JPH07336611A - Multiplex television broadcast receiver - Google Patents

Abstract

PURPOSE:To receive a multiplex broadcast of two channels utilizing a sub audio signal of a television broadcast by providing a device displaying/printing out 1st data multiplexed on the received television sub audio signal and a device displaying/printing out 2nd data multiplexed on the received television sub audio signal to the receiver. CONSTITUTION:A function demodulating/displaying TV multiplex data multiplexed by using a 7.5fH subcarrier is provided to the receiver in place of a conventional function of demodulating and printing out a facsimile signal multiplexed by using a 4.5fH subcarrier. A teletext multiplex signal multiplexed on a synchronizing signal is converted into a video signal and it is displayed on a display device 6. Then a 2nd 7.5fH subcarrier multiplexed on a TV audio signal is given to a 2nd band pass filter 31 and the 2nd subcarrier passing through the filter 31 is fed to a TV multiplex data demodulation section 32. The TV multiplex data are demodulated from the 2nd subcarrier and the demodulated TV multiplex data are displayed on a TV multiplex data display device 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION In television broadcasting, a device for receiving multiplex data and multiplex facsimile data which are broadcast in addition to multiplex voice broadcast and character multiplex broadcast which have been previously multiplexed and multiplexed with the television broadcast. Pertain.

[0002]

2. Description of the Related Art In today's information age, attention has been paid to a data broadcast for broadcasting digital data as well as a conventionally broadcast voice or image or a facsimile broadcast for broadcasting image data.
Although it is considered that these broadcasts are performed by using a dedicated medium such as using a broadcasting satellite, multiple broadcasts that use the radio waves of existing audio broadcasts or television broadcasts are a radio resource. Technology development is being actively promoted from the viewpoint of effective utilization.

[0003] Multiplex broadcasting using broadcast waves includes stereo broadcasting, audio multiplex broadcasting, character multiplex broadcasting, facsimile broadcasting and data broadcasting. Among these multiplex broadcasts, stereo broadcasts using FM broadcast waves and television broadcast waves have been put to practical use in Japan, and voice multiplex broadcasts and character multiplex broadcasts have made use of television broadcast waves. ing. Facsimile broadcasting has been put into practical use in the United States using FM broadcasting radio waves, and in Japan, using facsimile broadcasting radio waves is being considered. Data broadcasting using FM broadcasting waves is about to be carried out in Japan, and data broadcasting using television broadcasting waves is a subject for future study.

The multiplex broadcasting, particularly the multiplex broadcasting using the television broadcast radio wave will be described by taking the radio waves of the NTSC system color television broadcast adopted in Japan and the United States as an example. As shown in FIG. 1, the radio wave of the NTSC color television broadcast has an image carrier having a bandwidth of 5.5 MHz above the center frequency of the image carrier of 4.25 MHz and a total of 5.5 MHz above and above this carrier. ± 0.25 with center frequency at 4.5MHz
It is composed of a voice carrier having a bandwidth of 0.5 MHz in total, and the total bandwidth is 6 MHz.

Among the above-mentioned multiple broadcasts, the character multiplex broadcast using the radio wave of the television broadcast transmits the data multiplexed by utilizing the blanking period in the television video signal included in the video carrier. Other FM stereo broadcasts, FM data broadcasts, FM facsimile broadcasts, television stereo broadcasts, television audio multiplex broadcasts and television facsimile broadcasts broadcast programs by subcarriers in the audio band. The multiplex broadcasting using this subcarrier will be described with respect to the television sound multiplex broadcasting and the television facsimile broadcasting based on the report of the facsimile broadcasting committee of the Telecommunications Technology Council (February 16, 1991).

FIG. 2 shows a modulation spectrum in the television multiplex broadcasting facsimile system. In this figure, the horizontal axis is the horizontal scanning frequency fH = 525.
This is the voice carrier in the unit of 59.94 Hz / 2 = 15.73425 KHz, and the vertical axis represents the amount of deviation from the main carrier in the unit of KHz. In this multiplex broadcast modulation spectrum, the center frequency of the main audio carrier is 0fH, and the center frequency of the audio subcarrier for stereo and dual audio sub-audio is 2fH. In this case, the stereo audio shift amount is 20 KHz, and the double voice shift amount is 15 KHz.
It is set to KHz. Further, the center frequency of the sub-carrier for the control signal for controlling the sub-audio is set to 3.5 fH.

The center frequency of the subcarrier for the analog type facsimile is set to 6fH, and the frequency band is 4f.
It is from H to 8fH. Since this analog facsimile may interfere with voice multiplex broadcasting, the facsimile signals cannot be multiplexed during the voice multiplex broadcasting period. Therefore, it is also considered to make the voice multiplexing compatible with the analog facsimile by deleting the frequency band from 4fH to 5fH.

For this analog facsimile,
The center frequency of the sub-carrier for the digital facsimile is set at 4.5 fH from the viewpoint of interference with the audio multiplex broadcasting,
The frequency band used is 1 fH from 4 fH to 5 fH, the frequency deviation of the main carrier is ± 2 KHz, and the modulation method is 4-phase PSK (Phase Shift Keying).

FIG. 3 is a block diagram of a conventional television receiver for receiving TV stereo sound, TV double sound and TV character multiplex data together with a TV image. This television receiver is a TV tuner unit, TV
It is composed of an image processing unit and a TV sound processing unit. T
The V tuner section is composed of a TV tuner 2 connected to a TV antenna 1.

The TV image processing section includes a video detection section 3 connected to the TV tuner 2, a signal separation section 4 connected to the video detection section 3, a video amplification section 5 connected to the signal separation section 4 and character multiplex data. It is composed of a TV image display device 6 such as a cathode ray tube which is switchably connected to the demodulation unit 7, the video amplification unit 5 or the character multiplex data demodulation unit 7.

The TV audio processing unit is a TV audio detection unit 8 connected to the TV tuner 2, a TV audio main / sub separation unit 9 connected to the TV audio detection unit 8, and a TV connected to the TV audio main / sub separation unit 9. Sub audio demodulation unit 10, TV audio main / sub separation unit 9, TV stereo matrix circuit 11 connected to TV sub audio demodulation unit 10, TV connected to TV sub audio demodulation unit 10.
It is composed of a dual audio circuit 12, a TV stereo matrix circuit 11, and a speaker 13 connected to the TV dual audio amplification unit 12.

The TV signal received by the TV antenna 1 is
The TV tuner 2 tunes and selects a video signal and an audio signal. The selected video signal is detected by the video detection unit 3,
Further, the signal separation unit 4 separates the synchronization signal and the image signal,
The image signal is displayed on the TV image display device 6 via the image amplification section 5. The character multiplex data multiplexed with the sync signal is extracted from the separated sync signal, demodulated by the character multiplex data demodulation unit 7, converted into a video signal, and displayed on the TV image display device 6.

On the other hand, the TV audio signal is detected by the TV audio detection unit 8 and separated by the TV audio main / sub separation unit 9 into the main audio signal and the sub audio signal. A stereo sound is extracted from the sub audio signal and the main audio signal demodulated by the audio demodulation unit 10 by the TV stereo matrix circuit 11, and the demodulated sub audio is the TV 2
In the case of heavy audio, the recovered audio signals demodulated by the TV sub audio demodulation unit 10 are taken out via the TV dual audio circuit 12, and these audio signals are converted into audio by the speaker 13.

FIG. 4 is a block diagram of a conventional television receiver that receives a TV multiplex facsimile data signal in addition to a stereo audio, dual voice and character multiplex data signal together with an image. This television receiver is composed of a TV tuner section, a TV image processing section, and a TV voice / multiplex facsimile data processing section. Among these components, the configuration and operation of the TV tuner unit and the TV image processing unit, and the configuration and operation for processing TV stereo sound and TV double sound are the same as those of the television receiver shown in FIG. Since the operation is the same, the description thereof will be omitted here.

The TV voice detection section 8 is further connected to a first band filter 14 for passing a first subcarrier of 4.5 fH, and the first band filter 14 is connected to a TV multiplex facsimile data demodulation section 15 for connection to a TV. A TV multiplex facsimile data printer 16 is connected to the multiplex facsimile data demodulation unit 15. The first subcarrier of 4.5 fH multiplexed with the TV audio signal is pass-selected by the first bandpass filter 14, and the first subcarrier passed by the first bandpass filter 14 is selected by the TV multiplex facsimile data demodulation unit 1.
5, the TV multiplex facsimile data is demodulated from the first subcarrier sent to the TV multiplex facsimile data demodulator 15, and the demodulated TV multiplex facsimile data is printed by the TV multiplex facsimile printer 16.

FIG. 5 is a block diagram of a conventional receiving apparatus for receiving FM multiplex facsimile data together with stereo sound of FM broadcast. This receiver is F
It is composed of an M tuner unit and an FM voice / multiplex facsimile data processing unit. The FM tuner unit includes an FM tuner 18 connected to the FM antenna 17.

The FM voice / multiplex facsimile data processing unit includes an FM detection unit 19 and an FM detection unit 19 connected to the FM tuner 18.
FM voice main / sub separation unit 20 connected to the detection unit 19, FM
FM sub voice demodulation unit 2 connected to voice main / sub separation unit 20
1, FM voice main / sub separation unit 20 and FM sub voice demodulation unit 21
An FM stereo matrix circuit 22 connected to the speaker 13, a speaker 13 connected to the FM stereo matrix circuit 22,
The FM detection unit 19 is further connected to a third band filter 23 that allows a subcarrier for FM facsimile data to pass therethrough, and the third band filter 23 is connected to an FM multiplex facsimile data demodulation unit 24 to be connected to the FM multiplex facsimile data demodulation unit. An FM multiplex facsimile data printer 25 is connected to 24.

In this receiving apparatus, the FM antenna 17
The FM broadcast signal received at is tuned by the FM tuner 18.
To be selected. The tuned / selected audio signal is the FM detector 1
9, the FM audio main / sub separation unit 20 separates the main audio signal and the sub audio signal, and the main audio signal and the sub audio signal are separated by F
Stereo sound is extracted by the M stereo matrix circuit 22, and these sound signals are converted into sound by the speaker 13. The sub-carrier for FM facsimile data multiplexed in the FM voice signal is pass-selected by the third band filter 23, and is F selected by the third band filter 23.
The subcarrier for M facsimile data is sent to the TV multiplex facsimile data demodulation unit 24, the FM multiplex facsimile data is demodulated from the subcarrier sent in the TV multiplex facsimile data demodulation unit 24, and the demodulated facsimile data is FM multiplex facsimile. It is printed by the printer 25.

FIG. 6 is a block diagram showing the configuration of a conventional receiving apparatus that receives FM data multiplex broadcasting together with stereo sound of FM broadcasting. This receiving device comprises an FM tuner section and an FM voice / multiplex data processing section. Among these components, the configuration and operation for processing the FM tuner unit and the FM stereo sound are the same as the configuration and operation of the receiver shown in FIG. 5, and thus the description thereof will be omitted here. . The FM detection unit 19 is further connected to a fourth band filter 26 for passing a subcarrier for FM data, the fourth band filter 26 is connected to an FM multiplex data demodulation unit 27, and the FM multiplex data demodulation unit 27.
An FM multiplex data display device 28 is connected to. The subcarrier for FM data multiplexed in the audio signal is the fourth subcarrier.
The pass band is selected by the band filter 26, and the fourth band filter 2 is selected.
The sub-carrier for FM data, which has been passed and selected in 6, is sent to the TV multiplex data demodulation unit 27, and the TV multiplex data demodulation unit 27
The FM multiplex data is demodulated from the sub-carrier transmitted in step (4), and the demodulated FM multiplex data is displayed on the FM multiplex data display device 28.

By the way, as described above, the data broadcasting using the FM broadcasting radio wave is about to be carried out, and the one using the television broadcasting radio wave is a subject for future study. In addition, the center frequency of the subcarrier of the multiplex facsimile broadcasting using television radio waves, which is scheduled to be implemented, is set at 4.5 fH, and the used frequency band is 4
1 fH from fH to 5 fH, frequency deviation of main carrier is ± 2 KHz, modulation method is 4-phase PSK (Phase Shift Keyi)
ng = phase shift keying) is to be adopted.

In addition to this, the center frequency of the subcarrier is 7.5f.
It could be considered to be H, but in this case, it was considered that the interference to the audio multiplex broadcast was small, but the interference to the video signal occurred. Therefore, the maximum number of multiplexed broadcast programs that can be multiplexed in addition to the stereo broadcast and the audio multiplex broadcast that have been performed so far as the multiplex broadcast using the sub-audio of the television is two-channel facsimile broadcast. It was not possible to multiplex 2-channel data broadcasting or 1-channel facsimile broadcasting and data broadcasting.

There is also an analog facsimile system in which the center frequency of the subcarrier is set to 6fH and the frequency band is set from 4fH to 8fH. However, since this analog system facsimile may interfere with voice multiplex broadcasting, voice multiplex may occur. Facsimile signals cannot be multiplexed during the broadcast period. Therefore, it has been considered to eliminate the frequency band from 4fH to 5fH to make voice multiplexing compatible with an analog facsimile, but it has not been realized so far.

[0023]

SUMMARY OF THE INVENTION As a result of various experiments on multiplex broadcasting using sub-audio of a television, the present inventors have found that even when a sub-carrier having a center frequency of 7.5 fH is used, this sub-carrier has the frequency of the main carrier. It was confirmed that when multi-valued digital modulation such as a four-phase PSK method with a deviation of ± 2 to 3 KHz was performed, no interference occurred in the video signal. Based on the knowledge obtained from this experiment, in the patent application filed at the same time as this application, we propose a multiplex broadcasting system that is configured to modulate a 7.5 fH subcarrier by a multilevel digital system by a facsimile or a data digital signal. At the same time, the present application proposes an apparatus used for reception of this multiplex system.

In this case, by simultaneously performing the multiplex broadcasting using the subcarrier of 4.5 fH, it becomes possible to perform the multiplex broadcasting of two channels. In addition to the 2-channel data broadcast or 2-channel facsimile broadcast, each 1-channel broadcast of the 2-channel multiplex broadcast
Data broadcasting and facsimile broadcasting of channels can be performed.

The embodiments of the invention provided in the present application take the form of a television set capable of receiving television images and the form of a radio not capable of receiving television images. .
Further, it is also possible to display or print only a program of data broadcast or facsimile broadcast without reproducing the sound in the form of radio.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In describing the embodiments of the present invention, a two-channel multiplex broadcasting system using television broadcast waves provided in the patent application filed at the same time as the present application will be described. FIG. 7 shows a modulation spectrum in a two-channel multiplex broadcasting system using television broadcasting waves. In this figure, the horizontal axis is the horizontal scanning frequency fH = 525 lines × 59.94 Hz / 2 = 15.7
It is an audio carrier wave in the unit of 3425 KHz, and the vertical axis is the deviation amount with respect to the main carrier wave in the unit of KHz. In this multiplex broadcast modulation spectrum, the center frequency of the main audio carrier is 0fH, and the center frequency of the audio subcarrier for stereo and dual audio sub-audio is 2fH.
In this case, the shift amount of stereo sound is 20 KHz, 2
The shift amount of heavy voice is set to 15 KHz. Further, the center frequency of the sub-carrier for the control signal for controlling the sub-audio is set to 3.5 fH.

The center frequency of the first subcarrier for multiplexing the signal is set to 4.5 fH, the frequency band used is set to 1 fH from 4 fH to 5 fH, and the center frequency of the second subcarrier is set to 7.5 fH. Therefore, the used frequency band is set to 1fH from 7fH to 8fH. The signals are multiplexed by multi-level digital modulation such as 4-phase PSK, and the frequency deviation of the main carrier is ± 2 KHz. There is no particular limitation on the combination of the signals broadcasted by the multiplex broadcasting as long as the signals can be digitally modulated. Typical examples are character data and facsimile data. In addition to these, binary programs such as computer programs are also available. Image data other than data and facsimile data, or digital voice data can also be handled.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 8 shows a block configuration of a television receiver for receiving TV stereo sound, TV double sound and TV character multiplex data as well as TV images and TV multiplex data multiplexed using a subcarrier of 7.5 fH. It is a figure. This television receiver is multiplexed by using a 7.5 fH subcarrier instead of the function of demodulating and printing a facsimile signal which is multiplexed by using the conventional 4.5 fH subcarrier shown in FIG. It also has a function of demodulating and displaying TV multiplexed data.

This television receiver comprises a TV tuner section, a TV image processing section, and a TV sound / multiplex data processing section. Among these components, the configuration and operation of the TV tuner unit and the TV image processing unit, and the configuration and operation for processing TV stereo sound and TV double sound are the same as those of the conventional television receiver shown in FIG. Since the configuration and operation are the same, repetitive description will be omitted here.

A second band filter 31 for passing a second subcarrier of 7.5 fH is further connected to the TV voice detection unit 8, and a TV multiplex data demodulation unit 32 is connected to the second bandpass filter 31 for TV multiplex. A TV multiplex data display device 33 is connected to the data demodulation unit 32. Instead of the TV multiplex data display device 33 or together with the TV multiplex data display device 33, a printer for printing TV multiplex data may be used.

The television signal received by the TV antenna 1 is tuned and selected by the tuner 2 as a video signal and an audio signal. The tuned / selected video signal is detected by the video detection unit 3, further separated into a synchronization signal and an image signal by the signal separation unit 4, and the image signal is displayed on the display device 6 via the video amplification unit 5. The character multiplex signal multiplexed with the synchronization signal is
The separated sync signal is extracted, demodulated by the character multiplex signal demodulation unit 7, converted into a video signal, and displayed on the display device 6. It is multiplexed with TV audio signal 7.
The second subcarrier of 5 fH is pass-selected by the second bandpass filter 31, the second subcarrier wave pass-selected by the second bandpass filter 31 is sent to the TV multiplex data demodulation unit 32, and the TV multiplex data demodulation unit 32 sends it. From the allocated second subcarrier to T
The V multiplexed data is demodulated, and the demodulated TV multiplexed data is displayed on the TV multiplexed data display device 33.

FIG. 9 shows a TV image receiving TV stereo sound, TV double sound, TV character multiplex data, and TV multiplex data multiplexed using a subcarrier of 7.5 fH together with a TV image. It is another block diagram of the machine. This television receiver does not display the TV multiplex data on the TV multiplex data display device 33 of the television receiver for receiving the data TV multiplex data shown in FIG. 8, but a cathode ray tube for displaying a television image. It is configured to display multiple data on a TV image display device such as.

This television receiver is composed of a TV tuner section, a TV image processing section, and a TV sound / multiplex data processing section, like the television receiver shown in FIG. A television receiver that has been
The TV multiplex data display device 33 connected to the multiplex data demodulation unit 32 is connected to a TV signal format conversion unit 34, and the TV multiplex data can be displayed on the cathode ray tube in this TV signal format conversion unit 34. It is configured to be converted into a signal format, to be combined with a television image or a character multiplex image, or to be displayed alone on the TV image display device 6. Since the other configurations are common,
It will not be described in detail here.

FIG. 10 shows that the audio of the FM broadcast and the television broadcast is received, the stereo audio and the dual audio are received, and the multiplexed data multiplexed in the FM broadcast and the 7.5 fH of the television broadcast are received. FIG. 3 is a block configuration diagram of a receiving device that receives multiplexed data multiplexed using subcarriers. This receiving device includes an FM tuner section, an FM audio / multiplex data processing section, a TV tuner section, and a TV audio / multi-data processing section.
It is composed of a multiple data processing unit.

The FM tuner section is composed of the FM tuner 18 connected to the FM / TV shared antenna 34. The FM audio / multiplex data processing unit is an FM detection unit 19 connected to the FM tuner 18, an FM audio main / sub separation unit 20 connected to the FM detection unit 19, and an FM sub audio connected to the FM audio main / sub separation unit 20. FM / TV connected to the demodulation unit 21, the FM audio main / sub separation unit 20, and the FM sub audio demodulation unit 21.
The stereo matrix circuit 35 and the speaker 13 connected to the FM / TV stereo matrix circuit 35 are connected. The FM detector 19 is further connected to a fourth band filter 26 for passing a subcarrier for FM data,
An FM multiplex data demodulation unit 27 is connected to the bandpass filter 26, and an FM multiplex data display device 28 is connected to the FM multiplex data demodulation unit 27.

The television tuner section is composed of the TV tuner 2 connected to the FM / TV common antenna 34. TV voice / multiple data processing unit is TV tuner 2
To the TV audio detection unit 8, the TV audio main / sub separation unit 9 and the TV audio main / sub separation unit 9 connected to the TV audio detection unit 8.
TV sub audio demodulation unit 10 and TV main / sub separation unit 9 connected to
And an FM / TV stereo matrix circuit 35 connected to the TV sub audio demodulation unit 10, a TV dual audio circuit 12 connected to the TV sub audio demodulation unit 10, and a TV multiplex data demodulation unit connected to the TV sub audio demodulation unit 10. 32, and the TV dual audio circuit 12 is connected to the speaker 13. The TV sound detection unit 8 is further connected to a second band filter 31 that allows the second subcarrier of 7.5 fH to pass through, and the second band filter 31 is connected to the TV multiplex data demodulation unit 3.
2 is connected, and the TV multiplex data demodulation unit 32 is connected to the TV multiplex data display device 33. Instead of the TV multiplex data display device 33 or together with the TV multiplex data display device 33, a printer for printing TV multiplex data may be used.

In this receiving device, the FM broadcast signal received by the FM / TV common antenna 34 is received by the FM tuner 1.
It is tuned and selected at 8. The tuned / selected FM audio signal is detected by the FM detection unit 19, and the FM audio main / sub separation unit 20 is detected.
Is separated into a main audio signal and a sub audio signal, stereo audio is extracted from the main audio signal and the sub audio signal by the FM / TV stereo matrix circuit 35, and these audio signals are converted into audio by the speaker 13. The sub-carrier for FM multiplex data multiplexed in the audio signal is pass-selected by the fourth band filter 26, and the sub-carrier for FM multiplex data pass-selected by the fourth band-pass filter 26 is sent to the FM multiplex data demodulator 27. The FM multiplex data is demodulated from the subcarriers sent and sent by the FM multiplex data demodulation unit 27, and the demodulated FM multiplex data is displayed on the FM multiplex data display device 28.

On the other hand, the TV broadcast signal received by the FM / TV common antenna 34 is tuned / selected by the TV tuner 2. The tuned / selected audio signal is T
The sub audio signal detected by the V audio detection unit 8, separated into the main audio signal and the sub audio signal by the TV audio main / sub separation unit 9, and demodulated by the TV sub audio demodulation unit 10 when the sub audio is stereo. If the stereo sound is extracted from the main sound signal by the FM / TV stereo matrix circuit 35 and the demodulated sub sound is TV double sound, the restored sound signal demodulated by the TV sub sound demodulation unit 10 is TV double sound. The audio signals taken out through the circuit 12 are converted into audio by the speaker 13.

7.5 fH multiplexed with TV audio signal
Of the second subcarrier is selected by the second band filter 31, and the second subcarrier which is selected by the second band filter 31 is transmitted to the TV multiplex data demodulation unit 32 and is transmitted to the TV multiplex data demodulation unit 32. The TV multiplexed data is demodulated from the second subcarrier, and the demodulated TV multiplexed data is transmitted to the TV.
It is displayed on the multiplex data display device 33. In the embodiment shown in FIG. 10, FM multiple data display 28 and T
Although the V multiplex data display device 33 is used, one data display device can be switched and used, or one data display device can be simultaneously displayed.

FIG. 11 is a block diagram of a receiving apparatus for receiving audio of FM broadcasting and television broadcasting, receiving stereo audio and dual audio, and receiving facsimile multiplex broadcasting of FM broadcasting and television broadcasting. It is a block diagram. This receiving device includes an FM tuner section, an FM audio / multiplex data processing section, a TV tuner section, and a TV audio / multi-data processing section.
It is composed of a multiplex facsimile processing section. Among these components, the configuration for processing the FM tuner section and the FM stereo sound, and the configuration and operation for processing the TV tuner section, the TV stereo sound, and the TV double sound are the same as those of the receiver shown in FIG. Since the configuration and operation are the same, repetitive description will be omitted here.

The FM detector 19 further passes a third band filter 2 for passing a subcarrier for FM facsimile data.
3 is connected, an FM multiplex facsimile data demodulator 24 is connected to the third band filter 23, and the FM multiplex facsimile data printer 2 is connected to the FM multiplex data demodulator 24.
5 is connected. The TV voice detection unit 8 has 7.
Second bandpass filter 3 that passes the second subcarrier of 5 fH
1 is connected, a TV multiplex facsimile data demodulator 16 is connected to the second band filter 31, and a TV multiplex facsimile data printer 16 is connected to the TV multiplex facsimile data demodulator 16.

The sub-carrier for the FM multiplex facsimile data multiplexed on the voice signal is pass-selected by the third band filter 23, and is F selected by the third band filter 23.
The subcarrier for M-multiplex facsimile data is sent to the FM multiplex facsimile data demodulation unit 24, and the subcarrier transmitted from the FM multiplex facsimile data demodulation unit 27 is F
FM demodulated by M-multiplex facsimile data and demodulated
The multiplex facsimile data is printed by the FM multiplex facsimile data printer 25. Further, the second subcarrier of 7.5 fH multiplexed with the TV audio signal is pass-selected by the second bandpass filter 31, and the second subcarrier wave pass-selected by the second bandpass filter 31 is the TV multiplex facsimile data demodulation unit. 15, the TV multiplex facsimile data is demodulated from the second subcarrier transmitted to the TV multiplex facsimile data demodulating unit 15, and the demodulated TV multiplex facsimile data is sent to the TV multiplex facsimile data printer 16
Is printed with.

In the embodiment shown in FIG. 11, the FM multiplex facsimile data printer 25 and the TV multiplex facsimile data printer 16 are used, but it is also possible to switch and use one facsimile data printer. is there. Further, instead of the FM multiplex facsimile data printer 25 and the TV multiplex facsimile data printer 16, or instead of the FM multiplex facsimile data printer 25 and the TV multiplex facsimile data printer 1
6, a display device for displaying TV multiplex facsimile data can be used.

FIG. 12 shows a TV together with a TV image.
In addition to stereo sound, TV double sound and TV character multiplex data, the first sub-carrier of 4.5 fH and 7. shown in FIG.
It is a block configuration diagram of a television receiver which receives a TV multiplex data signal of two channels by using a second subcarrier of 5fH. This television receiver uses the 7.5 fH second subcarrier shown in FIG.
In addition to the function of demodulating and displaying V multiplex data, 4.5 fH
TV of another channel using the first subcarrier of
A function for demodulating and displaying multiplexed data is added.

This television receiver comprises a TV tuner section, a TV image processing section, and a TV sound / multiplex signal processing section. Among these components, the configuration and operation of the TV tuner unit and the TV image processing unit, and the configuration and operation for processing TV stereo sound and TV double sound are the same as those of the conventional television receiver shown in FIG. Since the configuration and operation are the same, repetitive description will be omitted here.

The TV sound detector 8 is further connected to a first band-pass filter 14 which passes a first sub-carrier of 4.5 fH and a second band-pass filter 31 which passes a second sub-carrier of 7.5 fH. The band filter 14 has a first TV
The multiplex data demodulator 36 is connected to the second bandpass filter 3
The second TV multiplex data demodulation unit 37 is connected to the first
The TV multiplex data demodulation unit 36 is connected to the TV multiplex data display device 38, and the second TV multiplex data demodulation unit 31 is connected to the T multiplex data demodulation unit 31.
A V multiplex data display device 39 is connected. 2
One TV multiplex data display device is used instead of the one TV multiplex data display devices 38 and 39, and this one TV multiplex data display device is used as the first multiplex data demodulation unit 36 and the second multiplex data demodulation unit. It is also possible to switch and connect to 37 and switch and display, or simultaneously connect and display simultaneously. Further, instead of the TV multiplex data display device 38 or 39, or the TV multiplex data display device 38 or 39.
A printer that prints TV multiplex data can also be used.

4.5 fH multiplexed with TV audio signal
Of the first subcarrier is selected by the first bandpass filter 14, and the first subcarrier selected by the first bandpass filter 14 is sent to the first TV multiplex data demodulation unit 36.
The TV multiplexed data is demodulated from the first subcarrier transmitted in the multiplexed data demodulating unit 36, and the demodulated TV multiplexed data is displayed on the TV multiplexed data display device 38. Also,
The second subcarrier of 7.5 fH multiplexed with the TV audio signal is pass-selected by the second band filter 31, and the second sub-carrier passed by the second band filter 31 is passed to the second TV multiplex data demodulator 37. The TV multiplexed data is demodulated from the second subcarrier transmitted and transmitted in the second TV multiplexed data demodulating section 37, and the demodulated TV multiplexed data is displayed on the TV multiplexed data display device 39.

FIG. 13 shows a TV together with a TV image.
In addition to stereo sound, TV double sound and TV character multiplex data, the first sub-carrier of 4.5 fH and 7. shown in FIG.
It is a block diagram of a television receiver that receives TV multiplex facsimile data of two channels by using a second subcarrier of 5fH. This television receiver is shown in FIG.
In place of the function of demodulating and displaying the TV multiplexed data of 2 channels by using the first subcarrier of 4.5fH and the second subcarrier of 7.5fH shown in 2, the first subcarrier of 4.5fH and 7 A function for demodulating and displaying 2-channel TV multiplex facsimile data using the second subcarrier of 0.5 fH is added.

This television receiver comprises a TV tuner section, a TV image processing section, and a TV sound / multiplex signal processing section. Among these components, the configuration and operation of the TV tuner unit and the TV image processing unit, and the configuration and operation for processing TV stereo sound and TV double sound are the same as those of the conventional television receiver shown in FIG. Since the configuration and operation are the same, repetitive description will be omitted here.

The TV sound detection section 8 is further connected to a first band-pass filter 14 for passing a first sub-carrier of 4.5 fH and a second band-pass filter 31 for passing a second sub-carrier of 7.5 fH, and a first band-pass filter 31. The band filter 14 has a first TV
The multiplex facsimile data demodulation unit 40 is connected, the second TV multiplex facsimile data demodulation unit 41 is connected to the second band-pass filter 31, and the first multiplex TV data facsimile data demodulation unit 40 is connected to the television multiplex facsimile data printer 4.
2 is connected to the second TV multiplex data demodulation unit 41
The multiplex data display device 43 is connected. It should be noted that instead of the two TV multiplex facsimile data printers 42 and 43, one TV multiplex facsimile data printer is used, and this one TV multiplex facsimile data printer is used as the first TV multiplex facsimile data demodulation section 40 and the second TV multiplex facsimile data demodulator 40. It is also possible to switch and connect to the multiplex facsimile data demodulation unit 41. Also, the TV multiplex facsimile printer 42
Alternatively, instead of 43, or together with the TV multiplex facsimile printer 42 or 43, a display device for displaying TV multiplex facsimile data may be used.

4.5 fH multiplexed with TV audio signal
Of the first subcarrier is selected by the first bandpass filter 14, and the first subcarrier selected by the first bandpass filter 14 is sent to the first TV multiplex facsimile data demodulation unit 40. The TV multiplex facsimile data is demodulated from the first subcarrier transmitted at 40, and the demodulated TV multiplex facsimile data is printed by the TV multiplex facsimile data printer 42. Further, the second subcarrier of 7.5 fH multiplexed with the TV audio signal is pass-selected by the second bandpass filter 31,
The second subcarrier selected by the second bandpass filter 31 is sent to the second TV multiplex facsimile data demodulation unit 41,
The TV multiplex facsimile data is demodulated from the second subcarrier transmitted in the second TV multiplex facsimile data demodulation unit 41, and the demodulated TV multiplex facsimile data is T
The data is printed by the V-multiplex facsimile data printer 43.

FIG. 14 shows a TV together with a TV image.
In addition to stereo sound, TV double sound and TV character multiplex data, the first sub-carrier of 4.5 fH and 7. shown in FIG.
It is a block configuration diagram of a television receiver for receiving 1-channel TV multiplex facsimile data and 1-channel TV multiplex data by using a second subcarrier of 5 fH. This television receiver is shown in FIG.
TV multiplexing of 2 channels using the 1st subcarrier of 5fH and the 2nd subcarrier of 7.5fH Instead of the function of demodulating and printing facsimile data, 1 channel TV multiplexing using the 1st subcarrier of 4.5fH A function is added to demodulate / print facsimile data and demodulate / display 1-channel TV multiplexed data using the second subcarrier of 7.5 fH.

This television receiver comprises a TV tuner section, a TV image processing section, and a TV sound / multiplex signal processing section. Among these components, the configuration and operation of the TV tuner unit and the TV image processing unit, and the configuration and operation for processing TV stereo sound and TV double sound are the same as those of the conventional television receiver shown in FIG. Since the configuration and operation are the same, repetitive description will be omitted here.

The TV sound detector 8 is further connected to a first band filter 14 for passing a first subcarrier of 4.5 fH and a second band filter 31 for passing a second subcarrier of 7.5 fH. The band multiplex filter 14 is connected to the TV multiplex facsimile data demodulation unit 15, the second bandpass filter 31 is connected to the TV multiplex data demodulation unit 32,
The TV multiplex facsimile data demodulator 15 is connected to the TV multiplex facsimile data printer 16, and the TV multiplex data demodulator 32 is connected to the TV multiplex data display device 33. Instead of the TV multiplex facsimile data printer 16 or together with the TV multiplex facsimile data printer 16, a display device for displaying the TV multiplex facsimile data can be used. Further, instead of the TV multiplex data display device 33 or together with the TV multiplex data display device 33, a printer for printing the TV multiplex data can be used.

4.5 fH multiplexed with TV audio signal
The first subcarrier of is selected by the first bandpass filter 14, and the first subcarrier selected by the first bandpass filter 14 is sent to the TV multiplex facsimile data demodulator 15.
The TV multiplex facsimile data is demodulated from the first subcarrier transmitted by the TV multiplex facsimile data demodulation unit 15, and the demodulated TV multiplex facsimile data is printed by the TV multiplex facsimile data printer 16. Further, the second subcarrier of 7.5 fH multiplexed in the TV audio signal is pass-selected by the second band filter 31, and the second sub-carrier pass-selected by the second band filter 31 is TV multiplexed data demodulation unit 41. Sent to the TV multiplex data demodulation unit 4
The TV multiplex data is demodulated from the second subcarrier sent at 1, and the demodulated TV multiplex data is displayed on the TV multiplex data display device 33.

FIG. 15 shows a TV together with a TV image.
In addition to stereo sound, TV double sound and TV character multiplex data, the first sub-carrier of 4.5 fH and 7. shown in FIG.
It is another block block diagram of the television receiver which receives the TV multiplex data of 2 channels using the 2nd subcarrier of 5fH. This television receiver does not display the TV multiplex data on the TV multiplex data display devices 36 and 39 of the television receiver which receives the data TV multiplex data shown in FIG. 12, but displays the television image. It is configured to display multiple data on a TV image display device such as a cathode ray tube.

This television receiver is similar to the television receiver shown in FIG.
It is composed of an image processing unit and a TV voice / multiplex data processing unit. The television receiver shown in FIG.
In place of the TV multiplex data display device 38 connected to the first TV multiplex data demodulation part 36 and the TV multiplex data display device 39 connected to the second TV multiplex data demodulation part 37, a TV signal format conversion part 34 is switch-connected. In this TV signal format conversion unit 34, the TV multiplex data is converted into a signal format that can be displayed by the cathode ray tube, and combined with a television image or a character multiplex image, or by a TV alone.
It is configured to be displayed on the image display device 6. Since the other configurations are common, they will not be described in detail here.

FIG. 16 shows a TV together with a TV image.
In addition to stereo sound, TV double sound and TV character multiplex data, the first sub-carrier of 4.5 fH and 7. shown in FIG.
It is another block block diagram of the television receiver which receives 1-channel TV multiplex facsimile data and 1-channel TV multiplex data by using the 5 fH 2nd subcarrier. This television receiver displays data demodulated from 1-channel TV multiplexed data on the TV multiplexed data display device 33 using the 7.5 fH second subcarrier of the television receiver shown in FIG. Instead of this, it is configured to display data on a TV image display device such as a cathode ray tube for displaying a television image.

This television receiver is similar to the television receiver shown in FIG.
The television receiver shown in FIG. 14 is composed of an image processing unit and a TV audio / multiple signal processing unit.
A TV format conversion unit 34 is connected in place of the TV multiplex data display device 33 connected to the V multiplex data demodulation unit 32. In this TV format conversion unit 34, a signal capable of displaying TV multiplex data by a cathode ray tube. It is configured to be converted into a format, combined with a television image or a character multiplex image, or displayed alone on the TV image display device 6. Since the other configurations are common, they will not be described in detail here.

FIG. 17 shows that the sound of the television broadcast is received, the TV stereo sound and the TV double sound are received, and the first subcarrier of 4.5 fH and 7.5 fH.
FIG. 3 is a block configuration diagram of a receiver for receiving 2-channel TV multiplexed data using the second subcarrier of FIG. This receiving device is composed of a TV tuner section and a TV voice / multiplex data processing section.

The TV tuner section is composed of the TV tuner 2 connected to the TV antenna 1. The TV sound / multiplex data processing unit is a TV sound detection unit 8 connected to the TV tuner 2, a TV sound main / sub separation unit 9 connected to the TV sound detection unit 8, and a TV connected to the TV sound main / sub separation unit 9. TV stereo matrix circuit 1 connected to the sub audio demodulation unit 10, the TV audio main / sub separation unit 9, and the TV sub audio demodulation unit 10.
1, a TV dual audio circuit 12 connected to the TV sub audio demodulation unit 10, a first TV connected to the TV sub audio demodulation unit 10.
The TV dual audio circuit 12 is connected to the speaker 13 while being composed of the multiplex data demodulation unit 36 and the second TV multiplex data demodulation unit 37.

The TV sound detection section 8 is further connected to a first band filter 14 for passing a first subcarrier of 4.5 fH and a second band filter 31 for passing a second subcarrier of 7.5 fH. The band filter 14 has a first TV
The multiplex data demodulator 36 is connected to the second bandpass filter 3
The second TV multiplex data demodulation unit 37 is connected to the first
TV multiplex data display devices 38 and 39 are connected to the TV multiplex data demodulator 36 and the second TV multiplex data demodulator 37, respectively. Instead of the two TV multiplex data display devices 38 and 39, or the TV multiplex data display device 3
A display device for displaying TV multiplex facsimile data may be used together with 8 or 39.

In this receiving apparatus, the TV antenna 1
The TV tuner 2 receives and tunes and selects an audio signal of the television broadcast signal received by the TV tuner 2. The tuned / selected audio signal is detected by the TV audio detection unit 8, separated into a main audio signal and a sub audio signal by the TV audio main / sub separation unit 9, and when the sub audio is stereo, the TV sub audio demodulation unit. When the stereo sound is extracted from the sub audio signal demodulated in 10 and the main audio signal by the TV stereo matrix circuit 11, and the demodulated sub audio is a double audio, the TV sub audio demodulation unit 10
The recovered audio signals demodulated in (1) are taken out via the TV double audio circuit 12, and these audio signals are converted into audio by the speaker 13.

4.5 fH multiplexed with TV audio signal
Of the first subcarrier is selected by the first bandpass filter 14, and the first subcarrier selected by the first bandpass filter 14 is sent to the first TV multiplex data demodulation unit 36.
The TV multiplexed data is demodulated from the first subcarrier transmitted in the multiplexed data demodulating unit 36, and the demodulated TV multiplexed data is displayed on the TV multiplexed data display device 38. Also,
The second subcarrier of 7.5 fH multiplexed with the TV audio signal is pass-selected by the second band filter 31, and the second sub-carrier passed by the second band filter 31 is passed to the second TV multiplex data demodulator 37. The TV multiplexed data is demodulated from the second subcarrier transmitted and transmitted in the second TV multiplexed data demodulating section 37, and the demodulated TV multiplexed data is displayed on the TV multiplexed data display device 39. Although two TV multiple data display devices 38 and 39 are used in this embodiment, one TV multiple data display device may be configured to be used by switching or one TV multiple data display device. It is also possible to display the same at the same time.

FIG. 18 shows that a television broadcast sound is received, a TV stereo sound and a TV double sound are received, and a first subcarrier of 4.5 fH and 7.5 fH are received.
3 is another block diagram of a receiver for receiving 1-channel TV multiplexed facsimile data and 1-channel TV multiplexed data by using the second subcarrier of FIG. This receiver has a first subcarrier of 4.5 fH and 7.
Instead of the function of demodulating and printing 2-channel TV multiplex facsimile data using the second subcarrier of 5 fH, 4.
Demodulates and prints 1-channel TV multiplex facsimile data using the first subcarrier of 5fH and the second sub-carrier of 7.5fH.
A function for demodulating and displaying 1-channel TV multiplexed data using a subcarrier is added. This receiver is a TV
It is composed of a tuner section and a TV voice / multiplex data processing section.

Among these components, the TV tuner unit and the structure and operation for processing TV stereo sound and TV double sound are the same as those of the receiver shown in FIG. The description will be omitted.

The TV sound detector 8 has the first band-pass filters 14 and 7.5f which pass the first subcarrier of 4.5fH.
A second band-pass filter 31 that passes the second subcarrier of H is connected, a TV multiplex data demodulator 15 is connected to the first bandpass filter 14, and a TV multiplex data demodulator 32 is connected to the second bandpass filter 31. The TV multiplex facsimile data demodulator 15 is connected to the TV multiplex facsimile data printer 16, and the TV multiplex data demodulator 32 is connected to the TV multiplex data demodulator 32.
The V multiplex data display device 33 is connected. In addition, T
Instead of the V multiplex facsimile data printer 16 or together with the TV multiplex facsimile data printer 16, T
A display device for displaying V-multiplexed facsimile data can also be used. Also, instead of the TV multiplex data display device 33 or together with the TV multiplex data display device 33, the TV
A printer that prints multiplex data can also be used.

4.5 fH multiplexed with TV audio signal
The first subcarrier of is selected by the first bandpass filter 14, and the first subcarrier selected by the first bandpass filter 14 is sent to the TV multiplex facsimile data demodulator 15.
The TV multiplex facsimile data is demodulated from the first subcarrier transmitted by the TV multiplex facsimile data demodulation unit 15, and the demodulated TV multiplex facsimile data is printed by the TV multiplex facsimile data printer 16. Also, the second subcarrier of 7.5 fH multiplexed with the TV audio signal is pass-selected by the second band filter 31, and the second sub-carrier pass-selected by the second band filter 31 is the TV multiplex data demodulator 32. Sent to the TV multiplex data demodulation unit 3
The TV multiplex data is demodulated from the second subcarrier sent in 2, and the demodulated TV multiplex data is displayed on the TV multiplex data display device 33.

FIG. 19 shows that the audio of the FM broadcast and the television broadcast are received, the stereo audio and the dual audio are received, and the multiplexed data and the TV audio signal of the television broadcast are multiplexed into the FM broadcast. FIG. 3 is a block diagram of a receiving apparatus that receives multiplexed data of two channels multiplexed using a first subcarrier of 4.5 fH and a second subcarrier of 7.5 fH that are multiplexed. This receiver is
FM tuner section, FM voice / multiplex data processing section and TV
It is composed of a tuner section and a TV voice / multiplex data processing section.

The FM tuner section is composed of the FM tuner 18 connected to the FM / TV shared antenna 34. The FM audio / multiplex data processing unit is an FM detection unit 19 connected to the FM tuner 18, an FM audio main / sub separation unit 20 connected to the FM detection unit 19, and an FM sub audio connected to the FM audio main / sub separation unit 20. FM / TV connected to the demodulation unit 21, the FM audio main / sub separation unit 20, and the FM sub audio demodulation unit 21.
The stereo matrix circuit 35 and the speaker 13 connected to the FM / TV stereo matrix circuit 35 are connected. The FM detection unit 19 is connected to a fourth band filter 26 for passing a subcarrier for FM multiplex data, the fourth band filter 26 is connected to an FM multiplex data demodulation unit 27, and the FM multiplex data demodulation unit 27 is connected to it. The FM multiplex data display device 28 is connected.

The television tuner section is composed of the TV tuner 2 connected to the FM / TV common antenna 34. TV voice / multiple data processing unit is TV tuner 2
To the TV audio detection unit 8, the TV audio main / sub separation unit 9 and the TV audio main / sub separation unit 9 connected to the TV audio detection unit 8.
TV sub audio demodulation unit 10 and TV main / sub separation unit 9 connected to
And an FM / TV stereo matrix circuit 35 connected to the TV sub audio demodulation unit 10, a TV dual audio circuit 12 connected to the TV sub audio demodulation unit 10, and a TV multiplex data demodulation unit connected to the TV sub audio demodulation unit 10. 32, and the TV dual audio circuit 12 is connected to the speaker 13. The TV sound detector 8 further includes first band-pass filters 14 and 7. which pass the first subcarrier of 4.5 fH.
Second bandpass filter 3 that passes the second subcarrier of 5 fH
1 is connected, the first TV multiplex data demodulation unit 36 is connected to the first band filter 14, the second TV multiplex data demodulation unit 37 is connected to the second band filter 31, and the first TV
Multiplexed data demodulator 36 and second TV multiplexed data demodulator 3
TV multiple data display devices 38 and 39 are respectively connected to 7. The TV multiple data display devices 38 and 3
Instead of 9, or TV multiple data display devices 38 and 3
It is also possible to use a printer for printing TV multiplex data together with 9.

In this receiver, the FM broadcast signal received by the FM / TV common antenna 34 is transmitted to the FM tuner 1.
It is tuned and selected at 8. The tuned / selected audio signal is j
FM audio main / sub separation unit 2 detected by p9FM detection unit 19
When the main audio signal and the sub audio signal are separated by 0, the FM / TV stereo matrix circuit 35 is separated from the main audio signal and the sub audio signal.
Stereo audio is taken out by these, and these audio signals are converted into audio by the speaker 13. The subcarrier for FM data multiplexed in the audio signal is the fourth band filter 2
The subcarrier for FM data, which has been pass-selected in 6 and has been pass-selected in the fourth band filter 26, is the FM multiplex data demodulation unit 2
7, the FM multiplex data is demodulated from the subcarrier sent to the FM multiplex data demodulator 27, and the demodulated FM multiplex data is displayed on the FM multiplex data display device 28.

On the other hand, the TV tuner 2 tunes and selects an audio signal of the television broadcast signal received by the FM / TV shared antenna 34. The tuned / selected audio signal is T
The sub audio signal detected by the V audio detection unit 8, separated into the main audio signal and the sub audio signal by the TV audio main / sub separation unit 9, and demodulated by the TV sub audio demodulation unit 10 when the sub audio is stereo. If the stereo sound is extracted from the main sound signal by the FM / TV stereo matrix circuit 35 and the demodulated sub sound is TV double sound, the restored sound signal demodulated by the TV sub sound demodulation unit 10 is TV double sound. The audio signals taken out through the circuit 12 are converted into audio by the speaker 13.

4.5 fH multiplexed with TV audio signal
Of the first subcarrier is selected by the first bandpass filter 14, and the first subcarrier selected by the first bandpass filter 14 is sent to the first TV multiplex data demodulation unit 36.
The TV multiplexed data is demodulated from the first subcarrier transmitted in the multiplexed data demodulating unit 36, and the demodulated TV multiplexed data is displayed on the TV multiplexed data display device 38. Also,
The second subcarrier of 7.5 fH multiplexed with the TV audio signal is pass-selected by the second band filter 31, and the second sub-carrier passed by the second band filter 31 is passed to the second TV multiplex data demodulator 37. The TV multiplexed data is demodulated from the second subcarrier transmitted and transmitted in the second TV multiplexed data demodulating section 37, and the demodulated TV multiplexed data is displayed on the TV multiplexed data display device 39. Although two TV multiple data display devices 38 and 39 are used in this embodiment, one TV multiple data display device may be configured to be used by switching or one TV multiple data display device. It is also possible to display the same at the same time.

FIG. 20 shows that the audio of the FM broadcast and the television broadcast is received, the stereo audio and the dual audio are received, and the first subcarrier of 4.5 fH and 7.5.
FIG. 9 is another block configuration diagram of a receiver that receives 1-channel TV multiplex facsimile data and 1-channel TV multiplex data using the second subcarrier of fH. This receiver is a 2-channel TV using the first subcarrier of 4.5 fH and the second subcarrier of 7.5 fH shown in FIG.
1-channel TV using the first subcarrier of 4.5 fH instead of the function of demodulating and printing multiplex facsimile data
A function is added to demodulate and print the multiplexed facsimile data, and demodulate and display 1-channel TV multiplexed data using the second subcarrier of 7.5 fH. This receiving device includes an FM tuner section, an FM voice / multiplex signal processing section, and a T
It is composed of a V tuner section and a TV audio / multiplex signal processing section.

Among these components, the FM tuner unit and the configuration and operation for processing the FM stereo sound,
The structure and operation for processing the TV tuner unit and the TV stereo sound and the TV double sound are the same as the structure and operation of the receiver shown in FIG. 19, and thus the description thereof will be omitted here. The FM detection unit 19 is connected to a fourth band filter 26 that passes a subcarrier for FM multiplex data, the fourth band filter 26 is connected to an FM multiplex data demodulation unit 27, and the FM multiplex data demodulation unit 27 is connected to the FM multiplex data demodulation unit 27. FM
A multiplex data display device 28 is connected.

The TV sound detector 8 has the first band-pass filters 14 and 7.5f which pass the first subcarrier of 4.5fH.
A second band-pass filter 31 that passes the second subcarrier of H is connected, a TV multiplex data demodulator 15 is connected to the first bandpass filter 14, and a TV multiplex data demodulator 32 is connected to the second bandpass filter 31. The TV multiplex facsimile data demodulator 15 is connected to the TV multiplex facsimile data printer 16, and the TV multiplex data demodulator 32 is connected to the TV multiplex data demodulator 32.
The V multiplex data display device 33 is connected. In addition, T
Instead of the V multiplex facsimile data printer 16 or together with the TV multiplex facsimile data printer 16, T
A display device for displaying V-multiplexed facsimile data can also be used. Also, instead of the TV multiplex data display device 33 or together with the TV multiplex data display device 33, the TV
A printer that prints multiplex data can also be used.

The subcarrier for FM data multiplexed in the audio signal is pass-selected by the fourth band filter 26 and
The subcarrier for FM data that is pass-selected by the bandpass filter 26 is sent to the FM multiplex data demodulation unit 27, the FM multiplex data is demodulated from the subcarrier sent from the FM multiplex data demodulation unit 27, and the demodulated FM multiplex data is demodulated. The data is displayed on the FM multiplex data display device 28.

4.5 fH multiplexed with TV audio signal
The first subcarrier of is selected by the first bandpass filter 14, and the first subcarrier selected by the first bandpass filter 14 is sent to the TV multiplex facsimile data demodulator 15.
The TV multiplex facsimile data is demodulated from the first subcarrier transmitted by the TV multiplex facsimile data demodulation unit 15, and the demodulated TV multiplex facsimile data is printed by the TV multiplex facsimile data printer 16. Also, the second subcarrier of 7.5 fH multiplexed with the TV audio signal is pass-selected by the second band filter 31, and the second sub-carrier pass-selected by the second band filter 31 is the TV multiplex data demodulator 32. Sent to the TV multiplex data demodulation unit 3
The TV multiplex data is demodulated from the second subcarrier sent in 2, and the demodulated TV multiplex data is displayed on the TV multiplex data display device 33.

Although the FM multiplex data display device 28 and the TV multiplex data display device 33 are used in the embodiment shown in FIG. 20, one data display device may be switched and used. It can be configured to display at the same time. If the data to be multiplexed in FM broadcasting is facsimile data,
Fourth band pass filter 26, FM multiplex data demodulation unit 27
Instead of the FM multiplex data display section 28, a third bandpass filter 23, an FM multiplex facsimile data demodulation section 24.
It is also possible to use the FM multiplex facsimile data printer 25.

The apparatus shown in each of the embodiments described above is
Although the description has been given of the case of reproducing all of the character multiplex signal multiplexed with the video signal and the stereo sound and the double sound multiplexed with the audio signal, it goes without saying that these functions can be appropriately reduced as necessary. That is not the case.

[Brief description of drawings]

FIG. 1 is a radio wave standard diagram of NTSC color television broadcasting.

FIG. 2 is a modulation spectrum diagram of a television multiplex broadcasting facsimile system in the NTSC system.

FIG. 3 is a block configuration diagram of a conventional television receiver.

FIG. 4 is a block configuration diagram of a conventional television multiplex facsimile receiver.

FIG. 5 is a block configuration diagram of a conventional FM multiplex facsimile receiver.

FIG. 6 is a block diagram of a conventional FM multiplex data receiver.

FIG. 7 is a modulation spectrum diagram of television multiplex broadcasting according to the embodiment of the present invention in the NTSC broadcasting system.

FIG. 8 is a block configuration diagram of a television receiver according to an embodiment of the present invention that receives 1-channel multiplexed data.

FIG. 9 is a block diagram showing the configuration of a television receiver according to another embodiment of the present invention that receives 1-channel multiplexed data.

FIG. 10 is a block configuration diagram of a receiver that receives FM multiplex data and 1-channel TV multiplex data.

FIG. 11: FM multiplex facsimile and 1-channel TV
FIG. 3 is a block configuration diagram of a receiver for receiving multiplex facsimiles.

FIG. 12 is a block diagram showing the configuration of a television receiver according to an embodiment of the present invention that receives 2-channel TV multiplexed data.

FIG. 13 is a block configuration diagram of a television receiver according to an embodiment of the present invention that receives a two-channel TV multiplex facsimile.

FIG. 14 is a block diagram showing the configuration of a television receiver according to an embodiment of the present invention which receives 1-channel multiplex facsimile and 1-channel multiplex data.

FIG. 15 is a block configuration diagram of a television receiver according to another embodiment of the present invention which receives TV multiplexed data of 2 channels.

FIG. 16 is a block configuration diagram of a television receiver of an embodiment of the present invention which receives 1-channel multiplex facsimile and 1-channel multiplex data.

FIG. 17 is a block diagram of a television receiver according to an embodiment of the present invention that receives 2-channel TV multiplexed data.

FIG. 18 is a block configuration diagram of a television receiver according to an embodiment of the present invention that receives 1-channel multiplex facsimile and 1-channel multiplex data.

FIG. 19 is a block configuration diagram of a receiver of an embodiment of the present invention which receives FM multiplex data and 2-channel TV multiplex data.

FIG. 20 is a block configuration diagram of a receiver of an embodiment of the present invention which receives FM multiplex data, 1-channel TV multiplex facsimile, and 1-channel TV multiplex data.

[Explanation of symbols]

1,17,34 Antenna 2,18 Tuner 3 Video detection section 4 Signal separation section 5 Video amplification section 6 Image display device 7 Character multiplexed data demodulation section 8,19 Audio detection section 9,20 Audio main / sub separation section 10,21 Sub Voice demodulator 11,22,35 Stereo matrix circuit 12 Double voice circuit 13 Speaker 14,23,26,31 Band pass filter 15,24,40,41 Multiplex facsimile data demodulator 16,25,42,43 Multiplex facsimile data Printer 27, 32, 36, 37 Multiplex data demodulator 28, 33, 38, 39, Multiplex data display device

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[Procedure amendment]

[Submission date] August 24, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 10

[Correction method] Change

[Correction content]

[Figure 10]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 11

[Correction method] Change

[Correction content]

FIG. 11

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 14

[Correction method] Change

[Correction content]

FIG. 14

Claims (5)

[Claims] 1. A television multiplex broadcasting receiver used in a multiplex broadcasting system for multiplexing and broadcasting data of two channels in a sub audio broadcasting band of a television broadcasting radio wave composed of a video band, a main audio band and a sub audio band. The television multiplex broadcast receiving apparatus displays and prints the first data multiplexed on the received television sub-audio and the second data multiplexed on the received television sub-audio. A television multiplex broadcasting receiver having a device. 2. A television multiplex broadcasting receiver used in a multiplex broadcasting system for multiplexing and broadcasting two-channel facsimile data in a sub audio broadcasting band of a television broadcasting radio wave composed of a video band, a main audio band and a sub audio band. The television multiplex broadcasting receiver displays and prints the first facsimile data multiplexed on the received television sub-audio, and displays the second facsimile data multiplexed on the received television sub-audio. A television multiplex broadcasting receiver having a printing device. 3. A television used in a multiplex broadcasting system in which 1-channel data and 1-channel facsimile data are multiplexed and broadcast in a sub-audio broadcasting band of a television broadcasting radio wave composed of a video band, a main audio band and a sub-audio band. A multi-broadcast receiving device, wherein the television multi-broadcast receiving device displays / prints data multiplexed on the received television sub-audio, and displays / prints facsimile data multiplexed on the received television sub-audio. A multiplex television receiver for receiving television, comprising: 4. The apparatus according to claim 1, further comprising a device for displaying the received television image.
Alternatively, the television multiplex broadcast receiving apparatus according to claim 3. 5. An FM comprising a main voice band and a sub voice band.
5. The television multiplex broadcasting receiver according to claim 1, further comprising a device for displaying / printing data multiplexed in a sub audio band of a broadcast wave. .