CN100365699C - Device for preventing incomplete image on picture of image display equipment and its method - Google Patents
Device for preventing incomplete image on picture of image display equipment and its method Download PDFInfo
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- CN100365699C CN100365699C CNB2003101052787A CN200310105278A CN100365699C CN 100365699 C CN100365699 C CN 100365699C CN B2003101052787 A CNB2003101052787 A CN B2003101052787A CN 200310105278 A CN200310105278 A CN 200310105278A CN 100365699 C CN100365699 C CN 100365699C
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Abstract
The present invention relates to a picture image retention preventing device and a method for an image display device. In the image display device of a liquid crystal display or a plasma display, white color for effectively eliminating the image retention is utilized to move screen display, and the picture image retention generated by a certain color of a specific unit emits light for a long time can be prevented. The present invention is composed of the following stages: selecting image retention preventing functions through a keyboard input part to generate the screen display; mixing the generated screen display and input image signals; displaying the generated screen display according to a given scanning mode. The screen display which is unperceivable by users is utilized to cause the specific unit to discharge within a certain time range by using the white color or a proper color to prevent the image retention from generating on pictures. When the users select the size or the style of the image retention preventing screen display and the transfer of image information is maintained, the image retention can be greatly prevented.
Description
Technical field
The present invention relates to a kind of image display, relate in particular to as plasma scope (hereinafter to be referred as PDP) and can produce in the display device characteristic of image of image retention, the image display damaged picture that can prevent or eliminate image retention effectively prevents devices and methods therefor.
Background technology
In existing image display, televisor is in the broadcast singal that is transmitted by TV station, select to conciliate and call the selected channel broadcasting signal in family, isolate sound accompaniment and picture signal, then by corresponding sound accompaniment and Flame Image Process, a kind of vision facilities of exporting by picture and loudspeaker.Its kind has the most widely used CRT (cathode-ray tube (CRT)) usually, also has for the requirement of satisfying high image quality/big picture characteristic to remove to adopt LCD, televisors such as PDP.
Especially concerning the PDP televisor, because following present CRT to compare on its architectural characteristic can make quite thinly, meanwhile compare and have outstanding light characteristic with LCD, it is the important technology condition of televisor, but have outstanding layout character such as wall hanging in addition again, favored as the televisor of a new generation.
But, as an industrialization product, owing to show specific character for a long time, perhaps the picture of wide cut is set under the situation about showing for a long time at 4: 3, the LCD product line can stay long image retention at boudary portion, and the degradation phenomena of discharge cells can take place in the product line of PDP, will cause fatal damage to product.
In addition, most image display is by row or according to pixels add reverse voltage, at this moment will be equivalent to by the result who adds a kind of reverse voltage outside the venue.Certainly, all identical that of common voltage at this moment is optimal, yet in fact certain voltage difference will take place.Owing to such reason and external environment condition, the deterioration of image retention and picture unit will take place; If show this rest image for a long time, the phenomenon of image retention or deterioration will appear so.
The image display of conventional art as shown in Figure 1, is made of following several sections, is provided with the keyboard input part 10 of input customer requirements instruction that is:; Be provided with one by horizontal/vertical synchronization signals that is transfused to (H-Sync/V-Sync) and time clock (Clk), understand the picture format of input, and export the microcomputer 20 of control signal for the demonstration that realizes the adaptation form; Be provided with a control signal, store the storer 30 that is used for controlling various system datas by microcomputer 20; Be provided with R, G, a B picture signal that receives simulation, or receive R, G, the B picture signal of numeral, export the picture signal input part 40 of digital R, G, B picture signal; Being provided with a picture signal from 40 outputs of picture signal input part, is the memory buffer 60 that unit stores temporarily with frame (Frame); Be provided with a picture signal that will be stored in the memory buffer 60, the scaler 50 that transmits by the signal input clock of relevant image display (PDP or LCD) 90; Also be provided with the display driver portion 70 that a compressed picture signal by scaler 50 outputs drives the associated picture display device; Also be provided with a image display (PDP or LCD) 80 by the drive of display driver portion 70.
Image display with above-mentioned traditional structure, if the instruction that the user needs by keyboard input part 10 inputs, then pressing the control signal of microcomputer 20, from digital R, G, the B picture signal of picture signal input part 40 inputs, will be that unit is deposited into memory buffer 60 with the frame.And scaler 50 is the picture signals that are stored in the memory buffer 60, comes output image signal by the signal input clock of associated picture display device (PDP or LCD) 80; The picture signal that so is output will be presented on the associated picture display device (PDP or LCD) 80.
But, as mentioned above, in conventional art, if the image display by LCD or PDP removes to show rest image for a long time, then because the equipment energy characteristic of image display will the degradation phenomena of image retention or picture take place, the reduction of image quality will be caused, thereby being discontented with of user can be caused.
Summary of the invention
The object of the present invention is to provide a kind of damaged picture of image display device to prevent device and method, in image display as LCD or PDP, utilize one to go moving screen to show OSD to eliminating the most effective white of image retention, so as to prevention since specific unit with certain color luminous damaged picture that produces for a long time.
To achieve the above object, the damaged picture of image display of the present invention is prevented locking apparatus, is provided with the picture signal input part, it is characterized in that: be provided with one and be used for selecting customer requirements instruction and image retention to prevent the keyboard input part of pattern; Be provided with horizontal/vertical synchronization signals (H-Sync/V-Sync) and time clock (Clk) that a basis is transfused to, understand the picture format of input, and in order to show and export control signal by related pattern, and when the user selects image retention to prevent pattern by keyboard input part, will generate the microcomputer that image retention prevents to use osd signal according to user's needs; Be provided with a signal that will generate from microcomputer, be transformed into the OSD handling part of a signal that can show and then line output; Be provided with a control signal by microcomputer, will be by simulation R, G, B picture signal or digital R, G, the B picture signal of picture signal input part input, the scaler of exporting by the picture format that is suitable for being transfused to; Also be provided with the picture signal of a handle, mix the mixer of output then from OSD handling part and scaler output; Also be provided with the display driver portion that a signal with mixer output is presented on the associated picture display device and drives the associated picture display device.
To achieve the above object, the damaged picture preventing method of image display of the present invention, be provided with keyboard input part, storer and OSD handling part, it is characterized in that: be provided with a user and selected image retention to prevent function, just generate the stage of OSD by keyboard input part; The stage that the picture signal that is provided with an OSD that will generate and is transfused to is mixed; Also be provided with a stage that shows the OSD that generates according to the scan pattern of setting.
Good effect of the present invention:
The first, the OSD fritter that utilizes a kind of user can not discover makes specific unit with white or suitable color, discharges in the regular hour, thereby can prevent the image retention that takes place on the picture.
The second, allow the user can select to be used for to prevent the size or the pattern of the OSD piece of image retention, thereby in the reception and registration of keeping image information, can prevent image retention well by user's hobby again.
The 3rd, because can prevent image retention in advance,, can improve user's satisfaction so very clean picture can be provided.
Description of drawings
Fig. 1 is the image display structured flowchart of conventional art.
Fig. 2 is the anti-locking apparatus block diagram of the damaged picture of image display of the present invention.
Fig. 3 to Fig. 6 is the process flow diagram of the damaged picture preventing method of image display of the present invention.
The a of Fig. 7 and b are the instance graphs of the damaged picture preventing method of image display of the present invention.
The symbol description of major part in the accompanying drawing:
Storer 300, OSD handling part 400,
Picture signal input part 500, scaler 600,
Embodiment
Image display damaged picture of the present invention is prevented locking apparatus, as shown in Figure 2, is provided with following structure, is provided with a keyboard input part 100 that is used for importing the customer requirements instruction that is:; Be provided with horizontal/vertical synchronization signals (H-Sync/V-Sync) and time clock (Clk) that a basis is transfused to, understand the input picture form, and export control signal for showing by related pattern, and when the user prevents pattern by keyboard input part 100 input damaged pictures, then in order to prevent that damaged picture from will generate the microcomputer 200 of OSD; Be provided with an OSD who produces from microcomputer 200, be processed into the OSD handling part 400 of the signal that can on picture, show; Be provided with a control signal, store the storer 300 that is used for controlling OSD related data and various system datas by microcomputer 200; Also be provided with one and receive simulation R, G, B picture signal or digital R, G, B picture signal, export the picture signal input part 500 of digital R, G, B picture signal then; Also being provided with one will will be the memory buffer 800 that unit stores temporarily with frame (Frame) from the picture signal of picture signal input part 500 outputs; Also be provided with a picture signal that will be stored in the memory buffer 800, the scaler 600 that transmits by the signal input clock of relevant display module; The mixer 700 that also is provided with a picture signal that will transmit from scaler 600 and is mixed to export then from the osd signal of OSD handling part 400 outputs; Also be provided with the picture signal of a reception, be used for driving the display driver portion 900 of associated picture display device (PDP or LCD) 1000 then from mixer 700 outputs.
Below, to having the present invention of this structure, be elaborated with reference to accompanying drawing:
The user can set the ON/OFF image retention by keyboard input part 100 and prevent function, also can import the required instruction of other work.If the user prevents function by keyboard input part 100 deactivation image retentions, microcomputer 200 will receive this instruction and generate osd data then so.So OSD handling part 400 just the osd data that generates from microcomputer 200, is transformed into the signal that an energy shows on picture, and by the horizontal/vertical synchronization signals of the picture signal that is transfused to, the signal of output R, G, B form.
In addition, the picture signal from picture signal input part 500 output is input to scaler 600, and is that unit is stored into memory buffer 800 with the frame.
And scaler 600 will be exported the picture signal that is stored in the memory buffer 800 by the signal input clock of associated picture display device; The picture signal of this output will be imported into mixer 700, and the signal of pressing the control signal of microcomputer 200 and be processed into OSD in OSD handling part 400 mixes and then exports.Be imported into display driver portion 900 from the mixed signal of mixer 700 outputs, and display driver portion 900 drives relevant image display (LCD or PDP), and show the signal that is transfused to.
Below with reference to Fig. 3, to having the present invention of said structure, promptly the damaged picture of image display prevents that device and method from describing:
At first, judge whether the user has selected image retention to prevent Mode S 11, follow judged result S11, the user has selected image retention to prevent pattern, so just sets size, refresh time and the scan pattern S12 of OSD.At this moment, among sequential scanning pattern, random scanning pattern, plural OSD scan pattern, wherein some will be set.And will mix the picture signal of input and the OSDS13 of generation.Then, in the refresh time that is set, on identical position, show the OSD that generates; When refresh time finishes, remove mobile OSDS14～S15 according to the scan pattern that is set so.In addition, prevent pattern, so just finish all routines if the user has closed image retention; If do not close, above-mentioned S13～S16 stage S17 will be removed to repeat.
Below, with reference to Fig. 4 to Fig. 6,, be how to scan to each OSD of sequential scanning pattern, random scanning pattern, plural OSD scan pattern, and being the process how to be prevented from, image retention describes.
The sequential scanning pattern:
With reference to Fig. 4 as can be known, the sequential scanning pattern will be made of following several stages: the scanning starting position S21 that at first sets OSD, at this moment, the scanning starting position that is set will be positioned at left the top of active area, then, if the user has selected image retention to prevent pattern, so just by be set refresh during, to on the reference position that is set, show OSDS22～S23, then, if passed through the refresh time that is set, so just it is moved to right-hand with the OSD size that generates, and on the position that is moved, be set refresh during show S24～S25.Then, whether the OSD that goes to judge demonstration is displayed on S26 on the active area.If the OSD that judged result S26 shows is displayed on the active area, will continue duplication stages S24～S25 so; If be not displayed on the active area, so just move it the next line S27 of active area by the size of OSD.Then, if on the position that is moved, OSD is displayed on the active area, so be set refresh during show OSD after, will turn back to S24 stage S28.
The random scanning pattern:
With reference to Fig. 5 as can be known, the random scanning pattern will be made of following several stages: the scanning starting position S31 that at first sets OSD.At this moment the optional position of start position setting on active area.Then, if the user has selected image retention to prevent pattern, so just by be set refresh during on the position that is set, will show OSDS32～S33.Then will generate the random site of OSD, judge then whether generate locational OSD is displayed on S34～S35 on the effective picture.
Judged result S35, if be displayed on the active area being generated locational OSD, so just by be set refresh during on the position that generates, show OSD, turn back to S34 stage S36 then.
Plural number OSD scan pattern:
With reference to Fig. 6 as can be known, plural OSD scan pattern will be made of following several stages.At first.Select scan pattern, promptly will determine it is to select the sequential scanning pattern, still select the problem S41 of random scanning pattern.
The S41 as a result of decision if selected the sequential scanning pattern, so just sets the 1st and scanning starting position S42～S43 of 2OSD (OSDa and OSDb).Then, on the scanning starting position of setting, will by be set refresh during show S44.
Then, by the 1st and the fabric width of 2OSD (OSDa and OSDb), left/right-handly carry out mobile S45.Then, on the position that is moved, will by be set refresh during show S46.Go then to judge whether the OSD that is shown not is presented at S47 on the active area.
Judged result S47 if OSD is displayed on the active area, so just turns back to above-mentioned stage S45; If be not displayed on the active area, so by the 1st and the height of 2OSD (OSDa and OSDb) move to next line or lastrow S48.Then, judge to be moved the OSD that the back shows, whether be presented at S49 on the active area.
Judged result S49, if be displayed on the active area, so just by be set refresh during, on identical position, show OSD, go repetition S45～S49 stage then.
In addition, if selected scan pattern is the random scanning pattern, so just go to set the 1st and scanning starting position S51～S52 of 2OSD (OSDa and OSDb).At this moment, the reference position that is set is the position of being set arbitrarily on active area.Then, on the position that is set will by be set refresh during show S53.Then, generate the 1st and the random site S54 of 2OSD (OSDa and OSDb).Go then to judge whether the OSD that is shown is presented at S55 on the active area.
The S55 as a result that judges, if the OSD that generates is displayed on the active area, so just by be set refresh during on identical position, show OSD, remove repetition S54～S55 stage S56 then.
As mentioned above, the damaged picture of image display of the present invention prevents devices and methods therefor, at first, when the user starts image retention and prevents function on menu, just the size and pattern setting the becoming basic value that refresh with OSD, or, remove to select size and the pattern of the OSD that is stored according to the size of OSD and pattern according to the predefined method of user.
Here, image retention prevent the OSD that is shown in the action of function size (2 * 2 points for instance, 3 * 3 points, 4 * 4 points, 5 * 5 points ... Deng) and pattern, can select by the user.
In addition, set holding time that a unit is refreshed, i.e. refresh time and repetition time that whole all unit of pictures are refreshed, i.e. repetition period according to user's needs; And the moving method of selection OSD, the initial position that decides OSD to show according to selecteed each moving method then; So the OSD that generates will mix with picture signal, and show according to the horizontal/vertical synchronization signals of the picture signal that is transfused to.
At this moment, should consider to show the position of OSD and the size of OSD, judge whether to be displayed on the effective field (effectively field) of picture; If break away from effective field of picture, so just go to re-move the position one time, perhaps remove the display position of mobile OSD, so that it can be entered in the effective field.
And, if closing image retention, the user do not prevent pattern, so just detect an action of the one-period that whole pictures are refreshed that whether is through with; If do not finish, just continue to implement next action; If end cycle just waits by the time next refresh cycle begins; If following one-period, mobile OSD just gets in the position that is set.
In addition, in a refresh cycle, the time that OSD is shown in specific unit and is kept is with relevant with the translational speed of OSD.Therefore, from the moment that shows after OSD is mixed to image, refresh time will begin to reduce.If refresh time becomes ' 0 ', show on the so former position OSD during, move the process that OSD shows with what continue to repeat to be calculated to the next position, up to closing till image retention prevents function, the unlimited loop that will circulate is carried out a series of action.
Below, to aforesaid the present invention, promptly the damaged picture of image display prevents device and method, describes with reference to following example.
For instance, the speed of using mobile OSD is 3 * 3 OSD, is the panel of 852 * 480 pixels that unit moves 1 pixel with 16.6msec (is the situation of 60Hz in the panel driving frequency), and when scanning whole picture whereby, approximately needs to refresh in 12 minutes 568 pixels.Be that above-mentioned situation is to belong to select 3 * 3 OSD, and go a kind of situation of scanning, and the cycle that discrete cell is refreshed is 12 minutes with the fastest speed.In the discrete cell of PDP pattern, can produce the time of image retention, under the worst condition, be approximately 30 minutes.Promptly when specific unit carries out about discharge more than 30 minutes with identical color, may produce image retention.So, if per approximately 12 minutes, allow the discharge cells unit be gone to refresh by white OSD, so just can prevent to produce image retention.
If, use 1 * 852 OSD to come panel is scanned with behavior unit, cycle of being refreshed of unit is approximately 8 minutes so; So the mobile top speed of OSD will be subjected to the restriction of panel driving frequency; In order more effectively to eliminate image retention, should extend a duration that the unit is refreshed by white OSD, this can be by making slack-off realization of speed of moving of OSD.
Therefore in addition,, remove to show a plurality of white OSD simultaneously, can scan the panel of wide cut so at short notice, in that prevent will be more effective aspect the image retention if on 1 frame of picture signal.Owing to can set the repetition time in scanning whole image cycle, therefore make to refresh and do not proceed to show with picture signal with OSD, repeat to show but can be set with regular hour unit.
Like this in refreshing the OSD moving method of PDP panel element, to can not influence the user interpretation image information, even if small influence is arranged, also, therefore can reduce owing to image retention prevents the side effect (SideEffect) that function causes owing to allow the user can select the moving method of liking.That is to say, owing to prevent that image retention from being to have utilized not make image fault, and the fritter OSD that do not feel of user, and specific unit is discharged during certain with white or other color, therefore do not exist because image retention prevents the action of function, make entire image carry out on/down/displacement (Shift) an of left side/right, perhaps make whole image be furthered/zoom out side effect (Side Effect) that the obstruction user of (Zoom In/Out) watches picture.
For instance, also can take simple the method for whole unit by certain unit sequential scanning; Mode that also can mobile at random OSD position makes the arbitrary portion of image can realize refreshing; Mode that certain pattern moves realizes refreshing also can to use a plurality of OSD to draw.
In addition, with reference to a and the b of Fig. 7, as follows to utilizing OSD to prevent that the example of image retention from describing.
At first, a of Fig. 7 is an example picture of implementing the sequential scanning pattern; The b of Fig. 7 is an example picture of implementing the random scanning pattern in plural OSD pattern.
The a of Fig. 7 shows the trend that OSD moves on the picture of display module, promptly show at the cathode-ray tube (CRT) electron gun with scan pattern the situation to come mobile OSD in a zigzag bottom to the right side topmost from the left side; OSD can be positioned at the privileged site of whole image in a certain moment arbitrarily.
In addition, the b of Fig. 7 utilizes polylith OSD, the situation of randomly changing OSD display position; On picture, move in the method for a plurality of OSD pieces, each OSD will be moved mutually exclusively,, thereby can in the identical time, make it can refresh more unit in case each OSD piece is overlapped.
And, the damaged picture of image display of the present invention prevents devices and methods therefor, as PDP or LCD by in the luminous image display that comes display image signals in unit, in order to eliminate owing to making certain discrete cell continue the image retention that luminous certain hour produces, to on picture, move the OSD of effective white signal, and can prevent that therefore discrete cell from carrying out luminous and characteristic variations that cause with certain color for a long time.
Claims (7)
1. the anti-locking apparatus of the damaged picture of an image display is provided with the picture signal input part, it is characterized in that: be provided with one and be used for selecting customer requirements instruction and image retention to prevent the keyboard input part of pattern;
Be provided with horizontal/vertical synchronization signals and time clock that a basis is transfused to, understand the picture format of input, and in order to show and export control signal by related pattern, and when the user selects image retention to prevent pattern by keyboard input part, will generate the microcomputer that image retention prevents to use osd signal according to user's needs;
Be provided with a signal that will generate from microcomputer, be transformed into the OSD handling part of a signal that can show and then line output;
Be provided with a control signal by microcomputer, will be by simulation R, G, B picture signal or digital R, G, the B picture signal of picture signal input part input, the scaler of exporting by the picture format that is suitable for being transfused to;
Also be provided with one and will mix the mixer of output then from the picture signal of OSD handling part and scaler output;
Also be provided with the display driver portion that a signal with mixer output is presented on the associated picture display device and drives the associated picture display device;
Also be provided with a control signal, store the program storage that is used for driving osd data and system by microcomputer; Also being provided with one will be the memory buffer that unit stores with the frame by the signal of picture signal input part input.
2. the damaged picture of image display according to claim 1 is prevented locking apparatus, and it is characterized in that: the osd signal that generates in microcomputer is a white signal.
3. the damaged picture preventing method of an image display is provided with keyboard input part, storer and OSD handling part, it is characterized in that: be provided with one and selected image retention to prevent function by keyboard input part as the user, just generate the stage of OSD; Be provided with a stage that the OSD that has generated and the picture signal that is transfused to are mixed; Also be provided with the stage that scan pattern that a basis set shows the OSD that generates.
4. the damaged picture preventing method of image display according to claim 3, it is characterized in that: show the OSD stage that is generated by the scan pattern of having set, according to the size of the OSD that is generated and the refresh time that has been set, will be among sequential scanning pattern, random scanning pattern, plural OSD scan pattern, remove to set wherein some.
5. the damaged picture preventing method of image display according to claim 4 is characterized in that: in the OSD stage that shows the sequential scanning pattern, set the scanning starting position stage of OSD;
Selected image retention to prevent function if be provided with, so just by be set refresh during, will on identical position, show the stage of OSD;
Be provided with size, the stage that it is moved upward by the OSD that is set;
Be provided be set refresh during, on identical position, show stage of OSD;
Be not displayed on the active area if be provided with the OSD that shows, so by the height of selecteed OSD size to stage that next line of active area moves;
If be provided with move after OSD be displayed on the active area, so be set refresh during show OSD, it is moved upward, and goes again to repeat the above-mentioned stage.
6. the damaged picture preventing method of image display according to claim 4 is characterized in that: in the OSD stage that shows the random scanning pattern, set the scanning starting position stage of OSD;
Selected image retention to prevent function if be provided with the user, so just by be set refresh during, will get on to show the stage of OSD in identical position;
Be provided with set refresh during, on identical position, show after the OSD, generate the stage of the random site of OSD;
Be presented on the active area if be provided with generating locational OSD, so just on identical position, show OSD, then stage of mobile OSD at random by during the refreshing of setting.
7. the damaged picture preventing method of image display according to claim 4 is characterized in that: in the OSD stage that shows plural OSD scan pattern, be provided with the stage of selecting some scan patterns from sequential scanning pattern and random scanning pattern;
If be provided with the sequential scanning pattern of having selected, set a plurality of the 1st and stage of the scanning starting position of 2OSD so;
Crossed during the refreshing of setting if be provided with, so from the 1st and the position of 2OSD by each corresponding fabric width, left/right-hand stage of moving;
Be provided with left/right-hand moving after, on the position that is moved, will by be set refresh during show stage of the 1st and the 2nd OSD;
Be not displayed on the active area if be provided with the 1st and the 2nd OSD that is shown, will move row so, and show the 1st and stage of 2OSD on the active area according to whether being presented at.
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| CNB2003101052787A CN100365699C (en) | 2003-12-05 | 2003-12-05 | Device for preventing incomplete image on picture of image display equipment and its method |
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| CNB2003101052787A CN100365699C (en) | 2003-12-05 | 2003-12-05 | Device for preventing incomplete image on picture of image display equipment and its method |
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| KR102349493B1 (en) | 2015-04-30 | 2022-01-12 | 삼성디스플레이 주식회사 | Image shift controller and display device including the same |
| KR20200115766A (en) * | 2019-03-25 | 2020-10-08 | 삼성디스플레이 주식회사 | Display device and driving method of the display device |
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| CN1423896A (en) * | 2000-12-15 | 2003-06-11 | 皇家菲利浦电子有限公司 | Picture-in-picture repositioning and/or resizing bused on video content analysis |
| US20020118299A1 (en) * | 2001-02-27 | 2002-08-29 | Michael Kahn | Adjustable video display window |
| US20020140862A1 (en) * | 2001-03-30 | 2002-10-03 | Koninklijke Philips Electronics N.V. | Smart picture-in-picture |
| US20030103143A1 (en) * | 2001-12-05 | 2003-06-05 | Shin Fujimori | Cutoff control with on screen display circuit for adjusting white balance |
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|---|---|
| CN1624741A (en) | 2005-06-08 |
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