CN101466047A - System and method for automatically correcting digital optical processing projector color - Google Patents
System and method for automatically correcting digital optical processing projector color Download PDFInfo
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- CN101466047A CN101466047A CNA2007102033137A CN200710203313A CN101466047A CN 101466047 A CN101466047 A CN 101466047A CN A2007102033137 A CNA2007102033137 A CN A2007102033137A CN 200710203313 A CN200710203313 A CN 200710203313A CN 101466047 A CN101466047 A CN 101466047A
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Abstract
The invention relates to an automatic color correcting system of a digital light processing projector. The system comprises a bulb timer, a judging device and a CPU (central processing unit). The bulb timer is used for calculating the accumulated using time of a bulb of the digital light processing projector; the judging device is used for setting a correcting time period and a non-correcting time period, judging which time period the accumulated using time is in, and outputting a judging signal; and the CPU is used for storing the preset gamma setting and calling the corresponding gamma setting according to the judging signal to process an external input image signal to output a projected image. If the judging signal indicates that the accumulated using time is in the non-correcting time period, the preset gamma setting is directly called. If the judging signal indicates that the accumulated using time is in the correcting time period, the gamma setting corresponding to the correcting time period is obtained by correcting the preset gamma setting according to the judging signal, and the gamma setting corresponding to the correcting time period is called. The invention further relates to an automatic color correcting method of the digital light processing projector.
Description
Technical field
The present invention relates to a kind of color Automatic Calibration Technique, relate in particular to a kind of color automatic correction system and method for digital light processing projector.
Background technology
At present, digital light is handled in (DLP, Digital Lighting Processing) projector's volume production process, for the setting of color, is determined by gamma curve.Complicated adjustment process in the production process; usually can at the beginning of design, carry out the gamma curve setting by the benchmark with the engineering sample; same model adopts identical gamma curve to set during volume production; and just can not change in case determine the back; the volume production board that so can guarantee same model has the color representation identical with the engineering sample machine, can reach the color representation of design expectation.
Yet along with the increase of service time, optical element and bulb in the digital light processing projector all can be decayed gradually, and bulb decay its brightness of back and colourity change greatly, and the variable quantity of red, green, blue three primary colors is not that same-size ratio changes.Compare with the optical characteristics of the preceding digital light processing projector that dispatches from the factory, use the optical characteristics of digital light processing projector after a period of time to change greatly, but because of gamma curve does not change along with change of optical property equivalent, the color representation of digital light processing projector will inevitably variation, thereby influences drop shadow effect.
Summary of the invention
In view of this, be necessary to provide a kind of automatically correcting digital optical processing projector color system and method in digital light processing projector its color representation of energy Automatic Optimal after use a period of time.
A kind of automatically correcting digital optical processing projector color system, it comprises a bulb timer, a judgment means, and a central processing unit.Described bulb timer is in order to calculate the accumulative total service time of described digital light processing projector bulb.Described judgment means in order to set one correction time section and one non-correction time section, judge the described accumulative total residing time period of service time and export one and judge signal.Described central processing unit is set in order to store default gamma, and calls corresponding gamma according to described judgement signal and set the picture signal handled from external world's input with the output projected image.If the described accumulative total of described judgement signal indication is in described non-correction time of section service time, described central processing unit then directly calls default gamma and sets the picture signal of handling from external world's input.If the described accumulative total of described judgement signal indication is in described correction time of section service time, described central processing unit is then set to proofread and correct to described default gamma according to described judgement signal and is obtained and the corresponding gamma of described correction time of section is set, and described central processing unit calls described the setting with the corresponding gamma of section correction time and handles the picture signal of importing from the external world.
A kind of automatically correcting digital optical processing projector color method, it may further comprise the steps: the accumulative total service time of calculating described digital light processing projector bulb; Set one correction time section and one non-correction time section, judge the described accumulative total residing time period of service time and export one and judge signal; Call corresponding gamma according to described judgement signal and set the picture signal handled from external world input with the output projected image, if the described accumulative total of described judgement signal indication is in described non-correction time of section service time, then directly call default gamma and set the picture signal of handling from external world's input, if the described accumulative total of described judgement signal indication is in described correction time of section service time, then described default gamma is set to proofread and correct and obtain and the corresponding gamma of described correction time of section is set, call described the setting and handle the picture signal of importing from the external world with the corresponding gamma of section correction time according to described judgement signal.
Compared with prior art, the color automatic correction system of described digital light processing projector and method by judging described digital light processing projector bulb the accumulative total residing time period of service time and export one and judge signal, call corresponding gamma according to described judgement signal and set the picture signal handled from external world input with the output projected image, thereby remedy the inequality decay that the decay of digital light processing projector bulb after use a period of time brings gamma to set, to realize the function of described digital light processing projector its color representation of energy Automatic Optimal after use a period of time.
Description of drawings
Fig. 1 is automatically correcting digital optical processing projector color system module figure of the present invention;
Fig. 2 is an automatically correcting digital optical processing projector color flow chart of steps of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See also Fig. 1, be automatically correcting digital optical processing projector color of the present invention system 100, it is used for digital optical processing projector color is carried out from dynamic(al) correction.Described automatically correcting digital optical processing projector color system 100 comprises 10, one judgment means 20 of a bulb timer and a central processing unit 30.
Described bulb timer 10 is in order to calculate the accumulative total service time of described digital light processing projector bulb, promptly use described digital light processing projector from dispatching from the factory at every turn after, described bulb adds up time of using.After more changing the bulb, need reset described bulb timer 10, make bulb timer 10 reset and correctly show accumulative total service time of bulb.
Described judgment means 20 comprises a setup unit 22.Described setup unit 22 in order to set one correction time section and one non-correction time section, in the present embodiment, described correction time, section comprised a very first time section successively according to the time order and function order, one second time period, and one the 3rd time period.Wherein, described accumulative total service time is smaller or equal to section 400 hours corresponding described non-correction time, be corresponding described very first time section 400 hours to 1100 hours (comprising 1100 hours) described totally service time, be corresponding described second time period of 1100 hours to 1700 hours (comprising 1700 hours) described totally service time, and described totally service time was greater than 1700 hours then corresponding described the 3rd time periods.Described judgment means 20 is judged the described accumulative total residing time period of service time and is exported one and judge signal.
Described central processing unit 30 comprises a memory cell 32 and a correcting unit 34.Described memory cell 32 in order to storage with described non-correction time the section corresponding preset gamma set.Described correcting unit 34 in order to according to described judgement signal to described default gamma set proofread and correct obtain first gamma corresponding with described very first time section set, with described second time period corresponding second gamma set, with corresponding the 3rd gamma setting of described the 3rd time period.Described central processing unit 30 calls corresponding gamma according to described judgement signal and sets the picture signal handled from external world input with the output projected image.Particularly: if the described accumulative total of described judgement signal indication is in described non-correction time of section service time, 30 of described central processing units directly call default gamma and set the picture signal of handling from external world's input.If the described very first time section that totally is in service time of described judgement signal indication, 30 of described central processing units are set to proofread and correct to described default gamma according to described judgement signal and are obtained described first gamma and set, and call described first gamma and set the picture signal of handling from external world's input.If described judgement signal is indicated described second time period that totally was in service time, 30 of described central processing units are set to proofread and correct to described default gamma according to described judgement signal and are obtained described second gamma and set, and call described second gamma and set the picture signal of handling from external world's input.If described judgement signal is indicated described the 3rd time period that totally was in service time, 30 of described central processing units are set to proofread and correct to described default gamma according to described judgement signal and are obtained described the 3rd gamma and set, and call described the 3rd gamma and set the picture signal of handling from external world's input.
Seeing also Fig. 2, is automatically correcting digital optical processing projector color flow chart of steps of the present invention.
Step S100, the accumulative total service time of calculating described digital light processing projector bulb.
Step S102, set one correction time section and one non-correction time section, and judge the described accumulative total residing time period of service time and export one and judge signal.Wherein, described non-correction time, section comprised a very first time section successively according to the time order and function order, one second time period, and one the 3rd time period.Described accumulative total service time is smaller or equal to section 400 hours corresponding described non-correction time, be corresponding described very first time section 400 hours to 1100 hours (comprising 1100 hours) described totally service time, be corresponding described second time period of 1100 hours to 1700 hours (comprising 1700 hours) described totally service time, and described totally service time was greater than 1700 hours then corresponding described the 3rd time periods.The corresponding default gamma of described non-section correction time is set, and corresponding one first gamma of described very first time section is set, and described second time period, corresponding one second gamma was set, and described the 3rd time period, corresponding one the 3rd gamma was set.
Step S104 if the described accumulative total of described judgement signal indication is in described non-correction time of section service time, directly calls described default gamma and sets the picture signal of handling from external world's input.
Step S106, if the described accumulative total of described judgement signal indication is in described correction time of section service time, then described default gamma is set to proofread and correct and obtain and the corresponding gamma of described correction time of section is set, and call described the setting and handle the picture signal of importing from the external world with the corresponding gamma of section correction time according to described judgement signal.Be specially: if described judgement signal is indicated the described described very first time section that totally is in service time, then described default gamma setting is proofreaied and correct and obtain described first gamma setting, and call described first gamma and set the picture signal of handling from external world's input according to described judgement signal.If described judgement signal is indicated described described second time period that totally is in service time, then described default gamma setting is proofreaied and correct and obtain described second gamma setting, and call described second gamma and set the picture signal of handling from external world's input according to described judgement signal.If described judgement signal is indicated described described the 3rd time period that totally is in service time, then described default gamma setting is proofreaied and correct and obtain described the 3rd gamma setting, and call described the 3rd gamma and set the picture signal of handling from external world's input according to described judgement signal.
Wherein, among the step S106 described default gamma set and proofread and correct, the corresponding attenuation ratio of gain reduction that is the red primary gamma curve under the gamma that described default gamma is set red primary gamma curve absolute presupposition is down set is to obtain and the corresponding gamma setting of described section correction time.Be specially: if the described accumulative total of described judgement signal indication is in the described very first time section service time, one first attenuation ratio 5% ~ 20% of gain reduction of the red primary gamma curve under the described relatively default gamma of red primary gamma curve under then described default gamma being set is set is set to obtain described first gamma.If the described accumulative total of described judgement signal indication was in for second time period service time, one second attenuation ratio 5% ~ 20% of gain reduction of the red primary gamma curve under the described relatively default gamma of red primary gamma curve under then described default gamma being set is set is set to obtain described second gamma.If the described accumulative total of described judgement signal indication was in for the 3rd time period service time, one the 3rd attenuation ratio 5% ~ 20% of gain reduction of the red primary gamma curve under the described relatively default gamma of red primary gamma curve under then described default gamma being set is set is set to obtain described the 3rd gamma.Preferably, in the present embodiment, described first attenuation ratio is that 15%, the second attenuation ratio is that 10%, the three attenuation ratio is 15%.
The color automatic correction system of digital light processing projector of the present invention and method by judging described digital light processing projector bulb the accumulative total residing time period of service time and export one and judge signal, call corresponding gamma according to described judgement signal and set the picture signal handled from external world input with the output projected image, thereby remedy the inequality decay that the decay of digital light processing projector bulb after use a period of time brings gamma to set, to realize the function of described digital light processing projector its color representation of energy Automatic Optimal after use a period of time.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection range that all should belong to claim of the present invention with distortion.
Claims (10)
- [claim 1] a kind of automatically correcting digital optical processing projector color system, it comprises a bulb timer, it is characterized in that in order to calculate the accumulative total service time of described digital light processing projector bulb, and described automatically correcting digital optical processing projector color system also comprises:A judgment means, its in order to set one correction time section and one non-correction time section, judge the described accumulative total residing time period of service time and export one and judge signal;A central processing unit, it is set in order to store default gamma, and call corresponding gamma according to described judgement signal and set the picture signal handled from external world input with the output projected image, if the described accumulative total of described judgement signal indication is in described non-correction time of section service time, described central processing unit then directly calls default gamma and sets the picture signal of handling from external world's input, if the described accumulative total of described judgement signal indication is in described correction time of section service time, described central processing unit is then set to proofread and correct to described default gamma according to described judgement signal and is obtained and the corresponding gamma of described correction time of section is set, and described central processing unit calls described the setting with the corresponding gamma of section correction time and handles the picture signal of importing from the external world.
- [claim 2] automatically correcting digital optical processing projector color as claimed in claim 1 system is characterized in that described judgment means comprises a setup unit, its in order to set one correction time section and one non-correction time section.
- [claim 3] automatically correcting digital optical processing projector color as claimed in claim 1 system, it is characterized in that, described central processing unit comprises a memory cell and a correcting unit, described memory cell is set in order to store default gamma, and described correcting unit obtains and the corresponding gamma setting of described section correction time in order to according to described judgement signal described default gamma is set to proofread and correct.
- [claim 4] automatically correcting digital optical processing projector color as claimed in claim 3 system, it is characterized in that, described non-section correction time is set by corresponding default gamma, described correction time, section comprised a very first time section successively according to the time order and function order, one second time period, and one the 3rd time period, described very first time section correspondence is set by first gamma after described correcting unit is proofreaied and correct, second gamma of the described second time period correspondence after described correcting unit is proofreaied and correct set, and described the 3rd time period correspondence is set by the 3rd gamma after described correcting unit is proofreaied and correct.
- [claim 5] a kind of automatically correcting digital optical processing projector color method, it may further comprise the steps:Calculate the accumulative total service time of described digital light processing projector bulb;Set one correction time section and one non-correction time section, judge the described accumulative total residing time period of service time and export one and judge signal;Call corresponding gamma according to described judgement signal and set the picture signal handled from external world input with the output projected image, if the described accumulative total of described judgement signal indication is in described non-correction time of section service time, directly call default gamma and set the picture signal of handling from external world's input, if the described accumulative total of described judgement signal indication is in described correction time of section service time, then described default gamma is set to proofread and correct and obtain and the corresponding gamma of described correction time of section is set, call described the setting and handle the picture signal of importing from the external world with the corresponding gamma of section correction time according to described judgement signal.
- [claim 6] automatically correcting digital optical processing projector color method as claimed in claim 5, it is characterized in that, described non-section correction time is set by corresponding default gamma, described correction time, section comprised a very first time section successively according to the time order and function order, one second time period, and one the 3rd time period, first gamma after the corresponding correction of described very first time section is set, second gamma after corresponding correction of described second time period is set, and the 3rd gamma after corresponding correction of described the 3rd time period is set.
- [claim 7] automatically correcting digital optical processing projector color method as claimed in claim 6, it is characterized in that, if the described accumulative total of described judgement signal indication is in described correction time of section service time, then described invocation step comprises: if described judgement signal is indicated the described described very first time section that totally is in service time, then described default gamma is set to proofread and correct and obtain described first gamma setting according to described judgement signal, call described first gamma and set the picture signal of handling from external world's input, if described judgement signal is indicated described described second time period that totally is in service time, then described default gamma is set to proofread and correct and obtain described second gamma setting according to described judgement signal, call described second gamma and set the picture signal of handling from external world's input, if described judgement signal is indicated described described the 3rd time period that totally is in service time, then described default gamma setting is proofreaied and correct and obtain described the 3rd gamma setting, call described the 3rd gamma and set the picture signal of handling from external world's input according to described judgement signal.
- [claim 8] automatically correcting digital optical processing projector color method as claimed in claim 6, it is characterized in that, if the described accumulative total of described judgement signal indication is in described correction time of section service time, then described default gamma is set that to proofread and correct be that the corresponding attenuation ratio of gain reduction of the red primary gamma curve under the gamma that described default gamma is set red primary gamma curve absolute presupposition is down set is to obtain and the corresponding gamma setting of described section correction time.
- [claim 9] automatically correcting digital optical processing projector color method as claimed in claim 8, it is characterized in that, if the described accumulative total of described judgement signal indication is in described correction time of section service time, described default gamma set to proofread and correct may further comprise the steps: if the described accumulative total of described judgement signal indication is in the very first time section service time, one first attenuation ratio of gain reduction of red primary gamma curve under the gamma of the red primary gamma curve absolute presupposition under then described default gamma being set is set is set to obtain described first gamma, if described judgement signal is indicated described second time period that totally was in service time, one second attenuation ratio of gain reduction of red primary gamma curve under the gamma of the red primary gamma curve absolute presupposition under then described default gamma being set is set is set to obtain described second gamma, if the described accumulative total of described judgement signal indication was in for the 3rd time period service time, one the 3rd attenuation ratio of gain reduction of the red primary gamma curve under the gamma of the red primary gamma curve absolute presupposition under then described default gamma being set is set is set to obtain described the 3rd gamma.
- [claim 10] automatically correcting digital optical processing projector color method as claimed in claim 9 is characterized in that described first attenuation ratio is 5% ~ 20%, and described second attenuation ratio is 5% ~ 20%, and described the 3rd attenuation ratio is 5% ~ 20%.
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| CN2007102033137A CN101466047B (en) | 2007-12-21 | 2007-12-21 | System and method for automatically correcting digital optical processing projector color |
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| CN2007102033137A CN101466047B (en) | 2007-12-21 | 2007-12-21 | System and method for automatically correcting digital optical processing projector color |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531070A (en) * | 2016-12-29 | 2017-03-22 | 上海天马有机发光显示技术有限公司 | Control chip, control method, OLED display device and control host machine |
| WO2018107650A1 (en) * | 2016-12-15 | 2018-06-21 | 惠科股份有限公司 | Method for correcting and adjusting gamma curve, and display device |
| CN113261046A (en) * | 2019-03-07 | 2021-08-13 | 深圳市柔宇科技股份有限公司 | Display control method, display device and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323557C (en) * | 2002-12-27 | 2007-06-27 | 明基电通股份有限公司 | Method and device for regulating colour |
| CN100463532C (en) * | 2004-11-01 | 2009-02-18 | 晨星半导体股份有限公司 | Automatic color adjusting process and apparatus |
| CN100515093C (en) * | 2005-06-10 | 2009-07-15 | 中华映管股份有限公司 | Image color adjusting method |
| CN100525469C (en) * | 2006-05-10 | 2009-08-05 | 广达电脑股份有限公司 | Image processing device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107650A1 (en) * | 2016-12-15 | 2018-06-21 | 惠科股份有限公司 | Method for correcting and adjusting gamma curve, and display device |
| CN106531070A (en) * | 2016-12-29 | 2017-03-22 | 上海天马有机发光显示技术有限公司 | Control chip, control method, OLED display device and control host machine |
| CN106531070B (en) * | 2016-12-29 | 2019-04-09 | 上海天马有机发光显示技术有限公司 | A kind of control chip, control method, OLED display and control host |
| CN113261046A (en) * | 2019-03-07 | 2021-08-13 | 深圳市柔宇科技股份有限公司 | Display control method, display device and electronic device |
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