
It controls disconnection and is controlled by the CPU 27.

The CPU 27 is connected to each functional block, that is, the data fetching / error correcting unit 25, the program ROM 28, the character font ROM 29, the operation input I / F 37, the display control unit 31, the modem 38, etc. via a bus line. . Further, a work RAM 41, a program RAM 42, and a non-volatile memory 43 are connected to the bus line.

The program RAM 42 is a memory for storing a computer program transmitted from a broadcasting station,
According to the viewer's operation, the contents of this computer program can be interpreted and the procedure of this computer program (script) can be executed according to the interpreter in the fixed program stored in the ROM 28. The non-volatile memory 43 stores a unique identification number (ID) of this receiving terminal (decoder), and this unique identification number is used when transmitting order data to the collecting station 14 in, for example, TV shopping. To be done. The collection station 14 determines the orderer by recognizing the ID.

The above circuit configuration is also used when processing a character multiplex broadcast program. That is, when the reception of the character multiplex broadcast program is instructed by the remote control operation, the CPU 27 is switched to be under the control of the character multiplex broadcast program processing program stored in the program ROM 28. Then, the character data sent is the character font R
It is converted into display data by the OM 29 and stored in the display memory 32 via the display control unit 31.

FIG. 5 shows the structure of a television receiver showing an embodiment of the present invention. The television signal received by the tuner 121 is input to the video processing circuit 122 and subjected to processing such as detection and gamma correction, and the selector 1
23 is input. The video signal that has passed through the selector 123 can also be subjected to compression processing by the screen processing unit 124. When the compression processing is not performed, the data is directly passed to be input to the synthesis circuit 131 and supplied to the display unit 132.
The video signal in the video processing circuit 122 is input to the character multiplex and data broadcast decoder 141. The configuration of this decoder 141 is as described in FIG. Here, in normal operation, the character multiplex and data broadcast decoder 14
The output of 1 is supplied to the synthesizing circuit 131 in the character multiplex broadcast processing mode or the data broadcast processing mode, and character display or supplementary data display can be obtained.

By the way, it is possible to operate the remote controller 150 to temporarily store the character multiplex broadcast data and the complementary program data via the system controller 151. For this function, for example, a program search function and a program menu display function are effectively used.

That is, in the program search function and the program menu creation function, the reception channels of the tuner 121 are switched one after another by the remote control operation, and each of the channels 1
The screens are successively compressed and stored in the image memory, for example, 9 screens are stored, and when the image memory is read, for example, 9 screens are displayed on the same screen. The nine screens are changed one after another in response to channel switching.

For this reason, the screen processing unit 124 has an image memory and its memory control circuit incorporated therein. now,
It is assumed that the system is set to character multiplex and supplemental data acquisition mode. Then, as shown in FIG. 6A, it is assumed that the weather forecast, the golf course map, the golf player profile, and the score ranking are transmitted as character multiplex and supplementary data. Then, FIG. 6 (b)-
As shown in (e), image memories M1, M2, M3, M4
Includes the timing pulse T shown in FIGS.
The weather forecast, golf course map, golf player profile, and score ranking data are stored at the timings of 1, T2, T3, and T4. This timing pulse may be generated by the viewer himself operating the remote control, or may be automatically generated when the content of the character multiplex and supplementary data is changed. In this example, four image memories are prepared, and four screens are stored. In this saving process, the selector 123 is controlled so as to select the output of the character multiplex and data broadcast decoder 141.

As described above, the weather forecast, golf course map,
After capturing the golf player profile and score ranking data, if the user wants to see the contents, a stored data confirmation operation is performed by operating the remote controller.

FIGS. 7A to 7D show an example in which characters and figures in each memory are read out and displayed when confirming the stored data. In the above-mentioned form, when the tuner is one television receiver and has a plurality of image memories,
This is an example of utilizing this image memory, but in the case of a television receiver having a plurality of tuners, more effective utilization is possible.

FIG. 8 shows still another embodiment. The same components as those of the television receiver shown in FIG. 4 are designated by the same reference numerals. In this television receiver, the television signal received by the tuner 111 is input to the video processing circuit 112 and subjected to processing such as detection and gamma correction, and the image processing unit 1
13 is input. The video signal of the video processing circuit 112 is also input to the character multiplex and data broadcast decoder 141. The image processing unit 113 can obtain image compression processing or through. In the through state,
The video signal passes through the screen processing unit 113 and the multiplexing circuit 114 as it is and is input to the synthesizing circuit 131. The synthesizing circuit 131 can synthesize a character / graphic signal by character multiplex broadcasting or data broadcasting with the video signal, but if not specified, the video signal is directly input to the display unit 132.

In the multiplexing circuit 114, the output of the screen processing unit 124 and the output of the screen processing unit 113 can be multiplexed to obtain a two-screen display in which the screen of the display unit 132 is horizontally divided into two.

Therefore, when the normal two-screen display mode is set, the screen processing units 113 and 124 perform compression processing on the signals received by the corresponding tuners so that the signals are fit into the right and left split screens of the screen. . Then, these compressed video signals are multiplexed and output on the right and left sides on the screen by the multiplexing circuit 114, and are output via the combining circuit 131.
32.

Here, when the system is further set to the character multiplex broadcast signal processing or data broadcast signal processing mode, the character or graphic signal obtained by the character multiplex and data broadcast decoder 141 is displayed on the right screen by the synthesizing circuit 131. Is synthesized. It is assumed that the weather forecast, the golf course map, the golf player profile, and the score ranking are transmitted as the character multiplex and the supplementary data as in the previous embodiment. Then, in the image memory, the weather forecast, golf course map, golf player profile,
Score ranking data can be stored. Then, each data can be displayed as shown in FIGS. The display method is not limited to the above example, and may be a display state as shown in FIGS. 10 (a) and 10 (b), for example.

As described above, according to this television receiver, it is possible to effectively utilize the image memory and obtain various functional expansions for data processing of character multiplex broadcasting and data broadcasting.

FIG. 11 shows another embodiment of the present invention. In the case of this embodiment, whichever the output video signal of the video processing circuits 112 and 122,
It can be arbitrarily incorporated into the character multiplex and data broadcast decoder 141. For this purpose, the selector 142 is provided on the input side of the character multiplex and data broadcast decoder 141. Furthermore, this character multiplex and data broadcast decoder 141
Is an RGB output type, and in this case, the combining circuit 131
Are configured so that RGB signals can be combined. Output R of character multiplex and data broadcast decoder 141
The GB signal is converted into a luminance (Y) signal and a color difference signal by the matrix circuit 143 and input to the selector 123. In each embodiment, the color signal system and the audio system are omitted.

Even in the embodiment shown in FIG. 11, the display operation as shown in FIGS. 7, 9 and 10 can be obtained.
As a result, it becomes possible to review the program of the character multiplex broadcast or the data broadcast later. For example, it is possible to review the weather forecast and stock information.

According to the above-mentioned embodiment, when the contents of the image memory are confirmed later, only the image transmitted by the character multiplex broadcast or the data broadcast is used. Therefore, when the selector 123 portion is further used as a superimposing circuit or an adding circuit, the image sent in the present program and the image sent in the character broadcast or the data broadcast are combined and stored in the image memory, and later. You can watch it while checking this program.

FIG. 12 shows an embodiment in which the selector 123 described above is replaced with a synthesizing circuit 144. In this case, the received signal on the tuner 121 side and the teletext signal are targeted. Then, in the image memory of the screen processing unit 124,
The image of this program and the character or figure of the character multiplex broadcast signal are combined and recorded.

FIG. 13 shows still another embodiment.
In this embodiment, the sync signal from the video processing circuit 112 and the sync signal from the video processing circuit 122 are input to the selector 145, and one of them is selected and input to the screen processing unit 124. Further, either one of the video signal from the video processing circuit 122 and the video signal from the synthesizing circuit 147 is input to the screen processing unit 124 via the selector 146. Here, the synthesis circuit 147
Composes the output video signal of the screen processing unit 113 and the character multiplex broadcast signal or the data broadcast signal from the matrix 143.

Now, it is assumed that the tuner 111 is broadcasting a golf program. Here, it is assumed that the player's profile, course guide map, score, etc. are broadcast in the complementary program. Then, the synthesizing circuit 147 can obtain a synthesized video of the video of the main program and the video of the complementary program. Therefore, the selector 146 can be set to select the output of the synthesizing circuit 147, and the screen processing unit 124 can be set to store the synthesized video of the video of the main program and the video of the complementary program. At this time, the selector 145 selects the sync signal from the video processing circuit 112.

For example, it is assumed that the moving picture of the main program and the video of the complementary program as shown in FIG. 14A are displayed. At this time, the video of this program is passed through the screen processing unit 113 and the multiplexing circuit 114, and the video of the complementary program from the character multiplex and data broadcast decoder 141 is synthesized and displayed in the synthesis circuit 131. . Next, when the viewer operates to store the image of FIG. 14A, the output of the screen processing unit 113 and the output of the matrix circuit 143 are combined, and the video signal passing through the selector 146 is converted into the image of the screen processing unit 124. Stored in memory. Then, in the stored image display mode, a display as shown in FIG. 14B is obtained. That is, the screen on the right side is the image stored previously, and the screen on the left side is the image in which the image of the present program currently being broadcast and the complementary program (which is the score information at this time) are combined.

When the image signal of the complementary program is stored in the screen processing unit 124, if the composition with the image of the present program is prohibited,
The synthesizing circuit 147 does not perform synthesizing with the video of this program, and a display as shown in FIG. 14C can be obtained.

Further, if a quiz program is being performed as shown in FIG. 15A and the problem is being performed in the character multiplex broadcasting or the data broadcasting, if the complementary program is stored, it will be displayed later. As shown in FIG. 15 (b), it is possible to see the situation when the problem is raised. Further, if the combination with the video of the main program is prohibited, the combination circuit 147 does not perform the combination with the video of the main program, and the display as shown in FIG. 15C can be obtained.

In the television receiver shown in FIG. 13, the image of the complementary program and the image of the main program are combined in the combining circuit 147 so that they can be stored in the screen processing unit 124. However, the configuration is not limited to this, and the configuration shown in FIG. 16 may be used.

In FIG. 16, the matrix circuit 14
3 is supplied with the output of the combining circuit 131. Other configurations are the same as those of the previous embodiment,
The same reference numerals are attached. According to this television receiver, the RGB signal signal after the character / graphic information and the video of the present program are combined is converted again into the luminance signal and the color difference signal in the matrix circuit 143, and the luminance signal and the color difference signal are converted by the switch 146. It can be stored in image memory. In this case, the image may be reduced and stored, or may be stored as it is in the size of one screen. Also, depending on the capacity of the image memory, a plurality of screens may be stored.

[0064]

As described above, according to the present invention,
The use efficiency of the image memory and compression / decompression circuit has been dramatically improved,
Memory or the like can be used to gain expanded use of complementary programming.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a system to which a data broadcast transmission and reception device of the present invention is applied.

FIG. 2 is an explanatory diagram of character multiplex and data broadcasting signals.

FIG. 3 is a diagram showing an example of data packets of character multiplex and data broadcasting signals.

FIG. 4 is a diagram showing a character multiplex and data broadcast decoder according to the present invention.

FIG. 5 is a diagram showing an example of an embodiment of the apparatus of the present invention.

FIG. 6 is a timing chart shown to explain an operation example of the apparatus shown in FIG. 5;

FIG. 7 is a diagram showing a display example by the device of the present invention.

FIG. 8 is a view showing another embodiment of the device of the invention.

9 is a diagram showing a display example by the apparatus of FIG.

FIG. 10 is a view showing another display example by the device of FIG.

FIG. 11 is a view showing still another embodiment of the device of the present invention.

FIG. 12 is a view showing still another embodiment of the device of the present invention.

FIG. 13 is a view showing still another embodiment of the device of the present invention.

FIG. 14 is a diagram showing still another display example by the device of the present invention.

FIG. 15 is a diagram showing another display example by the device of the present invention.

FIG. 16 is a view showing still another embodiment of the device of the present invention.

[Explanation of symbols]

11 ... TV receiver, 12 ... broadcasting station, 13 ... telephone line network,
14 ... Collection station, 22 ... Sync separation section, 23 ... A / D converter, 24 ... Waveform equalization section, 25 ... Data acquisition / error correction section, 26 ... Buffer RAM, 27 ... CPU, 28 ... Program ROM, 29 ... Character font ROM, 31 ... Display control unit, 32 ... Display memory, 33 ... Color map memory, 34 ... D / A converter, 37 ... Operation input I / F, 38
... Modem, 39 ... Line connection section, 41 ... Work RAM, 42
... program RAM, 43 ... non-volatile memory, 111, 121
... tuner, 112, 122 ... video processing circuit, 113
... screen processing unit, 114 ... multiplex circuit, 123 ... selector,
Reference numeral 124 ... Screen processing unit, 131 ... Combining circuit, 132 ... Display unit, 141 ... Character multiplex and data broadcast decoder, 142
... selector, 143 ... matrix circuit, 144 ... combining circuit, 145, 146 ... switch, 147 ... combining circuit,
150 ... Remote controller, 151 ... Main controller.

Claims (7)

[Claims] 1. A receiving means capable of receiving a television broadcast signal, a video signal processing means for displaying a video signal, which is a received signal of the receiving means, on a display means, and a receiving channel of the receiving means being switched one after another for reception. A data broadcast receiving and demodulating means for receiving and demodulating a data broadcast which is included in the television broadcast signal and is transmitted by being multiplexed in a data channel independent of the video / audio signal, and which is demodulated, Characters comprising storage means for storing the image data demodulated by the data broadcast receiving and demodulating means, and control means for reading the contents of the storage means in response to an operation command and displaying the contents on the display means. Multi-screen display TV receiver with built-in multiple decoder. 2. A multi-screen display television receiver with a built-in character multiplex decoder according to claim 1, wherein said storage means stores each image corresponding to a plurality of channels one screen at a time. 3. A multi-screen display television receiver with a built-in character multiplex decoder according to claim 1, wherein said storage means stores reduced images of respective images corresponding to a plurality of channels. 4. Receiving means including first and second tuners capable of simultaneously receiving two-channel television broadcast signals, display means for displaying video signals, and received signals of the first tuner. A video signal processing means for displaying a video signal on one of the left and right split screens of the display means, and a data channel included in the television broadcast signal received by the first tuner and independent of the video / audio signal. A data broadcast receiving and demodulating means for receiving and demodulating the data broadcast transmitted in a multiplexed manner; a storage means for storing the image data demodulated by the data broadcast receiving and demodulating means; And a display control means for reading the contents of the means in response to an operation command and displaying the contents on the other of the left and right split screens of the display means. Multiplex decoder built-in multi-screen display television receiver. 5. A multi-screen display television receiver with a built-in character multiplex decoder according to claim 4, wherein said storage means stores only said image data. 6. The character according to claim 4, wherein the storage means stores the image data as a combined image in a form in which the image signal which is the reception signal of the first tuner is combined. Multi-screen display TV receiver with built-in multiple decoder. 7. The synthetic video is created by a synthetic circuit that synthesizes the image data obtained from the data broadcast receiving and demodulating means with the video signal obtained from the video signal processing means. 7. A multi-screen display television receiver with a built-in character multiplex decoder according to claim 6.