JPH11122557A - Video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select quickly a prescribed display image and to display it in the case of selecting a video signal source displayed on the video display device that displays a wide image or the like. SOLUTION: A display screen mode changeover section 1 displays a video signal S1 by selecting a display screen such as a wide screen. A remote controller 7 or the like selects and designates the selection of a display screen image mode. An MPU 4 selects a channel or the like according to a procedure by a channel/signal source changeover processing section 8a and writes a kind of the video signal judged by a video signal kind judging section 3 to a storage section 5. Furthermore, a display screen mode setting processing section 8b selects a display screen mode entered by the remote controller 7 and the image is displayed on a PDP 2 and the display screen mode is written in the storage section 5 in cross reference with the channel/signal source. After selecting other channel/signal source, when the concerned channel/signal source is selected, the display screen mode designated for the changeover is switched immediately.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video display device which can quickly set a predetermined display screen according to the type of a video signal when a channel or a signal source is switched.

[0002]

2. Description of the Related Art A video signal from a television or a video is NT
It includes various video signals such as CS system and MUSE system, and accordingly, the display screen of the video display device is also extended at both ends of wide screen display such as MUSE system and NTSC system whose aspect ratio is 4: 3. Various display screens, such as a wide screen display, can be displayed. Normally, when the type of the input video signal is changed by switching the channel or the signal source, the display screen is set to a predetermined default display screen, a new video signal type is detected therefrom, and the type is set. The display screen mode is switched to the display screen mode that matches the type of the video signal to be received so that the display screen matches the type of the received video signal. However, in this case, it takes several seconds to detect a new video signal type, and there is a problem that a display screen suitable for the video signal type cannot be obtained immediately.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and when a video signal source to be displayed on a video display device capable of displaying a wide screen or the like is switched, the display is quickly switched to a predetermined display screen. It is intended to be displayed.

[0004]

A plurality of types of video signals are input from a television or a video and the aspect ratio is 4: 3.
In a video display device that switches and displays a plurality of display screens such as a normal screen and a 16: 9 wide screen, a storage unit that stores a display screen mode for each type of video signal, and a storage unit that is selected from the storage unit A display screen mode setting means is provided for reading out the display screen mode corresponding to the type of the video signal, switching to the display screen mode, and updating and writing the designated display screen mode, and switching the type of the video signal by channel switching or the like. At the time, the display screen mode previously specified for the type of the video signal is set.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram of one embodiment of a video display device according to the present invention. A video signal S1 of various types is input from a television or a video, and the display screen mode switching unit 1 switches to a plurality of display screens such as a normal screen having an aspect ratio of 4: 3 and a wide screen of 16: 9. The image is displayed on the PDP 2 capable of displaying a 16: 9 wide screen. The viewer selects a channel of the video signal S1 input from the remote controller 7 or the like, or a signal source such as a video. Furthermore, a display screen is designated from the remote control 7 according to a preference,
For example, a video signal having an aspect ratio of 4: 3 is switched to a display screen mode such as a screen in which the left and right ends are extended non-linearly or a 16: 9 wide screen, and displayed. MPU4 is
According to the procedure of the channel / signal source switching processing section 8a,
By controlling a tuner section and a signal source switching section (not shown),
Switching to the channel or signal source selected by the remote controller 7, and writing the code representing the type of the video signal determined from the synchronization frequency or the like in the switched channel / signal source and video signal type determination unit 3 to the storage unit 5. . MPU4
Further, the display screen mode switching section 1 is controlled in accordance with the procedure of the display screen mode setting processing section 8b to switch to the display screen mode input from the remote controller 7 and to display the PDP.
2 and the code representing the display screen mode is made to correspond to the code representing the previous channel / signal source.
Write to the storage unit 5. When the viewer switches to another channel or the like after switching to another channel or the like,
The channel / signal source switching unit 8a switches to the channel / signal source, and the display screen mode switching processing unit 8b reads a code representing the display screen mode corresponding to the channel / signal source from the storage unit 5 according to the procedure. Then, the display screen mode switching unit 1 is controlled to immediately switch to the display screen mode designated to be previously switched. When the type of the input video signal S1 determined by the video signal type determination unit 3 changes, the mode is switched to the corresponding display screen mode.

The video display device is provided with a clock 6 as time measuring means, and the storage unit 5 stores the code of the display screen mode designated by the remote controller 7 and the time designated by the switch. When the channel is switched by the remote controller 7, the display screen mode switching processing unit sets the display screen mode code in advance by referring to the time stored in the storage unit 5 when the display screen mode is switched. If it is older than the predetermined time, it is assumed that the type of the video signal of the same channel has changed, and the mode is switched to the default display screen mode stored in the storage unit 5 in advance.

The remote controller 7 is provided with an input unit for a default display screen mode. When the remote controller 7 receives an input for setting a default display screen mode, the MPU 4
Is to set a default display screen mode for each channel and signal source in the storage unit 5 by the procedure of the default display screen mode setting processing unit 8c, and to set a normal display screen mode according to the viewer's preference. Can be set. Also, a tuner different from the tuner that obtains the video signal S1 is provided in a television signal receiving unit (not shown) of the video display device, and the tuner is switched every predetermined time and stored in the storage unit 5 described above. The display screen mode for each channel is rewritten according to the type of the newly obtained video signal, so that when the channel is switched from the remote controller 7, the display screen mode is always optimum for the channel. You can also.

[0008]

As described above, a plurality of display screens such as a normal screen having an aspect ratio of 4: 3 and a wide screen having a 16: 9 aspect ratio are input by inputting a plurality of types of video signals from a television or a video. Storage means for storing a display screen mode for each type of video signal, and a display screen mode corresponding to the selected video signal type is read out from the storage means to display the display screen. A display screen mode setting means is provided for switching to the mode and updating and writing the specified display screen mode, and when the type of the video signal is switched by channel switching or the like, the display screen mode previously specified for the type of the video signal is set. By doing so, it is possible to immediately set the display screen to the type of video signal even when the channel or signal source is switched. That.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of an embodiment of a video display device according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 display screen mode switching unit 2 PDP 3 video signal type determination unit 4 MPU 5 storage unit 6 clock 7 remote controller 8a channel / signal source switching processing unit 8b display screen mode setting processing unit 8c default display screen mode setting processing unit S1 video signal

Claims (4)

[Claims] 1. An image processing apparatus according to claim 1, wherein a plurality of types of video signals are input from a television, a video, or the like.
In a video display device which switches and displays a plurality of display screens such as a 6: 9 wide screen, a storage means for storing a display screen mode for each type of video signal, and a type of video signal selected from the storage means Display screen mode setting means for reading out the display screen mode corresponding to, switching to the display screen mode and updating and writing the specified display screen mode, and when the type of the video signal is switched by channel switching or the like, An image display device characterized by setting a display screen mode specified by the type of the image display device. 2. The video display device further comprises a timekeeping means, and stores the display screen mode to be stored and a time at which the display screen mode is switched to the storage means in the storage means.
The setting of the display screen mode at the time of switching the type of the video signal is such that after a lapse of a predetermined time after switching to the display screen mode, the display screen is switched to a default display screen preset for each type of the received video signal. The video display device according to claim 1, wherein: 3. The video display device according to claim 2, further comprising input setting means for setting the default display screen mode, so that a display screen can be switched and set for each type of video signal to be received. 4. A television signal receiving section of the video display device is provided with a separate tuner, the tuner is switched at predetermined time intervals, and the storage means is adapted to display a display screen adapted to a type of a video signal received by the tuner. 3. The video display device according to claim 2, wherein the video display device is rewritten into a mode.