JP2003150140A - Antiseize device for screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a CCTV device in which an image sticking phenomenon on screen of display is reduced and the service life of the light emission life of a phosphor is prolonged. SOLUTION: On the screen of the display, a fixed image is not displayed in a prescribed position at all the times but is switched to a screen saver at the interval of a prescribed time so that the image sticking on the screen can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CCTV device, and more particularly to an image display function of the CCTV device.

[0002]

2. Description of the Related Art Displaying a fixed image on a CCTV device is
It was displayed still at a predetermined position on the screen of a display unit such as a plasma display. For example, in the surveillance camera device, a fixed place is always imaged and a substantially fixed image is displayed on the display.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
When a fixed image is constantly displayed at a predetermined position on the screen of the display, deterioration of the light emission of the phosphor progresses in the high-brightness part of the image, which causes a difference in brightness from the non-lighting part. However, there is a drawback that a phenomenon (burn-in phenomenon) that remains on the screen as it is occurs. Therefore, the burn-in phenomenon has been a major cause of impeding the prolongation of light emission life of the phosphor of the display. SUMMARY OF THE INVENTION It is an object of the present invention to provide a CCTV device which eliminates the above-mentioned drawbacks, reduces the screen burn-in phenomenon of a display, and has a long emission life of a phosphor.

[0004]

In order to achieve the above object, the CCTV device of the present invention is
The fixed image is not always displayed at a predetermined place, but a screen saver is switched at a predetermined time to reduce image sticking on the screen.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a CCT according to an embodiment of the present invention.
It is a block diagram showing a basic configuration of a V device. 1 is T
V camera, 2 is a screen protector that creates a screen saver, and 3 is a display that displays images. Indicator 3
Is, for example, a plasma display. In Fig. 1, the anti-seizure device 2 measures the normal operation of the TV camera 1 and measures the time from the moment when no operation such as video switching is performed, and when a certain time (for example, 3 minutes) elapses, the character is displayed. It has a function to automatically display a screen saver with a mark on the screen of Display 3. This screen saver function moves the display position of the display unit 3 on the screen so that it does not always stay in one place.

That is, the TV camera 1 acquires an image in the field of view for imaging, converts it into a video signal, and outputs it to the display device 3 via the burn-in prevention device 2. The image sticker 2 superimposes characters on the video signal and outputs it to the display 3. display
3 displays the input video signal and characters on the screen. The image sticking prevention device 2 is provided with at least one of a character and a graphic superimposed on the image, and moves and displays at least one of the character and the graphic on the screen of the display 1 at a predetermined time interval.

FIG. 2 is a diagram showing a display example of the screen saver function on the screen of the display 3 according to the embodiment of the present invention. 3 is a display for displaying an image, 4 is a display screen of the display 3, 5 is a screen saver character displayed on the display 3, and 6 is an arrow indicating the flow direction of the displayed character 5. In the embodiment of FIG. 2, the character 4 moves from the left end to the right end of the display screen 4, and when it reaches the right end, it appears from the lower left end of the display screen 4 by one line (at a predetermined interval), and at that line. Move from the left edge of display screen 4 to the right edge. Then, when it reaches the right end at the bottom, it returns to the top of the screen and repeats. Time to go from 10
It is about a second.

In the display example shown in FIG. 2, the display device to be displayed is
The screen saver displayed in 3 was a character, but it may be a figure instead of a character, or a combination of characters and figures. Further, the number of characters or figures to be displayed does not have to be one, and may be plural. Also, the movement of displayed characters or figures can be set in any direction,
And it can be set at an arbitrary interval, and further can be set at an arbitrary speed.

[0009]

[Effects of the Invention] Since the sticking of a fixed image on the screen is reduced,
Not only can the emission life of the phosphor be extended, but it can also be monitored on a clean screen.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a CCTV device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an embodiment of a screen saver display on the screen of the present invention.

[Explanation of symbols]

1: TV camera, 2: Anti-seizure device, 3: Display,
4: Display screen, 5: Character, 6: Arrow

Claims (2)

[Claims] 1. A CCTV device including at least a TV camera and a display for displaying an image acquired by the TV camera, comprising a burn-in preventer for superimposing at least one of a character or a graphic on the image, A CCTV camera device, wherein at least one of a character or a figure is moved and displayed on the screen of the display unit at a predetermined time interval. 2. The CCTV camera device according to claim 1, wherein at least one of the characters or figures is moved and displayed on the screen of the display after a predetermined time has elapsed. apparatus.