CN108428430A - A kind of multichannel gamma adjusting methods and device - Google Patents
A kind of multichannel gamma adjusting methods and device Download PDFInfo
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- CN108428430A CN108428430A CN201810189376.XA CN201810189376A CN108428430A CN 108428430 A CN108428430 A CN 108428430A CN 201810189376 A CN201810189376 A CN 201810189376A CN 108428430 A CN108428430 A CN 108428430A
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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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
- G09G2320/0271—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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- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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- Transforming Electric Information Into Light Information (AREA)
- Processing Of Color Television Signals (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The present invention relates to a kind of multichannel gamma adjusting methods and devices, and specifically for each OLED modules to be regulated, independent output is corresponding to play figure instruction, so that module is showed corresponding gamma and tie up 255 pictures of W0 a little；And each OLED modules to be regulated are shared by upper layer software (applications) interface configurations gamma adjustment parameters, the gamma adjustment parameters include each brightness tied up a little, the adjusting of chromaticity coordinates and check error ranges, independent acquisition OLED modules parameter information to be regulated simultaneously obtain the picture after corresponding gamma register values after script compiling output order to correspondence OLED modules to be regulated make it show write-in gamma register values.The present invention can promote the efficiency of gamma regulating systems, make operation more flexible, be more convenient producing line operation, do not interfered between mutual channel and realize that multiloop loop system truly is adjusted, further increase producing line operation production capacity.
Description
Technical field
The present invention relates to a kind of gamma adjusting methods and devices, more particularly, to a kind of multichannel gamma adjusting methods and dress
It sets.
Background technology
OLED Organic Light Emitting Diodes (Organic Light-Emitting Diode, OLED) are also known as organic electric laser
Display, organic luminous semiconductor.Deng Qingyun (Ching W.Tang) is taught by Chinese descendant in America to find in the lab in 1979.
OLED display technologies have many advantages, such as self-luminous, wide viewing angle, almost infinite high contrast, compared with low power consumption, high reaction speed.
It, also can be more expensive than LCD TV in price but as high-end display screen.
OLED was made in technology also in the sustainable development stage at present, major panel manufacturer all in experimental verification and
Try line.Since the not mature enough of technology is made, the module of production certainly exists otherness, this species diversity can directly result in one
Criticizing in module has the initial gamma situations of part module variant, and then influences the debugging efficiency and effect of gamma.
OLED gamma adjust multiloop loop system at present, all in such a way that single thread multichannel is adjusted simultaneously, such test
Method, which encounters the inconsistent module of part being made property of module, can cause adjusting efficiency low, underaction be operated, because can only be simultaneously
Upper piece/bottom sheet polylith module, problem is made when encountering some modules, gamma regulating times are long, and other module regulating times
Soon, it needs to wait for bottom sheet, causes waste of time.Underaction is operated, an emergency situation is encountered can not terminate monolithic module
It adjusts, and the adjusting that another module starts monolithic module can not be accessed again.
Invention content
The above-mentioned technical problem of the present invention is mainly to be addressed by following technical proposals：
A kind of multichannel gamma adjusting methods, which is characterized in that including：
For each OLED modules to be regulated, independent output is corresponding to play figure instruction, so that module is showed corresponding gamma and ties up
The W0-255 pictures of point；
For each OLED modules to be regulated, share by upper layer software (applications) interface configurations gamma adjustment parameters, the gamma
Adjustment parameter includes each brightness tied up a little, the adjusting of chromaticity coordinates and check error ranges, independent acquisition OLED moulds to be regulated
Group parameter information simultaneously obtains compiling output order to correspondence OLED modules to be regulated through script after corresponding gamma register values
It is set to show the picture after write-in gamma register values.Module chromaticity coordinates and brightness after adjusting can be with write-in registers
The size of value and change.
In a kind of above-mentioned multichannel gamma adjusting methods, to play figure instruction be by corresponding to be regulated for independent
OLED mould splits is realized with the corresponding independent IP in LAN.
In a kind of above-mentioned multichannel gamma adjusting methods, output is corresponding play figure instruction after, instructed according to the figure of beating of reception
It is sequentially output and ties up in a rank screen shot to OLED modules to be regulated.
In a kind of above-mentioned multichannel gamma adjusting methods, acquisition OLED module parameter informations are the acquisition packets according to reception
It is acquired, gathered data includes：Then the brightness of OLED modules to be regulated and x, y chromaticity coordinates use current existing adjusting
Algorithm carries out gamma adjustings.
In a kind of above-mentioned multichannel gamma adjusting methods, after the detailed process of script compiling is the optimization according to reception
Gamma register values execute 0x39 write instructions and 0x06 read-back orders by the channels MIPI agreement D0, and are transferred to be regulated
OLED modules.
In a kind of above-mentioned multichannel gamma adjusting methods, further include：After OLED modules to be regulated show write-in optimization
After gamma register value pictures, check adjusts OLED module parameter informations again, makes the brightness of module and chromaticity coordinates after adjusting
Meet the error range of check actions.The purpose acquired again, which prevents part module after adjustment, brightness or chromaticity coordinates
Decay and causes gamma adjustings result invalid.The action reaffirmed similar to one, it is ensured that whole process is errorless.
In a kind of above-mentioned multichannel gamma adjusting methods, gamma register values are believed according to the OLED module parameters of acquisition
Gamma register values after breath and the optimization obtained based on VESA algorithms, the VESA algorithms are based on following formula：
Wherein, ln：N-th order brightness；l255：255 rank brightness；l0:0 rank brightness；γ：Variable one；const：Variable two；
Obtaining the detailed process of the gamma register values after optimization is：It fetches first to the measurement of brightness, operation is so that height
Deviation when brightness is reduced, and the deviation of measured value and fitting a straight line is amplified when low-light level, and human eye deviation is amplified, with people
Sensitivity of the eye under high low-light level is consistent.
In a kind of above-mentioned multichannel gamma adjusting methods, the acquisition of the gamma register values after optimization includes：
Collect the gamma register values after 5 groups of adjustings；
The step of being then based on script compiling calculates const and γ, multigroup lower averaging；
The level finally made according to different modules and client, to mean value make an error range configuration n, const and
γ is used as virtual value in range, and go beyond the scope discarding.
After the completion of a kind of above-mentioned multichannel gamma adjusting methods, each adjustment process, the effect after adjusting meets configuration
Parameter area preserves, and waited for as next after the register value after the completion of adjusting is calculated by VESA algorithms after obtaining optimal value
Adjust the basic value that OLED modules are adjusted.
In addition, carrying out the independent OTP burnings of corresponding channel to adjusting the module completed and after the completion of check adjustings, and mark
Channel number is as the independent module of differentiation.
A kind of multichannel gamma regulating devices, which is characterized in that including a processor, multiple PG programming devices, multiple feet
This resolver, optical device controller, multiple PG programming devices are connected by corresponding script resolver and OLED modules to be regulated
It connecing, optical device controller is connect with processor and OLED modules to be regulated respectively, and the processor is stored with computer program,
It can realize and weigh above-mentioned method and step.
Therefore, the invention has the advantages that：The present invention can promote the efficiency of gamma regulating systems, allow and operate more
Flexibly, be more convenient producing line operation, do not interfered between mutual channel and realize that multiloop loop system truly is adjusted, in summary because
Element further increases producing line operation production capacity.
Description of the drawings
Attached drawing 1 is a kind of hardware connection structure schematic diagram of the present invention.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：
1, software configuration.Upper interface pre-sets reasonable gamma parameters, such as LV, gamma indexes, x y colour codes, emphasis hooks
Select " different channel RGB beat figure ", the option be enable multithreading between it is separately adjustable burning.If figure is software configuration interface, single line
Cheng Duli races mainly have software code realization.
2, communication configuration.The distribution of Hardware I P address is done to the fixation dial-up of 5 PG respectively, uses router constructing local network
Network, upper layer software (applications) are connect by network interface communications protocol with more PG.And the probe pass corresponding with module that CA310 is established in software
System.Correspondence upper layer can freely arrange in pairs or groups, and such benefit avoids the damage of individual PG or CA310, leads to not use.
3, start to adjust.PG, which is received, plays figure instruction, is sequentially output and ties up a rank screen shot, such as W255-W0 ranks.Upper layer issues
Initial gamma register values (the register value algorithm has upper layer preservation by the reasonable value after the calculating of vesa algorithms, the value), together
Step upper layer issues CA310 acquisition packets, is interacted with CA310 by R232 serial port protocols, and CA310 acquires corresponding module brightness respectively
(LV) and x, y chromaticity coordinates, upper layer is returned to.The data packing of acquisition is issued algorithm by upper layer, and algorithm calculates rational gamma
Script is transferred to after register value.Script executes 0x39 write instructions and 0x06 read-back orders by the channels MIPI agreement D0, at this time
Module shows the effect after write-in gamma register values, and upper layer is again by R232 serial acquisition module brightness, until adjusting
Entire adjustment process is completed, and the effect after adjusting meets the parameter area of configuration.Register value after the completion of adjusting passes through VESA
After algorithm calculates, most reasonable value is taken out, returns to upper layer preservation, the basic value adjusted as next time.Whole process persistent loop.
During this, after arbitrary channel helps point to adjust failure, it is adjusted again after all 5 modules have been adjusted without waiting until,
Directly certain channel can be adjusted or replaced after module and adjust again.Time slot can be made full use of to improve efficiency.
VESA methods carry out linear fit to the numerical value of brightness, and fitting gained Monomial coefficient is gamma values.This side
Method first fetches to the measurement of brightness, and operation is so that value.This method first fetches to the measurement of brightness, and operation is so that value.This
Kind of method first fetches to the measurement of brightness, and operation is so that deviation when high brightness is reduced, measured value and fitting when low-light level
The deviation of straight line is amplified, and human eye deviation is amplified, and is consistent with sensitivity of the human eye under high low-light level.In addition,
VESA algorithms use least square method, use least square method of this side in addition to fitting a straight line can be obtained, this side in addition to
The use least square method of fitting a straight line can be obtained, this side may be used also other than the various coefficients that can obtain fitting a straight line
To obtain the phase relation r of data and straight line, when related coefficient closer to 1 when, illustrate the deviation journey of data point and fitting a straight line
Spend it is smaller, otherwise it is bigger, otherwise it is bigger.It is deep prominent far from but in this method but in this method
Go out a little to be affected for final calculation result.The parameter for having adjusted the generation after 5 groups simultaneously, can be calculated by two level equation
Const and γ is asked under multigroupBecause irregular, the const and γ of calculating is made in module-It must be in average value
In fluctuation range, it is more than fluctuation range value and abandons, not as radix processing.According to IC characteristics, VGS [8:0] exist with VGS [V]
Linear relationship, and VGS [8:0] with lv (x, y) there are linear relationship, similarly [8 VGS:0] there are linear relationships with lv (x, y).Instead
To reasoning, 255,0 register value is substituted into, the register value of the ln just asked, for the value just as the initial value that next time is adjusted, this is first
Value is more accurate, and adjusting is faster.By improving governing speed.
Register value after adjusting is written in module EEPROM by 5, OTP burnings, the 4th step above.It is dynamic to execute burning
Work is mainly completed by script, and wherein script distinguishes every PG by chanl, and is held respectively to 10 PG using the channels MIPI d0
Row burning flow：Open MTP voltages-》gamma EN-》check gamma flag-》Burning is completed.
6, result record is adjusted, record gamma adjusts register value and adjusts initial value respectively after the completion of adjusting, and corresponding
Side point adjust a LV, X, Y information.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of multichannel gamma adjusting methods, which is characterized in that including：
For each OLED modules to be regulated, independent output is corresponding to play figure instruction, so that module is showed corresponding gamma and ties up a little
W0-255 pictures；
For each OLED modules to be regulated, share by upper layer software (applications) interface configurations gamma adjustment parameters, the gamma is adjusted
Parameter includes each brightness tied up a little, the adjusting of chromaticity coordinates and check error ranges, independent acquisition OLED modules ginseng to be regulated
Number information simultaneously obtain making it through script compiling output order to correspondence OLED modules to be regulated after corresponding gamma register values
Show the picture after write-in gamma register values.
2. a kind of multichannel gamma adjusting methods according to claim 1, which is characterized in that play figure instruction for independent
It is by being realized with the corresponding independent IP in LAN to corresponding OLED mould splits to be regulated.
3. a kind of multichannel gamma adjusting methods according to claim 1, which is characterized in that output is corresponding to play figure instruction
Afterwards, it is sequentially output and ties up in a rank screen shot to OLED modules to be regulated according to the figure instruction of beating of reception.
4. a kind of multichannel gamma adjusting methods according to claim 1, which is characterized in that acquisition OLED module parameters letter
Breath is acquired according to the acquisition packet of reception, and gathered data includes：The brightness of OLED modules to be regulated and x, y chromaticity coordinates, so
Gamma adjustings are carried out using existing adjusting algorithm at present afterwards.
5. a kind of multichannel gamma adjusting methods according to claim 1, which is characterized in that the detailed process of script compiling
It is that gamma register values after the optimization according to reception pass through the channels MIPI agreement D0 and execute 0x39 write instructions and 0x06 readbacks
Instruction, and it is transferred to OLED modules to be regulated.
6. a kind of multichannel gamma adjusting methods according to claim 1, which is characterized in that further include：OLED moulds to be regulated
After group shows the gamma register value pictures after write-in optimization, check adjusts OLED module parameter informations again, makes adjusting
The brightness of module and chromaticity coordinates meet the error range of check actions afterwards.
7. a kind of multichannel gamma adjusting methods stated according to claim 5, which is characterized in that gamma register values are that basis is adopted
Gamma register values after the OLED modules parameter information of collection and the optimization obtained based on VESA algorithms, the VESA algorithms base
In following formula：
Wherein, ln：N-th order brightness；l255：255 rank brightness；l0:0 rank brightness；γ：Variable one；const：Variable two；
Obtaining the detailed process of the gamma register values after optimization is：It fetches first to the measurement of brightness, operation is so that high brightness
When deviation it is reduced, the deviation of measured value and fitting a straight line is amplified when low-light level, and human eye deviation is amplified, and is existed with human eye
Sensitivity under high low-light level is consistent.
8. a kind of multichannel gamma adjusting methods stated according to claim 7, which is characterized in that the gamma register values after optimization
Acquisition include：
Collect the gamma register values after 5 groups of adjustings；
The step of being then based on script compiling calculates const and γ, multigroup lower averaging；
The level finally made according to different modules and client, the configuration n, const and γ for making an error range to mean value exist
Virtual value is used as in range, go beyond the scope discarding.
9. a kind of multichannel gamma adjusting methods according to claim 1, which is characterized in that after the completion of each adjustment process, adjust
Effect after section meets the parameter area of configuration, after the register value after the completion of adjusting is calculated by VESA algorithms, is optimized
The basic value for preserving after value, and being adjusted as next OLED modules to be regulated.
10. a kind of multichannel gamma regulating devices, which is characterized in that including a processor, multiple PG programming devices, multiple feet
This resolver, optical device controller, multiple PG programming devices are connected by corresponding script resolver and OLED modules to be regulated
It connecing, optical device controller is connect with processor and OLED modules to be regulated respectively, and the processor is stored with computer program,
It can realize claim 1 to 9 any one of them method and step.
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| CN201810189376.XA CN108428430B (en) | 2018-03-06 | 2018-03-06 | Multipath gamma adjusting method and device |
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| CN110517634A (en) * | 2019-08-28 | 2019-11-29 | 霸州市云谷电子科技有限公司 | Gamma-debugged method, gamma-debugged system and display device |
| CN110837352A (en) * | 2019-11-06 | 2020-02-25 | 广东晟合技术有限公司 | Register setting system of OLED driver IC |
| CN112086064A (en) * | 2020-09-22 | 2020-12-15 | 禹创半导体(深圳)有限公司 | Method for applying MIPI instruction comparison mechanism to backlight adjustment |
| CN114203090A (en) * | 2021-12-16 | 2022-03-18 | 霸州市云谷电子科技有限公司 | Gamma debugging method, device and storage medium |
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| CN108428430B (en) | 2020-01-07 |
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