JP2000278662A - Program output control method and television receiver using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To limit an access to a program on the basis of data for limiting a program output superimposed on respective programs as a plurality of screen images with a simple configuration. SOLUTION: In this program output control method, a signal changeover section 41 sequentially selects either of two program signals, a decoder section 42 extracts program output limit data superimposed on programs, and a control section 60 compares the data with a desired limit level. The control section 60 generates signals COA, COB on the basis of the comparison result and gives them to processing sections 13, 23 and an amplifier section 16 to stop supply of a program signal of a program whose output is discriminated to be limited to a display processing section 31 and an audio output section 17. The display processing section 31 displays a program whose output limit is not discriminated on a display section 34 as a main screen image and a program whose output limit is discriminated is displayed as a sub screen image to limit the program output.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program output control method and a television device using the same. Specifically, when displaying and viewing a plurality of programs on one screen, the program output restriction data superimposed on the program is sequentially compared with a desired restriction level, and the program output restriction data is compared based on the comparison result. By controlling the output of the program on which the program is superimposed, even when a plurality of programs are displayed on one screen, the output of each program is controlled according to the program output restriction data superimposed on the program. Restrict.

[0002]

2. Description of the Related Art Conventionally, text multiplex broadcasting called closed caption has been performed in the United States. This closed caption encodes alphanumeric characters and symbols, as well as the 21
The subtitle is superimposed on the screen superimposed on the second scanning line (21H). In addition, closed captions provide extended data services (Extended Data Services).
ta Service), the data is superimposed on the 21st scanning line (284H) of the second field, and information related to the program, for example, information such as the title and length of the program, and the type of the program is transmitted to the viewer. It has been made available. Further, in the extended data service, evaluation information for restricting access (referred to as V-CHIP in the United States) is provided for contents that are likely to adversely affect children and the like. ing.

Here, in order to restrict viewing of a violent scene or the like using information for program output restriction (evaluation information) superimposed on a program, a restriction level for restricting output is set, and evaluation information is set. Is determined to be equal to or higher than the set restriction level (hereinafter referred to as “set evaluation level”), that is, when it is determined that there is a concern that the adverse effect is large, the output of the program, that is, the access is restricted to perform video or audio Is prohibited, and when the level of the evaluation information becomes lower than the set evaluation level, the access restriction is released and video and audio are output.

[0004] The program output restriction data (hereinafter referred to as "evaluation information data") includes 3-bit program evaluation information,
It is composed of bit parity, 3-bit information such as program guide, and 1-bit data indicating whether the data is valid or not. Here, the 3-bit program evaluation information is classified, for example, as shown in FIG. 19 in a movie or the like, and a bit “001” is assigned to a rating of “general direction”. In addition, a bit “010” is assigned to a rating of “12 or younger and a parent is required”.
In addition, assignments are made according to other ages.

[0005]

By the way, in a conventional television device which can simultaneously display two images on a main screen and a sub-screen having a small display size, access restriction is performed only on the main screen. If access restriction is also performed on the screen, a circuit for determining the evaluation information superimposed on the video signal for displaying the video of the sub-screen and performing access restriction is required, which increases the cost of the television device. Would.

Therefore, according to the present invention, a program capable of controlling the output of a program with a simple configuration based on the program output restriction data superimposed on the program for each program output as a plurality of screens. An output control method and a television device using the same are provided.

[0007]

According to a program output control method of the present invention, when a plurality of programs are displayed on a single screen and viewed, program output restriction data superimposed on the programs is sequentially desired. And controls the output of the program on which the program output restriction data is superimposed based on the comparison result.

[0008] Further, the television apparatus is provided with a signal supply means for supplying a signal of a program, a signal switching means for switching and selecting a plurality of program signals supplied from the signal supply means, and the signal switching means. Decoding means for obtaining output limiting data from the signal, screen display processing means for generating a signal for multiple screen display using signals of a plurality of programs supplied from the signal supply means, Video output means for outputting video based on the received signal, audio output means for outputting audio based on the signal of the program supplied from the signal supply means, and control of supply of the program signal to the screen display processing means. A signal supply control means for controlling the supply of a program signal to the audio output means, and a comparison between the output restriction data obtained by the decoding means and a desired restriction level. The control means controls the signal supply control means based on the result and controls the switching operation of the signal switching means. The control means controls the signal switching means to sequentially select signals of a plurality of programs, and decodes the signals. The output limiting data obtained by the means is compared with the desired limiting level to determine whether to output the video or audio of the program, and the signal supply control means is controlled based on the comparison result to control the signal supply control means. It controls the output of video and audio based on the supplied signals of a plurality of programs.

The audio output means outputs audio of the program selected by the audio selection means. The audio output means outputs audio of the program selected by the audio selection means. When it is no longer determined to limit the output of the program based on the comparison result of the program output restriction data superimposed on the program whose output is restricted and the desired restriction level, the output is controlled by controlling the audio selecting means. Then, the sound of the program that is no longer determined is selected.

According to the present invention, when the display area on one screen is a two-screen display consisting of a main screen and a sub-screen having a smaller display size than the main screen, or when two display screens of the same display size are provided. When it is determined that the output of the program is to be restricted based on the result of comparison between the program output restriction data superimposed on the program and a desired restriction level when the display is a two-screen display, it is determined that the output is restricted. Programs that have not been displayed are displayed on the main screen having a large display size, and the output of a program determined to be restricted is restricted on the sub-screen.

In addition, when it is determined that the output of the program on the sub-screen is to be restricted while moving to the sub-screen and the output of the program is restricted, the program is not displayed on the main screen and the sub-screen. The program that has been replaced and no longer determined to have its output restricted is output on the original main screen side.

Further, when the output of the program is restricted and the dual-screen display composed of two screens of the same display size is switched to the dual-screen display composed of the main screen and the sub-screen, the main screen side and the sub-screen side are switched. If it is no longer determined to restrict the output for the program, the program is returned to the dual screen display consisting of two screens of the same display size, and the program is output.

When the sound of the program to be output is selectable, if it is no longer determined that the output of the program is to be restricted, the sound of the program that is no longer determined to be restricted to the output is automatically selected. Is output.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of a television apparatus according to the present invention will be described with reference to the drawings. The broadcast wave received by the antenna 10 shown in FIG. 1 is supplied to the tuners 11 and 21. The tuner 11 selects a broadcast wave signal based on a tuning control signal TCa from the control unit 60 described later to generate an intermediate frequency signal, and amplifies and detects the intermediate frequency signal by the video intermediate frequency processing unit 12. . The video signal SVa obtained by the video intermediate frequency processing unit 12 is supplied to the color reproduction / synchronization processing unit 13, the audio intermediate frequency processing unit 15, and the terminal 41 of the signal switching unit 41.
Supplied to the a side. In the tuner 21, the control unit 60
, A broadcast wave signal based on the channel selection control signal TCb is selected to generate an intermediate frequency signal, and the intermediate frequency signal is amplified and detected by the video intermediate frequency processing unit 22 to generate a video signal SVb. This generated video signal SVb
Is the terminal 4 of the color reproduction / synchronization processing unit 23 and the signal switching unit 41
It is supplied to 1b side.

The color reproduction / synchronization processing sections 13 and 23 generate a luminance signal and a color difference signal from the supplied video signals SVa and SVb, respectively. The luminance signal and the color difference signal are supplied to the two-screen display processing unit 31. Note that the color reproduction / synchronization processing units 13 and 23 also generate synchronization signals, and based on the generated synchronization signals, the two-screen display processing unit 31 and the display unit 3.
Operation 4 is performed. Further, the color reproduction / synchronization processing unit 13
Then, based on the output control signal COA from the control unit 60, the supply of the luminance signal and the color difference signal to the two-screen display processing unit 31 is controlled, and the color reproduction / synchronization processing unit 23
Based on the output control signal COB from the control unit 60, the supply of a luminance signal and a color difference signal to the two-screen display processing unit 31 is controlled.

The two-screen display processing unit 31 uses the luminance signal, the color difference signal, and the synchronization signal supplied from the color reproduction / synchronization processing units 13 and 23, based on the display switching control signal CMS from the control unit 60, and performs two-screen display processing. For example, a luminance signal and a color difference signal for two-screen display in which a sub-screen having a small display size is displayed on a main screen or a screen of the same size is displayed as a left screen and a right screen are generated. The luminance signal and the color difference signal are amplified by the image
3 is supplied.

In the display superimposing section 33, the two-screen display processing section 3
The matrix processing is performed using the luminance signal and the color difference signal supplied from 1 and an on-screen signal Sdp supplied from a display control unit 64 described later is superimposed to generate a display drive signal. By supplying the display drive signal to the display unit 34, a desired program is displayed on the screen of the display unit 34 on the main screen, the sub screen, or the left and right two screens.

The audio intermediate frequency processing section 15 detects the video signal SVa from the video intermediate frequency processing section 12 to generate and amplify an audio intermediate frequency signal, and further detects the audio intermediate frequency signal to extract an audio signal. . The audio signal is amplified by the audio amplifier 16 and supplied to the audio output unit 17 configured using a speaker or the like, so that the audio is output from the audio output unit 17. In the audio amplifier 16, the output control signal CO supplied from the controller 60 is output.
A controls the supply of the audio signal to the audio output unit 17.

The movable terminal 41c of the signal switching section 41 is connected to the decoder section 42. In the signal switching section 41, based on the switching control signal CS from the control section 60, the video signal SVa or the video signal SVa from the video intermediate frequency processing section 12 is output. One of the video signals SVb from the video intermediate frequency processing unit 22 is selected and supplied to the decoder unit 42.

The decoder section 42 separates the signal indicating the evaluation information superimposed on the video signal SVa or the video signal SVb, decodes the signal and decodes the evaluation information data D.
T is generated and supplied to the control unit 60. The decoder unit 4
2, a control signal CT is supplied from the control unit 60, and the operation of the decoder unit 42 is controlled based on the control signal CT.

The control section 60 is connected to an operation input section 61 composed of operation keys, a remote control device and the like, and generates channel selection control signals TCa and TCb based on an operation signal PS from the operation input section 61. In addition, when selecting whether or not to perform the access restriction operation and when performing the access restriction, a desired restriction level for restricting viewing (hereinafter, referred to as “setting evaluation level”) is set. further,
The setting of the two-screen display, the exchange of the display screens, the channel switching and the like for each screen are performed. Further, a memory unit 62 and a timer unit 63 are connected to the control unit 60, and the memory unit 62 stores the evaluation information data supplied from the decoder unit 42 and the set evaluation level set by the operation input unit 61. Information DM is stored. In addition, time information TH is obtained from the timer section 63, and the time information TH is obtained.
The operation of the control unit 60 is performed using the above. Further, the control section 60 compares the evaluation information data supplied from the decoder section 42 with the set evaluation level, and outputs information on the output control signal COA, the display switching control signal CMS, the operation, and the like on the display section 34 based on the comparison result. A display information signal HJ for display is generated and supplied to the display control unit 64. The display control section 64 generates an on-screen signal Sdp based on the display information signal HJ and supplies it to the display superimposing section 33.

Next, referring to the flowchart of FIG.
Will be described. First, in step ST1, the display screen is initialized. In the initialization of the display screen, the two-screen display processing unit is operated by the display switching control signal CMS so that the program selected by the tuner 11 is displayed on the main screen and the program selected by the tuner 21 is displayed on the sub-screen. 31 is controlled. Further, a luminance signal and a color difference signal are supplied to the two-screen display processing unit 31, and output control signals COA, C are output so that a parent screen and a child screen are displayed on the screen of the display unit 34.
The color reproduction / synchronization processing units 13 and 23 are controlled by the OB. Further, the movable terminal 41c of the signal switching unit 41 is connected to the terminal 41a to which the video signal SVa is supplied from the tuner 11.
Side, and supplies the video signal SVa on the main screen side to the decoder section 42, and proceeds to step ST2.

Next, in step ST2, the timer elapsed time TMA is set to an initial value "0", and the process proceeds to step ST3. In step ST3, it is determined whether or not the evaluation information data DT has been supplied from the decoder unit 42. Here, when it is determined that the evaluation information data DT has been supplied, the process proceeds to step ST4, and when it is not supplied, the process proceeds to step ST9.

In step ST4, the timer elapsed time T
MA is set to time La. By setting the timer elapsed time TMA to the time La in this step ST4,
The terminal switching operation of the movable terminal 41c of the signal switching unit 41 is immediately performed by steps ST14 and ST15 described later, and the video signal for determining the access restriction can be quickly switched. The time La is set to a time longer than the time when the evaluation information is superimposed. For example, when the evaluation information is superimposed at intervals of about 1 second to 3 seconds, the time La is set to about 5 seconds.

When the process proceeds from step ST4 to step ST5, the supplied evaluation information data DT
Is determined whether or not the level is equal to or higher than the set evaluation level. Here, when it is determined that the level is equal to or higher than the set evaluation level, the process proceeds to step ST6, and when it is not equal to or higher than the set evaluation level, the process proceeds to step ST10.

In step ST6, it is determined whether or not the movable terminal 41c of the signal switching section 41 is on the terminal 41a side. Here, when it is determined that the movable terminal 41c is on the terminal 41a side, the process proceeds to step ST7, and when it is not determined that the movable terminal 41c is on the terminal 41a side, the process proceeds to step ST8.

In step ST7, the main screen erasing operation and the voice erasing operation are turned on. That is, when the main screen erasing operation is turned on, the supply of the luminance signal and the color difference signal from the color reproduction / synchronization processing unit 13 to the two-screen display processing unit 31 is stopped by the output control signal COA, so that the display unit 34 is stopped. Cancel the display of the main screen in. When the sound erasing operation is turned on, the output of the sound from the sound output unit 17 is stopped by stopping the supply of the sound signal from the sound amplification unit 16 to the sound output unit 17 by the output control signal COA. . Such processing is performed in step S
Performed at T7, and proceed to step ST13.

In step ST8, the sub-screen erasing operation is turned on. That is, when the sub-screen erasing operation is turned on, the supply of the luminance signal and the color difference signal from the color reproduction / synchronization processing unit 23 to the two-screen display processing unit 31 is stopped by the output control signal COB, so that the display unit 34 is stopped.
Cancel the display of the sub-screen of. Such processing is performed in step ST8, and the process proceeds to step ST13.

When the process proceeds from step ST3 to step ST9, it is determined in step ST9 whether the timer elapsed time TMA is equal to or longer than the time La. Here, when it is determined that the timer elapsed time TMA is longer than the time La, the process proceeds to step ST10, and when it is not longer than the time La, the process proceeds to step ST13.

In step ST10, similarly to step ST6, it is determined whether or not the movable terminal 41c of the signal switching unit 41 has been switched to the terminal 41a. Here, when it is determined that the movable terminal 41c is on the terminal 41a side, the process proceeds to step ST11, and when it is not on the terminal 41a, the process proceeds to step ST12.

In step ST11, the main screen erasing operation and the voice erasing operation are turned off. That is, the supply of the luminance signal and the color difference signal from the color reproduction / synchronization processing unit 13 to the two-screen display processing unit 31 is started by the output control signal COA, and the audio amplification unit 16 sends the audio signal to the audio output unit 17. The supply is started, the image is displayed on the main screen of the display unit 34, and the audio is output from the audio output unit 17, and the process proceeds to step ST13.

In step ST12, the sub-screen erasing operation is turned off. That is, the output control signal COB
By starting the supply of the luminance signal and the color difference signal from the color reproduction / synchronization processing section 23 to the two-screen display processing section 31, the video display is performed on the sub-screen of the display section 34, and the process proceeds to step ST13.

In step ST13, it is determined whether or not the main screen channel switching or the sub-screen channel switching has been performed based on the operation signal PS from the operation input unit 61. Here, when the channel switching is not performed, the process proceeds to step ST14, and when it is determined that the channel switching is performed, the process proceeds to step ST16.

At step ST14, it is determined whether or not the timer elapsed time TMA is longer than the time La.
Here, when it is not determined that the time La has elapsed, the process returns to step ST3, and when it is determined that the time La has elapsed, the process proceeds to step ST15.

In step ST15, the movable terminal 41c of the signal switching section 41 is switched, and the process returns to step ST2. For example, the movable terminal 41c of the signal switching unit 41 is the terminal 4
When it is set to 1a, it is switched to the terminal 41b.
When the movable terminal 41c is on the terminal 41b side, the terminal is switched to the terminal 41a side and the process returns to step ST2.

When the process proceeds from step ST13 to step ST16, in step ST16, it is determined whether or not channel switching is on the main screen side. Here, when it is determined that the channel switching is on the main screen side, the process proceeds to step ST17, and when the channel switching is not on the main screen side, the process proceeds to step ST18.

In step ST17, the main screen erasing operation and the voice erasing operation are turned off, and the movable terminal 41c of the signal switching section 41 is set to the terminal 41a side. Here, when the main screen erasing operation is turned off, a luminance signal and a color difference signal are supplied from the color reproduction / synchronization processing unit 13 to the two-screen display processing unit 31 by the output control signal COA, and the display is performed. Part 3
At 4, the main screen is displayed. When the sound erasing operation is turned off, the sound signal is supplied from the sound amplifier 16 to the sound output unit 17 by the output control signal COA, and the sound is output from the sound output unit 17. For this reason, the video of the program newly selected by the channel switching on the main screen is displayed on the main screen and the sound is output. Further, it is set so that the access restriction on the main screen side is determined, and the process returns to step ST2.

In step ST18, the sub-screen erasing operation is turned off and the movable terminal 4 of the signal switching section 41 is turned off.
1c is the terminal 41b side. Here, when the sub-screen erasing operation is turned off, a luminance signal or a color difference signal is supplied from the color reproduction / synchronization processing unit 23 to the two-screen display processing unit 31 by the output control signal COB, and the display is performed. The sub-screen is displayed by the unit 34. For this reason, the video of the program newly selected by the channel switching on the sub-screen side is displayed on the sub-screen side, and it is set so that the access restriction on the sub-screen side is determined, and the process returns to step ST2.

In this way, access can be restricted for each of the main screen and the sub-screen. Therefore, for example, as shown in FIG. 3A, the image “P
When "A" is displayed and the video "PB" is displayed on the sub-screen side, the access is automatically restricted when the evaluation information superimposed on the video signal SVa becomes equal to or higher than the set level. Then, the display on the main screen side is stopped as shown in FIG. 3B. Note that, as described above, when access is restricted on the main screen side, audio output is also restricted in conjunction with the main screen. When the evaluation information superimposed on the video signal SVb becomes equal to or higher than the set level, the access is automatically restricted, and the display on the sub-screen side is stopped as shown in FIG. 3C. When the evaluation information superimposed on the video signals SVa and SVb is equal to or higher than the set level, the access is automatically restricted, and the display on the main screen side and the sub screen side is performed as shown in FIG. 3D. Is aborted. When the access restriction is performed only on the sub-screen side, the display on the main screen side is displayed on one screen as shown in FIG. 3E, and a display KA indicating that the access restriction is performed on the sub-screen side is displayed. On-screen signal S
It can also be displayed based on dp.

As described above, according to the above-described first operation,
Even if the display is performed on the main screen and the sub-screen, access can be restricted for both displays. In addition, even in the case of a two-screen display on the left and right, access can be similarly restricted for two displays.

When access is restricted on the main screen, display is not performed on the main screen having a large display area, and display is performed only on the sub-screen having a small display area. Display area is not effectively used.

Therefore, as a second operation, when the access restriction is performed on the main screen side, the display on the sub-screen side, for which the access restriction is not performed, is displayed in the display area on the main screen side. A method for effectively utilizing the display area of FIG. 4 will be described with reference to the flowcharts of FIGS. In the following description of the operation, the main screen erasing operation, the sub-screen erasing operation, and the voice erasing operation are the same as the first operation, and the description is omitted.

In step ST101, display settings are initialized. In this initialization of the display screen, the program selected by the tuner 11 is displayed on the main screen side and the tuner 2 is displayed.
The two-screen display processing unit 31 is controlled by the display switching control signal CMS so that the program selected in 1 is displayed on the sub-screen side. Also, a luminance signal and a color difference signal are supplied to the two-screen display processing unit 31, and output control signals COA and COB so that a two-screen display of a main screen and a sub-screen can be performed on the screen of the display unit 34. The color reproduction / synchronization processing unit 13
23 is controlled. Further, the movable terminal 4 of the signal switching unit 41
1c is switched to the terminal 41a to which the video signal SVa from the tuner 11 is supplied, and the video signal SVa on the main screen is switched.
Is supplied to the decoder unit 42, and the process proceeds to step ST102.

Next, in step ST102, the timer elapsed time TMA is set to the initial value "0", and the switching flag CF indicating that the display on the main screen and the sub-screen has been switched is cleared. move on. In step ST103, it is determined whether the evaluation information data DT has been supplied from the decoder unit 42. here,
When the evaluation information data DT is not supplied, the process proceeds to step ST104, and when it is determined that the evaluation information data DT is supplied, the process proceeds to step ST105.

In step ST104, it is determined whether or not the timer elapsed time TMA has exceeded the time La. If the time La has not elapsed, the process returns to step ST103. If it is determined that the time La has elapsed, the process proceeds to step ST106. move on.

In step ST105, it is determined whether or not the supplied evaluation information data DT is at or above the evaluation set level.
Proceeding to T106, if it is determined that the level is equal to or higher than the evaluation setting level, the process proceeds to step ST107.

In step ST106, the movable terminal 41c
When the movable terminal 41c is on the terminal 41a side, the audio erasing operation is turned off and the access restriction is released, and the process proceeds to step ST109. Step S
At T107, the screen erasing operation based on the video signal selected by the movable terminal 41c is turned on, and when the movable terminal 41c is on the terminal 41a side, the sound erasing operation is turned on and the main screen side or the sub screen side is turned on. , And proceeds to step ST108.

In step ST108, it is determined whether or not a two-screen display mode in which screen switching is performed when access is restricted using the main screen and the sub-screen is set. When the two-screen display mode is not set in step ST108, the process proceeds to step ST109, in which the terminal of the movable terminal 41c is switched, the timer elapsed time TMA is set to "0", and the process returns to step ST103. When it is determined that the two-screen display mode is set, the process proceeds to step ST110.

In step ST110, the movable terminal 41c
Is determined to be the terminal 41a side. Here, when it is determined that the movable terminal 41c is on the terminal 41a side, the process proceeds to step ST111,
If c is not the terminal 41a side, the process proceeds to step ST117.

In step ST111, the timer elapsed time TMB is set to "0", and the routine proceeds to step ST112, where it is determined whether or not the timer elapsed time TMB has become equal to or longer than a predetermined time Lb. The predetermined time Lb indicates a time from when the access is restricted to when the display on the main screen and the sub-screen is switched, and is set to, for example, about 4 seconds. In step ST112, the timer elapsed time T
When it is determined that the MB is not equal to or longer than the predetermined time Lb, the process proceeds to step ST113 to determine whether or not a screen switching operation such as switching between the main screen and the sub-screen or switching between the two-screen display mode has been performed. Here, when the screen switching operation is not performed, the process returns to step ST112, and when it is determined that the screen switching operation is performed, the process proceeds to step ST114. In this step ST114, the display setting is switched so that the display is made in accordance with the switching operation, and step ST10 is performed.
Return to 2.

At step ST112, the timer elapsed time T
When it is determined that the MB is equal to or longer than the predetermined time Lb, the process proceeds to step ST115, and the channels selected by the tuners 11 and 21 are switched by the channel selection control signals TCa and TCb. Therefore, when access is restricted on the main screen, the video on the main screen is moved to the sub-screen. Further, a switching flag CF indicating that the display on the main screen side and the display on the sub screen side have been switched is set, and the process proceeds to step ST116. By setting the switching flag CF, it is possible to return the video to the original main screen when the access restriction is subsequently released.

Steps ST115 to ST11
At step ST116, the main screen erasing operation is turned off and the sub-screen erasing operation is turned on in step ST116. Further, the sound erasing operation is turned off, the output of the program for which access is restricted is stopped, and the process proceeds to step ST117.

Step ST110 or step ST
When the process proceeds from step 116 to step ST117, the process proceeds to step ST117.
At 117, it is displayed that the sub-screen is under access restriction, and the process proceeds to step ST118.

In step ST118, the movable terminal 41c
Terminal switching, and the timer elapsed time TMA
Is set to “0” and the process proceeds to step ST119.

In step ST119, the decoder section 42
It is determined whether or not the evaluation information data DT has been supplied from. Here, when it is determined that the evaluation information data DT has been supplied, the process proceeds to step ST120, and when it is not supplied, the process proceeds to step ST124.

In step ST120, the timer elapsed time TMA is set to time La, and the flow advances to step ST121. In step ST121, it is determined whether or not the level of the supplied evaluation information data DT is equal to or higher than the set evaluation level. Here, when it is determined that it is equal to or higher than the set evaluation level, the process proceeds to step ST122, and when it is not equal to or higher than the set evaluation level, the process proceeds to step ST125.

In step ST122, the signal switching section 41
It is determined whether or not the movable terminal 41c is the terminal to which the video signal of the main screen is supplied. Here, when it is determined that the movable terminal 41c is on the main screen side, the process proceeds to step ST123, and when it is not on the main screen side, the process proceeds to step ST127.

In step ST123, the main screen erasing operation and the sound erasing operation are turned on, the display of the main screen of the display unit 34 and the output of the sound are stopped, and the process proceeds to step ST127.

Steps ST119 to ST12
In step ST124, it is determined whether or not the timer elapsed time TMA is equal to or longer than the time La. Here, when it is determined that the timer elapsed time TMA is equal to or longer than the time La, the process proceeds to step ST125,
If the time is not longer than La, the process proceeds to step ST127.

In step ST125, step ST1
Similarly to 22, it is determined whether or not the movable terminal 41c of the signal switching unit 41 has been switched to the main screen side. Here, when it is determined that the movable terminal 41c is on the main screen side, the process proceeds to step ST126, and when it is not the main screen side, the process proceeds to step ST134.

In step ST126, the main screen erasing operation and the voice erasing operation are turned off, and a display is performed on the main screen of the display unit 34 and a sound is output, and step ST12 is performed.
Go to 7.

In step ST127, step ST1
It is determined whether or not the screen switching operation has been performed in the same manner as in 13. Here, when the screen switching operation is not performed, the process proceeds to step ST128, and when it is determined that the screen switching operation is performed, the process proceeds to step ST139.

In step ST128, it is determined whether or not the channel has been switched. If the channel has not been switched, the process proceeds to step ST129 to determine whether or not the timer elapsed time TMA is equal to or longer than the time La. Will be Here, when the time is not longer than the time La, the process returns to step ST119, and when it is determined that the time is longer than the time La, the process proceeds to step ST130.

In step ST130, the signal switching section 41
Of the movable terminal 41c, the timer elapsed time TMA is set to the initial value “0”, and the step ST1 is performed.
Return to 19.

Steps ST128 to ST13
In step ST131, it is determined whether or not the channel switching is performed on the main screen side. When it is determined that the channel is switched on the main screen side, the process proceeds to step ST132. When the channel switching is not performed on the main screen side, the process proceeds to step ST133.

In step ST132, the main screen erasing operation and the voice erasing operation are turned off, the movable terminal 41c is switched to the main screen, the timer elapsed time TMA is set to "0", and the process returns to step ST119. In step ST133, the sub-screen erasing operation is turned off, the movable terminal 41c is switched to the sub-screen side, and the timer elapsed time TMA is set to "0".
Return to 19.

In step ST125, it is determined that the movable terminal 41c is not on the main screen side, and step ST134 is performed.
In step ST134, an automatic return setting is made to return the display of the main screen, which has been moved to the position of the sub-screen due to the access restriction, to the position of the main screen automatically when the access restriction is released. Is determined.
If it is determined in this step ST134 that the automatic return setting has been made, the process proceeds to step ST135, and if the automatic return setting has not been made, the process proceeds to step ST136.
Proceed to.

In step ST135, switching flag CF
Is set or not, and when it is determined that the switching flag CF is set, step ST1 is performed.
Proceed to 37, and if not set, step ST
Proceed to 136.

Step ST134 or step ST
If the process proceeds from step 135 to step ST136, the process proceeds to step ST136.
In 136, the sub-screen erasing operation is turned off, and the process proceeds to step ST140. In step ST137, the channels selected by the tuners 11 and 21 are exchanged, and the process proceeds to step ST138. The main screen erasing operation and the sound erasing operation are turned off, and the process proceeds to step ST140. Steps ST137 and ST138
By the above-mentioned processing, the program on which the access restriction has been performed and which is on the sub-screen side can be returned to the original main screen side when the access restriction is released.

Steps ST127 to ST13
When the process proceeds to step ST139, in step ST139, the process proceeds to step ST11.
The display is set in accordance with the operation in the same manner as in step 4 and step ST
Go to 140.

In step ST140, an on-screen signal Sdp is generated so that a message display corresponding to the erasing operation state of the main screen and the sub-screen is displayed on the display unit 34, and the process returns to step ST102.

In this way, the access can be restricted on the main screen and the sub-screen, and when the access is restricted on the main screen, the display is switched between the main screen and the sub-screen. Since the processing is performed, it is possible to display a large image of the sub-screen on which the access restriction is not performed.

For example, as shown in FIG. 7A, an image “PA” is displayed on the main screen and an image “PB” is displayed on the sub-screen.
Is displayed, when the evaluation information superimposed on the video signal SVa becomes equal to or higher than the set level, the access is automatically restricted, and the display on the main screen is stopped as shown in FIG. 7B. Is done. Note that when access is restricted on the main screen side, audio output is also restricted in conjunction. Here, when the two-screen mode is set, when the timer elapsed time TMB elapses the predetermined time Lb, the display is switched between the main screen side and the sub-screen side as shown in FIG. 7C. Also, a display KA indicating that access restriction is performed on the sub-screen side is displayed. Here, when the channel switching on the main screen side is performed, the video “PB” is switched to the video “PB ′” as shown in FIG. 7D. Thereafter, when the access restriction for the image “PA” is released, if the automatic return setting is performed, the display is switched between the main screen side and the sub screen side as shown in FIG. 7E. When the automatic return setting has not been made, FIG.
As shown in F, the image “PA” is displayed on the sub-screen side.
Also, when the display is switched between the main screen side and the sub screen side, as shown in FIG. 7G, the display on the sub screen side is displayed on one screen, and the access restriction is performed on the image “PA”. A display KA indicating that the user is present may be performed. In addition,
When the access restriction is performed on both the main screen side and the sub screen side, both displays are stopped as shown in FIG. 7H.

As described above, according to the above-described second operation,
Even if the main screen and the sub screen are displayed, not only can the access be restricted for both displays, but if the main screen side restricts the access, the access is not restricted Since the display is exchanged with the sub-screen side, the display area of the display unit 34 can be effectively used. In addition, by performing the automatic return setting, when the access restriction is released, the display can be replaced and the display can be returned to the main screen side.

In the above-described second operation, display is performed on the main screen and the sub-screen. However, for example, in the case of a two-screen display on the left and right, access can be restricted for both displays and Thus, the display area of the display unit 34 can be effectively used as the display on which the access is restricted is displayed on the sub-screen side. FIG. 8 shows this operation as a third operation.
This will be described with reference to flowcharts in FIGS.

In step ST201, display settings are initialized. In the initialization of the display screen, the display switching control signal CMS is used to display the program selected by the tuner 11 on the left screen of the display unit 34 and display the program selected by the tuner 21 on the right screen, for example. The two-screen display processing unit 31 is controlled. Further, a luminance signal and a color difference signal are supplied to the two-screen display processing unit 31, and color reproduction and reproduction are performed by output control signals COA and COB so that a left screen and a right screen are displayed on the screen of the display unit 34. Synchronization processing unit 13,
23 is controlled. Further, the movable terminal 4 of the signal switching unit 41
1c is switched to the terminal 41a to which the video signal SVa from the tuner 11 is supplied, and the left screen video signal SVa is switched.
Is supplied to the decoder section 42 and the process proceeds to step ST202.

In step ST202, the timer elapsed time TMA is set to the initial value "0", and the process proceeds to ST203. In step ST203, it is determined whether or not the evaluation information data DT has been supplied from the decoder section 42. here,
When the evaluation information data DT is not supplied, the process proceeds to step ST204, and when it is determined that the evaluation information data DT is supplied, the process proceeds to step ST205.

At step ST204, it is determined whether or not the timer elapsed time TMA has become equal to or longer than the time La. If it is not equal to or longer than the time La, the process returns to step ST203. If it is determined that the time has exceeded La, the process proceeds to step ST206.

In step ST205, it is determined whether or not the supplied evaluation information data is at or above the evaluation set level.
The process proceeds to 06, and when it is determined that the level is equal to or higher than the evaluation set level, the process proceeds to step ST207.

In step ST206, the movable terminal 41c
When the movable terminal 41c is set to the terminal 41a side, the audio erasing operation is set to the off state and the screen erasing operation based on the video signal selected in the step is turned off.
Go to 209. In step ST207, the screen erasing operation based on the video signal selected by the movable terminal 41c is turned on, and when the movable terminal 41c is on the terminal 41a side, the sound erasing operation is turned on, and the process proceeds to step ST208.

In step ST208, it is determined whether or not a two-screen display mode in which screen switching is performed when access is restricted using the main screen and the sub-screen is set. When the two-screen display mode is not set in step ST208, the process proceeds to step ST209, in which the terminal of the movable terminal 41c is switched, the timer elapsed time TMA is set to "0", and the process returns to step ST203. When it is determined that the two-screen display mode is set, the process proceeds to step ST210.

In step ST210, the timer elapsed time TMB is set to "0", and the process proceeds to step ST211 to determine whether the timer elapsed time TMB has become equal to or longer than a predetermined time Lb. If the timer elapsed time TMB is not equal to or longer than the predetermined time Lb in step ST211, the process proceeds to step ST212, and it is determined whether or not a screen switching operation such as switching between a main screen and a sub-screen or switching between two-screen display modes has been performed. If the screen switching operation has not been performed, the process returns to step ST211. If it is determined that the screen switching operation has been performed, the process proceeds to step ST213. In this step ST213, the display setting is switched so as to provide a display in accordance with the switching operation, and step ST20 is performed.
Return to 2.

At step ST211 the timer elapsed time T
When it is determined that the MB is equal to or longer than the predetermined time Lb, the process proceeds to step ST214 to determine whether or not the movable terminal 41c is on the terminal 41a side. Here, the movable terminal 4
When it is determined that 1c is on the terminal 41a side, the process proceeds to step ST215, and when the movable terminal 41c is not on the terminal 41a, the process proceeds to step ST216.

In step ST215, the channel selection control signal T
The channels selected by the tuners 11 and 21 are switched by Ca and TCb, and the process proceeds to step ST216. In step ST216, the display switching control signal CMS is applied to the terminal 4
The display on the 1b side is changed to a sub-screen, and the process proceeds to step ST217. In step ST217, the main screen erasing operation is turned off and the sub-screen erasing operation is turned on.
Further, the voice erasing operation is turned off, and step ST21 is performed.
Proceed to 8. Therefore, when the access is restricted in the left and right two-screen display, the display is switched to the two-screen display of the main screen and the sub-screen, and the access is restricted on the sub-screen side.

In step ST218, it is displayed that the sub-screen is under access restriction, and the process proceeds to step ST219. In step ST219, the terminal of the movable terminal 41c is switched, and the timer elapsed time TMA is set to "0".
And proceeds to step ST220.

In step ST220, the decoder section 42
It is determined whether or not the evaluation information data DT has been supplied from. Here, when it is determined that the evaluation information data DT has been supplied, the process proceeds to step ST221, and when it is not supplied, the process proceeds to step ST225.

In step ST221, the timer elapsed time TMA is set to the time La, and in step ST222, it is determined whether or not the level of the supplied evaluation information data DT is equal to or higher than the set evaluation level. Here, when it is determined that the value is equal to or higher than the set evaluation level, step ST
The process proceeds to 223, and if not higher than the set evaluation level, proceeds to step ST226.

At step ST223, the signal switching section 41
It is determined whether or not the movable terminal 41c is the terminal to which the video signal of the main screen is supplied. Here, when it is determined that the movable terminal 41c is on the main screen side, the process proceeds to step ST224, and when it is not on the main screen side, the process proceeds to step ST228.

In step ST224, the main screen erasing operation and the voice erasing operation are turned on, the display of the main screen of the display unit 34 and the output of sound are stopped, and the process proceeds to step ST228.

Steps ST220 to ST22
In step ST225, it is determined whether or not the timer elapsed time TMA is equal to or longer than the time La. Here, when it is determined that the timer elapsed time TMA is equal to or longer than the time La, the process proceeds to step ST226,
If not, the process proceeds to step ST228.

In step ST226, the signal switching section 41
It is determined whether or not the movable terminal 41c is switched to the main screen side. Here, when it is determined that the movable terminal 41c is on the main screen side, step ST22 is performed.
Step ST235 if it is not the main screen
Proceed to.

In step ST227, the main screen erasing operation and the voice erasing operation are turned off, and the display is performed on the main screen of the display unit 34 and the voice is output, and the process proceeds to step ST22.
Proceed to 8.

In step ST228, it is determined whether or not a screen switching operation has been performed. Here, when the screen switching operation is not performed, the process proceeds to step ST229, and when it is determined that the screen switching operation is performed, the process proceeds to step ST242.

In step ST229, it is determined whether or not the channel has been switched. If the channel has not been switched, the process proceeds to step ST230 to determine whether or not the timer elapsed time TMA is equal to or longer than the time La. Will be Here, when the time is not longer than the time La, the process returns to step ST220, and when it is determined that the time is longer than the time La, the process proceeds to step ST231.

In step ST231, the signal switching section 41
Of the movable terminal 41c, the timer elapsed time TMA is set to the initial value “0”, and the step ST2 is performed.
Return to 20.

Steps ST229 to ST23
In step ST232, it is determined whether or not the channel switching is on the main screen side. When it is determined that the channel switching is on the main screen side, the process proceeds to step ST233, and when it is not the main screen side, the process proceeds to step ST234.

In step ST233, the main screen erasing operation and the voice erasing operation are turned off, the movable terminal 41c is switched to the main screen, the timer elapsed time TMA is set to "0", and the process returns to step ST220. In step ST234, the sub-screen erasing operation is turned off, the movable terminal 41c is switched to the sub-screen side, and the timer elapsed time TMA is set to "0".
Return to 20.

In step ST226, it is determined that the movable terminal 41c is not on the main screen side, and step ST235 is performed.
In step ST235, it is determined whether the main screen erasing operation is in the off state. Here, when it is determined that the main screen erasing operation is in the off state, the process proceeds to step ST236. If the main screen erasing operation is not in the off state, the process proceeds to step ST240.

In step ST236, the display of the main screen which has been moved to the position of the sub-screen due to the access restriction is displayed.
When the access restriction is released, it is determined whether or not an automatic return setting for automatically returning to the position of the main screen is made. When it is determined in step ST236 that the automatic return setting has been performed, the process proceeds to step ST237,
If the automatic return setting has not been made, step ST2
Proceed to 39.

In step ST237, the sub-screen erasing operation is turned off, the screen display is switched from the main screen and the sub-screen display to the left and right screen display, and the process proceeds to step ST238. In step ST238, display position control is performed to return the program whose access restriction has been released to the original screen position, and the process proceeds to step ST243. If the automatic return setting has not been made, the sub-screen erasing operation is turned off in step ST239, and the screen display is switched from the main screen and the sub-screen display to the left and right screen display, and step ST243 is performed.
Proceed to.

When it is determined in step ST235 that the main screen erasing operation is not in the OFF state, step ST240 is performed.
, And the channels selected by the tuners 11 and 21 are exchanged. Further, in step ST241, the main screen erasing operation is turned off, the sub-screen erasing operation is turned on, and the voice erasing operation is turned off, and the process proceeds to step ST243. For this reason, while the access restriction of the program on the main screen is performed and the access restriction of the program on the sub-screen is released, the program on the sub-screen whose access restriction has been released is displayed on the main screen. And sound is output.

Further, from step ST228 to step S228
When proceeding to T242, in step ST242, step S242 is executed.
The display setting is set according to the operation at T228 and the process proceeds to step S228.
Proceed to T243.

In step ST243, an on-screen signal Sdp is generated so that a message display corresponding to the erasing operation state of the main screen and the sub-screen is displayed on the display unit 34, display control is performed, and the process returns to step ST202.

In this way, both the left and right screens can be restricted in access. When the access is restricted, the display is switched to the main screen and the sub-screen, and the display in which the access is restricted is performed. On the sub-screen side, it is possible to display a large image for which access restriction is not performed.

For example, as shown in FIG. 11A, when the image "PA" is displayed on the left screen and the image "PB" is displayed on the right screen, evaluation information superimposed on the image signal SVa is set. 11B, the access is automatically restricted, and the display on the left screen is stopped as shown in FIG. 11B. Note that, when access restriction is performed on the display on the left screen, the output of audio is also restricted in conjunction. Here, when the two-screen mode is set, after the predetermined time TMB elapses, the display on the right screen is changed to the display on the main screen side as shown in FIG. 11C. A display KA indicating that access restriction is performed on the sub-screen side.
Is displayed. Here, when the channel switching on the main screen side is performed, the image “PB” is changed to the image “P” as shown in FIG.
B ′ ”. Thereafter, when the access restriction for the image “PA” is released, if the automatic return setting is performed, the image “PA” is displayed on the left screen and the image “PB ′” is displayed on the right screen as shown in FIG. 11E. Is displayed. If the automatic return setting has not been made, the image “PB ′” is displayed on the left screen and the image “PA” is displayed on the right screen as shown in FIG. 11F. Further, when the right screen is displayed on the main screen side, as shown in FIG. 11G, the right screen is displayed on one screen and the access restriction is performed on the image “PA”. The display KA shown may be performed. When access is restricted on both the left and right screens, both displays are stopped as shown in FIG. 11H.

As described above, according to the above-described third operation,
Even if the left and right screens are displayed, not only can the access be restricted for both displays, but if the access is restricted on one screen, the display is switched to the main screen and sub screen display. Since the display on the screen side where the access restriction is not performed is displayed on the main screen side, the display area of the display unit 34 can be effectively used. When the access restriction is released, the display is returned to the left and right screen display, and by performing the automatic return setting, the display with the access restriction released can be displayed at the original position.

In the above-described embodiment, the case where two tuners are provided has been described. However, in the television apparatus, not only a broadcast program and a distribution program can be selected and displayed on a screen, but also an optical disk apparatus and a video apparatus. A video based on a reproduction signal from a reproduction device such as a tape recorder is also displayed on a screen. Therefore, a television device which can display a broadcast program or a distribution program and a program reproduced by an external reproduction device and perform access restriction will be described with reference to FIG. In FIG. 12,
Parts corresponding to those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The video signal SVa obtained by the video intermediate frequency processing section 12 is supplied to terminals 52ma and 52nb of the signal switching section 52. The video signal SVe supplied from the playback device via the external input terminal 51 is supplied to terminals 52mb and 52na of the signal switching unit 52. The movable terminal 52mc of the signal switching unit 52 is connected to the color reproduction / synchronization processing unit 13, the audio intermediate frequency processing unit 15, and the terminal 41a of the signal switching unit 41.
The movable terminal 52nc of the signal switching unit 52 is connected to the color reproduction / synchronization processing unit 23 and the terminal 41b of the signal switching unit 41. The switching operation of the signal switching unit 52 is controlled by the switching control signal CSB from the control unit 60, and the video signal SVa on the tuner side is transmitted from the movable terminal 52mc of the signal switching unit 52.
Is output, the video signal SVe supplied via the external input terminal 51 is output from the movable terminal 52nc. When the video signal SVe is output from the movable terminal 52mc of the signal switching unit 52, the video signal SVa is output from the movable terminal 52nc.

Next, the operation will be described with reference to the flowcharts of FIGS. The operations shown in the flowcharts of FIGS. 13 to 15 correspond to the above-described second operation.

First, in step ST301, display settings are initialized. In the initialization of the display screen, the signal switching unit 52 is controlled by the switching control signal CSB, and the video signal SVe supplied via the external input terminal 51 is connected to the terminal 52m.
It is set so that the video signal SVa of the program selected by the tuner 11 is output from the terminal 52nc while being output from the terminal c. The two-screen display processing unit 31 is controlled by the display switching control signal CMS so that the video based on the video signal SVe is displayed on the main screen side and the video based on the video signal SVa is displayed on the sub-screen side. Further, a luminance signal and a color difference signal are supplied to the two-screen display processing unit 31, and the color reproduction / synchronization is performed by the output control signals COA and COB so that the main screen and the sub-screen are displayed on the screen of the display unit. Processing unit 1
3 and 23 are controlled. Further, the movable terminal 41c of the signal switching unit 41 is switched to the terminal 41a to which the video signal SVe is supplied, and the video signal SVe on the main screen side is converted to the decoder unit 42.
And proceeds to step ST302.

Next, in step ST302, the timer elapsed time TMA is set to the initial value "0", and the switching flag CF indicating that the display on the main screen and the sub-screen has been switched is cleared. move on. In step ST303, it is determined whether the evaluation information data DT has been supplied from the decoder unit 42. here,
When the evaluation information data DT is not supplied, the process proceeds to step ST304, and when it is determined that the evaluation information data DT is supplied, the process proceeds to step ST305.

In step ST304, it is determined whether or not the timer elapsed time TMA has exceeded the time La. If the time La has not elapsed, the process returns to step ST303. If it is determined that the time La has elapsed, the process returns to step ST306. move on.

In step ST305, it is determined whether or not the supplied evaluation information data DT is at or above the evaluation set level.
Proceeding to T306, if it is determined that the value is equal to or higher than the evaluation setting level, the process proceeds to step ST307.

At step ST306, the movable terminal 41c
When the movable terminal 41c is set to the terminal 41a side, the audio erasing operation is set to the off state and the screen erasing operation based on the video signal selected in the step is turned off.
Proceed to 309. In step ST307, the screen erasing operation based on the video signal selected by the movable terminal 41c is turned on, and when the movable terminal 41c is on the terminal 41a side, the sound erasing operation is turned on, and the process proceeds to step ST308.

In step ST308, it is determined whether or not a two-screen display mode for switching the screen display between the main screen and the sub-screen when the access is restricted is set. If the two-screen display mode is not set in step ST308, the process proceeds to step ST309, where the movable terminal 41 is set.
The terminal of c is switched and the timer elapsed time TMA
Is set to “0” and the process returns to step ST303. Also,
When it is determined that the two-screen display mode is set, the process proceeds to step ST310.

In step ST310, the movable terminal 41c
Is determined to be the terminal 41a side. Here, when it is determined that the movable terminal 41c is on the terminal 41a side, the process proceeds to step ST311 and the movable terminal 41c is determined.
When c is not the terminal 41a side, the process proceeds to step ST319.

In step ST311, the timer elapsed time TMB is set to "0", and the process proceeds to step ST312, where the timer elapsed time TMB is set to the predetermined time Lb (for example, 4).
Seconds) or not. If the timer elapsed time TMB is not equal to or longer than the predetermined time Lb in step ST312, the process proceeds to step ST313 to determine whether or not channel switching has been performed when the main screen is displaying a program selected by the tuner. . Here, when it is determined that the channel switching has been performed, step S
After turning off the main screen erasing operation and the voice erasing operation in T314, the process returns to step ST302, and when the channel switching is not performed, the process proceeds to step ST315.

In step ST315, it is determined whether or not a screen switching operation such as switching between the main screen and the sub-screen or switching between the two-screen display mode has been performed. If no screen switching operation has been performed, the process returns to step ST312. If it is determined that the screen switching operation has been performed, the process proceeds to step ST316. In this step ST316, the display setting is switched so as to provide a display corresponding to the switching operation, and the process proceeds to step ST30.
Return to 2.

In step ST312, the timer elapsed time T
When it is determined that the MB is equal to or longer than the predetermined time Lb, the process proceeds to step ST317 to perform terminal switching of the signal switching unit 52 and set a switching flag CF indicating that the display on the main screen side and the sub screen side has been switched. Then, the process proceeds to step ST318.

In step ST318, the main screen erasing operation is turned off and the sub-screen erasing operation is turned on. Further, the voice erasing operation is turned off, and step ST
Proceed to 319.

Step ST310 or step ST
If the process proceeds from step 318 to step ST319, the process proceeds to step ST319.
At 319, it is displayed that the sub-screen is under access restriction, and the process proceeds to step ST320.

In step ST320, the movable terminal 41c
Terminal switching, and the timer elapsed time TMA
Is set to “0” and the process proceeds to step ST321.

In step ST321, the decoder section 42
It is determined whether or not the evaluation information data DT has been supplied from. Here, when it is determined that the evaluation information data DT has been supplied, the process proceeds to step ST322, and when it is not supplied, the process proceeds to step ST326.

In step ST322, the timer elapsed time TMA is set to time La, and the flow advances to step ST323. In step ST323, it is determined whether or not the level of the supplied evaluation information data DT is equal to or higher than the set evaluation level. Here, when it is determined that the level is equal to or higher than the set evaluation level, the process proceeds to step ST324, and when it is not equal to or higher than the set evaluation level, the process proceeds to step ST327.

In step ST324, the signal switching section 41
It is determined whether or not the movable terminal 41c is the terminal to which the video signal of the main screen is supplied. Here, when it is determined that the movable terminal 41c is on the main screen side, the process proceeds to step ST325, and when it is not on the main screen side, the process proceeds to step ST329.

In step ST325, the main screen erasing operation and the voice erasing operation are turned on, the display of the main screen of the display unit 34 and the output of the sound are stopped, and the process proceeds to step ST329.

Steps ST321 to ST32
In step ST326, it is determined whether or not the timer elapsed time TMA is equal to or longer than the time La. Here, when it is determined that the timer elapsed time TMA is equal to or longer than the time La, the process proceeds to step ST327,
If not, the process proceeds to step ST329.

In step ST327, the signal switching section 41
It is determined whether or not the movable terminal 41c is switched to the main screen side. Here, when it is determined that the movable terminal 41c is on the main screen side, step ST32 is performed.
8 and if not on the main screen side, step ST334.
Proceed to.

In step ST328, the main screen erasing operation and the voice erasing operation are turned off, and a display is performed on the main screen of the display unit 34 and sound is output, and step ST32 is performed.
Go to 9.

In step ST329, it is determined whether or not a screen switching operation has been performed. Here, when the screen switching operation is not performed, the process proceeds to step ST330, and when it is determined that the screen switching operation is performed, the process proceeds to step ST339.

In step ST330, it is determined whether or not channel switching has been performed when the main screen is displaying a program selected by the tuner. If channel switching has not been performed, the process proceeds to step ST331. It is determined whether or not the timer elapsed time TMA is equal to or longer than the time La. Here, when the time is not longer than the time La, the process returns to step ST321, and when it is determined that the time is longer than the time La, the process proceeds to step ST332.

In step ST332, the signal switching section 41
Of the movable terminal 41c, and the timer elapsed time TMA is set to the initial value “0”, and the step ST3 is performed.
Return to 21.

From step ST330 to step ST33
In step ST333, the main screen erasing operation and the voice erasing operation are turned off, and a signal on the main screen side is selected by the movable terminal 41c. Further, the timer elapsed time TMA is set to the initial value “0”, and the process returns to step ST321.

Next, in step ST327, the movable terminal 41
It is determined that c is not the main screen side and step ST
In step ST334, in step ST334, an automatic return setting for returning the display of the main screen, which has been moved to the position of the sub-screen due to the access restriction, to the position of the main screen automatically when the access restriction is released. It is determined whether or not it has been performed. When it is determined in step ST334 that the automatic return setting has been made, the process proceeds to step ST335, and when the automatic return setting has not been made, the process proceeds to step ST335.
Proceed to T336.

In step ST335, the switching flag CF
Is set or not, and when it is determined that the switching flag CF is set, step ST3 is performed.
Proceed to 37, and if not set, step ST
Proceed to 336.

Step ST334 or step ST
If the process proceeds from step 335 to step ST336, the process proceeds to step ST336.
In 336, the sub-screen erasing operation is turned off, and the process proceeds to step ST340. In step ST337, the signal output by the signal switching unit 52 is switched, and the process proceeds to step ST339. The main screen erasing operation and the sound erasing operation are turned off, and the process proceeds to step ST340. Further, when the process proceeds from step ST329 to step ST339, the display is set in accordance with the operation in step ST339, and the process proceeds to step ST340.

In step ST340, an on-screen signal Sdp is generated so that a message display corresponding to the erasing operation state of the main screen and the sub-screen is displayed on the display unit 34, and the process returns to step ST302.

As described above, even when the video signal SVe is supplied to the external input terminal 51, the access restriction can be performed on the main screen side and the sub-screen side, and the access restriction can be performed on the main screen side. When the processing is performed, the display is switched on the main screen side and the sub screen side, so that the image of the sub screen for which the access restriction is not performed can be displayed large.

For example, as shown in FIG. 16A, a picture “PE” based on the picture signal SVe supplied to the external input terminal 51 is displayed on the main screen, and a program selected by the tuner 11 is displayed on the sub-screen. Is displayed, when the evaluation information superimposed on the video signal SVe becomes equal to or higher than the set level, the access is automatically restricted, and as shown in FIG. 16B, the main screen is displayed. The display on the side is stopped. Note that when access is restricted on the main screen side, audio output is also restricted in conjunction. Here, when the two-screen mode is set, the display is switched between the main screen and the sub-screen after a predetermined time TMB has elapsed, as shown in FIG. 16C. Also, a display KA indicating that access restriction is performed on the sub-screen side is displayed. Here, when the channel switching on the main screen side is performed, the image “PA” becomes the image “PA ′” as shown in FIG. 16D.
Can be switched to After that, when the access restriction on the image “PE” is released, if the automatic return setting is performed, the display is switched between the main screen side and the sub screen side as shown in FIG. 16E. If the automatic return setting has not been made, the image “PE” is displayed on the sub-screen side as shown in FIG. 16F. When the display is switched between the main screen side and the sub screen side, the display on the sub screen side is displayed on one screen as shown in FIG.
A display KA indicating that the access restriction is performed may be performed. When access is restricted on both the main screen side and the sub screen side, both displays are stopped as shown in FIG. 16H.

As described above, according to the above-described second embodiment, the video signal S supplied through the external input terminal 51 is output.
Even when the video based on Ve and the video of the program selected by the tuner are displayed on the main screen and the sub-screen, not only can the access be restricted for both displays, but also the main screen side In the case where the access restriction is performed, the display is switched with the sub-screen side where the access restriction is not performed, so that the display area of the display unit 34 can be effectively used. In addition, by performing the automatic return setting, when the access restriction is released, the display can be replaced and the display can be returned to the main screen side.

Although the description is omitted, it goes without saying that the first operation and the third operation of the first embodiment can be performed in the same manner in the second embodiment. is there.

In the first embodiment, the video signal obtained by the video intermediate frequency processing unit 12 is supplied to the audio intermediate frequency processing unit 15, so that the program selected by the tuner 11 is selected. When the access is restricted, the program selected by the tuner 11 and the tuner 21 can be output so that the program selected by the tuner 21 without the access restriction can be output. It is assumed that replacement is performed. Further, in the above-described second embodiment, when access restriction is performed on either the program selected on the tuner 11 side or the program supplied via the external input terminal 51, the other The signal switching unit 52 is provided so that the video and audio of the program can be output. Further, in the above description of the operation, the case where the output of audio for a program to which access is restricted is controlled is described.

Here, as shown in FIG. 17, the audio intermediate frequency processing sections 15 and 25
And an audio signal of each program is obtained, and an audio signal is selected by the signal switching unit 71 by the audio switching signal CSD from the control unit 60 and supplied to the audio amplifying unit 16 according to the situation of the access restriction. , Tuner 11 and tuner 2
The audio output from the audio output unit 17 can be switched according to the access restriction without exchanging the program selected by 1 and without providing the signal switching unit 52. This is effective when the receiving frequencies of the tuners 11 and 21 are different, for example, when a terrestrial tuner and a satellite broadcasting tuner are used. In the example of FIG. 17, the switching between the main screen and the sub-screen and between the left screen and the right screen are performed by controlling the two-screen display processing unit 31 with the display switching control signal CMS from the control unit 60.

FIG. 18 is a flow chart showing the operation in the case where the sound of the two programs is switched so that the sound can be heard. In step ST401, the audio position of the selection screen, that is, the audio intermediate frequency processing units 15, 2
For example, information indicating which audio signal of No. 5 is selected by the signal switching unit 71 is stored in, for example, the memory unit 62, and the process proceeds to step ST402.

In step ST402, it is determined whether or not a change has occurred in the screen erasing operation due to the result of comparison between the evaluation information data and the evaluation setting level or the fact that the evaluation information data has not been obtained for the time La or longer. If there is no change in the screen erasing operation, step ST
Returning to 401, when a change occurs in the screen erasing operation, the process proceeds to step ST403.

In step ST403, it is determined whether or not the change in the screen erasing operation is to turn the screen erasing operation on. Here, when it is determined that the change is such that the screen erasing operation is turned on, step ST404 is performed.
If not, the process proceeds to step ST411.

In step ST404, it is determined whether or not the main screen erasing operation is turned on. If the main screen erasing operation is not turned on, step ST4 is performed.
The process proceeds to step ST406 when it is determined that the main screen erasing operation has been turned on.

In step ST405, when the sub-screen erasing operation is changed to the on state, it is determined whether or not the main screen erasing operation is in the off state, and it is determined that the main screen erasing operation is in the off state. When it is done, step ST407
The signal switching unit 71 selects the audio signal on the main screen side, and proceeds to step ST410. If the main screen erasing operation is not in the off state, the process proceeds to step ST408.

In step ST406, when the main screen erasing operation is changed to the on state, it is determined whether or not the sub-screen erasing operation is in the off state, and it is determined that the sub-screen erasing operation is in the off state. When it is done, step ST409
When the sub-screen erasing operation is not in the OFF state, the process proceeds to step ST408.

Step ST405 or step ST
When the process proceeds from step 406 to step ST408, the voice erasing operation is turned on and the process returns to step ST402.

Steps ST406 to ST40
At step ST409, the signal switching section 71 selects the audio signal on the sub-screen side at step ST409, and proceeds to step ST410. In step ST410, the voice erasing operation is turned off, and the process returns to step ST402.

Steps ST403 to ST41
In step ST411, it is determined whether or not the screen erasing operation of the audio position recorded in the memory unit 62 has been turned off. Here, when the screen erasing operation of the audio position is not turned off, step S
Proceeding to T412, the signal switching unit 71 selects an audio signal on the side different from the audio position stored in the memory unit 62, and proceeds to step ST413. In step ST413, the voice erasing operation is turned off, and the process returns to step ST402.

If it is determined in step ST411 that the screen erasing operation for the audio position has been turned off, the process proceeds to step ST414, where the audio signal of the audio position stored in the memory unit 62 is converted by the signal switching unit 71. Select and go to step ST415. In this step ST415, the voice erasing operation is turned off, and the process ends.

As described above, when the screen erase operation of the program at the sound position stored in the memory unit 62 is not in the OFF state, the sound of another program is automatically output and the screen of the program at the stored sound position is automatically output. When the erasing operation is turned off, the sound at the sound position stored automatically is output. When the screen erasing operation is turned on, the sound of the program whose screen erasing operation is turned off is automatically selected. For this reason, audio switching can be performed automatically. For example, when the output of a program is restricted, the audio can be switched and the audio of another program for which the output is not restricted can be heard. At the same time, when the restriction on the output of the program is released, the sound of the program before switching can be continuously heard.

As described above, according to the above-described embodiment,
Even when two programs are simultaneously displayed on one screen, the evaluation information superimposed on the programs is sequentially determined for each program, and the output of the program is restricted based on the determination result. Therefore, there is no need to provide a circuit for restricting access for each program to be displayed.
Access can be restricted for one program.

In the above-described embodiment, a case has been described where two programs are displayed on one screen. However, the number of programs displayed on one screen is not limited to two, and three programs may be displayed on one screen. The present invention can be applied to a case where the above programs are displayed on a multi-screen. Further, the information used to restrict the output of the program is, of course, not limited to V-CHIP information.

[0157]

According to the present invention, when a plurality of programs are displayed on one screen, the program output restriction data superimposed on the program is sequentially compared with a desired restriction level, and the comparison result is obtained. Since the output of the program is controlled based on the program, it is not necessary to provide a processing circuit for restricting the access for each program, and the access to a plurality of programs can be restricted with an inexpensive configuration.

Further, when a program determined to restrict the output based on the comparison result occurs, the output of the program determined to restrict the output is restricted, and the display of the program not determined to restrict the output is displayed. Since it is large, the display area of one screen can be effectively used.

When a two-screen display composed of a main screen and a sub-screen having a smaller display size than the main screen is performed, or when a two-screen display composed of two screens having the same display size is performed, If it is determined that the output of the program on the main screen side or one screen of the same display size is to be restricted, the program is moved to the sub-screen side to restrict the output of the program and to the sub-screen side. When it is no longer determined that the output of the program is to be restricted in this state, the display is returned to the main screen side or the two-screen display of the same display size.

Furthermore, when the sound of the program to be output is selectable, the sound of the program that is no longer determined to be output-limited is automatically selected and output. Even when switching to the sound of the program, when the restriction on the output of the program is released, the sound of the program whose output has been restricted can be automatically heard.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a first embodiment of a television apparatus according to the present invention.

FIG. 2 is a flowchart illustrating a first operation of the first embodiment.

FIG. 3 is a diagram for describing a first operation of the first embodiment.

FIG. 4 is a flowchart (1/3) showing a second operation of the first embodiment.

FIG. 5 is a flowchart (2/3) showing a second operation of the first embodiment.

FIG. 6 is a flowchart (3/3) showing a second operation of the first embodiment.

FIG. 7 is a diagram for explaining a second operation of the first embodiment.

FIG. 8 is a flowchart (1/3) showing a third operation of the first embodiment.

FIG. 9 is a flowchart (2/3) showing a third operation of the first embodiment.

FIG. 10 is a flowchart (3/3) showing a third operation of the first embodiment.

FIG. 11 is a diagram for explaining a third operation of the first embodiment.

FIG. 12 is a diagram illustrating a configuration of a second embodiment of a television device.

FIG. 13 is a flowchart (1/3) showing the operation of the second embodiment.

FIG. 14 is a flowchart (2/3) showing the operation of the second embodiment.

FIG. 15 is a flowchart (3/3) showing the operation of the second embodiment.

FIG. 16 is a diagram for explaining the operation of the second embodiment.

FIG. 17 is a diagram illustrating a configuration of a third embodiment of a television device.

FIG. 18 is a flowchart showing an operation in a case where a voice replacement function is provided.

FIG. 19 is a diagram showing program evaluation information.

[Explanation of symbols]

 11, 21 Tuner 12, 22 Video intermediate frequency processing unit 13, 23 Color reproduction / synchronization processing unit 15, 25 Audio intermediate frequency processing unit 16 Audio amplification unit 17 Audio output unit 31 Two-screen display processing unit 32 Video amplification unit 33 Display superimposition Unit 34 display unit 41, 52, 71 signal switching unit 42 decoder unit 51 external input terminal 60 control unit 61 operation input unit 62 memory unit 63 timer unit 64 display control unit

Continued on the front page F term (reference) 5C025 AA28 BA25 BA28 CA01 CA09 CB05 CB07 CB10 DA04 DA05 5C063 AA20 AC01 AC05 AC10 DA07 DA13 DB02 EB01 EB04 EB35 EB37 5C064 BA01 BA07 BB07 BB10 BC06 BC16 BC18 BC20 BC27 BD07 BD07

Claims (15)

[Claims] When displaying and viewing a plurality of programs on one screen, program output restriction data superimposed on the program is sequentially compared with a desired restriction level, and the program is limited based on a comparison result. A program output control method comprising controlling output of a program on which output restriction data is superimposed. 2. When a program determined to restrict output based on the comparison result occurs, the output of the program determined to be restricted is restricted, and the output of the program not determined to be restricted is restricted. 2. The program output control method according to claim 1, wherein the display is large. 3. The plurality of programs are first and second programs, and a display area on the one screen is a two-screen display including a main screen and a sub-screen smaller in display size than the main screen. The video of the first program is output using the main screen side, and the video of the second program is output using the sub-screen side, and the video of the first and second programs is output. While the first
If it is determined that the output of the first program is to be restricted based on the comparison result between the program output restriction data superimposed on the program and the desired restriction level, the video of the second program is displayed on the main screen. 3. The program output control method according to claim 2, wherein the output of the first program is restricted on the sub-screen side and the output of the video of the first program is restricted on the sub-screen side. 4. The program output control method according to claim 3, wherein when the output of the video of the first program is restricted on the sub-screen side, the display of the sub-screen is stopped. 5. When the output of the video of the first program is restricted on the sub-screen side, a program output restriction data superimposed on the first program is compared with the desired restriction level. When it is no longer determined that the output of the first program is restricted based on the comparison result, the programs are switched on the main screen and the sub-screen, and the video of the first program is output on the main screen. 4. The program output control method according to claim 3, wherein: 6. The plurality of programs are first and second programs, and the display on the one screen is a two-screen display including a main screen and a sub-screen smaller in display size than the main screen, or equivalent. The two-screen display is composed of two screens of the same display size, and while the video of the first and second programs is being output in the two-screen display composed of two screens of the same display size, If it is determined that the output of the first program is to be restricted based on a comparison result between the superimposed program output restriction data and the desired restriction level, the display is switched to a two-screen display including the main screen and the sub-screen. 3. The program output control method according to claim 2, wherein the video of the second program is output on the main screen side and the output of the video of the first program is restricted on the sub screen side. 7. The program output control method according to claim 6, wherein when the output of the video of the first program is restricted on the sub-screen side, the display of the sub-screen is stopped. 8. When switching to a two-screen display consisting of the main screen and the sub-screen, based on a comparison result between program output restriction data superimposed on the first program and the desired restriction level. The method according to claim 1, wherein when it is no longer determined that the output of the first program is restricted, the display is switched to a two-screen display including two screens having the same display size and the video of the first program is output. 6. The program output control method according to item 6. 9. The method according to claim 8, wherein audio of the plurality of programs is selectable, and the program output is limited based on a comparison result between the program output restriction data superimposed on the output-restricted program and the desired restriction level. 2. The program output control method according to claim 1, wherein when it is no longer determined that the output is to be restricted, the sound of the program that is no longer determined to be the output is selected and output. 10. A signal supply means for supplying a signal of a program, a signal switching means for switching and selecting a plurality of program signals supplied from the signal supply means, Decoding means for obtaining output restriction data; screen display processing means for generating a signal for displaying a plurality of screens using signals of a plurality of programs supplied from the signal supply means; and Video output means for outputting video based on the received signal, audio output means for outputting audio based on the program signal supplied from the signal supply means, and supply of the program signal to the screen display processing means. Signal supply control means for controlling the supply of the program signal to the audio output means, and the output limiting data obtained by the decoding means. And control means for controlling the signal supply control means based on the comparison result and controlling a switching operation of the signal switching means, wherein the control means controls the signal switching means. And sequentially selecting the signals of the plurality of programs and comparing the output restriction data obtained by the decoding means with the desired restriction level to determine whether to output the video or audio of the program. A television apparatus, comprising: controlling the signal supply control means based on a comparison result to control output of video and audio based on signals of a plurality of programs supplied from the signal supply means. 11. The signal supply means supplies signals of two programs. The control means controls the screen display processing means to display the image output means on a main screen and a main screen. A two-screen display including a sub-screen having a small display size; and while displaying video of two programs by the main screen and the sub-screen, program output restriction data superimposed on the program on the main screen. If it is determined that the output of the program is to be restricted based on the result of comparison with the desired restriction level, the signal supply means is controlled and the signals of the two programs supplied to the screen display processing means are exchanged. The video of the program on the screen side is output on the main screen side, and the supply of the signal of the program determined to limit the output is stopped by the signal supply control means, and the video of the program is displayed on the sub-screen side. Television device according to claim 10, characterized in that to limit the output. 12. The control means, wherein when the output of the program is restricted on the sub-screen side, the program output restriction data superimposed on the program whose output is restricted and the desired restriction When it is no longer determined that the output of the program is limited based on the comparison result with the level, the signal of the two programs supplied to the screen display processing means is controlled by controlling the signal supply means, and the sub-screen side is switched. 2. The video of a program is output on the main screen side.
The television device according to 1. 13. The signal supply means supplies signals of two programs. The control means controls the screen display processing means to display the image output means on a main screen and a main screen. A two-screen display consisting of a sub-screen having a small display size, or a two-screen display consisting of two screens of the same display size, and displaying the images of two programs in the two-screen display consisting of two screens of the same display size If it is determined that the output of the program is to be restricted based on the comparison result between the program output restriction data superimposed on one program and the desired restriction level, the screen display processing means is controlled to control the main display. The program which is not determined to limit the output on the main screen while controlling the signal supply means and the signal supply control means while switching to a two-screen display including a screen and a sub-screen. Television device according to claim 10, characterized in that to limit the output of the sub-screen of the program that is determined to limit the output side image and outputs the image. 14. A comparison result between the program output restriction data superimposed on the program and the desired restriction level when the control means is switched to a two-screen display including the main screen and the sub-screen. Controlling the screen display processing means to switch to a two-screen display including two screens of the same display size and output the video of the program when it is no longer determined that the output of the program is restricted based on 14. The television device according to claim 13, wherein: 15. An audio output means for selecting audio of a program supplied from the signal supply means, wherein the audio output means outputs audio of the program selected by the audio selection means. In the control means, when it is no longer determined to limit the output of the program based on a comparison result between the program output limiting data superimposed on the program whose output is limited and the desired limit level, the audio selection 11. The television apparatus according to claim 10, wherein the sound of the program which is no longer determined to be controlled by controlling the output is selected.