CN106384580A - Gamma automatic correction device and method for LCD logic board - Google Patents
Gamma automatic correction device and method for LCD logic board Download PDFInfo
- Publication number
- CN106384580A CN106384580A CN201610826791.2A CN201610826791A CN106384580A CN 106384580 A CN106384580 A CN 106384580A CN 201610826791 A CN201610826791 A CN 201610826791A CN 106384580 A CN106384580 A CN 106384580A
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- Prior art keywords
- logic card
- gamma
- opencell
- communicator
- correction
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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
-
- 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
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Processing Of Color Television Signals (AREA)
- Picture Signal Circuits (AREA)
Abstract
The invention relates to the technical field of LCDs, and especially relates to a gamma automatic correction device and method for an LCD logic board. The method comprises the following steps that A, software operating in a PC controls the logic board to generate Pattern signals with different gray scales through a communication device; B, the software in the PC reads the brightness value of an OpenCell LCD through a color analyzer, calculates the gamma correction value, and writes the correction value into the logic board through the communication device; the logic board enables the received correction value to be stored in a memory, and finally to serve as the gamma compensation value of image data, so as to correct the brightness characteristic curve of the OpenCell LCD. The logic board directly generates a video signal, the communication device enables the logic board to be connected with the PC and the link of a signal generator is directly skipped, thereby achieving the simple and efficient correction. The method is simple in operation, and is low in cost. A common person can complete the correction operation.
Description
Technical field
The present invention relates to technical field of LCD, more particularly, to a kind of LCD logic card gamma automatic correction device and method.
Background technology
Existing gamma corrected device composition is set by color analysis instrument CA210, signal generator, PC, display to be calibrated
Standby composition.Run on the different Patten video signal of the software control signals generator output of PC, control color analysis simultaneously
Instrument reads the brightness value of LCDs, then calculates the correction value of gamma, by specific download device, correction is saved in aobvious
Show in equipment.
Existing gamma corrected device suffers from the drawback that：
1st, existing gamma correcting device is required for flying-spot video generator, and the special dress communicating with display device
Put composition, with high costs；
2nd, display device product can only be corrected it is impossible to be applied to the gamma correction of OpenCell LCDs；
3rd, complex operation, needs professional just can complete correction work.
Content of the invention
For defect present in prior art or deficiency, the technical problem to be solved is：A kind of LCD is provided
Logic card gamma automatic correction device and method, can apply to the gamma correction of OpenCell LCDs, simple to operate,
Low cost, only need ordinary person just can complete correction work.
To achieve these goals, the technical scheme that the present invention takes is for providing a kind of LCD logic card gamma from dynamic(al) correction
Method, comprises the following steps：
Step A：Operate in the software on PC and pass through the Pattern letter that communicator control logic plate produces different gray scales
Number；
Step B：Software on PC reads the brightness value of OpenCell LCDs, meter by color analysis instrument simultaneously
Calculate the correction value of gamma, then by communicator, correction value is written in logic card, logic card is the correction value receiving
Store in internal memory, eventually serve as the gamma compensated value of video source image data, the brightness of calibration OpenCell LCDs
Characteristic curve.
As a further improvement on the present invention, described step A comprises the following steps：
Step A1：Operate in the USB interface transmitting control commands that software on PC passes through on PC to communicator；
Step A2：Communicator is transmitted to logic card instruction by I2C communication interface；
Step A3：After logic card receives instruction, the definition according to instruction is produced Pattern signal and is delivered to by P2P interface
Show in OpenCell LCDs.
As a further improvement on the present invention, described step B comprises the following steps：
Step B1：Software on PC reads, by USB interface, the OpenCell liquid crystal that color analysis instrument measures in real time
Brightness of display screen value simultaneously carries out correction value calculating；
Step B2：Correction value after calculating is sent to communicator by the USB interface of PC；
Step B3：Communicator is transmitted to logic card correction value by I2C communication interface again.
The computing formula of described correction value is：
x：Current brightness level, Lr：Actual measurement brightness value, Le：Expect brightness value.
As a further improvement on the present invention, described Pattern signal includes red, green, blue, the pattern of Bai Si kind color,
Every kind of pattern is divided into 0～255 kind of brightness degree.
A kind of device using above-mentioned LCD logic card gamma auto-correction method, including PC, communicator, logic card,
OpenCell LCDs, color analysis instrument, described PC is connected with described communicator by USB cable, described communication
Device is connected with described logic card by I2C communication interface, and described logic card passes through P2P interface and described OpenCell liquid crystal
Display screen is connected, and described computer is connected with described color analysis instrument by USB cable, and described color analysis instrument is adopted by optic probe
Collect the brightness of described OpenCell LCDs.
The invention has the beneficial effects as follows：The present invention directly produces video signal by logic card, and is allowed by communicator
Logic card is interconnected with PC, direct this link of bypass signal generator, thus realizing simply efficient trimming process, the present invention
Simple to operate, low cost, only need ordinary person just can complete correction work.
Brief description
Fig. 1 is the installation drawing that the present invention provides.
Specific embodiment
The present invention is further described for explanation and specific embodiment below in conjunction with the accompanying drawings.
The present invention provides a kind of LCD logic card gamma to fill method from dynamic(al) correction, comprises the following steps：
Step A：Operate in the software on PC and pass through the Pattern letter that communicator control logic plate produces different gray scales
Number；
Step B：Software on PC reads the brightness value of OpenCell LCDs, meter by color analysis instrument simultaneously
Calculate the correction value of gamma, then by communicator, correction value is written in logic card, logic card is the correction value receiving
Store in internal memory, eventually serve as the gamma compensated value of video source image data, the brightness of calibration OpenCell LCDs
Characteristic curve.
Described step A comprises the following steps：
Step A1：Operate in the USB interface transmitting control commands that software on PC passes through on PC to communicator；
Step A2：Communicator is transmitted to logic card instruction by I2C communication interface；
Step A3：After logic card receives instruction, the definition according to instruction is produced Pattern signal and is delivered to by P2P interface
Show in OpenCell LCDs.Logic card is drive control OpenCell LCDs also known as T-CON plate
Device, the view data that it sends signal source is converted into the data form that OpenCell LCDs can receive,
Described step B comprises the following steps：
Step B1：Software on PC reads, by USB interface, the OpenCell liquid crystal that color analysis instrument measures in real time
Brightness of display screen value simultaneously carries out correction value calculating；Color analysis instrument be a kind of brightness that can measure the light that LCDs send simultaneously
It is converted into the instrument of digital quantity, PC can go to read the brightness value measuring by USB interface.
Step B2：Correction value after calculating is sent to communicator by the USB interface of PC；
Step B3：Communicator is transmitted to logic card correction value by I2C communication interface again.
The computing formula of described correction value is：
x：Current brightness level, Lr：Actual measurement brightness value, Le：Expect brightness value.
Described Pattern signal includes the pattern (red, green, blue, white) of 4 kinds of colors, every kind of pattern be divided into 0～255 kind bright
Degree grade.
As shown in figure 1, a kind of device using above-mentioned LCD logic card gamma auto-correction method, including PC, communication dress
Put, logic card, OpenCell LCDs, color analysis instrument, described PC pass through USB cable and described communicator phase
Even, described communicator is connected with described logic card by I2C communication interface, described logic card by P2P interface with described
OpenCell LCDs are connected, and described computer is connected with described color analysis instrument by USB cable, described color analysis instrument
It is connected with described OpenCell LCDs by optic probe.Described color analysis instrument adopts CA-310 type.
Above content is to further describe it is impossible to assert with reference to specific preferred implementation is made for the present invention
Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of present inventive concept, some simple deduction or replace can also be made, all should be considered as belonging to the present invention's
Protection domain.
Claims (6)
1. a kind of LCD logic card gamma auto-correction method it is characterised in that：Comprise the following steps：
Step A：Operate in the software on PC and pass through the Pattern signal that communicator control logic plate produces different gray scales；
Step B：Software on PC reads the brightness value of OpenCell LCDs by color analysis instrument simultaneously, calculates
The correction value of gamma, is then written to correction value in logic card by communicator, and logic card is the correction value storage receiving
To in internal memory, eventually serve as the gamma compensated value of video source image data, the brightness of calibration OpenCell LCDs
Curve.
2. LCD logic card gamma auto-correction method according to claim 1 it is characterised in that：Described step A include with
Lower step：
Step A1：Operate in the USB interface transmitting control commands that software on PC passes through on PC to communicator；
Step A2：Communicator is transmitted to logic card instruction by I2C communication interface；
Step A3：After logic card receives instruction, the definition according to instruction is produced Pattern signal and is delivered to by P2P interface
Show in OpenCell LCDs.
3. LCD logic card gamma auto-correction method according to claim 1 it is characterised in that：Described step B include with
Lower step：
Step B1：Software on PC reads, by USB interface, the OpenCell liquid crystal display that color analysis instrument measures in real time
Screen brightness value simultaneously carries out correction value calculating；
Step B2：Correction value after calculating is sent to communicator by the USB interface of PC；
Step B3：Communicator is transmitted to logic card correction value by I2C communication interface again.
4. the LCD logic card gamma auto-correction method according to claim 1 or 3 it is characterised in that：Described correction value
Computing formula is：
x：Current brightness level, Lr：Actual measurement brightness value, Le：Expect brightness value.
5. the LCD logic card gamma auto-correction method according to claim 1 or 3 it is characterised in that：Described Pattern
Signal includes red, green, blue, the pattern of Bai Si kind color, and every kind of pattern is divided into 0～255 kind of brightness degree.
6. a kind of usage right require 1LCD logic card gamma automatic correction device it is characterised in that：Including PC, communication dress
Put, logic card, OpenCell LCDs, color analysis instrument, described PC pass through USB cable and described communicator phase
Even, described communicator is connected with described logic card by I2C communication interface, described logic card by P2P interface with described
OpenCell LCDs are connected, and described computer is connected with described color analysis instrument by USB cable, described color analysis instrument
Gather the brightness of described OpenCell LCDs by optic probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826791.2A CN106384580A (en) | 2016-09-14 | 2016-09-14 | Gamma automatic correction device and method for LCD logic board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826791.2A CN106384580A (en) | 2016-09-14 | 2016-09-14 | Gamma automatic correction device and method for LCD logic board |
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| CN201610826791.2A Pending CN106384580A (en) | 2016-09-14 | 2016-09-14 | Gamma automatic correction device and method for LCD logic board |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123385A (en) * | 2017-02-10 | 2017-09-01 | 北京集创北方科技股份有限公司 | Gamma curve correcting method and system |
| CN108535899A (en) * | 2018-04-13 | 2018-09-14 | 深圳市华星光电技术有限公司 | TFT-LCD data-flow detections method, electronic device and computer readable storage medium |
| CN109215590A (en) * | 2018-09-06 | 2019-01-15 | 深圳市华星光电技术有限公司 | Power control system and display |
| CN109286815A (en) * | 2018-11-30 | 2019-01-29 | 福建捷联电子有限公司 | A kind of positioning of display equipment picture center and automatic testing method |
| CN109979365A (en) * | 2019-03-22 | 2019-07-05 | 惠科股份有限公司 | Debugging method, driving method of display device and display device |
| CN110400548A (en) * | 2019-07-05 | 2019-11-01 | 深圳市华星光电技术有限公司 | The white balance adjustment system and its method of adjustment of display |
| CN111326094A (en) * | 2018-12-14 | 2020-06-23 | 三星显示有限公司 | Display device |
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| CN102113046A (en) * | 2008-08-01 | 2011-06-29 | 希毕克斯影像有限公司 | Gamma adjustment with error diffusion for electrophoretic displays |
| CN104008736A (en) * | 2013-02-26 | 2014-08-27 | 合肥京东方光电科技有限公司 | Apparatus for automatically adjusting gamma curve of LCD, and optical debugging apparatus |
| CN205541813U (en) * | 2016-01-29 | 2016-08-31 | 深圳中科维优科技有限公司 | Full -automatic measurement and curved device of calibration display screen gamma |
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| JP2003005278A (en) * | 2001-06-20 | 2003-01-08 | Fujitsu General Ltd | Liquid crystal projector |
| CN101211035A (en) * | 2006-12-29 | 2008-07-02 | 群康科技(深圳)有限公司 | LCD display gamma correction system and method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123385A (en) * | 2017-02-10 | 2017-09-01 | 北京集创北方科技股份有限公司 | Gamma curve correcting method and system |
| CN108535899A (en) * | 2018-04-13 | 2018-09-14 | 深圳市华星光电技术有限公司 | TFT-LCD data-flow detections method, electronic device and computer readable storage medium |
| CN108535899B (en) * | 2018-04-13 | 2021-06-01 | Tcl华星光电技术有限公司 | TFT-LCD data stream detection method, electronic device and computer readable storage medium |
| CN109215590A (en) * | 2018-09-06 | 2019-01-15 | 深圳市华星光电技术有限公司 | Power control system and display |
| CN109286815A (en) * | 2018-11-30 | 2019-01-29 | 福建捷联电子有限公司 | A kind of positioning of display equipment picture center and automatic testing method |
| CN111326094A (en) * | 2018-12-14 | 2020-06-23 | 三星显示有限公司 | Display device |
| CN109979365A (en) * | 2019-03-22 | 2019-07-05 | 惠科股份有限公司 | Debugging method, driving method of display device and display device |
| CN109979365B (en) * | 2019-03-22 | 2021-08-06 | 惠科股份有限公司 | Debugging method, driving method of display device and display device |
| CN110400548A (en) * | 2019-07-05 | 2019-11-01 | 深圳市华星光电技术有限公司 | The white balance adjustment system and its method of adjustment of display |
| WO2021003808A1 (en) * | 2019-07-05 | 2021-01-14 | Tcl华星光电技术有限公司 | White balance adjusting system of display and adjusting method therefor |
| US11341876B2 (en) | 2019-07-05 | 2022-05-24 | Tcl China Star Optoelectronics Technology Co., Ltd. | White balance adjusting system for display device and adjusting method thereof |
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Application publication date: 20170208 |
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| RJ01 | Rejection of invention patent application after publication |