JP2001100720A - Method and device for preventing screen burning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device which previously displays an area to be dropped out when moving a display position or secretly move a display position. SOLUTION: A function signal to move the display position of a video signal in order to prevent screen burning is inputted, and a mark to find an area to be dropped due to movement, for example, a display frame slightly inside a screen or a numerical value indicating an extent of drop-out is displayed on the screen in a form of on-screen display. Video muting to find the area to be dropped out is performed as the mark. Video before movement of the display position is displayed on the screen, and a muting screen in an area is scrolled to display video after movement of the display position on the screen after scrolling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention checks the extent of a missing area without actually moving the display position of a video signal for preventing screen burn-in and displays the video signal. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen burn-in prevention method and apparatus for preventing burn-in at the same location on a display screen.

[0002]

2. Description of the Related Art When a time, weather forecast, channel number, and other high-brightness video signals are constantly displayed at the same location on a display screen, burn-in occurs on the display portion, making the display screen blurred and difficult to see. To prevent this burn-in,
Generally, a method of moving the display position is used. In addition, there is a method in which the entire screen is scrolled and burned at the same level such as white when the display device is not used.

[0003]

In the method of moving the display position, an area where a part of the image is missing from the display screen is naturally generated by the movement. It is not clear how much this missing area is until actually executed. For example, if it is assumed that the user moves every hour in the up, down, left, and right directions, the missing area is required after 4 hours. I do not know how much. Therefore, depending on the displayed image, there is a problem that an area that should not be omitted is largely missing more than expected, or that the amount of movement is small, so that prevention of burning is insufficient. Further, if the amount of movement during the movement operation is too large, there is a problem that an unnatural feeling is generated on the video screen during movement.

The method of printing the entire screen at the same level, such as white, has a problem that the entire display screen is deteriorated.

A first object of the present invention is to provide a method and apparatus for displaying the extent of a missing area when moving a display position and minimizing inconvenience caused by the movement. is there. A second object of the present invention is to
It is an object of the present invention to provide a method and an apparatus for moving a display position while making the display position as invisible as possible.

[0006]

According to the present invention, a function signal for moving a display position of a video signal is set and input in order to prevent screen burn-in, and the function signal is used to display the video signal on a screen for displaying the video signal. This is a screen burn-in prevention method in which a mark for knowing an area missing due to movement is displayed on an on-screen display. The mark for knowing the area that is missing due to the movement may be displayed with a display frame all around or inside the screen, or the lacking distance in the horizontal and vertical directions may be displayed on the screen as characters and numerical values. You may do so.

[0007] As a mark for knowing an area missing due to movement, video mute for knowing an area missing due to movement can be performed on a screen displaying a video signal. Furthermore, a mute screen having a certain area on the screen displaying the video signal is scrolled, and among the screens divided by the scroll screen, an image before the display position is moved on the screen before scrolling is displayed. It is also possible to display the video after the display position is moved on the screen after scrolling.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention basically employs a method of moving a display position, and burn-in is prevented by the following various methods. First Embodiment "Frame Display": A display frame is displayed on the screen before moving by an OSD (On Screen Display) in order to know in advance the area which is missing due to the movement. Second Embodiment "Information Display": In order to know in advance the area missing due to the movement, the movement amount is displayed on the screen before the movement using numerical values, characters, and the like by OSD. Third Embodiment “Demonstration of Position Movement by OSD”: In order to confirm the actual position movement operation, a demonstration operation is performed using the OSD on the setting screen. Fourth Embodiment "Video Mute of Missing Area": In order to know in advance the area missing due to movement, image muting of the area missing due to movement is performed on the screen before moving. Fifth Example "Mute and Color of Missing Area": In order to know in advance the area which is missing due to movement, image mute of the area which is missing by moving on the screen before moving is performed. Add. Sixth Embodiment "Mute and Information Display of Missing Area": In order to know in advance the area that is missing due to movement, image mute of the missing area is performed on the screen before moving, and characters are added to that area. , Characters and the like are displayed. Seventh Embodiment "Demonstration of Video": A demonstration operation is performed using the display video at the time of setting to confirm the actual position movement operation. Eighth Embodiment "Mute Screen Scroll": A mute screen having a certain area is scrolled so as not to give a feeling of strangeness due to a change in the screen position. Ninth Embodiment "Scrolling of Color Screen": Screen scrolling with all white or a color having a certain area is performed so as not to give a feeling of strangeness due to a change in the screen position. Tenth embodiment "Scrolling of information display screen": In order not to give a sense of incongruity due to a change in the screen position, the screen is scrolled by adding all white or color with a certain area, and characters, characters, etc. are displayed thereon. I do.

Hereinafter, specific embodiments will be described with reference to the drawings. In FIG. 1, a video signal input terminal 10, a function signal input terminal 11, and a timer unit 13 are connected to a control unit 12. From the function signal input terminal 11, the first embodiment "frame display", the second embodiment "information display", the third embodiment "O"
Demonstration of Position Movement in SD ", Fourth Embodiment" Mute and Color of Missing Area ", Fifth Embodiment" Mute and Color of Missing Area ", Sixth Embodiment" Mute and Display of Information in Missing Area ", Seventh embodiment "video demonstration", eighth embodiment "mute screen scroll", ninth embodiment "color screen scroll", and tenth embodiment "information display screen scroll"
The signal for performing each of the instructions is input. The timer unit 1
3 sets a time such as scrolling once an hour, setting a scroll speed, and the like.

The output side of the control section 12 is connected to a screen display section 18 via a video signal control section 14 and an OSD control section 15 which are parallel to each other. The OSD control unit 15 is connected to a data unit 16 in which font data to be displayed by OSD is stored, and a coordinate data unit 17 in which fonts, display frames, and other display coordinate data are stored.

As shown in FIG. 2, the video signal control unit 14 includes a horizontal / vertical capture position control unit 19 for controlling the capture position of the video signal, and a horizontal / vertical capture control for controlling the horizontal / vertical capture size of the video. Width control unit 20, horizontal / vertical start position control unit 2 for controlling the start position of a video signal
1. A horizontal / vertical display width control unit 22 for controlling the horizontal / vertical display size of an image is sequentially connected in series.

FIG. 6 shows that in the first to tenth embodiments, a mute control unit 31 for coping with a case involving a mute process includes a video signal control unit 14 and an OSD control unit 15.
Is inserted in parallel.

FIG. 7 shows that the scroll signal control unit 33 for responding to the case where scroll processing is involved in the first to tenth embodiments is replaced with the video signal control unit 14,
It is inserted in parallel with the SD control unit 15. Among these, the scroll signal control unit 33 includes a horizontal / vertical capture position control unit 19s, a horizontal / vertical capture width control unit 20s, and a horizontal / vertical capture width control unit 20s.
Vertical start position control unit 21s, horizontal / vertical display width control unit 2
The video signal control unit 14 includes a video signal control unit 14a for the screen before the position movement and a video signal control unit 14b for the screen after the position movement. The unit 14a includes a horizontal / vertical capture position control unit 19a, a horizontal / vertical capture width control unit 20a,
Vertical start position control unit 21a, horizontal / vertical display width control unit 2
2a, and the video signal control unit 14 after the position movement.
b includes a horizontal / vertical capture position control unit 19b, a horizontal / vertical capture width control unit 20b, a horizontal / vertical start position control unit 21b, and a horizontal / vertical display width control unit 22b. Further, the OSD control unit 15 controls the horizontal / vertical start position control unit 2
1o and the data section 16.

Next, the operation of each embodiment will be described with reference to FIGS.
It will be described based on. In FIG. 1, a video signal input terminal 1
0 is sent to the control unit 12, and the control unit 1
Each time a vertical synchronizing signal of a video signal is generated in 2, a horizontal / vertical capture position control unit 19, a horizontal / vertical capture width control unit 20, a horizontal / vertical start position control unit 21, and a horizontal / vertical display width, which will be described later. Each parameter of the control unit 22 is calculated.
The signal sent from the control unit 12 is the video signal control unit 1
At 4, as shown in FIG. 2, the horizontal / vertical capture position of the video signal is set and controlled by the horizontal / vertical capture position control unit 19, and the horizontal / vertical capture width control unit 20 controls the horizontal / vertical capture of the video signal. The capture size is set and controlled.
The horizontal / vertical start position of the video signal is set and controlled by the vertical start position control unit 21, and the horizontal and vertical display sizes of the video signal are set and controlled by the horizontal / vertical display width control unit 22. The video signal thus set and controlled is transmitted to the screen display unit 1
At 8, it is displayed as the image 26 of FIGS. 3 and 4.

First Embodiment "Frame Display" When a function signal for "frame display" and a signal indicating the size of the display frame 24 are input to the control unit 12 from the function signal input terminal 11, this control unit 12 captures the missing area and sends the data to the OSD control unit 15. This OSD
In the control unit 15, the display frame 24 corresponding to the input data is displayed.
3 is fetched from the data section 16, and the display font and its coordinate data are fetched from the coordinate data section 17, and as shown in FIG. 3A, the OSD display frame 24 and the "ON / OFF" OSD font 25 are displayed. Is displayed on the display screen 23 by the OSD. When the absence of a part of the video signal is confirmed in advance by the OSD display frame 24, the size of the display frame 24 is indicated by the function signal from the function signal input terminal 11, and the OSD display frame 24 By instructing the movement of the coordinate position, the data instructed from the data unit 16 and the coordinate data unit 17 are output and displayed on the display screen 23 of the screen display unit 18. If there is no problem in moving the size and coordinate position of the OSD display frame 24 specified by the function signal from the function signal input terminal 11, the timer unit 1
The display position moves at regular time intervals on the basis of the time signal from 3.

Second Embodiment "Information Display" When a function signal for "information display" and signals of numerical values Mcm and Ncm indicating a missing area are input to the control unit 12 from the function signal input terminal 11, The control unit 12 sends these data to the OSD control unit 15. In the OSD control unit 15, numerical data corresponding to the input data is fetched from the data unit 16, and the display font and its coordinate data are fetched from the coordinate data unit 17, as shown in FIG.
As shown in (b), the numerical value display section 27 and the OSD font 25 are displayed on the display screen 23 by OSD. If it is confirmed in advance by the numerical value display unit 27 that a part of the video signal is absent, the numerical value is again indicated by the function signal from the function signal input terminal 11 so that the data unit 16 and the coordinate data unit 17 are respectively displayed. Is output and displayed on the display screen 23 of the screen display unit 18. If there is no problem in moving the numerical value and the coordinate position of the numerical value display unit 27 specified by the function signal from the function signal input terminal 11, the display position moves at a fixed time interval based on the time signal from the timer unit 13.

Third embodiment "Demonstration of position movement by OSD""Demonstration of position movement by OSD" from the function signal input terminal 11
Is input to the control unit 12, the control unit 12 sends this data to the OSD control unit 15. O
In the SD control unit 15, the OSD corresponding to the input data
The data of the font 25 is fetched from the data section 16,
Also, the sequentially moving coordinate data is fetched from the coordinate data section 17, and as shown in FIG. 3C, the display position of the OSD font 25 sequentially moves as indicated by an arrow and is displayed on the display screen 23 by the OSD. . The time interval for sequentially moving is based on a time signal from the timer unit 13.

Fourth Embodiment "Mute of Image in Missing Area" In FIG. 6, when a function signal for "mute of image in missing area" is input from the function signal input terminal 11 to the control section 12, the control section 12 Controls the capture width of the video signal by the horizontal / vertical capture width control unit in the mute control unit 31, or controls the display width of the video signal by the horizontal / vertical display width control unit. Note that if the background color is set to 0 level, it is muted because it is a black level. Then, the area where the outer periphery is missing is displayed on the display screen 23 of the screen display unit 18 in FIG.
As shown in (d), the image becomes the video mute area 28, and the image 26 is not displayed in the area that is missing due to the movement.
When it is confirmed in advance that a part of the video signal is absent from the video mute area 28, the function signal from the function signal input terminal 11 is used to instruct the size of the video mute area 28 and to move the coordinate position. The data specified by the data section 16 and the coordinate data section 17 are output, and the image mute area 28 is displayed on the display screen 23 of the screen display section 18.
Is performed.

Fifth Embodiment "Video Mute and Color in Missing Area" In FIG. 6, when a function signal for "video mute and color in missing area" is input from the function signal input terminal 11 to the control section 12, The control unit 12 includes a mute control unit 31
The horizontal / vertical capture width control unit controls the capture width of the video signal, or the horizontal / vertical display width control unit controls the display width of the video signal. At the same time, when a background color signal is input from the background color signal input terminal 32, R, G,
By adjusting the B level, the video mute area 28 is displayed in color. Then, the area lacking the outer periphery becomes the image mute area 28 on the display screen 23 of the screen display unit 18 as shown in FIG. 3D, and furthermore, the color tone is projected on the image mute area 28, thereby moving the area. The image 26 is not displayed in the missing area. If it is confirmed in advance that a part of the video signal is absent by displaying the color tone on the video mute area 28 and this portion, the function signal input terminal 1
By instructing the movement of the coordinate position and the size of the video mute area 28 with the function signal from 1, the data specified by the data section 16 and the coordinate data section 17 are output, respectively, and A color tone is displayed in the video mute area 28.

Sixth Embodiment "Video Mute of Missing Area and Information Display" A function signal for "video muting of a missing area" in the fourth embodiment is input to the control section 12 or the fifth embodiment.
A function signal for “video muting and color in the missing area” in the embodiment is input to the control unit 12, and the video muting area 28 on the display screen 23 is performed, or a color tone is displayed in the video muting area 28. Figure 3
As shown in (e), an information font 29 such as advertisement information and characters is displayed in the video mute area 28. In order to display the information font 29, when a function signal for “information font display” and a signal indicating an information font display area are input to the control unit 12 from the function signal input terminal 11, the control unit 12 Sends these data to the OSD control unit 15. In the OSD control unit 15, information font data corresponding to the input data is stored in the data unit 16.
, And the coordinate data is fetched from the coordinate data section 17, and the information font 29 is displayed in the video mute area 28.

Seventh Embodiment "Video Demonstration" When a function signal for "video demonstration" is input from the function signal input terminal 11 to the control unit 12, the control unit 12
This data is sent to the video signal control unit 14. In the video signal control unit 14, the horizontal / vertical capture position control unit 19 sets and controls the horizontal / vertical capture position of the video signal corresponding to the input data, and the horizontal / vertical capture width control unit 20
The horizontal / vertical capture size of the video signal is set and controlled by the, the horizontal / vertical start position of the video signal is set and controlled by the horizontal / vertical start position control unit 21, and the video signal is set by the horizontal / vertical display width control unit 22. Is set and controlled. As shown in FIG. 3 (f), based on the time data from the timer section 13, the display position of the image 26 is sequentially moved as indicated by an arrow, and the video signal thus set and controlled is displayed on the display screen 23. Is displayed. At this time, the OSD font 25 does not move.

Eighth Embodiment "Mute Screen Scroll" In FIG. 7, a video signal is
A function signal for “scrolling the mute screen” is input from the function signal input terminal 11, and a 0 level signal for muting as a background signal for scrolling is input from the background color signal input terminal 32 to the control unit 12. You. In this control unit 12, each time a vertical synchronizing signal of the video signal is generated, the video signal control unit 14a before movement, the video signal control unit 14b after movement, the OSD control unit 15, and the scroll signal control unit 33 Calculate and update each parameter of the circuit. That is, in the case shown in FIG. 4B, the scroll screen area 30 is
The display screen 23a divided by the scroll screen area 30 by each of the circuits 3 is a video signal control unit 1 before the movement.
4a, the other display screen 23b is moved by the video signal control unit 14b after the movement, and the information font 29 such as the advertisement information and the character is horizontally and vertically captured by the OSD control unit 15, the capture width, the start position, and the like.
The display width and the like are sequentially set and controlled based on each parameter of the control unit 12.

Then, first, as shown in FIG.
The scroll screen area 30 is displayed on the display screen 23a before the movement by the time signal indicating the scroll speed from the timer unit 13.
Start scrolling from above to below. FIG.
As shown in (b), the display screen 23b after the scroll screen area 30 is scrolled downward and moved upward appears. While passing through the scroll screen area 30, the image 26 moves from the position on the display screen 23a before the movement to the position on the display screen 23b after the movement. Further, as shown in FIG. 4C, when the scroll screen area 30 scrolls downward and only the moved display screen 23b appears, all the images 26 move to the position of the moved display screen 23b. Moving. As described above, since the image 26 is moved while the scroll screen area 30 is scrolling, the image 26 can be moved without giving a feeling of strangeness due to a change in the screen position.

In the eighth embodiment, the scroll screen area 3
The case where 0 is scrolled downward from above has been described. However, the present invention is not limited to this example. As shown in FIG. 5A, when scrolling from left to right or scrolling in the opposite direction, As shown in FIG. 5B, a case where scrolling is performed so as to rotate from the lower left to the lower right may be used.

Ninth Embodiment "Scrolling of Color Screen" In the ninth embodiment, when a background color signal is input from a background color signal input terminal 32, the R, G, and B levels are adjusted.
The video mute area 28 is displayed in color. Others are No. 8.
This is the same as the embodiment.

Tenth Embodiment "Scrolling of Information Display Screen" In the tenth embodiment, in the eighth or ninth embodiment, the OSD control unit 1 is added to the scroll screen area 30.
5 controls the vertical / horizontal start position, the display data from the data section 16 is taken in by the OSD control section 15, and the coordinate data is taken in from the coordinate data section 17 to obtain the information font. 29 is displayed, and the rest is the same as the eighth embodiment.

[0027]

According to the present invention, a mark for knowing a missing area, for example, a screen, is displayed on a screen displaying a video signal by inputting a function signal for moving a display position of the video signal to prevent screen burn-in. Since the characters and numerical values indicating the slightly inner display frame and the missing distance are displayed on the on-screen display, the necessary and sufficient amount of movement can be known in advance without actually performing the movement.

Moving the landmark on the on-screen display to know the area missing by the movement,
By moving the actual video signal, the missing area can be known more reliably.

Since a function signal for moving the display position of the video signal to prevent the screen burn-in was input, the image was muted on the screen displaying the video signal. The state can be reproduced. At this time, add color to the video mute part,
If information is displayed, processing can be performed while having fun.

Since a function signal for moving the display position of the video signal is inputted to prevent the screen burn-in, a mute screen having a certain area on the screen for displaying the video signal is scrolled. Of the screens divided by the scroll screen, in a state where the operator who operates the movement between the image before moving the display position on the screen before scrolling and the image after moving the display position on the screen after scrolling does not notice Can be moved.

On a mute screen having a certain area, all white or color can be added, or an information font can be displayed on-screen.
It can also be captured and displayed on the display.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a screen burn-in prevention method and apparatus according to the present invention.

FIG. 2 is a detailed block diagram of a video signal control unit 14 in FIG.

3A and 3B are explanatory diagrams showing a specific example of a method and an apparatus for preventing screen burn-in according to the present invention. FIG. 3A is an explanatory diagram in the case where an OSD display frame 24 is provided, and FIG. (C) is an explanatory diagram when the OSD font 25 is moved, (d) is an explanatory diagram when the video mute area 28 is provided, and (e) is an information diagram when the video mute area 28 is provided. FIG. 7F is an explanatory diagram when the font 29 is provided, and FIG. 7F is an explanatory diagram when the image 26 is moved.

4A and 4B are explanatory diagrams showing specific examples of a screen burn-in prevention method and apparatus according to the present invention. FIGS. 4A, 4B, and 4C show display before the scroll screen area 30 moves up and down sequentially. It is explanatory drawing which shows the state which is moving to the display screen 23b after moving from the screen 23a.

5A and 5B are explanatory diagrams showing another example of the screen burn-in prevention method and device according to the present invention, wherein FIG.
FIG. 3B is an explanatory view showing a state in which 0 moves sequentially from left to right and moves from the display screen 23a before the movement to the display screen 23b after the movement. FIG. 5B shows the scroll screen area 30 sequentially rotating from left to right. It is explanatory drawing which shows the state which has moved and moved from the display screen 23a before movement to the display screen 23b after movement.

FIG. 6 is a block diagram showing another embodiment of the method and apparatus for preventing screen burn-in according to the present invention.

FIG. 7 is a block diagram showing still another embodiment of the method and apparatus for preventing screen burn-in according to the present invention.

[Explanation of symbols]

10: video signal input terminal, 11: function signal input terminal, 1
2 ... control unit, 13 ... timer unit, 14 ... video signal control unit,
15 ... On-screen display control unit, 16 ...
Data section, 17: coordinate data section, 18: screen display section, 1
9 horizontal / vertical capture position control unit, 20 horizontal / vertical capture width control unit, 21 horizontal / vertical start position control unit
22: horizontal / vertical display width control unit, 23: display screen, 24
... On-screen display display frame, 25 ... On-screen display font, 26 ... Image, 2
7 Numerical display, 28 Video mute area, 29 Information font, 30 Scroll screen area, 31 Mute control, 32 Background color signal input terminal, 33 Scroll signal control

Claims (16)

[Claims] 1. A step of setting and inputting a function signal for moving a display position of a video signal in order to prevent screen burn-in, and an area on the screen for displaying the video signal which is lacked by the movement due to the function signal. Displaying a mark on the on-screen display for knowing the screen burn-in. 2. The screen burn-in prevention method according to claim 1, wherein the mark for knowing the area missing by the movement is displayed with a display frame all around or inside the screen. 3. The screen burn-in prevention method according to claim 1, wherein the mark for knowing the area missing due to the movement displays the lacking distance in the horizontal direction and the vertical direction as characters and numerical values on the screen. 4. A step of setting and inputting a function signal for moving a display position of a video signal in order to prevent screen burn-in, and using the function signal on a screen displaying the video signal, an area which is missing due to the movement. A step of displaying a mark on the on-screen display for knowing the image, and a step of moving the mark to check an area missing by the movement. 5. A step of setting and inputting a function signal for moving a display position of a video signal in order to prevent screen burn-in, and using the function signal to display an area on the screen displaying the video signal, the area being missing due to the movement. And performing a video mute to know the image. 6. A step of setting and inputting a function signal for moving a display position of a video signal in order to prevent screen burn-in, and an area missing by movement on a screen displaying the video signal by the function signal. A video mute for knowing the image and further adding a color to the image mute. 7. The screen burn-in prevention method according to claim 5, wherein information is displayed at a video mute portion. 8. A step of setting and inputting a function signal for moving a display position of a video signal to prevent screen burn-in, and moving the video signal on a screen displaying the video signal by the function signal. And confirming an area that is missing due to movement. 9. A step of setting and inputting a function signal for moving a display position of a video signal in order to prevent screen burn-in, and a mute having an area on a screen for displaying the video signal by the function signal. The step of scrolling the screen, and, of the screens divided by the scroll screen, displaying the image before moving the display position on the screen before scrolling, and displaying the image after moving the display position on the screen after scrolling. And a display step. 10. The screen burn-in prevention method according to claim 9, wherein the mute screen having a certain area to be scrolled is added with all white or color. 11. The screen burn-in prevention method according to claim 9, wherein the mute screen is configured to capture and display an information font on an on-screen display. 12. A video signal input terminal 10, a function signal input terminal 11 for setting and inputting a function signal for moving a display position of a video signal to prevent screen burn-in,
A control unit 12 for updating the next parameter in synchronization with a synchronization signal from the video signal input terminal 10; a horizontal / vertical capture position, capture width,
Video signal controller 14 for controlling display start position and display width
A horizontal / vertical capture position, capture width, display start position, display for displaying on the on-screen display landmark data for knowing an area missing due to movement based on the function signal from the function signal input terminal 11 On-screen display control unit 15 for controlling width
And the video data from the video signal control unit 14
A screen display unit for displaying mark data from the screen display control unit; 13. A video signal input terminal 10, a function signal input terminal 11 for setting and inputting a function signal for moving a display position of a video signal to prevent screen burn-in,
A control unit 12 for updating the next parameter in synchronization with a synchronization signal from the video signal input terminal 10; a horizontal / vertical capture position, capture width,
Video signal controller 14 for controlling display start position and display width
And a mute control unit for controlling a horizontal / vertical capture position, a capture width, a display start position, and a display width for performing a video mute for knowing a region missing due to movement based on the function signal from the function signal input terminal 11. 31 and a screen display unit 18 for displaying video data from the video signal control unit 14 by performing video muting with a signal from the mute control unit 31 and displaying the screen data. . 14. A function signal for setting and inputting a video signal input terminal 10, a background color signal input terminal 32 for video mute, and a function signal for moving a display position of a video signal to prevent screen burn-in. An input terminal 11, a control unit 12 for updating a next-stage parameter in synchronization with a synchronization signal from the video signal input terminal 10, a horizontal / vertical capture position, capture width, and a video signal from the control unit 12;
Video signal controller 14 for controlling display start position and display width
And a mute control unit for controlling a horizontal / vertical capture position, a capture width, a display start position, and a display width for performing a video mute for knowing a region missing due to movement based on the function signal from the function signal input terminal 11. An on-screen display controller 15 for controlling a horizontal / vertical display start position for displaying information data on an on-screen display in a video mute portion based on a function signal from the function signal input terminal 11; The video data from the video signal control unit 14 is displayed by performing video muting with the signal from the mute control unit 31 and displaying the information data from the on-screen display control unit 15 in the video mute portion. Screen burn-in prevention device, comprising: . 15. A function signal input for setting and inputting a picture signal input terminal 10, a background color signal input terminal 32 for scrolling, and a function signal for moving a display position of a picture signal to prevent screen burn-in. A terminal unit 11, a timer unit 13 for setting a scroll time, a control unit 12 for updating a next-stage parameter in synchronization with a synchronization signal from the video signal input terminal 10, and a scroll unit from the background color signal input terminal 32 A scroll signal control unit 33 that outputs a scroll screen having a certain area by controlling the horizontal / vertical capture position, capture width, display start position, and display width of the signal.
Among the screens divided by the scroll screen from the scroll signal control unit 33, the horizontal / vertical capturing position, capturing width, and the like of the video signal before moving the display position.
Video signal controller 14a for controlling display start position and display width
A video signal control unit 14b for controlling a horizontal / vertical capture position, a capture width, a display start position, and a display width of the video signal after moving the display position; a scroll screen from the scroll signal control unit 33; A screen display unit 18 for displaying a video signal before moving the display position from the signal control unit 14a and a video signal after moving the display position from the video signal control unit 14b. Screen sticking prevention device characterized by the above-mentioned. 16. A function signal input for setting and inputting a video signal input terminal 10, a background color signal input terminal 32 for scrolling, and a function signal for moving a display position of a video signal to prevent screen burn-in. A terminal unit 11, a timer unit 13 for setting a scroll time, a control unit 12 for updating a next-stage parameter in synchronization with a synchronization signal from the video signal input terminal 10, and a scroll unit from the background color signal input terminal 32 A scroll signal control unit 33 that outputs a scroll screen having a certain area by controlling the horizontal / vertical capture position, capture width, display start position, and display width of the signal.
Among the screens divided by the scroll screen from the scroll signal control unit 33, the horizontal / vertical capturing position, capturing width, and the like of the video signal before moving the display position.
Video signal controller 14a for controlling display start position and display width
And a video signal controller 14b for controlling the horizontal / vertical capture position, capture width, display start position, and display width of the video signal after moving the display position, and capturing the video signal on a scrolling mute screen with an on-screen display. An on-screen display control unit 15 for controlling a horizontal / vertical display start position of information data to be displayed, a scroll screen from the scroll signal control unit 33,
The information data from the on-screen display control unit 15, the video signal before moving the display position from the video signal control unit 14a, and the video signal after moving the display position from the video signal control unit 14b are A screen burn-in prevention device, comprising: a screen display unit 18 for displaying.