JPH08307792A - Image display audio output device - Google Patents

Abstract

(57) [Abstract] [Purpose] On a television receiver or the like, when a plurality of images are simultaneously displayed on a plurality of screens on the display screen of the image display means, a screen for the viewer not actually watching. The power is not turned off when only the video signal corresponding to (5) becomes no signal, so that the viewer can continue to see the screen that was being viewed until then. [Configuration] The control unit 70, at the time of the dual-screen display mode, based on the outputs of the no-signal detection units 61 and 62 and the switching state of the switch 51, at least the television signal of which sound is output from the speaker 54. Only when there is no signal, the relay switch 103 is turned off. When only the television signal of the one in which no sound is output from the speaker 54 becomes no signal, the relay switch 103
Do not turn off.

Description

Detailed Description of the Invention

[0001]

This invention relates to a CRT (cathode ray tube).
The present invention relates to an image display / audio output device such as a television receiver capable of simultaneously displaying a plurality of images on a plurality of screens on a display screen of an image display means such as a display or a liquid crystal display.

[0002]

2. Description of the Related Art A television signal of a current standard television system such as the NTSC system is received, and C
As an image display means such as an RT display, the aspect ratio (horizontal-to-vertical ratio of the display screen) is longer than 4: 3 which is that of the current standard television system, and HDTV (high-definition television) such as a high-definition system. The television receiver using 16: 9 which is the one of the () system is becoming widespread as a wide television or a landscape television.

Further, in particular, as one kind of this wide television, for example, two tuners can simultaneously receive a two-channel television signal, whereby two images are displayed on two screens on the display screen of the image display means. A television receiver capable of displaying simultaneously is commercially available as a dual-screen television.

Typical display modes of dual-screen display on a dual-screen television include so-called picture-in-picture and picture-and-picture. Hereinafter, the former is referred to as PinP mode and the latter is referred to as P & P mode.

In the PinP mode, for example, as shown in FIG. 4, a part 1M of a display screen 1 having an aspect ratio of 16: 9 except a part 1S is used as a parent screen, and the part 1S is used as a child screen. Images are simultaneously displayed on the master screen 1M and the slave screen 1S. The aspect ratio of the small screen 1S is, for example, 4: 3.

Although not shown, the part of the display screen 1 excluding the left and right parts, which has an aspect ratio of 4: 3, excluding the part which becomes the internal child screen is the parent screen, and the left and right parts of the display screen 1 are displayed. Part of each may be a non-image part.

In the P & P mode, for example, as shown in FIG. 5, portions 1L and 1R having an aspect ratio of 4: 3 on the left and right of the display screen 1 having an aspect ratio of 16: 9 are used as left and right screens, respectively. Images are simultaneously displayed on the left screen 1L and the right screen 1R, respectively. The upper part 1u and the lower part 1v of the display screen 1 are non-image parts.

By the way, when the television signal which has been received until then becomes no signal on the television receiver due to the end of broadcasting at midnight or the like, it is automatically detected about 10 minutes later, for example. In some cases, the receiver is placed in a standby state, that is, the same state as when the power is turned off by the power button of the remote control device of the receiver.

Even a dual-screen television capable of adopting the PinP mode is considered to have such a so-called auto shut-off function, and one television signal is received to display one image on the display screen. In the normal mode for displaying, when one of the television signals becomes no signal, and in the PinP mode, the television signal for which the image is displayed on the parent screen becomes no signal. At each time, the above-mentioned auto shut-off function works effectively.

[0010]

In the PinP mode, the main screen is the main screen and the sub-screen is the sub-screen. There is a clear distinction between the master screen and the sub-screen, and the viewer usually sees the parent screen. Looking at the screen. Therefore, even if the television receiver is put in the standby state when the television signal of the one whose image is displayed on the main screen becomes non-signal as described above, there is not much inconvenience to the viewer.

However, recently, a receiver capable of adopting the P & P mode as described above has been considered. And this P & P
In the mode, there is no distinction between the master screen and the sub screen such as the master screen and the slave screen in the PinP mode between the two screens, the left screen and the right screen. . That is, when the viewer is looking at the left screen, the left screen is the main screen, and conversely, when the viewer is looking at the right screen, the right screen is the main screen.

Therefore, in a receiver which can be in the P & P mode, one of the two screens in the P & P mode is uniquely defined as the main screen and the image is displayed on the main screen. By setting the receiver to the standby state as described above when the television signal becomes silent, the image is displayed on the main screen when the viewer is looking at the screen other than the main screen. When the television signal of the person being watched becomes null, the receiver is put into a standby state, which is extremely inconvenient for the viewer.

Therefore, the present invention is an image display audio output device such as a television receiver capable of simultaneously displaying a plurality of images on a plurality of screens on the display screen of the image display means. When multiple images are displayed on the screen at the same time, the device will automatically enter the standby state only when the video signal corresponding to the screen of the viewer is actually no signal. It is a thing.

[0014]

According to a first aspect of the present invention, a plurality of video signals and a plurality of audio signals corresponding thereto can be received, or externally input, or internal as an image display audio output device. And a process for simultaneously displaying a plurality of images by a plurality of video signals from the signal input unit on a plurality of screens set on the display screen of the same image display unit as the signal input unit that can be generated by A screen processing unit, an audio output unit that obtains an audio signal corresponding to any one of the plurality of screens from the signal input unit, and outputs audio by the audio signal, the signal input unit, and the screen A control unit for controlling the processing unit and the voice output unit is provided, and when the control unit is simultaneously displaying a plurality of images on the plurality of screens, at least the screen on which the sound is output is displayed. Only when the video signal response becomes no signal, to turn off the power supply of the device, and things.

According to the second aspect of the invention, as the image display audio output device, a plurality of video signals and a plurality of audio signals corresponding thereto can be received or can be input from the outside.
Alternatively, a process for simultaneously displaying a plurality of images by a plurality of video signals from the signal input unit on a plurality of screens set on the display screen of the same image display unit as the signal input unit that can be generated internally A plurality of audio signals are obtained from the screen processing unit that performs the above-mentioned operation and the signal input unit so that one audio signal corresponding to one of the plurality of screens has a relative maximum level, and the plurality of audio signals are obtained. A voice output unit that outputs a plurality of voices by a voice signal, and a control unit that controls the signal input unit, the screen processing unit, and the voice output unit are provided,
When a plurality of images are simultaneously displayed on the plurality of screens by the control unit, at least when the video signal corresponding to the screen on which the sound is output at the maximum volume is no signal. Only the device shall be powered off.

[0016]

When a plurality of images are simultaneously displayed on a plurality of screens on the display screen, what the viewer is actually seeing is that the sound is being output or the sound has a relatively maximum volume. This is the screen output by.

In the image display audio output device of the present invention configured as described above, when a plurality of images are simultaneously displayed on a plurality of screens on the display screen, the control section outputs audio. It is indirectly determined whether the screen is the screen that the viewer is actually watching, depending on whether the screen is the one that the viewer is listening to, or the screen that the sound is output at the maximum volume. The Rukoto.

Then, the power supply of the apparatus is turned off only when the video signal corresponding to the screen of at least the one outputting the sound or the one outputting the sound at the maximum volume becomes silent. By doing so, the power of the device is turned off only when the video signal corresponding to the screen of the viewer is actually no signal,
The power supply of the device is not turned off when only the video signal corresponding to the screen that the viewer is not actually watching becomes a non-signal.

[0019]

【Example】

[Structure of Embodiments] FIG. 1 shows an example of an image display / audio output device of the present invention, in which two tuners can simultaneously receive two-channel television signals, whereby the above-mentioned P & P mode or PinP mode can be received. This is the case of a so-called dual-screen wide television capable of displaying two images simultaneously on two screens on the display screen depending on the mode.

The television receiver of this example includes an antenna 10, tuners 21 and 22, video processing units 31 and 32, a screen processing unit 40, a video amplifier 33, a CTR 34 as image display means, and a switch 51 for switching audio signals. , Audio processing unit 52, audio amplifier 53, speaker 54 as audio output means, no-signal detecting units 61 and 62, control unit 70, crystal oscillator 81, non-volatile memory 82, receiving unit 83, remote control device 90, and A power supply unit 100 is provided.

Each of the tuners 21 and 22 includes an intermediate frequency amplifier circuit and a demodulator circuit, and a signal for determining a frequency division ratio from a control unit 70 to a PLL (phase synchronization circuit) which constitutes an internal local oscillation circuit. Is supplied to select the television signal of the desired channel, and the intermediate frequency signal after the selection is amplified and then demodulated to obtain the video signals V1 and V2 and the audio signal A, respectively.
1 and A2 are obtained separately.

As will be described later, the tuner 21 obtains a video signal and an audio signal for one screen in the normal mode, the right screen in the P & P mode, and the main screen in the PinP mode.
2 obtains a video signal and an audio signal for the left screen in the P & P mode and the sub-screen in the PinP mode.

The video processing units 31 and 32 process the video signals V1 and V2 from the tuners 21 and 22, respectively, to make them red and
It obtains green and blue primary color video signals.

Based on the control signal CTL from the control unit 70, the screen processing unit 40 displays the CTR 34 according to each display mode from the red, green and blue primary color video signals from the video processing units 31 and 32, respectively. It generates red, green, and blue primary color video signals for an image to be displayed on the screen. In the screen processing unit 40, a signal OSD, which is a primary color signal of red, green, or blue from the control unit 70, and which indicates a channel number or volume to be displayed on the display screen of the CTR 34, is added to the video signal.

The image amplifier 33 amplifies the red, green, and blue primary color image signals from the screen processing section 40 and supplies them to the CTR 34 as drive signals for the CTR 34. CTR3
4, the aspect ratio of the display screen 1 is 16: 9 as shown in FIGS. 4 and 5.

The switch 51 selects and takes out one of the audio signals A1 and A2 from the tuners 21 and 22 in response to a switching signal from the control unit 70, as will be described later. The audio processing unit 52 processes the audio signal A1 or A2 selected by the switch 51, and outputs the audio amplifier 53.
Amplifies the audio signal from the audio processing unit 52 and supplies it to the speaker 54.

The no-signal detectors 61 and 62 are provided with the video signals V1 and V obtained through the video processors 31 and 32, respectively.
It is to detect whether the video signals V1 and V2 are non-signals from the sync signal in 2 and supply the respective detection outputs to the control unit 70.

The control unit 70 is composed of a microcomputer, and includes tuning in the tuners 21 and 22, processing in the screen processing unit 40, and switching of the switch 51 based on a control signal from a remote control device 90 described later. In addition to controlling the entire receiver, in the P & P mode or in the PinP mode, the switching state of the switch 51, that is, the two-screen state such as which screen the sound is output from the speaker 54 is. A relay switch 10 of the power supply unit 100 that is managed and described later.
Control 3

The crystal oscillator 81 is for clock generation, and the nonvolatile memory 82 is for the P & P mode or Pin.
The two-screen state and the like in the P mode are stored. The reception unit 83 receives a control signal, for example, from infrared rays from the remote control device 90 and supplies the control signal to the control unit 70.

The remote control device 90 has a power button 91, a display mode selection button 92 and the like. By depressing the display mode selection button 92, the display mode can be cyclically changed in the order of normal mode → P & P mode → PinP mode → normal mode. Then, the remote control device 90 can perform a tuning operation in each mode as described later and can select a sound corresponding to any one screen.

In the power supply section 100, the AC power from the power plug 101 is supplied to the power supply circuit 102, and is also supplied to the power supply circuit 104 via the relay switch 103.
DC power from the power supply circuit 102 is supplied to the control unit 70 and the receiving unit 83, various DC power from the power supply circuit 104 is supplied to each unit of the image receiver including the CTR 34, and a relay control signal from the control unit 70 is supplied. The relay switch 103 is controlled by the RCT. The power switch 105 is provided on the front panel of the receiver or the like, and controls the power supply of the control unit 70 and the reception unit 83 to on / off.

FIG. 2 shows an example of the screen processing section 40 of the receiver of FIG. In this example, red, green, and blue primary color video signals R1, G1, and B1 from the video processing units 31 and 32, respectively.
And R2, G2, B2 are A / D converters 41R, 41G, 41B and 42R, 42G, 42B, respectively.
The memory 4 in which the red, green, and blue primary color video signals, which are converted into digital signals by, can write signals for one field or one frame, respectively.
3R, 43G, 43B and 44R, 44G, 44B, and memory 43R, 43G, 43B
And 44R, 44G, and 44B, the read red, green, and blue primary color video signals are combined in a combining processing circuit 45, and the combined red, green, and
The blue primary color video signal is transferred to the D / A converters 46R and 46R.
The red, green, and blue primary color video signals converted into analog signals by G and 46B are supplied to the video amplifier 33.

Then, the control signal CTL from the control unit 70.
The memory 43R, 43G, 43B, 44R, 44
The write control circuit 47 and the read control circuit 48 for G and 44B are controlled, and the memories 43R, 43G, and 4 are controlled.
Writing to 3B, 44R, 44G, and 44B and reading from the memories 43R, 43G, 43B, 44R, 44G, and 44B are controlled, and the synthesis processing circuit 45 is also provided.
By controlling the synthesizing process in, the screen process according to each display mode is performed as described later.

[Operation in P & P Mode] In the image receiver having the above-described structure, when images are simultaneously displayed on the right screen 1R and the left screen 1L of the display screen 1 of the CTR 34 as shown in FIG. In the remote control device 90, the P & P mode is selected by operating the display mode selection button 92, and the right screen 1R and the left screen 1L are individually selected.

As a result, the tuner 21 receives a television signal for displaying an image on the right screen 1R,
A signal corresponding to the right screen 1R is obtained from the tuner 21 as the video signal V1 and the audio signal A1.
From which red, green, and blue primary color video signals R1, G1, and B1 corresponding to the right screen 1R are obtained, and a tuner 22 receives a television signal for displaying an image on the left screen 1L, and receives from the tuner 22. As the video signal V2 and the audio signal A2, those corresponding to the left screen 1L are obtained, and the red, green, and blue primary color video signals R are obtained from the video processing unit 32.
2, G2 and B2 corresponding to the left screen 1L are obtained.

Then, in the screen processing section 40, the primary color video signals R1, G1 and B1 are converted into A / D converters 41R and 4R.
The signals are converted into digital signals by 1G and 41B and written in the memories 43R, 43G and 43B, and the primary color video signals R2, G2 and B2 are converted into A / D converters 42R and
It is converted into a digital signal by 42G and 42B and written in the memories 44R, 44G and 44B.

Further, simultaneously with the writing, the memory 4
The primary color video signals digitized from 3R, 43G and 43B are read out so as to form the right screen 1R having the position and size as shown in FIG. 5 on the display screen 1 of the CTR 34, and the memories 44R, 44G and 44B. The primary color video signal digitized from is displayed on the display screen 1 of the CTR 34 at the position and size as shown in FIG.
Read to form L.

Then, in the synthesizing circuit 45, the primary color video signals read from the memories 43R, 43G and 43B and the primary color video signals read from the memories 44R, 44G and 44B are synthesized, and the primary color video signals after the synthesis are synthesized. Is D /
It is converted into an analog signal by the A converters 46R, 46G and 46B.

Therefore, the image by the television signal received by the tuner 21 is displayed on the right screen 1R on the display screen 1, and at the same time, the image by the television signal received by the tuner 22 is displayed on the left screen 1L. It

In this case, the sound corresponding to the right screen 1R or the left screen 1L is selected by operating the remote control device 90. As a result, the tuner 2 is switched from the switch 51.
Either the audio signal A1 from 1 or the audio signal A2 from the tuner 22 is selected and taken out.

That is, when the sound corresponding to the right screen 1R is selected, the switch 51 is switched to the tuner 21 side, the sound signal A1 is taken out from the switch 51, and the image displayed on the right screen 1R from the speaker 54. The sound corresponding to is output. When the sound corresponding to the left screen 1L is selected, the switch 51 is switched to the tuner 22 side, the sound signal A2 is extracted from the switch 51, and the sound corresponding to the image displayed on the left screen 1L is output from the speaker 54. Is output.

In this state, the control section 70 monitors whether the television signals received by the tuners 21 and 22 become a no signal by the outputs of the no signal detecting sections 61 and 62, and as shown below, The relay switch 103 is turned off by the relay control signal RCT and the receiver is put into the standby state only when the television signal from which the speaker 54 outputs a sound becomes a non-signal.

That is, FIG. 3 shows a routine according to the present invention which is executed by the control unit 70.
First, in step S1, it is determined whether or not it is currently in the dual-screen display mode of the P & P mode or the PinP mode, and if it is not the dual-screen display mode, the process proceeds to step S4 to execute other processing such as channel selection processing. , Step S
Return to 1.

In the two-screen display mode, the process proceeds to step S2, and at least one of the sounds output from the speaker 54 is selected from the outputs of the no-signal detectors 61 and 62 and the switching state of the switch 51. It is determined whether or not the television signal is no signal, and when the television signal of which the sound is output from the speaker 54 is not no signal, the process proceeds to step S4 to execute other processing. , And returns to step S1.

When at least the television signal from which the sound is output from the speaker 54 becomes no signal, the process proceeds to step S3 to execute the auto shut-off process. That is, as described above, the relay control signal R
The relay switch 103 is turned off by CT.

Therefore, when the viewer looks at the right screen 1R and listens to the sound corresponding to the right screen 1R, at least when the television signal corresponding to the right screen 1R becomes silent, or Is looking at the left screen 1L and listening to the sound corresponding to the left screen 1L, at least when the television signal corresponding to the left screen 1L becomes null, the control unit 70 and the receiving unit 83 are excluded. The receiver power is turned off.

On the other hand, the viewer looks at the right screen 1R,
While listening to the sound corresponding to the right screen 1R, when only the television signal corresponding to the left screen 1L becomes no signal, or when the viewer looks at the left screen 1L and hears the sound corresponding to the left screen 1L. When only the television signal corresponding to the right screen 1R is silent during listening, the power of the receiver including the control unit 70 and the receiving unit 83 is not turned off. Therefore, the viewer can view the images and sounds that he / she has been viewing until then.

[Operation in PinP Mode] As shown in FIG. 4, the parent screen 1M and the child screen 1 of the display screen 1 of the CTR 34 are shown.
When images are to be simultaneously displayed on S, the remote control device 90 selects the PinP mode by operating the display mode selection button 92, and selects the main screen 1M and the sub screen 1S respectively.

As a result, the tuner 21 receives a television signal for displaying an image on the main screen 1M,
A signal corresponding to the parent screen 1M is obtained from the tuner 21 as the video signal V1 and the audio signal A1.
From the red, green, and blue primary color video signals R1, G1, and B1 corresponding to the main screen 1M are obtained, and the tuner 22 receives a television signal for displaying an image on the sub screen 1S. A video signal V2 and an audio signal A2 corresponding to the sub-screen 1S are obtained, and the red, green, and blue primary color video signals R are output from the video processing unit 32.
2, G2, B2 corresponding to the sub-screen 1S are obtained.

Then, in the screen processing section 40, the primary color video signals R1, G1 and B1 are converted into A / D converters 41R and 4R.
The signals are converted into digital signals by 1G and 41B and written in the memories 43R, 43G and 43B, and the primary color video signals R2, G2 and B2 are converted into A / D converters 42R and
It is converted into a digital signal by 42G and 42B and written in the memories 44R, 44G and 44B.

At the same time as the writing, the memory 4
The primary color video signals digitized from 3R, 43G and 43B are read out so as to form the master screen 1M having the position and size as shown in FIG. 4 on the display screen 1 of the CTR 34, and the memories 44R, 44G and 44B. A primary color video signal digitized from the sub-screen 1 of the CTR 34 has a position and size as shown in FIG.
Read to form S.

Then, the synthesizing circuit 45 synthesizes the primary color video signals read from the memories 43R, 43G and 43B and the primary color video signals read from the memories 44R, 44G and 44B, and the synthesized primary color video signals. Is D /
It is converted into an analog signal by the A converters 46R, 46G and 46B.

Therefore, an image by the television signal received by the tuner 21 is displayed on the main screen 1M on the display screen 1, and at the same time, an image by the television signal received by the tuner 22 is displayed on the child screen 1S. It

In this case, by operating the remote control device 90, the voice corresponding to the main screen 1M or the sub screen 1S is selected. As a result, the tuner 2 is switched from the switch 51.
Either the audio signal A1 from 1 or the audio signal A2 from the tuner 22 is selected and taken out.

That is, when the sound corresponding to the main screen 1M is selected, the switch 51 is switched to the tuner 21 side, the audio signal A1 is taken out from the switch 51, and the image displayed on the main screen 1M from the speaker 54. The sound corresponding to is output. When the sound corresponding to the small screen 1S is selected, the switch 51 is switched to the tuner 22 side, the sound signal A2 is extracted from the switch 51, and the sound corresponding to the image displayed on the small screen 1S is output from the speaker 54. Is output.

In this state, the control unit 70 monitors whether the television signals received by the tuners 21 and 22 are no signals by the outputs of the no signal detection units 61 and 62, and P &
Similar to the P mode, the relay control signal RCT causes the relay switch 103 only when the television signal output from the speaker 54 has no signal.
Turn off and set the receiver to the standby state.

Therefore, when the viewer sees the main screen 1M and listens to the sound corresponding to the main screen 1M, at least when the television signal corresponding to the main screen 1M becomes silent, or While watching the sub-screen 1S and listening to the sound corresponding to the sub-screen 1S, at least when the television signal corresponding to the sub-screen 1S becomes no signal, the image receiving except the control unit 70 and the receiving unit 83 is performed. The machine is turned off.

On the other hand, the viewer looks at the main screen 1M,
When listening to the sound corresponding to the master screen 1M, when only the television signal corresponding to the slave screen 1S becomes silent, or when the viewer looks at the slave screen 1S and hears the sound corresponding to the slave screen 1S. When only the television signal corresponding to the main screen 1M becomes silent during listening, the power of the receiver including the control unit 70 and the receiving unit 83 is not turned off. Therefore, the viewer can view the images and sounds that he / she has been viewing until then.

[Operation in Normal Mode] Although not shown, when displaying one image on the display screen 1, the normal mode is selected by operating the display mode selection button 92 in the remote control device 90. At the same time, perform tuning operation.

As a result, the tuner 21 receives the television signal, and the tuner 21 receives the video signal V1.
And the audio signal A1 is obtained, and the video processing unit 31 outputs red,
Green and blue primary color image signals R1, G1, B1 are obtained.

Then, in the screen processing section 40, the primary color video signals R1, G1 and B1 are converted into A / D converters 41R and 4R.
It is converted into a digital signal by 1G and 41B and written in the memories 43R, 43G and 43B. Further, simultaneously with the writing, the digitized primary color video signals from the memories 43R, 43G and 43B are displayed on the display screen 1 as 1
Memory 43, which is read to form one image
The primary color video signals read from R, 43G and 43B are
It is taken out through the synthesis processing circuit 45 and converted into an analog signal by the D / A converters 46R, 46G and 46B.

Therefore, the tuner 21 is displayed on the display screen 1.
The image based on the television signal received in is displayed.

In this case, the audio signal A1 from the tuner 21 is taken out from the switch 51. That is, in the normal mode, the switch 51 is switched to the tuner 21 side, the audio signal A1 is taken out from the switch 51, and the audio corresponding to one image displayed on the display screen 1 is output from the speaker 54.

In this case, the control unit 70 puts the receiver in the standby state when the television signal received by the tuner 21 becomes no signal.

[Other Embodiments] The examples shown in FIGS. 1 to 5 and described above are the cases of the image receiver capable of adopting the two-screen display mode such as the P & P mode or the PinP mode.
For example, as shown in FIG. 6, a large number of screens 1 are displayed on the display screen 1.
A, 1b, 1c ... 1k, 1m can be set, and the invention can also be applied to a receiver capable of adopting a multi-screen display mode for displaying an image on each.

In the above-mentioned example, the speaker 54 outputs only the sound corresponding to one screen in both the P & P mode and the PinP mode. However, in the P & P mode or the PinP mode, one screen is displayed. The corresponding voices are output at a relatively high volume and the voices corresponding to the other screen are output at a relatively low volume by mixing them and outputting them from the same audio output means, or by mixing them and outputting them from separate audio output means. It is also possible.

The present invention can also be applied to the case where a plurality of voices corresponding to a plurality of screens are output so that any one of them has a relatively maximum volume. That is, in this case, what the viewer actually sees is the screen on which the sound is output at the maximum volume, and the volume state is the control unit that receives the control signal from the remote control device. Can be managed in.

Therefore, in this case, when the plurality of images are simultaneously displayed on the plurality of screens on the display screen, the control unit at least outputs the sound at the maximum volume of the television. It is determined whether or not the signal becomes no signal, and at least only when the television signal for which the sound is output at the maximum volume becomes no signal, the control unit and the remote control device can Turn off the power of the receiver except the control signal receiver.

The video signal for displaying an image on the display screen and the corresponding audio signal for outputting the audio from the audio output means are not limited to the video signal and the audio signal received as the television signal. Video and audio signals from external devices such as video tape recorders,
It may be a video signal and an audio signal generated in the device.

[0070]

As described above, according to the present invention, when a plurality of images are simultaneously displayed on a plurality of screens on the display screen of the image display means, the screen which the viewer does not actually see. When there is no signal corresponding to the video signal corresponding to, the power of the device is not turned off, and the viewer can continue to see the screen that had been viewed until then.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an example of an image display / audio output device of the present invention.

FIG. 2 is a functional block diagram showing an example of a screen processing unit.

FIG. 3 is a flowchart showing a routine according to the present invention in the control unit.

FIG. 4 is a diagram for explaining a PinP mode.

FIG. 5 is a diagram for explaining a P & P mode.

FIG. 6 is a diagram for explaining a multi-screen display mode.

[Explanation of symbols]

 21, 22 Tuner (Signal Input Unit) 34 CRT (Image Display Unit) 40 Screen Processing Unit 51 Switch (Audio Output Unit) 52 Audio Processing Unit (Audio Output Unit) 54 Speaker (Audio Output Unit) 70 Control Unit

Claims (5)

[Claims] 1. A signal input unit capable of receiving a plurality of video signals and a plurality of audio signals corresponding thereto, capable of being input from the outside, or capable of being internally generated, and on a display screen of the same image display means. A screen processing unit that performs processing for simultaneously displaying a plurality of images by a plurality of video signals from the signal input unit on the plurality of screens set to Or 1
A voice output unit that obtains a voice signal corresponding to one of the voice signals and outputs a voice based on the voice signal; and a control unit that controls the signal input unit, the screen processing unit, and the voice output unit. When simultaneously displaying multiple images on the multiple screens described above, turn off the power to the device only when the video signal corresponding to the screen from which audio is being output becomes silent. Image display audio output device. 2. A plurality of video signals and a plurality of audio signals corresponding thereto can be received, can be input from the outside, or can be generated internally, and on the display screen of the same image display means. A screen processing unit that performs processing for simultaneously displaying a plurality of images by a plurality of video signals from the signal input unit on a plurality of screens set to, and a plurality of audio signals from the signal input unit. An audio output unit that obtains one audio signal corresponding to one of the screens so as to have a relatively maximum level, and outputs a plurality of sounds by the plurality of audio signals; the signal input unit; A control unit that controls the screen processing unit and the audio output unit; and when the plurality of images are simultaneously displayed on the plurality of screens, at least the sound is output at a relatively maximum volume. Video signal corresponding to the screen of the person who is only when it becomes a no-signal, to turn off the power supply of the device, an image display audio output device. 3. The image display / audio output device according to claim 1, wherein the plurality of screens are in a display mode in which two screens of the same size are located on the left and right parts of the display screen. Image display audio output device. 4. The image display audio output device according to claim 1, wherein the plurality of screens can be in a display mode in which one screen is smaller than the other screen and two screens are located inside the other screen. Image display audio output device. 5. The image display / audio output device according to claim 1, wherein the plurality of screens are two screens of the same size located on the left and right portions of the display screen, An image display audio output device capable of selectively taking one of a plurality of screens, one of which is smaller than the other and a display mode in which two screens are located inside the other.