CN113327533A - Display device compensation data repair method and compensation data repair device - Google Patents
Display device compensation data repair method and compensation data repair device Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000008439 repair process Effects 0.000 title description 15
- 230000000694 effects Effects 0.000 claims description 21
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 238000000265 homogenisation Methods 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 241001270131 Agaricus moelleri Species 0.000 claims description 4
- 230000027455 binding Effects 0.000 claims description 4
- 238000009739 binding Methods 0.000 claims description 4
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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Abstract
The application discloses a compensation data repairing method and a compensation data repairing device of a display device, the compensation data repairing method can achieve that the display device is in a compensation closed state by firstly erasing flag bit data in initial gray scale compensation data and restarting a time schedule controller, then can achieve synchronization of image data acquisition and other data in the initial gray scale compensation data by acquiring the image data and synchronously erasing the other data in the initial gray scale compensation data, and effectively reduces time occupied by repairing compensation data or a compensation table of the display device.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a compensation data restoration method and a compensation data restoration device for a display device.
Background
A Liquid Crystal Display (LCD) device generally has a Display unevenness (Mura) problem, which requires corresponding compensation data or a compensation table generated based on the compensation data to compensate for some gray scales to weaken or improve the Display unevenness.
After the compensation data or the compensation table is ready, the compensation data or the compensation table needs to be burned into a flash memory of the liquid crystal display device through corresponding equipment for being called by a timing controller (Tcon).
However, when the compensation data or the compensation table burned into the flash memory is not suitable for gray scale compensation of the liquid crystal display device, the compensation data or the compensation table burned into the flash memory needs to be repaired.
For a single compensation (Mono Demura) repair mode corresponding to 3 gray level bindings with a resolution of 4K or less, the size of the compensation data or compensation table burned into the flash memory is about 640 KB. Before repair, the compensation data or the compensation table burned into the flash memory needs to be erased, and the timing controller is restarted to enable the liquid crystal display device to be in a compensation Off (Demura Off) state.
The total repair duration of the whole compensation data or compensation table is about 35S, wherein the time for erasing the compensation data or compensation table burned into the flash memory is about 4S, and the time for restarting the timing controller is about 1S, so the time for erasing and restarting the two processes is about 5S, which accounts for 14.3% of the total repair duration. In summary, this results in that the total repair time of the liquid crystal display device is too long, which affects the efficiency of the repair of the compensation data or the compensation table.
It should be noted that the above description of the background art is only for the convenience of clear and complete understanding of the technical solutions of the present application. The technical solutions referred to above are therefore not considered to be known to the person skilled in the art, merely because they appear in the background of the present application.
Disclosure of Invention
The application provides a compensation data repairing method and a compensation data repairing device of a display device, which are used for relieving the technical problem that the repair of compensation data or a compensation table of the display device takes too long time.
In a first aspect, the present application provides a method for repairing compensation data of a display device, including: erasing the flag bit data in the initial gray scale compensation data and restarting the time schedule controller, wherein the initial gray scale compensation data is stored in the flash memory; acquiring image data and synchronously erasing other data in the initial gray-scale compensation data; and generating corresponding target gray-scale compensation data based on the image data.
In some embodiments, erasing the flag bit data in the initial gray scale compensation data and restarting the timing controller, the step of storing the initial gray scale compensation data in the flash memory includes: determining flag bit data, wherein the flag bit data is used for reading and/or identifying initial gray scale compensation data by a time sequence controller; determining the storage address of the flag bit data in the flash memory; and erasing the flag bit data based on the storage address of the flag bit data.
In some embodiments, erasing the flag bit data in the initial gray scale compensation data and restarting the timing controller, the step of storing the initial gray scale compensation data in the flash memory includes: determining the flag bit data as at least one of a magic number, a cyclic redundancy check code and a header configuration file; determining the storage address of the sector where the marker bit data is located; and erasing the flag bit data based on the storage address of the sector where the flag bit data is located.
In some embodiments, the step of acquiring image data and simultaneously erasing other data in the initial gray-scale compensation data comprises: acquiring image data of binding point gray scales corresponding to a display device; determining storage addresses of other data in the initial gray scale compensation data; and erasing other data in the initial gray-scale compensation data based on the storage address of other data in the initial gray-scale compensation data.
In some embodiments, the step of acquiring image data and simultaneously erasing other data in the initial gray-scale compensation data comprises: determining the storage address of the sector where other data in the initial gray scale compensation data are located; and erasing the storage content of the sector where the other data in the initial gray-scale compensation data are located based on the storage address of the sector where the other data in the initial gray-scale compensation data are located.
In some embodiments, the initial gray-scale compensation data includes flag bit data and other data; the step of storing the initial gray scale compensation data in the flash memory includes: storing flag bit data in one group of sectors of the flash memory; other data is stored in another set of sectors of the flash memory, wherein the other set of sectors is different from the one set of sectors.
In some embodiments, the step of generating the corresponding target gray-scale compensation data based on the image data is followed by: burning the targeted gray scale compensation data to the flash memory; restarting the time schedule controller; and evaluating the compensation effect corresponding to the target gray scale compensation data.
In some embodiments, the step of evaluating the compensation effect corresponding to the target gray-scale compensation data comprises: evaluating a compensation effect corresponding to the target gray scale compensation data; if the compensation effect meets the brightness homogenization display effect, ending the compensation data restoration process; and if the compensation effect does not meet the brightness homogenization display effect, restoring the compensation data again.
In a second aspect, the present application provides a compensation data restoration device, which is applied to a display device, and operates according to the compensation data restoration method in any of the above embodiments.
In some embodiments, the compensation data repair device includes an erasing restart module, a synchronous processing module and a generating module, wherein the erasing restart module is used for erasing flag bit data in initial gray scale compensation data and restarting the timing controller, and the initial gray scale compensation data is stored in the flash memory; the synchronous processing module is used for acquiring image data and synchronously erasing other data in the initial gray-scale compensation data; the generating module is used for generating corresponding target gray scale compensation data based on the image data.
According to the compensation data repairing method and the compensation data repairing device of the display device, the display device can be in the compensation closed state by firstly erasing the flag bit data in the initial gray scale compensation data and restarting the time schedule controller, then the image data can be acquired and other data in the initial gray scale compensation data can be erased synchronously by acquiring the image data and erasing other data in the initial gray scale compensation data synchronously, and the time occupied by repairing the compensation data or the compensation table of the display device is effectively reduced.
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The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic flowchart of a compensation data repairing method of a display device according to an embodiment of the present disclosure.
Fig. 2 is a schematic view of an operating process of a compensation data restoration method of a display device according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram of a working process of a compensation data restoration method in a conventional technical solution.
Fig. 4 is a schematic structural diagram of a compensation data recovery apparatus according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to 5, as shown in fig. 1, the present embodiment provides a method for restoring compensation data of a display device, which includes the following steps:
step S10: and erasing the flag bit data in the initial gray scale compensation data and restarting the time schedule controller, wherein the initial gray scale compensation data is stored in the flash memory.
Step S20: and acquiring image data and synchronously erasing other data in the initial gray-scale compensation data.
And step S30: based on the image data, corresponding target gray-scale compensation data is generated.
It can be understood that, with the method for repairing compensation data of a display device provided in this embodiment, the display device can be in a compensation off state by erasing the flag bit data in the initial gray scale compensation data and restarting the timing controller, and then by acquiring the image data and erasing other data in the initial gray scale compensation data synchronously, the synchronization between the acquisition of the image data and the erasing of other data in the initial gray scale compensation data can be realized, thereby effectively reducing the time taken by the display device to repair the compensation data or the compensation table.
It should be noted that, in the present embodiment, the restart of the timing controller requires a fixed time, and the fixed time may be about 1 second. The time required to erase the flag bit data in the initial gray-scale compensation data is about 0.6 msec. Therefore, after erasing the flag bit data in the initial gray scale compensation data and restarting the timing controller, the timing controller cannot identify the initial gray scale compensation data at the moment, and the display device is in a compensation closed state.
The time required to erase other data in the initial gray-scale compensation data is about 4 seconds. The time required to acquire image data is typically about 20 seconds. Therefore, when the two are processed in parallel, the time taken for the compensation data or the compensation table of the display device to be repaired can be saved by about 4 seconds.
In one embodiment, erasing the flag bit data in the initial gray scale compensation data and restarting the timing controller, the step of storing the initial gray scale compensation data in the flash memory includes: determining flag bit data, wherein the flag bit data is used for reading and/or identifying initial gray scale compensation data by a time sequence controller; determining the storage address of the flag bit data in the flash memory; and erasing the flag bit data based on the storage address of the flag bit data.
It is understood that, in this embodiment, the specific content of the flag bit data and the storage address thereof in the flash memory need to be determined, and then the flag bit data is erased when the controller of the flash memory responds to the request of the erase instruction of the flag bit data.
In one embodiment, erasing the flag bit data in the initial gray scale compensation data and restarting the timing controller, the step of storing the initial gray scale compensation data in the flash memory includes: determining the flag bit data as at least one of a magic number, a cyclic redundancy check code and a header configuration file; determining the storage address of the sector where the marker bit data is located; and erasing the flag bit data based on the storage address of the sector where the flag bit data is located.
It is understood that, in the present embodiment, the flag bit data may be at least one of a Magic number (Magic Nmuber), a Cyclic Redundancy Check (CRC), and a Header configuration file. Wherein the magic number may be used to mark the format of the file or protocol. Cyclic redundancy check is a channel coding technique for generating a short fixed bit check code according to data such as network data packets or computer files, and is mainly used to detect or check errors that may occur after data transmission or storage, and it can use the principles of division and remainder to detect errors.
In one embodiment, the step of acquiring image data and simultaneously erasing other data in the initial gray-scale compensation data comprises: acquiring image data of binding point gray scales corresponding to a display device; determining storage addresses of other data in the initial gray scale compensation data; and erasing other data in the initial gray-scale compensation data based on the storage address of other data in the initial gray-scale compensation data.
It is understood that the acquired image data is raw image data that is not processed and corresponds to a display image of the display device at a preset gray scale or a specific gray scale. The preset gray scale or the specific gray scale is the known gray scale of the display device.
In one embodiment, the step of acquiring image data and simultaneously erasing other data in the initial gray-scale compensation data comprises: determining the storage address of the sector where other data in the initial gray scale compensation data are located; and erasing the storage content of the sector where the other data in the initial gray-scale compensation data are located based on the storage address of the sector where the other data in the initial gray-scale compensation data are located.
In one embodiment, the initial gray-scale compensation data includes flag bit data and other data; the step of storing the initial gray scale compensation data in the flash memory includes: storing flag bit data in one group of sectors of the flash memory; other data is stored in another set of sectors of the flash memory, wherein the other set of sectors is different from the one set of sectors.
In one embodiment, the step of generating the corresponding target gray-scale compensation data based on the image data is followed by: burning the targeted gray scale compensation data to the flash memory; restarting the time schedule controller; and evaluating the compensation effect corresponding to the target gray scale compensation data.
In one embodiment, the step of evaluating the compensation effect corresponding to the target gray-scale compensation data comprises: evaluating a compensation effect corresponding to the target gray scale compensation data; if the compensation effect meets the brightness homogenization display effect, ending the compensation data restoration process; and if the compensation effect does not meet the brightness homogenization display effect, restoring the compensation data again.
As shown in fig. 2, based on the above embodiment, the working process of the compensation data restoration method is as follows:
after the data compensation and repair of the display device are started, firstly performing about 0.6MS operation of erasing the marker bit data, then performing about 1S operation of restarting the timing controller, then performing about 4S parallel processing operation of erasing other data and obtaining and processing image data, then calculating and obtaining target gray scale compensation data according to the image data, then burning the target gray scale compensation data into a flash memory of the display device, and restarting the timing controller again, thus finishing the preliminary operation.
Compared with the conventional compensation data repair process shown in fig. 3, fig. 3 shows that the initial gray scale compensation data is continuously erased by about 4S, and the 1S restart timing controller is not performed until all the initial gray scale compensation data are completely erased. The method comprises the steps of erasing initial gray-scale compensation data in a subsection mode, firstly erasing the flag bit data rarely, then synchronously executing the erasing operation of other data of the initial gray-scale compensation data and the acquisition and processing operation of image data, which need to spend most of time, and saving most of time.
In one embodiment, the present embodiment provides a compensation data restoration apparatus, which is applied to a display apparatus, and the compensation data restoration apparatus operates according to the compensation data restoration method in any one of the above embodiments.
It can be understood that, with the compensation data restoration device provided in this embodiment, the display device can be in the compensation off state by erasing the flag bit data in the initial gray scale compensation data and restarting the timing controller, and then by acquiring the image data and synchronously erasing other data in the initial gray scale compensation data, the synchronization between the acquisition of the image data and the erasing of other data in the initial gray scale compensation data can be realized, so that the time taken by the display device to restore the compensation data or the compensation table is effectively reduced.
As shown in fig. 4, in one embodiment, the compensation data repairing apparatus includes an erase restart module 100, a synchronization process module 200 and a generation module 300, wherein the erase restart module 100 is configured to erase flag bit data in initial gray scale compensation data stored in a flash memory 20 and restart a timing controller 30; the synchronous processing module 200 is configured to obtain image data and synchronously erase other data in the initial gray-scale compensation data; the generating module 300 is configured to generate corresponding target gray-scale compensation data based on the image data.
The erase restart module 100 is electrically connected to the synchronous processing module 200, and the synchronous processing module 200 is electrically connected to the generation module 300. After the erasing and restarting module 100 finishes working, the synchronous processing module 200 is notified to work, and the generating module 300 generates corresponding target gray-scale compensation data according to the image data output by the synchronous processing module 200.
It is understood that the erase restart module 100 may be used to erase flag bit data in the initial gray scale compensation data and/or restart the timing controller 30.
In one embodiment, the compensation data restoring apparatus further includes a burning module 400, and the burning module 400 is used for burning the target gray scale compensation data into the corresponding storage space in the flash memory 20. The burning module 400 can be electrically connected to the generating module 300, the flash memory 20 and the erase restart module 100. After the recording operation in this embodiment is completed, the recording module 400 may notify the erase restart module 100 to restart the timing controller 30 again.
The recording module 400 may include a recorder 401, and the recorder 401 is electrically connected to the flash memory 20 and is configured to write the corresponding gray scale compensation data into the flash memory 20.
As shown in fig. 5, in one embodiment, the display device may include a display panel 10, a flash memory 20, a timing controller 30, and an image signal generator 40, wherein the display panel 10 may be electrically connected to the timing controller 30 and the image signal generator 40, and the timing controller 30 may be electrically connected to the flash memory 20.
The flash memory 20 is disposed on one printed circuit board 21, and the timing controller 30 is disposed on the other printed circuit board. The flash memory 20 may be used to store initial gray scale compensation data and target gray scale compensation data. The timing controller 30 may be, but is not limited to, for reading and/or recognizing the initial gray-scale compensation data or the target gray-scale compensation data according to the flag bit data.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The compensation data restoration method and the compensation data restoration device for the display device provided by the embodiment of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation manner of the present application, and the description of the above embodiment is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A compensation data restoration method of a display device, comprising:
erasing the flag bit data in the initial gray scale compensation data and restarting the time schedule controller, wherein the initial gray scale compensation data is stored in the flash memory;
acquiring image data and synchronously erasing other data in the initial gray-scale compensation data; and
based on the image data, corresponding target gray-scale compensation data is generated.
2. The method according to claim 1, wherein said erasing the flag bit data in the initial gray scale compensation data and restarting the timing controller, the step of storing the initial gray scale compensation data in the flash memory comprises:
determining the flag bit data, wherein the flag bit data is used for reading and/or identifying the initial gray scale compensation data by the time sequence controller;
determining the storage address of the flag bit data in the flash memory; and
and erasing the flag bit data based on the storage address of the flag bit data.
3. The method according to claim 2, wherein said erasing the flag bit data in the initial gray scale compensation data and restarting the timing controller, the step of storing the initial gray scale compensation data in the flash memory comprises:
determining the flag bit data as at least one of a magic number, a cyclic redundancy check code and a header configuration file;
determining the storage address of the sector where the flag bit data is located; and
and erasing the flag bit data based on the storage address of the sector where the flag bit data is located.
4. The compensation data restoration method according to claim 1, wherein the step of acquiring image data and simultaneously erasing other data in the initial gray-scale compensation data comprises:
acquiring image data of binding point gray scales corresponding to the display device;
determining storage addresses of other data in the initial gray scale compensation data; and
and erasing other data in the initial gray-scale compensation data based on the storage addresses of other data in the initial gray-scale compensation data.
5. The compensation data restoration method according to claim 4, wherein the step of acquiring image data and simultaneously erasing other data in the initial gray-scale compensation data comprises:
determining the storage address of the sector where other data in the initial gray scale compensation data are located;
and erasing the storage content of the sector where the other data in the initial gray-scale compensation data are located based on the storage address of the sector where the other data in the initial gray-scale compensation data are located.
6. The compensation data restoration method according to claim 1, wherein the initial grayscale compensation data includes the flag bit data and the other data; the step of storing the initial gray scale compensation data in the flash memory includes:
storing the flag bit data in one group of sectors of the flash memory;
storing the other data in another set of sectors of the flash memory, the another set of sectors being different from the one set of sectors.
7. The compensation data restoration method according to any one of claims 1 to 6, wherein said step of generating corresponding target gray-scale compensation data based on said image data is followed by:
burning the target gray scale compensation data to the flash memory;
restarting the time schedule controller; and
and evaluating the compensation effect corresponding to the target gray scale compensation data.
8. The method according to claim 7, wherein the step of evaluating the compensation effect corresponding to the target gray-scale compensation data comprises:
evaluating a compensation effect corresponding to the target gray scale compensation data;
if the compensation effect meets the brightness homogenization display effect, ending the compensation data restoration process;
and if the compensation effect does not meet the brightness homogenization display effect, restoring the compensation data again.
9. A compensated data restoration device, characterized in that it is applied to a display device, and it operates according to the compensated data restoration method of any one of claims 1 to 8.
10. The compensated data restoration device according to claim 9, wherein the compensated data restoration device comprises:
the erasing restart module is used for erasing the flag bit data in the initial gray scale compensation data and restarting the time schedule controller, and the initial gray scale compensation data is stored in the flash memory;
the synchronous processing module is used for acquiring image data and synchronously erasing other data in the initial gray-scale compensation data; and
and the generating module is used for generating corresponding target gray scale compensation data based on the image data.
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