JPH07336658A - Broadcasting system of television signal and television receiver - Google Patents

Abstract

PURPOSE:To prevent the video included in a television program but not desirous to young people from being viewed without fail from the beginning to the end of the program on the side of a television receiver. CONSTITUTION:A television receiver is provided with a mosaic processing circuit 43 and a switchover circuit 424 for selecting either one of the provided video as is and the video for which a mosaic processing is performed. On the side of a braodcasting station, the section of the video which is not desirous is picked up, and switchover information for switching the switchover circuit 424 to the side of the mosaic processing circuit is multiplexed on the television signal in the video section, to be broadcasted. The extraction circuit 50 of the television receiver extracts the switchover information. By the extracted switchover information, the switchover circuit 424 is switched. In the video section where the switchover signal is multiplexed, the video for which the mosaic processing is performed is outputted to a screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television signal broadcasting system and a television receiver used in this system.

[0002]

2. Description of the Related Art The video of a television program provided by television broadcasting is, for example, a video relating to the privacy of an individual, a violent video, an obscene video, etc. due to public broadcasting standards and voluntary restrictions on the part of the broadcasting station. Have been cut or mosaiced before being broadcast.

However, due to broadcasting standards and voluntary regulations on the part of the broadcasting station, even a television program after the problematic image is cut or mosaiced as described above,
There may be images that the infant does not want to see.

Under the present circumstances, as described above, when a video that is not desired to be shown to a child is provided as the video of the television program being watched, a television receiver is a method for preventing the video from being shown to the child. There is only a way to stop watching the TV program you were watching by turning off the power or selecting another channel.

[0005]

However, as described above, when the image provided by the television program is an image that the child watching together does not want to see, for example, a violent image, he does not want to see it. The decision is made after the violent footage has been provided. Therefore, even if the user decides that he / she does not want to show this image and turns off the power of the television receiver, in reality, the violent image between the time of making the decision and turning off the power of the television receiver is visible. There is.

[0006] Further, there is no information on how long an image that one does not want to show lasts. Therefore, when you turn off the power of the television receiving device because the image you do not want to see was provided, and when you turn on the television receiving device when the image is over, the image you do not want to show continues. Also happens. On the contrary, it takes too much time to turn off the power of the television receiver and turn it on again because an image that you do not want to see was provided.
Sometimes the flow of a program or story is lost, or the necessary information is missed.

It is an object of the present invention to provide a television signal broadcasting system and a television receiver capable of eliminating the above drawbacks.

[0008]

A television signal broadcasting system according to the present invention includes a television receiving device,
An image non-display processing circuit is provided for preventing the image from being correctly reproduced and displayed, and information for designating an image section in which the image is not correctly reproduced and displayed is multiplexed with a television signal for broadcasting.

Further, when the television receiver according to the present invention is made to correspond to the reference numerals of the embodiments described later, the image non-display processing circuit 43 for preventing the image from being reproduced and displayed correctly is multiplexed on the television signal. Extraction means 5 for extracting specific section designation information for designating a specific image section
0, and control means 60, 424 for controlling whether to display the image processed by the image non-display processing circuit 43 according to the specific section designation information extracted by the extraction means 50.

[0010]

In the broadcasting system configured as described above, for example, specific section designation information for designating a scene section that should not be shown to young people is multiplexed and broadcast in the television signal. In the television receiver, the specific section designation information is extracted, and in the designated specific section, an image non-display processing circuit, for example, an image that is not correctly reproduced and displayed from the mosaic processing circuit is displayed on the screen. The situation in which the scene is provided to the youth as it is is avoided. Then, when the scene ends, the normal section is displayed because the specific section designation information indicates it.

[0011]

Embodiments of a television signal broadcasting system and a television receiving apparatus according to the present invention will be described below.
Description will be given with reference to the drawings.

In the first embodiment described below,
The television receiver is provided with a mosaic processing circuit as an example of an image non-display processing circuit, and a signal for controlling the mosaic processing (hereinafter referred to as a mosaic control signal) is multiplexed in the vertical blanking period of the video signal. To broadcast.
Then, in the television receiving device that receives this, the mosaic control signal is extracted, and whether or not the mosaiced image is displayed is controlled by the extracted signal, and the image area in which the mosaic processing circuit is operated is controlled. To do so.

FIG. 1 is a diagram showing an example of a format of a mosaic control signal multiplexed in a vertical blanking period of a video signal.

As shown in FIG. 1, the mosaic control signal 90
Is an unused 1 in the vertical blanking period VBL of the video signal.
-Multiple horizontal scanning periods (H in the figure is a horizontal scanning period) are multiplexed. The mosaic control signal 90 includes mosaic ON / OFF information SW and position information that specifies a screen position for performing mosaic processing on a video signal. In this example, the position information designating the screen position for mosaic processing is the start horizontal position information HPS and the end horizontal position information HP.
E, start vertical position information VPS, end vertical position information V
It is composed of PE.

The mosaic on / off information SW is information for switching between displaying a mosaiced screen and a normal screen. That is, it is a signal that specifies whether or not the image is correctly reproduced and displayed, in other words, information that specifies a specific section in which the image is not correctly reproduced and displayed. For example, the mosaic on / off information SW is “1”
In the case of, a mosaiced screen is displayed,
When it is "0", the television receiver is controlled so as to display a normal screen on which mosaic processing is not executed.

The broadcasting station picks up a scene that should be subjected to mosaic processing in advance, and sets the mosaic on / off information SW to "1" in the section where the scene continues.
The other sections are "0". When specifying to mosaic the entire screen, position information is not added,
Position information is multiplexed when designating that only a specific area of one screen is to be mosaic-processed. However, position information designating the entire one screen may be added.

Of the start horizontal position information HPS, the start vertical position information VPS, the end horizontal position information HPE, and the end vertical position information VPE, the start horizontal position information HPS and the end horizontal position information HPE perform mosaic processing on the screen. An area in the horizontal direction is specified, and the vertical area on the screen where the mosaic processing is performed is specified by the start vertical position information VPS and the end vertical position information VPE. That is, the rectangular area A shown by hatching in FIG.
It is an area designated by 0 for executing the mosaic on the screen G.

Next, a television receiver provided with a mosaic processing circuit for receiving a television signal in which the above-mentioned mosaic control signal is multiplexed will be described. Figure 3
[Fig. 1] is a block diagram of an example of a television receiver having a mosaic processing circuit and a mosaic control signal extraction function. In the case of this example, the television receiving device 300 is an example in the case of a cable television receiving device.

The television receiver 300 includes a television signal input terminal 40a, a tuner decoder section 40,
Audio processing unit 41, video signal processing unit 42, mosaic processing circuit 43, mosaic control signal extraction circuit 50, logic circuit 6
0, a control signal generator 70, a remote controller commander 80, a remote controller signal receiver 81, and a remote controller signal decoder 82.

The television signal transmitted via the cable is supplied to the tuner / decoder section 40 through the input terminal 40a. In the tuner / decoder section 40, a television signal of a channel desired by a viewer is selected based on the channel selection signal supplied from the control signal generation section 70, and a video demodulator built in the tuner / decoder section 40, The audio demodulator demodulates the video signal and the audio signal.

The demodulated voice signal is processed by the voice signal processing unit 4
1 is supplied to the monitor receiver 400 and is converted into a form of an audio signal supplied to the monitor receiver 400 by the audio signal processing unit 41 and supplied to the monitor receiver 400.

On the other hand, the demodulated video signal is supplied to the video signal processing section 42. The video signal processing unit 42 uses Y / C
A separation circuit 421, a chroma decoder 422, a matrix circuit 423, a switching circuit 424, and a mosaic processing circuit 43 are provided.

The Y / C separation circuit 421 separates the supplied video signal into a luminance signal Y and a carrier color signal C, and the carrier color signal C is supplied to a chroma decoder 422. The chroma decoder 422 decodes the color difference signal RY and the color difference signal BY from the supplied carrier color signal C. Then, the luminance signal Y, the color difference signal RY, and the color difference signal BY are
It is supplied to the matrix circuit 423, and the three primary color signals R, G and B of red, green and blue are obtained from this matrix circuit 423. These three primary color signals R, G, B are sent to the switching circuit 4
24.

The three primary color signals R, G, B from the matrix circuit 423 are also supplied to the mosaic processing circuit 43. In this example, the mosaic processing circuit 43 includes a sampling hold circuit 431 and a sampling clock generation circuit 432, and the three primary color signals R, G, B are supplied to the sampling hold circuit 431.

From the sampling clock generation circuit 432, in this example, a sampling clock MSH having a frequency of several to ten times the horizontal frequency and synchronized with the horizontal synchronizing signal and the vertical synchronizing signal is obtained as described later.
This sampling clock MSH is supplied to the sampling and holding circuit 431, and the three primary color signals R, G, B are
Each is sampled and held. Then, the sampling hold output is supplied to the switching circuit 424. In the case of this example, the sampling hold output of the three primary color signals is obtained by rounding the data of one horizontal line to several to ten because the frequency of the sampling clock MSH has the above-mentioned value. Yes, and mosaic processing is performed by this.

The switching circuit 424 monitors which of the three primary color signals mosaiced as described above and the normal three primary color signals from the matrix circuit 423 is used by the monitor receiver 400.
Whether or not to supply the signal is switched based on a control signal CTL supplied from a logic circuit 60 described later.

The video signal demodulated by the tuner / decoder section 41 is also supplied to the sync separation circuit 44 and the gate circuit 52 of the mosaic control signal extraction circuit 50. The horizontal sync signal HD and the vertical sync signal VD extracted by the sync separation circuit 44 are supplied to the sampling clock generation circuit 432 of the mosaic processing circuit 43.

In the sampling clock generation circuit 432, a sampling clock MSH is generated as a clock synchronized with the horizontal synchronizing signal HD and the vertical synchronizing signal VD by, for example, a PLL circuit.

The mosaic control signal extraction circuit 50 includes a gate signal generation section 51, a gate section 52, a binarization processing section 53, a mosaic control signal decoding section 54, and an area signal generation circuit 5.
It is equipped with 5.

The vertical sync signal VD and the horizontal sync signal HD extracted by the sync separation circuit 44 are also supplied to the gate signal generation circuit 51 and the area signal generation circuit 55 of the mosaic control signal extraction circuit 50.

The gate signal generation circuit 51 generates a gate signal for extracting the mosaic control signal multiplexed in the predetermined horizontal scanning period of the vertical blanking period of the video signal shown in FIG. The generated gate signal is supplied to the gate circuit 5
2 and the mosaic control signal is extracted from the video signal from the tuner / decoder section 40 by the gate circuit 52. The extracted mosaic control signal is supplied to the binarization processing unit 53.

The binarization processing unit 53 binarizes the mosaic control signal and converts it into digital data. The mosaic control signal that has been binarized is supplied to the mosaic control signal decoding unit 54.

In the mosaic control signal decoding unit 54, the mosaic ON / OFF information SW, the start horizontal position information HPS which is the mosaic position data, the start vertical position information VPS,
The end horizontal position information HPE and the end vertical position information VPE are decoded. The decoded mosaic on / off information SW is supplied to the logic circuit 60, while the start horizontal position information HPS, the start vertical position information VPS, the end horizontal position information HPE, and the end vertical position information VPE are supplied to the area signal generation circuit. 55.

In the area signal generation circuit 55, the area signal SP for designating a predetermined area (see area A in FIG. 2) on the screen where the mosaic processing is to be performed, based on the position information supplied thereto.
C is generated and supplied to the sampling clock generation circuit 432.

The sampling clock generation circuit 432 is
The sampling clock signal MSH is generated and supplied to the sampling and holding circuit 431 only in the mosaic processing section designated by the area signal SPC. Therefore, the sampling and holding circuit 431 performs the mosaic processing only on the video signal in the section corresponding to the area designated by the area signal SPC.

In this example, when the multiplex information does not include the position information, or when there is no multiplex information, the area signal SPC designates the entire one screen, and the sampling clock generation circuit 432 outputs 1 area. The sampling clock MSH is generated over the entire screen section and is supplied to the sampling and holding circuit 431 so that the mosaic processing is performed on the entire screen. However, whether or not the mosaic screen is displayed depends on the switching state of the switching circuit 424.

For example, when the sampling hold circuit 431 mosaics the entire screen of the image shown in FIG. 4, the image shown in FIG. 5 is displayed, and the area signal SPC designates the lower 1/3 area of the screen. When the mosaic processing is performed, the image shown in FIG. 6 is displayed. By setting a plurality of rectangular areas for mosaic processing per screen, it is possible to execute the mosaic processing in a desired size and shape at any position on the screen by the area signal described above. .

The mosaic on / off information SW from the mosaic control signal decoding circuit 54 is supplied to the switching circuit 424 as the control signal CTL via the logic circuit 60, and the mosaic on / off information SW is "1". The scene section is switched to a state in which the three primary color signals from the sampling and holding circuit 431 are selected.

Therefore, the mosaic on / off information S
In the scene section in which W is "1", the video signal mosaiced in the entire screen or in the section designated by the area signal SPC is supplied to the monitor receiver 400, and the mosaiced image is displayed on the screen. Is displayed.

The logic circuit 60 is provided to allow the user to forcibly turn the mosaic processing on and off. That is, when the user performs an operation of designating the mosaic processing forcibly on, the logic circuit 60 forms and outputs the control signal CTL which causes the switching circuit 424 to select the three primary color signals from the sampling and holding circuit 431. That is, regardless of the state of the mosaic on / off information SW superimposed on the video signal, the switching circuit 424 changes the mosaic operation by the user forcibly turning on the mosaic processing.
The three primary color signals from the mosaic processing circuit 43 are forcibly selected.

At this time, if the mosaic control signal is not superimposed on the video signal, an image in which the mosaic processing has been performed on the entire one screen as described above is obtained. Also,
When the mosaic control signal including the position information is superimposed on the video signal, an image in which the area designated by the position information is mosaic-processed is obtained by the monitor receiver 400.

When the user performs an operation for designating the mosaic processing forcibly off, the logic circuit 60 causes the switching circuit 42 to operate.
A control signal CTL for setting 4 to a state of selecting the three primary color signals from the matrix circuit 423 is formed and output. Therefore, due to the forced turning off of the mosaic processing by the user, the mosaic processing is not executed regardless of the state of the mosaic on / off information SW superimposed on the video signal.

The forced on / off of the mosaic processing by the user as described above is performed by operating the remote control commander 80. For example, remote control commander 80
Although not shown, has three switches, a forced on button for mosaic processing, a forced off button, and an automatic button (or one button having a switching position corresponding to the above three buttons).

The automatic button is a switch for designating selection of a screen which has been mosaic-processed according to the mosaic control signal superimposed on the video signal.

Then, the user operates the remote control commander 8
When any of the forced on button 0, forced off button, and automatic button of 0 is pressed, a remote control signal corresponding to the pressed button is formed and output. This remote control signal is
It is received by the remote control signal receiving unit 81 and supplied to the remote control signal decoding unit 82. The remote control signal decoding unit 82 decodes the remote control signal and supplies the decoded signal to the control signal generating unit 70.

The control signal generator 70 forms a control signal to be supplied to the logic circuit 60 based on the decoded remote control signal and supplies the control signal to the logic circuit 60. Then, as described above, from the logic circuit 60 to the switching circuit 424.
A control signal CTL for controlling the is output, and the user is forced to turn on or off the mosaic processing.

Normally, the forced on / off / automatic state of the mosaic processing selected by the user is set to a state different from the current state by pressing the forced on button, forced off button, automatic button, or receiving the television signal. Holds until the device is turned off. Then, when the power of the television receiver is turned on, the mosaic processing is performed in accordance with the mosaic control signal to be in the automatic state.

The remote control commander 80 can perform operations such as turning on / off the power of the television receiver, selecting a channel, and adjusting the volume in addition to the forced on / off operation of the mosaic processing as described above. .

Next, the area signal generating circuit 55 described above.
The area signal SPC will be described with reference to FIGS. 7 and 8.

FIG. 7 is a block diagram of an example of the area signal generation circuit 55, and FIG. 8 is a waveform diagram for explaining the generation process of the area signal SPC.

The horizontal counter 501 obtains a count value CNT1 which is information indicating the pixel position in the horizontal direction. The clock from the clock generator 502 is supplied to its clock terminal, and the sync separation circuit 431 supplies the clock. The horizontal synchronizing signal HD (FIG. 8A) is supplied to the reset terminal.

The clock generator 502 is PL in this example.
A horizontal synchronizing signal HD is supplied to the L circuit, and a clock signal corresponding to each pixel in the horizontal direction of the screen of the monitor receiver 400 is synchronized with the horizontal synchronizing signal HD. It is supplied to the counter 501. Then, the information on the count value CNT1 of the horizontal counter 501 is supplied to the comparison circuits 504 and 505.

In the comparison circuit 504, the count value C
NT1 and the value stored in register 503 are compared. The register 503 has a mosaic control signal decoding unit 54.
The start horizontal position information HPS decoded by is stored and held.

In the comparison circuit 505, the count value CNT1 is compared with the value stored in the register 506. The register 506 stores the end horizontal position information HPE decoded by the mosaic control signal decoding unit 54.
Is stored and held.

When the count value CNT1 matches the start horizontal position information HPS held in the register 503, the comparison circuit 504 outputs a match output signal C1 (FIG. 8B), and the match output signal C1 is output from the flip-flop circuit 507. Supply to the set terminal S.

Further, the comparison circuit 505 determines that the count value CN
T1 is the end horizontal position information H held in the register 506.
When it matches with PE, a match output signal C2 (FIG. BC) is output, and this match output signal C2 is output to the flip-flop circuit 50.
7 to the reset terminal R.

Therefore, the flip-flop circuit 507
8D, a signal FFH that becomes "1" at the time of the coincidence output signal C1 and becomes "0" at the time of the coincidence output signal C2 is obtained. The signal FFH is a signal indicating a mosaic processing section in the horizontal direction. This signal FFH
Are supplied to the AND circuit 514.

On the other hand, the vertical counter 508 is for obtaining information indicating the line position in one screen, and the horizontal synchronizing signal HD extracted by the synchronizing separation circuit 431 is supplied to this vertical counter 508 as a clock signal. And the vertical sync signal VD extracted by the sync separation circuit 431.
(FIG. 8E) is supplied as the reset signal. Then, the information of the count value CNT2 of the vertical counter 508 is supplied to the comparison circuits 510 and 511.

In the comparison circuit 510, the count value C
NT2 is compared with the value stored in register 509. The register 509 includes a mosaic control signal decoding unit 54.
The start vertical position information VPS decoded by is stored and held.

Further, in the comparison circuit 511, the count value CNT2 is compared with the value stored in the register 512. This register 511 contains the end vertical position information VPE decoded by the mosaic control signal decoding unit 54.
Is stored and held.

The comparison circuit 510 starts the vertical position information VPS in which the count value CNT2 is stored in the register 509.
When they coincide with each other, a coincidence output signal C3 as shown in FIG. 8F is output. The coincidence output signal C3 is supplied to the set terminal S of the flip-flop circuit 513.

Further, the comparison circuit 511 includes a vertical counter 5
When the count value CNT2 of 08 matches the end vertical position information VPE of the register 512, a match output signal C4 as shown in FIG. 5G is output. This coincidence output signal C
4 is supplied to the reset terminal R of the flip-flop circuit 513.

Therefore, the flip-flop circuit 513
Then, as shown in FIG. 8H, a signal FFV indicating a vertical mosaic processing section which becomes “1” at the time of the coincidence output signal C3 and returns to “0” at the time of the coincidence output signal C4 is obtained. This signal FFV is supplied to the AND circuit 514.

The AND circuit 514 performs mosaic processing on the screen of the monitor receiver 400 as a logical product output of the signal FFH indicating the horizontal mosaic processing section and the signal FFV indicating the vertical mosaic processing section. Area signal SPC that becomes "1" only in the section of the area for
I) is generated.

As described above, the sampling clock generation circuit 432 forming the mosaic processing circuit 43 supplies the sampling clock MSH to the sampling hold circuit 431 only during the section in which the area signal SPC is "1". As a result, mosaic processing is performed on the video signal in the section where the area signal SPC is "1".

Thus, the position on the screen where the mosaic processing is executed is designated by the information in the mosaic control signal multiplexed with the television signal.

Next, the second embodiment will be described with reference to FIGS.
Will be described with reference to. The second embodiment described below requests a response from a viewer by a television program,
The viewer is, for example, a television receiver for interactive television broadcasting that responds to the broadcasting station side via a telephone line. Also in this example, as in the above-described example, the image non-display processing circuit is configured by a mosaic processing circuit, and the mosaic processing exactly the same as that described above is performed.

The interactive television broadcast of this example is an effective broadcasting method for programs such as quiz programs, television shopping, questionnaire surveys, television auctions, etc. that require a response from the viewer in real time with the broadcast of the television program. The receiver's telephone number and tail limit information for limiting the response, which is necessary for the response from the viewer via the telephone line, are multiplexed into the television signal and received by the television receiver. Is supplied to.

In the case of this example, the information about the above-mentioned interactive television program and the information for controlling the mosaic processing circuit of the television receiving apparatus of this example are DTMF (Dual Tone Multi) which is a signal in the audio band.
Frequency) signal is multiplexed with an audio signal and transmitted. Therefore, the television receiver of this example has a function of decoding the DTMF signal.

First, the DTMF signal will be described with reference to FIG.

[DTMF signal] The DTMF signal system is 1
One is an audio band signaling scheme in which two tones of a low frequency group (low group) and the other of a high frequency group (high group) are simultaneously sent. Each of these low and high frequency groups consists of tones of four audio band frequencies, no two of which are in articulatory relation.

In the DTMF signal, the four frequencies in the low group are, for example, 697 Hz, 770 Hz, 852 Hz, 941H.
z, and the four frequencies of the high group are, for example, 1209 Hz,
It is set to 1336 Hz, 1477 Hz, and 1633 Hz. Then, each of the low group and the high group is combined with one frequency, and each DTMF composed of the combination is combined.
Signals (each of these DTMF signals are hereinafter referred to as function signals) are assigned to push buttons "0" to "D" arranged in 4 rows and 4 columns, as shown in FIG.

In telephone communication, only 12 out of 16 functional signals of DTMF signals are generally used for subscriber address (telephone number) signals. That is,
"0" used as a so-called numeric keypad on the telephone
The function signals of the above 12 combinations correspond to the numbers "9" and the symbols "*" and "#". Figure 9
The function signals corresponding to the letters "A", "B", "C", and "D" indicated by broken lines in Fig. 3 are not generally used in Japan, but data using the push button (PB) dial. It is only used for transmission.

When a line is selected by a telephone number using such a DTMF signal, the signal transmission condition is as shown in FIG.
It is specified as shown in 0.

Due to the combination of the two frequencies and the transmission conditions as described above, the DTMF signal rarely occurs in the natural world and can be clearly distinguished from natural sound such as a human voice. It is possible to multiplex (mix) the broadcast audio signal and broadcast it, and separation on the receiving side is relatively easy.

By the way, the DTMF signal is also used in a multi-functional telephone, and by operating a push-button telephone from outside the house, the message recorded on the telephone at home can be played back, or the answering machine can be recorded. You can record, play back, and delete the message.

[Multiplexing Information] On the transmitting side of this embodiment, that is, on the broadcasting station side, when transmitting multiplexed information,
As described above, among the function signals which are not used for PB line selection and mean “A”, “B”, “C”, and “D”, the function signals of “A”, “B”, and “C” Is used as transmission start information of the multiplexing information, and the function signal of “D” is used as transmission end information.

Since there are three types of transmission start information, in this example, the multiplexed information can be transmitted by distinguishing into three types. In other words, the three types of multiplexed information are
Any of the function signals of “A”, “B”, and “C”,
It is broadcast by being separated from the function signal of "D".

For example, the information regarding the response access to the interactive program, such as the telephone number of the access destination (reception telephone number) and the transmission rate, is the transmission start information with the function signal "A" as the transmission start information. It is transmitted between a certain "D" function signal. Similarly, information regarding environment settings such as the end limit of the answering telephone number and the current time setting is the information regarding clearing of the received data between the function signal of "B" and the function signal of "D". Are multiplexed and broadcast as signals sandwiched between the "C" function signal and the "D" function signal.

On the receiving side, a numerical value sandwiched between any one of the function signals "A", "B", and "C" as the transmission start information and the function signal "D" as the transmission end information. The symbol data is regarded as a multiplexed data string (information group), and is separately stored in a predetermined storage area of the memory as described later.

For example, as information relating to response access, a reception telephone number 0990 is set for a receiver whose interactive television standard version is 00.
In the case of permitting access to −1234-1234 at the transmission rate of 300 bps, the multiplexing information is such that the data string formed by each functional signal of the DTMF signal such as 00 # 0990 * 1234 * 1234 is “A”. It is multiplexed with the main broadcast audio signal and transmitted in a state of being sandwiched between the function signal and the function signal of "D". Here, the first 00 in the data string is
The interactive television standard version indicates 00 (transmission rate 300 bps), and the numerical data after the symbol "#" is the reception telephone number.

In addition, for the receiver whose interactive television standard version is 01, the telephone number 0990-
In the case of permitting access to the 1234-1235 at a transmission rate of 1200 bps, the data string formed by the respective functional signals of the DTMF signal such as 01 # 0990 * 1234 * 1235 is "A" and "D". It is multiplexed with the main broadcast audio signal and sent out in a state of being sandwiched between the function signal of "." Here, the first 01 in the data string is
The interactive television standard version indicates 01 (transmission rate 1200 bps), and the numerical data after the symbol "#" is the reception telephone number.

In the data string relating to the response access as described above, the symbol "#" represents a separator (separation of individual data) and the symbol "*" represents a pause.

As information relating to environment setting, when access is restricted to only viewers having a specific telephone number (subscriber number), for example, when access is permitted only to the numbers ending with 0, 0 When the data string composed of each function signal of the DTMF signal such as # 0 permits access to only the number with the telephone number ending with 1, the each function signal of the DTMF signal such as 0 # 1 The composed data strings are respectively multiplexed with the main broadcast audio signal and transmitted while being sandwiched between the "B" function signal and the "D" function signal. In this case, the number “0” before the symbol “#” means that access is permitted from a telephone number having the number next to the symbol “#” as the end.

Further, when permitting access only to numbers having an even number at the end of the telephone number, each function signal of the DTMF signal such as 0 # 0 * 0 # 2 * 0 # 4 * 0 # 6 * 0 # 8 is used. The composed data string is multiplexed with the main broadcast audio signal and sent in a state of being sandwiched between the "B" function signal and the "D" function signal. Here, the symbol "*" means a logical sum.

As information relating to the clearing of the received data, for example, in the case of clearing the number restriction, the data string composed of each functional signal of the DTMF signal such as 99 # 0 is the functional signal of "C". When the reception telephone number is cleared, it is sandwiched between the function signal of “D” and transmitted, and in the case of clearing the reception telephone number, the data string composed of each function signal of the DTMF signal such as 99 # 1 becomes “C It is sent by being sandwiched between the function signal of "" and the function signal of "D".

As described above, the function signals of "A", "B", "C", and "D" which are not used as the selection signal of the telephone line are transmitted to the transmission start information and the transmission end information of the multiplexing information. Thus, even if the DTMF sound is transmitted, for example, in a scene where a telephone call is made in a drama, it is not confused with the program-related information. Also, the multiplexed information can be transmitted and received with certainty.

Next, on the television receiver side,
The mosaic control information transmitted as a DTMF signal in order to perform mosaic processing on a video scene previously picked up on the broadcasting station side will be described.

The mosaic on / off information is transmitted to the main broadcast audio signal in a state where a data string such as 44 # 0 44 # 1 is sandwiched between the "B" function signal and the "D" function signal. It is multiplexed and transmitted. The first "44" in this data string
The information that follows is the mosaic on / off information SW
And “0” or “1” after “#” represents the mosaic on / off information SW itself.

When only a predetermined part on the screen is mosaiced, the position information of the mosaic control information is 33 # 00 # 0100 33 # 01 # 0300 33 # 10 # 0250 33 # 11 # 0350. Such a data string composed of each function signal of the DTMF signal is multiplexed with the main broadcast audio signal and sent out while being sandwiched between the function signal of “B” and the function signal of “D”. It

In the above data string, the first "33"
Indicates that the information that follows is position information for mosaic processing. “00” after “#” indicates that the information that follows is horizontal start position information HPS,
“01” indicates that it is the horizontal end position information HPE. Similarly, “10” indicates that the subsequent information is vertical start position information VPS, and “11” indicates that it is vertical end position information VPE.

The last four digits of each data string are the information HP
This is information on specific values of S, HPE, VPS, and VPE. As a result, as described above with reference to FIG. 2, the rectangular area A on which the mosaic processing is executed can be designated.

Further, in this example, in the quiz program, the answers displayed on the screen can be mosaic-processed, and the mosaic processing is turned on only for the viewer who wants to think together with the respondents who appear in the quiz program. be able to. In the case of such a quiz program, a data string composed of each function signal of the DTMF signal, such as 22 # 10 22 # 01, is between the "B" function signal and the "D" function signal. It is multiplexed with the main broadcast audio signal and transmitted in the state of being sandwiched between.

In the above data string, the first "22"
Indicates that it is a quiz program attached to the answer, and “10” after “#” is information for turning the initial state of on / off of the mosaic processing into the off state. At this time, the answer of the quiz is displayed on the screen by the video and audio in the quiz program, but the viewer who wants to think about the quiz without looking at the answer should use the remote control transmitter to forcibly turn on the mosaic processing. Be prompted.

If "01" follows "#",
This information is for turning on / off the initial state of mosaic processing. At this time, the answer of the quiz is displayed on the screen by the video and audio in the quiz program, but since the mosaic processing is performed, the viewer who wants to see the answer uses the remote control transmitter to forcibly turn off the mosaic processing. Be prompted by.

In the case of a bidirectional quiz program, the mosaic processing of the answer portion is forcibly turned on by the multiplexed signal regardless of the user's forcible off operation. In this case, the main stream in the state where the data string composed of each function signal of the DTMF signal such as 22 # 00 is sandwiched between the function signal of “B” and the function signal of “D”. The audio signal is multiplexed and transmitted.

In the data string of this example, "22" is
As described above, it is indicated that the program is a quiz program accompanied by an answer, and "00" after "#" is information that prevents the mosaic processing for the answer from being canceled even when the user turns off the mosaic forcibly. .

When the time limit for answering is exceeded or when the CPU 21 recognizes that the answer has already been transmitted, the mosaic processing can be canceled by the viewer's remote control operation. You may do it.

In the case of designating an area to be mosaic-processed in the quiz program attached to the answer, 22 # 00 # 00 # 0100 22 # 00 # 01 # 0300 22 # 00 # 10 # 0250 22 # 00 # 11 # 0350. As described above, the data string composed of each function signal of the DTMF signal is sandwiched between the function signal of "B" and the function signal of "D" and transmitted. In this example, as described above, “22 # 00” is the information for forcibly turning on the mosaic processing of the answer part in the answer attached quiz program. "00", "01", "10", and "11" that follow are information on the start position in the horizontal direction, information on the end position in the horizontal direction, information on the start position in the vertical direction, and end position in the vertical direction. It indicates that the information is the information of 4 digits after each data string, “0100”,
“0300”, “0250”, and “0350” are information indicating start horizontal position information HPS, end horizontal position information HPE, start vertical position information VPS, and end vertical position information VPE, which are specific position information.

[Structure of Receiving Apparatus] Next, FIGS.
An embodiment in which the television receiver according to the present invention is applied to a television receiver compatible with a bidirectional broadcast program will be described with reference to FIG.

FIG. 11 shows the configuration of an embodiment of the television receiver of this example. In FIG. 11, 10 is a signal system of the television receiver, and 20 is a control system thereof.

Broadcast radio waves received by the antenna 1 are supplied to the tuner 11. A channel selection signal is supplied from the control system 20 to the tuner 11, and a broadcast signal of a desired channel is selected by the tuner 11 and converted into an intermediate frequency signal. This intermediate frequency signal is supplied to the intermediate frequency circuit 12. The intermediate frequency circuit 12 includes a video demodulator 13 and an audio demodulator 14, and demodulates a video signal and an audio signal.

The video signal S13 from the video demodulator 13 is supplied to the picture tube 16 via the video signal processing circuit 15.
The video signal circuit 15 corresponds to the video signal processing unit 42 of FIG. 3, and also includes a mosaic processing circuit 43 and a switching circuit 424.

Audio signal S14 from the voice demodulator 14
Is supplied to the audio multiplex decoder 17, and the bilingual signal or the stereo signals SL and SR are decoded. Then, these signals SL and SR are respectively the amplifiers 18L and 1L.
It is supplied to the left and right speakers 19L and 19R through 8R.

Audio signal S14 from the voice demodulator 14
Is also transmitted via the pre-processing circuit 31 to the DTMF decoder 3
2 is supplied. The DTMF decoder 32 constantly searches the DTMF signal in the input signal, and when detecting the DTMF signal, decodes which function signal the DTMF signal is. That is, the numbers "0" to "9", "#", "*", and "A" to "D" are decoded. Then, the decoded data is supplied to the control system 20.

The preprocessing circuit 31 and the DTMF decoder 3
The processing of No. 2 corresponds to the processing of the mosaic control signal extraction circuit 50 of FIG. 3 described above in the first embodiment. And the control system 2
The mosaic on / off information SW processed by the program executed by the CPU 21 of 0 and the horizontal start position information HP as the screen position information for executing the mosaic process.
S, horizontal end position information HPE, vertical start position information VP
The S and vertical end position information VPE are decoded, and the position information is supplied to the area signal generation circuit 27 via the I / O port 261. Then, in the area signal generation circuit 27, the area signal SPC indicating the area in which the mosaic processing is executed is generated in the same manner as in the above-described example, and is supplied to the mosaic processing circuit of the video signal processing unit 15 to execute the mosaic processing.

Further, the decoded mosaic on / off information is sent through the I / O port 261 to the switching circuit 42 for the three primary color signals R, G and B incorporated in the video signal processing section 15.
4 (not shown) to control switching. As in the first embodiment, by operating the remote control commander 34, the viewer can control the mosaic processing on / off.

In the case of this example, the DTMF decoder 32
For this, a commercially available DTMF decoder which is widely used is used. The pre-processing circuit 31 is provided to perform pre-processing so that the DTMF signal can be decoded with higher accuracy even when a commercially available DTMF decoder is used as the DTMF decoder 32. That is, the preprocessing circuit 31 removes frequency components other than the DTMF signal from the audio signal S14,
The input signal of the F decoder 32 is a signal that a commercially available DTMF decoder allows, and is composed of a filter circuit.

Further, in this embodiment, a modem (modulator / demodulator) 33 for data communication is provided in order to respond to a bidirectional broadcast program such as a response to a viewer participation type program. The telephone line 2 is connected to the line connection terminal Line of the modem 33, and the telephone 3 is connected to the telephone terminal Tel. The modem 33 is connected to the system bus 200 of the control system 20. Further, the data from the modem 33 is supplied to the DTMF decoder 32 so that the DTMF signal sent through the telephone line 2 can be decoded by the DTMF decoder 32 and taken into the control system 20. Has been done.

The control system 20 includes a CPU 21 and a ROM 22.
, DRAM 23, SRAM 24, video RAM 2
5 and each of which is connected to the system bus 200. The ROM 22 stores various control programs as well as a DTMF data reception and reception processing program described later, and also stores font and graphic data used for display. The DRAM 23 is mainly used as a work area for calculation, and the SRAM 24 stores setting information and ID information of the receiving device itself.

The video RAM 25 is used for display. A display controller 25C is provided for the video RAM 25. The display controller 25C controls reading and writing of video data to and from the video RAM 25, and converts the read video data into an analog video signal. Then, the analog video signal obtained from the display controller 25C is supplied to the video signal processing unit 15,
Together with the control of the video signal processing unit 15 from the control unit 20, the video signal is superimposed on the video signal from the intermediate frequency circuit 12 or is switched and combined.

The control system 20 also has an I / O port 261.
The control signal is supplied to the video signal processing circuit 15 and the audio multiplex decoder 17 through. Also, the remote control commander 34
For example, the infrared remote control signal from the remote control receiver 3
5, the received remote control signal is decoded by the remote control decoding circuit 36, and the decoded remote control signal is taken into the control system 20 from the I / O port 261.

The CPU 21 controls the remote control commander 34 according to the user's operation according to the program in the ROM 22. On the remote control commander 34, mosaic forced on / off operation by the user and selection of the automatic mode can be performed by the user. Further, for example, in the case of remote control operation such as tuning and volume control, tuner tuning and volume control are executed, and at the same time, font data for displaying necessary characters and symbols is read from the ROM 22 and the video data is read. It is transferred to the RAM 25. Then, the data of the video RAM 25 is supplied to the video signal processing circuit 15 and is combined (for example, superimposed) with the video signal S13 so that it is displayed on the screen of the picture tube 16 for an appropriate time.

Data for tuning and volume control are
When each operation is written in the nonvolatile SRAM 24, when the power is turned off and then turned on again, a so-called last memory function is realized in which the same channel is auditioned at the same volume as immediately before the power is turned off. .

A tuning signal is supplied to the tuner 11 through the I / O port 263. Also, in this example,
Time data from the timer circuit 37 for notifying the real time or generating an interrupt at a predetermined time is input to the control system 20 through the I / O port 264.

[Multiplexed Information Reception Processing] Next, with reference to FIGS. 12 and 13, the multiplexed information reception processing of the embodiment of FIG. 11 will be described.

When the power of the television receiver is on, the preprocessing circuit 31 and the DTMF decoder 32 are used to constantly output the DTMF signal mixed with the audio signal of the program of the currently selected channel. Monitor. That is, the CPU 21 constantly searches the output of the DTMF decoder 32 through the I / O port 262 or at a predetermined cycle (step 101), and the DTMF signal is mixed with the audio signal S14 of the broadcast program which is currently being received. When this is detected (step 102), the decoded output D32 of the DTMF signal is taken in as the number or symbol as described above (step 103).

At this time, the transmission condition as described above, that is, whether the length of the DTMF signal continuing is 50 msec or more, or D
It is checked whether the pause time from the disappearance of the TMF signal to the rise of the next signal is 30 msec or longer, or whether the sum of the length of the DTMF signal and the pause time is 120 msec or more, which is a specified value.
It is checked whether it is an F signal (step 104). As a result, it is possible to prevent the reception of error data when the reception condition of the broadcast radio wave is poor, and it is possible to add D
It is possible to prevent erroneous reception when the same frequency component as the TMF signal is included.

At step 104, the received data is D
If it is determined that the signal is not the TMF signal, the process proceeds to step 105 to clear the temporary storage area of the DRAM 23, initialize the save pointer, and then return to step 101 to continue the output check of the DTMF decoder 32.

If it is determined that the received data is the DTMF signal, the process proceeds to step 106 and it is checked whether the save pointer address is within the temporary storage area. If the save pointer address is not within the range of the temporary storage area, it means that the status is immediately after power-on or an error status.
In step 7, the address of the temporary storage area is initialized in the save pointer for the purpose of resetting. As a result, it is possible to prevent data from being written to the DRAM 23 and causing malfunction or software runaway while the address indicated by the save pointer remains undefined.

When it is determined in step 106 that the pointer address is within the range of the temporary storage area, and after the pointer is initialized to the address of the temporary storage area in step 107, the process proceeds to step 108 and the received data is 0 "
It is discriminated whether the data are numbers up to "9" or symbol data such as "#" and "*". When it is determined that these are numerical values or symbols, the routine proceeds from step 108 to step 109, and it is checked whether or not there is a free space in the temporary storage area.

Then, if the received data is these numerical or symbol data and there is a vacancy in the temporary storage area,
That is, when the pointer points within the range of the temporary storage area, the process proceeds to step 110 and the received data (“0” to
"9", "#", "*") are stored. Then, after that, the process proceeds to step 111 and the pointer is updated by one character. Then, the process returns to step 101 and the reception check of the DTMF signal is continued.

If it is determined in step 109 that there is no free space in the temporary storage area, a reception error has occurred.
In step 112, the temporary storage area is cleared, and the address of the temporary storage area is initialized to the pointer.

If the received data in step 108 is not a numerical value or symbol data such as "0" to "9", "#", "*", it corresponds to the above-mentioned four function signals. Character data "A", "B", "C", "D"
, Which is one of the above, the routine 1 of the section storage of FIG.
Enter 20. This routine 120 has the contents shown in FIG. 13. First, in step 121, the head address of the temporary storage area is set in the pointer. Next, in steps 122, 123, and 124, the received data is "A",
Which of the three function signals "B" and "C" is sequentially checked.

When it is determined in step 122 that the received data is the function signal of "A", step 1
In step 25, "A" is set to the address indicated by the pointer. When it is determined in step 123 that the received data is the function signal of "B", the process proceeds to step 126 and "B" is set to the address indicated by the pointer. Further, when it is determined in step 124 that the received data is the function signal of "C", the process proceeds to step 127 and "C" is set to the address indicated by the pointer.

Then, these steps 125, 126,
After 127, go to step 111 and move the pointer to 1
Update only the characters. Then, the process returns to step 101 and the reception check of the DTMF signal is continued.

In steps 122 to 124 described above,
If it is judged that it is not one of the three function signals of "A", "B", and "C", it is judged that it is the function signal of the remaining character "D", and it is stored in the temporary storage area up to this point. The processed data is processed as one data string (information group).

That is, on the broadcast side, when transmitting the DTMF signal, "A", "B", "C" are used as the transmission start signals.
Since any of the function signals of
As a result of ~ 127, at the head of the temporary storage area, "A",
Either "B" or "C" is stored. Therefore,
In the next step 128, it is determined whether the head of the temporary storage area is the character data of "A", "B", or "C".

If the result of this determination is that the head of the temporary storage area is "A", the flow proceeds to step 129 and the data string from the head of the temporary storage area to the last portion indicated by the pointer is stored in the corresponding storage area Ga. Save to. If the head of the temporary storage area is "B", the process proceeds to step 130, and the data string from the head of the temporary storage area to the last portion indicated by the pointer is stored in the corresponding storage area Gb. Further, if the head of the temporary storage area is "C", the process proceeds to step 131, and the data string from the head of the temporary storage area to the last portion indicated by the pointer is stored in the corresponding storage area Gc. These storage areas Ga, Gb, Gc are set to D as described later.
It is set in the RAM 23 or the SRAM 24.

Then, in step 132, the received data string is evaluated and analyzed, and the storage areas Ga, G
If the information stored in b or Gc is a command that needs to be executed at the time of reception, processing corresponding to the command, for example, clearing some or all of the received information, or to the timer at the current time Settings, menu display selection processing, etc. After that, the process returns to step 101 to continue the reception check.

As described above, in the multiplex data receiving process of this embodiment, while constantly monitoring the audio signal of the broadcast program, the character data "A" and "D" corresponding to the function signal of the DTMF signal, "B" and "D", "C" and "D"
The data string sandwiched between the function signals of is regarded as one piece of information,
The information is automatically stored in the separate storage areas Ga, Gb, and Gc according to the types of information as described above. Thus, in this embodiment, the received information can be classified and stored.

For example, if the start end is a function signal of "A", the information regarding the response access to the interactive program is as follows.
The data string is saved in the storage area Ga. If the start end is a function signal of "B", it is stored in the storage area Gb as information related to environment setting. Then, if the start end is a function signal of "C", it is stored in the storage area Gc as information regarding clearing of the received data.

Temporary information corresponding to interactive programs, such as information related to response access, may be cleared when the number clear signal is received. Considering the possibility that the channel may be switched when the clear signal is received,
It is desirable that the old number be cleared when the power is turned off. Therefore, the information regarding the response access may be stored in the DRAM 23 as it is. That is,
The storage area Da may be set on the DRAM 23.

On the other hand, the information relating to the environment setting includes time information for the reception reservation and the recording reservation of the broadcast program as described above, and the time information of the reserved program is
For example, it needs to be stored for a relatively long period, such as over a week. Therefore, it is better to transfer these pieces of information to the nonvolatile SRAM 24.

Therefore, in this embodiment, the storage area G
a, Gb, and Gc are stored on the volatile DRAM 23 or the non-volatile SRAM 24 depending on the nature of the data to be stored, that is, whether they need to be stored for a long time or can be erased when the power is turned off. Is set.

Then, in the response processing as described later, of the simple interactive television which uses a general telephone line for transmitting the upstream information to the center station, the destination stored in the storage area Ga of the DRAM 23 is stored. Necessary information such as telephone numbers and communication conditions can be automatically read and used.

The mosaic control information from the broadcasting station side is multiplexed in the vertical blanking period of the video signal in the first embodiment, and is multiplexed as the DTMF signal in the audio signal in the second embodiment. However, in addition to this, it is also possible to use a sub-audio signal of audio multiplex broadcasting for carrying data, or to use a signal dedicated to carrying data in a band completely different from video signals and audio signals. is there.

Further, in both the first and second embodiments,
The television receiver has a mosaic processing circuit built-in, and even if the television signal does not have the information on the mosaic processing multiplexed, the viewer operates the remote control commander so that the predetermined Mosaic processing can be performed on the part. In this case, the mosaic processing area is the upper half, lower half, right half, left half of the screen, or the upper right part, upper left part, lower right part, lower left part when the screen is divided into four parts vertically and horizontally. It is also possible to specify such switching as described above, or to allow the user to specify a rectangular area or an arbitrary polygonal area.

In the above embodiments, the mosaic processing circuit is used as the image non-display processing circuit. However, since it is not necessary to reproduce the image correctly, the designated entire screen or partial image area is displayed in one color. Alternatively, it is possible to display with noise, and it is possible to use a processing circuit that prevents other various images from being reproduced correctly.

Furthermore, when performing the non-display processing on the entire screen as described above, a character display indicating that the non-display processing is being performed is displayed to call the attention of the viewer and misunderstand that the receiving device is out of order. There can be no.

[0141]

As described above, according to the present invention, the image non-display processing circuit of the television receiver does not correctly reproduce and display the scene section previously picked up by the broadcasting station. Information
It is multiplexed with the television signal and transmitted. For this reason, a video scene picked up by the broadcasting station without being noticed by the viewer, for example, a video scene that you do not want to show to an infant,
For example, mosaic processing or the like is performed by the television receiver and provided. In this case, since processing such as mosaic processing is performed immediately when a scene that the infant does not want to show starts, it is not necessary for the viewer to consciously turn off the power of the television receiver or change the channel.

Further, since only the necessary scene section is surely prevented from correctly reproducing and displaying the image, the viewer himself does not need to turn off the power of the television receiver or change the channel, and depending on the television program. You won't miss the information provided or lose track of the story of the show.

Further, since the image non-display processing for not correctly reproducing and displaying the image such as the mosaic processing is executed on the television receiving side, whether the viewer displays the image non-display processed screen. It is also possible to control whether or not to watch with or without the infant.
Alternatively, the operation / non-operation of the image non-display processing can be controlled according to the viewer's preference.

In a quiz program or the like, when an answer is displayed on the screen, the viewer can make a selection so that the process of hiding the displayed part of the answer can be turned on or off. It is possible to realize a TV broadcast program such as a quiz program that has not been available in the past by taking advantage of the above.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an example of multiplexing information regarding mosaic processing in an embodiment of a broadcasting system according to the present invention.

FIG. 2 is a diagram for explaining mosaic position information of information related to mosaic processing in the embodiment of the broadcasting system according to the present invention.

FIG. 3 is a block diagram showing a configuration of an embodiment of a television receiving apparatus according to the present invention.

FIG. 4 is a diagram showing an example of an image on which mosaic processing has not been performed.

FIG. 5 is a diagram showing an example of an image in which the entire screen is mosaic-processed according to an embodiment of the present invention.

FIG. 6 is a diagram showing an example of an image in which the lower third of the screen is mosaic-processed according to the embodiment of the present invention.

FIG. 7 is a block diagram for explaining an example of an area signal generation circuit of an embodiment of the television receiver according to the present invention.

FIG. 8 is a waveform diagram for explaining the area signal generation circuit of the example of FIG.

FIG. 9 is a diagram for explaining a DTMF signal.

FIG. 10 is a diagram for explaining transmission conditions of a DTMF signal.

FIG. 11 is a block diagram showing the configuration of another embodiment of the television receiving apparatus according to the present invention.

FIG. 12 is a flowchart for explaining an overall operation of receiving multiplexed information by a DTMF signal according to the embodiment of FIG.

13 is a partial flowchart of the flowchart of FIG.

[Explanation of symbols]

 40 Tuner / Decoder Section 41 Audio Signal Processing Section 42 Video Signal Processing Section 424 Switching Circuit 43 Mosaic Processing Circuit 431 Sampling Hold Circuit 432 Sampling Clock Generation Circuit 44 Sync Separation Circuit 50 Mosaic Control Signal Extraction Circuit 51 Gate Signal Generation Section 52 Gate Circuit 53 Binarization processing unit 54 Mosaic control signal decoding unit 55 Area signal generation circuit 60 Logic circuit 70 Control signal generation unit 80 Remote control commander

Claims (7)

[Claims] 1. A television receiver is provided with an image non-display processing circuit for preventing an image from being reproduced and displayed correctly.
A broadcasting system of a television signal for multiplexing information for designating an image section in which the above-mentioned image should not be reproduced and displayed correctly and broadcasting it. 2. Information to be multiplexed into a television signal,
Position information for designating a partial area in one screen is added, and the television receiver displays the image correctly by the image non-display processing circuit only in the image area determined by the position information. The television signal broadcasting system according to claim 1, wherein the television signal broadcasting system is controlled so as to execute processing that does not cause the processing. 3. The television signal broadcasting system according to claim 1, wherein the image non-display processing circuit is a mosaic processing circuit. 4. An image non-display processing circuit for preventing an image from being correctly reproduced and displayed, an extracting means for extracting specific section specifying information for specifying a specific image section multiplexed in a television signal, and the extracting means. A television receiving device comprising: control means for controlling whether or not to display the image processed by the image non-display processing circuit based on the specific section designation information extracted by. 5. The television receiving apparatus according to claim 4, wherein the control means is controllable based on an operation input by a user. 6. The information multiplexed into the television signal includes position information for designating a partial area in one screen, and the extracted position information is stored in the extraction means. Decoding means is provided for decoding the extracted position information as well as the extracted position information, and processing for not correctly reproducing and displaying the image only in a partial area on the screen designated by the position information decoded by the decoding means. The television receiving apparatus according to claim 4 or 5, which is adapted to perform. 7. The television receiver according to claim 4, 5 or 6, wherein said image non-display processing circuit is a mosaic processing circuit.