CN109286803A - A kind of method that production line automatically selects TV Gamma - Google Patents
A kind of method that production line automatically selects TV Gamma Download PDFInfo
- Publication number
- CN109286803A CN109286803A CN201811184182.7A CN201811184182A CN109286803A CN 109286803 A CN109286803 A CN 109286803A CN 201811184182 A CN201811184182 A CN 201811184182A CN 109286803 A CN109286803 A CN 109286803A
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- CN
- China
- Prior art keywords
- gamma
- production line
- chromaticity coordinates
- gamma data
- automatically selects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
Abstract
The invention discloses a kind of methods that production line automatically selects TV Gamma, comprising: step A: a preset initial color coordinates (X0, Y0) on television；Step B: preset a plurality of Gamma data on television, the different reference color temperature of every Gamma data cover；Step C: the current chromaticity coordinates (X1, Y1) of TV is read, and current chromaticity coordinates (X1, Y1) is passed into TV；Current chromaticity coordinates (X1, Y1) and initial color coordinates (X0, Y0) is compared by TV software, determines the Gamma data called.The present invention reads video screen colour temperature coordinate by controlling equipment automatically, and according to preset Gamma channel selection algorithm, the optimal Gamma data of current screen are automatically selected out, the problems such as the production cost increases brought by artificial selection Gamma data, and production efficiency reduces on existing production line is solved.
Description
Technical field
The present invention relates to liquid crystal display technical fields, are that a kind of production line automatically selects TV Gamma specifically
Method.
Background technique
Currently, the competition of domestic household electric appliances is more and more fierce, in order to reduce cost, strive for the advantage in price, it is domestic
The screen mould group overwhelming majority that TV uses all switchs to use producer from molding group.It can largely be reduced into from molding group
Originally, the shortcomings that but there is also itself, i.e., it is excessively poor in terms of consistency, often there is same a collection of mould group, each other colour temperature
Difference is very big, can not correct back to being debugged automatically when production using white balance because of too big with standard difference
Come.In order to solve this problem, laboratory can shift to an earlier date preset a plurality of Gamma data and (be respectively at difference when image quality is debugged
Color temperature regions).On TV production line, before debugging white balance, by operator elder generation test screen colour temperature, colour temperature area is determined
Between, corresponding Gamma data are then selected, then debug white balance again.For this purpose, production line needs more multiple stations of increase, come
Gamma selection is exclusively carried out, colour temperature coordinate is such as tested, reference color temperature, control TV selection Gamma data etc. are calculated, to lead
The increase of production cost is caused, meanwhile, artificial to calculate range of color temperature reselection Gamma data, a possibility that error, greatly increases, meeting
Lead to operation repeatedly, influences working efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of methods that production line automatically selects TV Gamma, for solving existing skill
In art on production line before debugging white balance, need manually to determine range of color temperature Gamma data manufacturing cost corresponding with selection
And the problem of error rate increase.
The present invention is solved the above problems by following technical proposals:
A kind of method that production line automatically selects TV Gamma, comprising:
Step A: a preset initial color coordinates (X0, Y0) on television；
Step B: preset a plurality of Gamma data on television, the different reference color temperature of every Gamma data cover；
Step C: the current chromaticity coordinates (X1, Y1) of TV is read, and current chromaticity coordinates (X1, Y1) is passed into TV；Electricity
Current chromaticity coordinates (X1, Y1) and initial color coordinates (X0, Y0) is compared depending on software, determines the Gamma data called.
Further, it is specifically included in the step C:
Step C1: after control TV enters automatic debugging mode, video screen shows test signal；
Step C2: reading current chromaticity coordinates (X1, Y1), and current chromaticity coordinates (X1, Y1) is passed to TV；
Step C3: according to the size of Δ X and Δ Y, current television needs are determined according to the Gamma channel selection algorithm of budget
The Gamma data which item is preset are called, wherein Δ X=X0-X1 and Δ Y=Y0-Y1.
Further, the test signal is passed to TV or TV built-in testing signal using outer signal generator.
Further, in the step C2 using any one mode in serial ports, bluetooth, WIFI and USB by current color
Coordinate (X1, Y1) passes to TV.
Further, current chromaticity coordinates (X1, Y1) is read using Luminance Analysis instrument in the step C2.
It further, further include that will determine that the Gamma data Index of calling saves and arrive the ROM of TV, for opening every time
Gamma data are called when machine.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
The present invention reads video screen colour temperature coordinate by controlling equipment automatically, and selects according to preset Gamma data
Algorithm automatically selects out the optimal Gamma data of current screen, solves artificial selection Gamma data institute band on existing production line
Carry out the problems such as the production cost increases, and production efficiency reduces.
Detailed description of the invention
Fig. 1 is the principle of the present invention block diagram.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1:
In conjunction with shown in attached drawing 1, a kind of method that production line automatically selects TV Gamma, including be arranged in debugged TV
Machine shows the Luminance Analysis instrument before screen, and Luminance Analysis instrument is connect with PC, PC is connect with debugged television set by serial ports.
S1: when laboratory adjusts image quality parameter, according to the characteristic for using mould group, the colour temperature of mould group is divided into four
Then region, i.e. 8500K~10000K, 10000K~11500K, 11500K~13000K are directed to each color temperature regions, preset
One correction Gamma；
S2: connect in the production line by serial ports by TV with PC with reference to Fig. 1, will be CA210 Luminance Analysis instrument or
CA310 Luminance Analysis instrument is connected by USB interface with PC, is prepared for Gamma selection；
S3: control TV enters debugging mode, and controls the white field test pattern that TV gets 80% brightness；
S4: control Luminance Analysis instrument acquires screen color temp coordinate, and coordinate (X1, Y1) is passed to PC；
Coordinate (X1, Y1) is passed to TV by serial ports by the end S5:PC；
S6: after receiving coordinate (X1, Y1), the rule referring to shown in table 1 is compared TV with chromaticity coordinates (X0, Y0),
Determine the Gamma data for needing selection；
1 Gamma channel selection algorithm of table
S7: the Gamma data of selection being saved, and flush to Soc, while informing that PC selection is completed by serial ports, is entered
Next step scheduling and planning.
The present invention reads video screen colour temperature coordinate by controlling equipment automatically, and selects according to preset Gamma data
Algorithm automatically selects out the optimal Gamma data of current screen, solves artificial selection Gamma data institute band on existing production line
Carry out the problems such as the production cost increases, and production efficiency reduces.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art
Member can be designed that a lot of other modification and implementations, these modifications and implementations will fall in principle disclosed in the present application
Within scope and spirit.
Claims (6)
1. a kind of method that production line automatically selects TV Gamma characterized by comprising
Step A: a preset initial color coordinates (X0, Y0) on television；
Step B: preset a plurality of Gamma data on television, the different reference color temperature of every Gamma data cover；
Step C: the current chromaticity coordinates (X1, Y1) of TV is read, and current chromaticity coordinates (X1, Y1) is passed into TV；TV is soft
Current chromaticity coordinates (X1, Y1) and initial color coordinates (X0, Y0) is compared by part, determines the Gamma data called.
2. the method that a kind of production line according to claim 1 automatically selects TV Gamma, which is characterized in that the step
It is specifically included in rapid C:
Step C1: after control TV enters automatic debugging mode, video screen shows test signal；
Step C2: reading current chromaticity coordinates (X1, Y1), and current chromaticity coordinates (X1, Y1) is passed to TV；
Step C3: according to the size of Δ X and Δ Y, determine that current television needs to call according to the Gamma channel selection algorithm of budget
The preset Gamma data of any item, wherein Δ X=X0-X1 and Δ Y=Y0-Y1.
3. the method that a kind of production line according to claim 2 automatically selects TV Gamma, which is characterized in that the survey
Trial signal is passed to TV or TV built-in testing signal using outer signal generator.
4. the method that a kind of production line according to claim 2 automatically selects TV Gamma, which is characterized in that the step
Current chromaticity coordinates (X1, Y1) is passed to by TV using any one mode in serial ports, bluetooth, WIFI and USB in rapid C2.
5. the method that a kind of production line according to claim 4 automatically selects TV Gamma, which is characterized in that the step
Current chromaticity coordinates (X1, Y1) is read using Luminance Analysis instrument in rapid C2.
6. the method that a kind of production line according to claim 1 automatically selects TV Gamma, which is characterized in that further include
It determining that the Gamma data Index called is saved and arrived the ROM of TV, Gamma data is called when for being switched on every time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811184182.7A CN109286803A (en) | 2018-10-11 | 2018-10-11 | A kind of method that production line automatically selects TV Gamma |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811184182.7A CN109286803A (en) | 2018-10-11 | 2018-10-11 | A kind of method that production line automatically selects TV Gamma |
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| CN109286803A true CN109286803A (en) | 2019-01-29 |
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| CN201811184182.7A Pending CN109286803A (en) | 2018-10-11 | 2018-10-11 | A kind of method that production line automatically selects TV Gamma |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845232A (en) * | 2005-04-08 | 2006-10-11 | 浙江大学 | Automatic measurement and correction method and system for LCD GAMMA curve and color temperature |
| US20100259551A1 (en) * | 2009-04-08 | 2010-10-14 | Hon Hai Precision Industry Co., Ltd. | White balance correction method |
| CN105872511A (en) * | 2016-02-05 | 2016-08-17 | 四川长虹电器股份有限公司 | Method for improving color temperature consistency of flat panel television through multiple gamma curves |
| CN108322739A (en) * | 2018-02-06 | 2018-07-24 | 四川长虹电器股份有限公司 | A kind of LCD TV gamma adjustment method of reduce brightness loss |
-
2018
- 2018-10-11 CN CN201811184182.7A patent/CN109286803A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845232A (en) * | 2005-04-08 | 2006-10-11 | 浙江大学 | Automatic measurement and correction method and system for LCD GAMMA curve and color temperature |
| US20100259551A1 (en) * | 2009-04-08 | 2010-10-14 | Hon Hai Precision Industry Co., Ltd. | White balance correction method |
| CN105872511A (en) * | 2016-02-05 | 2016-08-17 | 四川长虹电器股份有限公司 | Method for improving color temperature consistency of flat panel television through multiple gamma curves |
| CN108322739A (en) * | 2018-02-06 | 2018-07-24 | 四川长虹电器股份有限公司 | A kind of LCD TV gamma adjustment method of reduce brightness loss |
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Application publication date: 20190129 |
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| RJ01 | Rejection of invention patent application after publication |