JPH09135406A - Video display device and video signal processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically display a video signal when that video signal is inputted from an external video signal input terminal in the standstill state or even in the operation state of a video display device. SOLUTION: This device is provided with a means 13 for discriminating whether a video signal is inputted from an external video signal input terminal 7 or not and a microcomputer 6 for turning on a power supply circuit 1 of this display device when a discriminate signal showing the presence of input signal is inputted from this discriminating means 13 and for performing switching control to a video signal switching circuit 2 so as to select the video signal inputted from the external video signal input terminal 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for displaying video, for example, a video display device such as a television receiver and a power supply control device for a video signal processing device such as a personal computer having a video signal processing function, and a display. The present invention relates to a video signal switching device.

[0002]

2. Description of the Related Art FIG. 3 is a block circuit diagram of a conventional television receiver, in which ON / OFF control of a power supply circuit 1 and control of a video signal switching circuit 2 to be displayed are controlled by a remote control transmitter 3 via a wireless connection. The control signal is sent to the receiver 4, and the control signal is input from the receiver 4 to the microcomputer 6 or the control signal is input to the microcomputer 6 by the operation key 5, and the control signal of the power supply circuit 1 is input via the microcomputer 6. ON / OFF, a video input input from the external video signal input terminal 7, a UV television broadcast signal input from the UV antenna terminal 8 via the UV tuner 9, and a B input from the BS input terminal 10.
Any one of the S broadcast signals or a plurality of video signals is input to the video signal processing / deflecting circuit 11 to display a single video on the CRT 12 or a plurality of videos on a divided screen. .

[0003]

In the conventional video display apparatus, the operator has to perform the on / off control of the power supply and the switching of the video signal to be displayed one by one, so that the operation procedure becomes complicated and the infant There is a problem that it is difficult for the elderly to use.

The present invention has been made in order to solve the above problems, and the power of the display device is turned on by simply inputting the video signal to be displayed, and
An object is to obtain a video display device capable of displaying the input video signal.

[0005]

A video display device according to the present invention is a video display device for selecting and displaying a plurality of video input signals, and a determining means for determining whether or not a predetermined video signal is input. When the determination means determines that a predetermined video input signal is present, it is provided with means for controlling the power supply of the video display device to be ON, and the determination means is present when the video signal is input from the external video signal input terminal. The control means controls the power of the video display device to be turned on when the determination signal is received. Further, in a video display device for selecting and displaying a plurality of video input signals, a determination means for determining whether or not a predetermined video signal is input,
When the judging means judges that there is a predetermined video input signal, it comprises switching means for switching to display the video input signal, and the judging means inputs when a video signal is input from a predetermined external video signal input terminal. When the determination means receives the determination signal, the switching means switches to display the video signal input from a predetermined external video signal input terminal.

A video signal processing device according to the present invention is a video signal processing device for selecting and processing a plurality of video input signals, and a judging means for judging whether or not a predetermined video signal has been input. When it is determined that a predetermined video input signal is present, a means for controlling the power of the video signal processing device to be turned on is provided, and the determination means is a determination signal with an input video signal when the video signal is input from the external video signal input terminal And the control means controls to turn on the power of the video processing device when receiving the determination signal. Further, in a video signal processing device for selecting and processing a plurality of video input signals, a determination means for determining whether or not a predetermined video signal is input,
When the judging means judges that there is a predetermined video input signal, it is provided with a switching means for switching so as to process the video input signal, and the judging means inputs when a video signal is input from a predetermined external video signal input terminal. When the determination means receives the determination signal, the switching means switches to process the video signal input from the predetermined external video signal input terminal.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 is a block diagram showing a first embodiment in which the present invention is applied to a television receiver, and the same reference numerals as those in FIG. 3 denote the same or corresponding portions, and the television receiver is a microcomputer 6, Also, it is assumed that only the external input presence / absence determining circuit 13 is in a standby state, which is an operating state, by a power source (not shown).

Next, the operation will be described. Now, when the operator performs a reproduction operation on the VTR connected to the external video signal input terminal 7 and the video signal is input from the external video signal input terminal 7, the external input presence / absence determination circuit 13 causes the video signal Is input and a determination signal with an external input signal is sent to the microcomputer 6. When the microcomputer 6 receives this determination signal, it sends a control signal for turning on the power supply circuit 1 to supply power from the power supply circuit 1 to the video signal processing / deflecting circuit 11 which is the video display system circuit of the receiver. A control signal for selecting the video signal input from the external video signal input terminal 7 is sent to the video signal switching circuit 2. As a result, the video signal input to the external video signal input terminal 7 is selected by the video signal switching circuit 2, passes through the video signal processing / deflection circuit 11, and is CR.
The reproduced video signal of the VTR input to T12 and input from the external video signal input terminal 7 is displayed.

Next, the television receiver displays UV broadcast waves,
Alternatively, when the VTR playback video signal is input from the external video signal input terminal 7 while receiving the BS broadcast wave, the external input presence / absence determination circuit 13 determines that the video signal has been input, A determination signal with an external input signal is sent to the computer 6. Microcomputer 6
When receiving this determination signal, the control signal for selecting the video signal input from the external video signal input terminal 7 is sent to the video signal switching circuit 2. As a result, the CRT 12 displays the VTR reproduced video signal input from the external video signal input terminal 7.

Since the first embodiment of the present invention is configured as described above, the video signal output terminal of the VTR or the game machine is connected to the external video signal input terminal 7 through the cable to form the VTR or the game machine. When operated, the image is automatically displayed on the CRT 12 of the television receiver.
Even an infant or an elderly person can easily display an image of a VTR or a game console.

Embodiment 2. 2 is a block diagram showing a second embodiment in which the present invention is applied to a personal computer, and the same reference numerals as those in FIG. 1 denote the same or corresponding portions. In the figure, 14 is an input device such as a keyboard, 15 is a video signal processing circuit, 16 is a video signal output terminal, and 17 is a display.

Next, the operation will be described. The microcomputer 6 and the external input presence / absence determination circuit 13 are always in an operating state by a backup power supply (not shown). ON / OFF control and switching of the video signal switching circuit 2 are controlled.

Now, the power supply circuit 1 and the display 17
When the video signal of the game machine is input from the external video signal input terminal 7, the external input presence / absence determination circuit 13 outputs a determination signal indicating that the video signal is input to the microcomputer. 6, the microcomputer 6 controls the power supply circuit 1 and the display 17 to be turned on, and controls the video signal switching circuit 2 so that the video signal input from the external video signal input terminal 7 is selected. The video signal processing circuit 15 outputs this input video signal to the display 17 via the output terminal 16.
, And the display 17 displays the video.

When the microcomputer is operating and the image is displayed on the display 17, when the image signal is input from the external image signal input terminal 7, the external input presence / absence determining circuit 13 causes the image signal to be detected. Is sent to the microcomputer 6, and the microcomputer 6 controls the video signal switching circuit 2 to select the video signal input from the external video signal input terminal 7, and the selected video signal is selected. The input video signal is displayed on the display 17 via the video signal processing circuit 15.

Since the second embodiment of the present invention is configured as described above, the external video signal input terminal 7 is connected to the VTR.
When a video signal from a computer or a game console is input, the input video signal is automatically displayed on the display even when the personal computer is in the hibernation state or in operation, so that the display is configured separately. It is possible to obtain the effect that the image of the VTR or the game machine can be easily displayed by the device, even for infants and the elderly.

In the first and second embodiments, when the video signal is input from the external video signal input terminal 7, the video is automatically displayed. However, the input from the external video signal input terminal 7 is not performed. If you decline, it will automatically start,
That is, it may be configured to display the image of the hibernation state or the original input source, and the command from the remote control transmitter 3, the command from the operation key 5, or the command from the input device 14 may be used. It may be configured to display the image of the original input source or the rest state.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

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

[Explanation of symbols]

1 power supply circuit, 2 video signal switching circuit, 3 remote control transmitter, 4 remote control receiver,
5 operation keys, 6 microcomputer, 7 external video signal input terminal, 11 video signal switching circuit, 12 CR
T, 13 external input presence / absence determination circuit, 14 input device, 15 video signal processing circuit, 17 display.

Claims (4)

[Claims] 1. A video display device for selecting and displaying a plurality of video input signals, a judging means for judging whether or not a predetermined video signal is inputted, and the judging means judges that there is a predetermined video input signal. In this case, the video display device is provided with means for controlling the power of the video display device to be turned on. 2. A video display device for selecting and displaying a plurality of video input signals, a judging means for judging whether or not a predetermined video signal is inputted, and the judging means judges that there is a predetermined video input signal. In this case, the video display device is provided with a switching means for switching to display the video input signal. 3. A video signal processing apparatus for selecting and processing a plurality of video input signals, a judging means for judging whether or not a predetermined video signal is inputted, and the judging means judges that there is a predetermined video input signal. A video signal processing device comprising means for controlling the power supply of the video signal processing device to be turned on. 4. A video signal processing device for selecting and processing a plurality of video input signals, a judging means for judging whether or not a predetermined video signal is inputted, and the judging means judges that there is a predetermined video input signal. A video signal processing device comprising switching means for switching so as to process the video input signal.