CN101695112A - Method for regulating luminance and contrast ratio of digital televisions - Google Patents
Method for regulating luminance and contrast ratio of digital televisions Download PDFInfo
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- CN101695112A CN101695112A CN200910308946A CN200910308946A CN101695112A CN 101695112 A CN101695112 A CN 101695112A CN 200910308946 A CN200910308946 A CN 200910308946A CN 200910308946 A CN200910308946 A CN 200910308946A CN 101695112 A CN101695112 A CN 101695112A
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Abstract
The invention relates to the technical field of digital televisions, in particular to a method for regulating the luminance and the contrast ratio of digital televisions, which solves the problem that the index of the regulating parameter of the digital television in the prior art can not be quantized, and the effect of the integral machine is poor. The key points of the technical solution of the method can comprise regulating the parameter value of the corresponding analog quantity in a factory menu non-linear parameter table through observing the gray scale of a Toshiba card or sixteen gray scale signals under the state of each optional value of the luminance and the contrast ratio of user menus. The method has the beneficial effects that the luminance and the contrast ratio of the digital televisions are quantified, the effect of the picture quality of the integral machine is improved, and the method is suitable for regulating the luminance and the contrast ratio of the digital televisions.
Description
Technical field
The present invention relates to the digital television techniques field, relate to digital television brightness and contrast adjustment method specifically.
Background technology
Television product comprises liquid crystal, plasma, picture tube, projection etc. at present, and movement all adopts digital processing chip.Simulation process chip with respect to former has the integrated level height, and overall process adopts digital processing, also is characteristics such as digital signal as products such as liquid crystal, plasmas until the display part.
In the analog chip epoch, the adjustment method of analog quantity adopts oscilloscope to check signal waveform step by step, carries out meticulous debugging according to the variation of waveform.And for digital movement, because signal digitlization, oscilloscope can not be checked through amplitude, the direct current equality parameter relevant with debugging of signal, therefore needs a kind of brand-new adjustment method.
The popular approach of industry is to carry out subjective assessment at present, carries out subjective judgement according to engineer's self experience.This is a kind of mode of fuzzy debugging.Cause a lot of parameter indexs to quantize, strong to engineer individual dependence.Homogeneity of product is poor, and is bigger to the whole structure influence of complete machine.
Summary of the invention
Technical problem to be solved by this invention is: propose a kind of normalized digital television brightness and contrast adjustment method, the tuning parameter index to the Digital Television analog quantity in the solution prior art can't quantize, and causes the problem of complete machine weak effect.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: digital television brightness and contrast adjustment method may further comprise the steps:
The brightness debugging adopts Toshiba's card as signal standards under the a.TV passage, all analog quantity parameter options are set to standard in the custom menu, analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, make the 5th, 6 rank of image article one GTG just have aberration, be the luminance standard state;
B. the brightness option is set to maximum in the custom menu, and analog quantity debugging ratio is the value of 100 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, makes the 1st, 2 rank of image article one GTG just have aberration, is the brightness maximum rating;
C. all analog quantity parameter options are set to standard in the custom menu, the contrast option is set to maximum in the custom menu, analog quantity debugging ratio is the value of 100 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, make the 10th, 11 rank of image second GTG just not have aberration, be the contrast maximum rating, and write down the brightness on second GTG the 6th rank;
D. contrast is set to 0 in the custom menu, analog quantity debugging ratio is the value of 0 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, the brightness on second GTG the 6th rank was the contrast minimum state when brightness on the 11st rank just equaled the contrast maximum in the feasible second GTG at this moment;
E. brightness option, contrast option and saturation option in the custom menu are all put 0, analog quantity debugging ratio is the value of 0 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, makes to be the brightness minimum state by the whole blank screens of picture;
F. all analog quantity parameter options are set to standard in the custom menu, receive active signal, analog quantity debugging ratio is the value of 75 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, and analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the fine setting factory menu nonlinear parameter table, guarantee that picture details in a play not acted out on stage, but told through dialogues details is distinguishable, picture is burnt hair not, and bright field signal not amplitude limit, burnt hair not, and there is aberration in the 5th, 6 rank that guarantee article one GTG, are contrast standard state;
G. debug for the brightness under the non-TV passage, with 16 GTG signals is signal standards, all analog quantity parameter options are set to standard in the custom menu, analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, make 16 GTG signals the 1st, 2 rank to differentiate, be the luminance standard state; The brightness option is set to maximum in the custom menu, and analog quantity debugging ratio is the value of 100 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, makes the 15th, 16 rank of 16 GTG signals just not have aberration, is the brightness maximum rating; The value of brightness in the custom menu, contrast, saturation is transferred to 0, and analog quantity debugging ratio is the value of 0 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, guarantees the picture blank screen, is the brightness minimum state;
H. debug for the contrast under the non-TV passage, with 16 GTG signals is signal standards, all analog quantity parameter options are set to standard in the custom menu, the contrast option is set to maximum in the custom menu, analog quantity debugging ratio is the value of 100 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, make the 15th, the 16 rank amplitude limit just of 16 GTG signals to be the contrast maximum rating, write down the brightness value on the 7th rank simultaneously; Contrast option in the custom menu is put 0, adjust that analog quantity debugging ratio is the value of 0 o'clock CONTRAST in factory's menu nonlinear parameter table, make the brightness value on the 16th rank just equal the brightness value on contrast the 7th rank when maximum, be the contrast minimum state; All analog quantity parameter options are set to standard in the custom menu, receive active signal, analog quantity debugging ratio is the value of 75 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, and fine setting analog quantity debugging ratio is the value of 50 o'clock BRIGHT, guarantee distinguishable, the burnt hair not of details in a play not acted out on stage, but told through dialogues details, bright field is burnt hair, amplitude limit not, and will guarantee that 16 GTG signals can all show, are contrast standard state.
Described non-TV passage comprises: AV passage, S passage, YPBPR passage, HDMI passage and VGA passage.
Further, further comprising the steps of before step a:
(1) carries out GAMMA curve and white balance debugging, guarantee the correctness of colour temperature;
(2) finishing ADC under YPBPR passage, VGA passage proofreaies and correct;
(3) close complete machine black level extension function.
The invention has the beneficial effects as follows: digital TV brightness and contrast debugging are quantized, improve complete machine image quality effect.
Embodiment
The invention will be further described below in conjunction with embodiment.
Content of the present invention is exactly a kind of method of brightness and contrast in the movement analog quantity being debugged when using digital processing chip, and it is with the systematization that standardizes of a very random very fuzzy mode, to overcome the above problems.Parameter value by in the nonlinear parameter table of adjusting factory's menu can quantize analog quantity parameter, and unified state guarantees each complete machine consistency, promotes product image quality effect.
The custom menu table is as follows:
| Minimum value | Standard state | Maximum | |
| Bright | 0 | 50 | 100 |
| Minimum value | Standard state | Maximum | |
| CONTRAST | 0 | 80 | 100 |
| COLOR | 0 | 50 | 100 |
| SHARPNESS | 0 | 50 | 100 |
The nonlinear parameter table of factory's menu is as follows:
| ????0 | ????25 | ????50 | ????75 | ????100 | |
| Bright | ????64 | ????96 | ????117 | ????128 | ????130 |
| CONTRAST | ????75 | ????101 | ????120 | ????138 | ????155 |
| COLOR | ????0 | ????96 | ????104 | ????160 | ????208 |
| SHARPNESS | ????0 | ????8 | ????16 | ????32 | ????50 |
| HUE | ????0 | ????64 | ????128 | ????192 | ????255 |
Before debugging, the preparation that should finish:
1. the debugging model machine at first will be finished the debugging of various signal format white balance states under the debugging of GAMMA curve and each SOURCE;
2. the debugging model machine is finished the ADC correction under YPBPR, VGA passage;
3. will debug in the model machine custom menu " black level extension " function setting and be " pass " state.The effect of above-mentioned steps is exactly the accuracy in order to guarantee to debug.
Be set forth in the debugging of brightness and contrast under TV passage and the non-TV passage below:
One, the debugging under the TV passage:
(1) the brightness debugging adopts Toshiba's card as signal standards under the TV passage, image model is set to standard, and (soon all analog quantity parameter options are set to standard in the custom menu, comprise brightness option, contrast option, saturation option or the like), analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, make the 5th, 6 rank of image article one GTG just have aberration, be the luminance standard state;
(2) the brightness option is set to maximum in the custom menu, and analog quantity debugging ratio is the value of 100 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, makes the 1st, 2 rank of image article one GTG just have aberration, is the brightness maximum rating;
(3) image model is set to standard, the contrast option is set to maximum in the custom menu, analog quantity debugging ratio is the value of 100 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, make the 10th, 11 rank of image second GTG just not have aberration, be the contrast maximum rating, and write down the brightness on second GTG the 6th rank;
(4) contrast is set to 0 in the custom menu, analog quantity debugging ratio is the value of 0 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, the brightness on second GTG the 6th rank was the contrast minimum state when brightness on the 11st rank just equaled the contrast maximum in the feasible second GTG at this moment;
(5) brightness option, contrast option and saturation option in the custom menu are all put 0, analog quantity debugging ratio is the value of 0 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, makes to be the brightness minimum state by the whole blank screens of picture;
(6) image model is set to standard, receive active signal, analog quantity debugging ratio is the value of 75 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, and analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the fine setting factory menu nonlinear parameter table, guarantee that picture details in a play not acted out on stage, but told through dialogues details is distinguishable, picture is burnt hair not, and bright field signal not amplitude limit, burnt hair not, and there is aberration in the 5th, 6 rank that guarantee article one GTG, are contrast standard state.
Two, the adjustment method of the brightness under the non-TV passage (AV passage, S passage, YPBPR passage, HDMI passage and VGA passage) and the debugging of contrast: AV, S, YPBPR, HDMI, VGA passage is identical, but the parameter of nonlinear parameter table respectively is a cover under each passage factory menu, and is unrelated.The TV passage is the basis, and after debugging was finished, just as the initial default value of the debugging of each passage, method was as follows for its parameter:
(1) be with the TV state consistency with the parameter modification in the nonlinear parameter table in factory's menu, receive 16 GTG signals, the user images pattern is set to standard, brightness is set to maximum again, analog quantity debugging ratio is the value of 100 o'clock BRIGHT in the adjustment nonlinear parameter table, make the 15th, 16 liang of rank of 16 GTGs just not have aberration, at this moment be the brightness maximum rating;
(2) the user images pattern is set to standard, and contrast is set to maximum again, and analog quantity debugging ratio is the value of 100 o'clock CONTRAST in the adjustment nonlinear parameter table, makes the 15th, 16 liang of rank of 16 GTGs just not have aberration, at this moment is the contrast maximum rating; Note the brightness on the 7th rank simultaneously with luminance meter;
(3) the user images pattern is set to standard, and analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the adjustment nonlinear parameter table, and the 1st, 2 liang of rank of 16 GTGs can just be differentiated, and at this moment is the luminance standard state;
(4) the user images pattern is set to standard, contrast is set to 0 again, adjusting that analog quantity debugging ratio is the value of 0 o'clock CONTRAST in the nonlinear parameter table, make the brightness on the 16th rank just equal the brightness on contrast the 7th rank when maximum, at this moment is the contrast minimum state;
(5) value of brightness in the custom menu, contrast, saturation is transferred to 0, analog quantity debugging ratio is the value of 0 o'clock BRIGHT in the adjustment nonlinear parameter table, guarantees the picture blank screen, and value at this moment is the brightness minimum state;
(6) the user images pattern is set to standard, receive various test signals, comprise still picture and active signal, analog quantity debugging ratio is the value of 75 o'clock CONTRAST in the adjustment nonlinear parameter table, and analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the fine setting nonlinear parameter table, makes picture have stronger third dimension, bright sense, there is aberration in the details in a play not acted out on stage, but told through dialogues details, burnt hair not, bright field is burnt hair not, not amplitude limit.At this moment value is contrast standard state;
(7) after above-mentioned steps has been debugged, be the value of 50 o'clock BRIGHT, need echo check 16 GTG signals, guarantee that 16 GTGs can all show, adjust repeatedly, to the last reach promising result owing to finely tuned analog quantity debugging ratio.So far, finish the brightness under each passage and the debugging of contrast.
Signal source equipment among the present invention can adopt standard signal generator, set-top box, digital code player (as TVX etc.), blue-ray DVD, common DVD etc., and the test signal content comprises: Toshiba's card, 16 GTG signals or the like.Based on set-top box signal, YPBPR, HDMI passage are based on digital code player, blue-ray DVD under the active signal AV passage.
Claims (3)
1. digital television brightness and contrast adjustment method is characterized in that: may further comprise the steps:
The brightness debugging adopts Toshiba's card as signal standards under the a.TV passage, all analog quantity parameter options are set to standard in the custom menu, analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, make the 5th, 6 rank of image article one GTG just have aberration, be the luminance standard state;
B. the brightness option is set to maximum in the custom menu, and analog quantity debugging ratio is the value of 100 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, makes the 1st, 2 rank of image article one GTG just have aberration, is the brightness maximum rating;
C. all analog quantity parameter options are set to standard in the custom menu, the contrast option is set to maximum in the custom menu, analog quantity debugging ratio is the value of 100 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, make the 10th, 11 rank of image second GTG just not have aberration, be the contrast maximum rating, and write down the brightness on second GTG the 6th rank;
D. contrast is set to 0 in the custom menu, analog quantity debugging ratio is the value of 0 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, the brightness on second GTG the 6th rank was the contrast minimum state when brightness on the 11st rank just equaled the contrast maximum in the feasible second GTG at this moment;
E. brightness option, contrast option and saturation option in the custom menu are all put 0, analog quantity debugging ratio is the value of 0 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, makes to be the brightness minimum state by the whole blank screens of picture;
F. all analog quantity parameter options are set to standard in the custom menu, receive active signal, analog quantity debugging ratio is the value of 75 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, and analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the fine setting factory menu nonlinear parameter table, guarantee that picture details in a play not acted out on stage, but told through dialogues details is distinguishable, picture is burnt hair not, and bright field signal not amplitude limit, burnt hair not, and there is aberration in the 5th, 6 rank that guarantee article one GTG, are contrast standard state;
G. debug for the brightness under the non-TV passage, with 16 GTG signals is signal standards, all analog quantity parameter options are set to standard in the custom menu, analog quantity debugging ratio is the value of 50 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, make 16 GTG signals the 1st, 2 rank to differentiate, be the luminance standard state; The brightness option is set to maximum in the custom menu, and analog quantity debugging ratio is the value of 100 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, makes the 15th, 16 rank of 16 GTG signals just not have aberration, is the brightness maximum rating; The value of brightness in the custom menu, contrast, saturation is transferred to 0, and analog quantity debugging ratio is the value of 0 o'clock BRIGHT in the adjustment factory menu nonlinear parameter table, guarantees the picture blank screen, is the brightness minimum state;
H. debug for the contrast under the non-TV passage, with 16 GTG signals is signal standards, all analog quantity parameter options are set to standard in the custom menu, the contrast option is set to maximum in the custom menu, analog quantity debugging ratio is the value of 100 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, make the 15th, the 16 rank amplitude limit just of 16 GTG signals to be the contrast maximum rating, write down the brightness value on the 7th rank simultaneously; Contrast option in the custom menu is put 0, adjust that analog quantity debugging ratio is the value of 0 o'clock CONTRAST in factory's menu nonlinear parameter table, make the brightness value on the 16th rank just equal the brightness value on contrast the 7th rank when maximum, be the contrast minimum state; All analog quantity parameter options are set to standard in the custom menu, receive active signal, analog quantity debugging ratio is the value of 75 o'clock CONTRAST in the adjustment factory menu nonlinear parameter table, and fine setting analog quantity debugging ratio is the value of 50 o'clock BRIGHT, guarantee distinguishable, the burnt hair not of details in a play not acted out on stage, but told through dialogues details, bright field is burnt hair, amplitude limit not, and will guarantee that 16 GTG signals can all show, are contrast standard state.
2. digital television brightness as claimed in claim 1 and contrast adjustment method is characterized in that: described non-TV passage comprises: AV passage, S passage, YPBPR passage, HDMI passage and VGA passage.
3. digital television brightness as claimed in claim 1 or 2 and contrast adjustment method is characterized in that: further comprising the steps of before step a:
(1) carries out GAMMA curve and white balance debugging, guarantee the correctness of colour temperature;
(2) finishing ADC under YPBPR passage, VGA passage proofreaies and correct;
(3) close complete machine black level extension function.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106657843A (en) * | 2016-12-13 | 2017-05-10 | 四川长虹电器股份有限公司 | Quantitative debugging method for brightness of liquid crystal display television |
| WO2018090448A1 (en) * | 2016-11-17 | 2018-05-24 | 深圳Tcl新技术有限公司 | Method and device for adjusting image effect associated with picture quality of display |
| CN108933940A (en) * | 2018-07-27 | 2018-12-04 | 四川长虹电器股份有限公司 | Television set brightness and contrast automatic debugging system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1099810C (en) * | 1998-12-17 | 2003-01-22 | 海信集团公司 | Single-key method for debugging TV set or others in factory |
| CN100388348C (en) * | 2005-04-08 | 2008-05-14 | 浙江大学 | Automatic measurement and correction method and system for LCD GAMMA curve and color temperature |
| CN101483789B (en) * | 2008-12-22 | 2010-08-11 | 天津大学 | Test method for wide color domain HDTV digital television system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018090448A1 (en) * | 2016-11-17 | 2018-05-24 | 深圳Tcl新技术有限公司 | Method and device for adjusting image effect associated with picture quality of display |
| US10803831B2 (en) | 2016-11-17 | 2020-10-13 | Shenzhen Tcl New Technology Co., Ltd | Method and device for adjusting picture quality of displayer |
| CN106657843A (en) * | 2016-12-13 | 2017-05-10 | 四川长虹电器股份有限公司 | Quantitative debugging method for brightness of liquid crystal display television |
| CN108933940A (en) * | 2018-07-27 | 2018-12-04 | 四川长虹电器股份有限公司 | Television set brightness and contrast automatic debugging system and method |
| CN108933940B (en) * | 2018-07-27 | 2019-08-27 | 四川长虹电器股份有限公司 | Television set brightness and contrast automatic debugging system and method |
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