CN1353548A - Intelligent autoamtic brightness contrast and colour compensation system - Google Patents
Intelligent autoamtic brightness contrast and colour compensation system Download PDFInfo
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- CN1353548A CN1353548A CN 00133979 CN00133979A CN1353548A CN 1353548 A CN1353548 A CN 1353548A CN 00133979 CN00133979 CN 00133979 CN 00133979 A CN00133979 A CN 00133979A CN 1353548 A CN1353548 A CN 1353548A
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Abstract
An intelligent automatic brightness contrast and colour compensating system for a projection display is composed of video signal decoder for decomposing the received video signal into three red, blue and green components, optical detector for detecting ambient brightness and outputting a reference signal, and compensator for receiving the said reference signal and red, blue and green components to choose one of the bright and the dark visual curves stored in it and outputting the compensated red, blue and green components to display.
Description
The present invention relates to a kind of device for image, particularly a kind of image brilliance Adjustment System can be automatically according to ambient brightness and vision response, the colour brightness of revisal image.
Display is common device in daily life.Particularly TV of Shi Yonging or computer must have a display, and image energy is shown on the phosphor screen of display, present to the user.Image also can project a phosphor screen with image through the display unit of projection-type in addition.
No matter yet which kind of display unit, the image of its demonstration all must just can be learnt presentation content by user's the organs of vision.Wherein ambient brightness can influence visual effect.Particularly, human eye under different brightness, has different reactions to the frequency of different colours.The color of light all can resolve into three components of red, green, blue, and therefore the revisal to light color can come revisal at three components of red, green, blue respectively.Fig. 4 illustrates by international lighting tissue (COMMISSION INTERNATIONALE DEL ' ECLAIRAGE, CIE) stipulate, vision is in the extent of reaction of different colours, the vision response curve when wherein solid line is dark situation, and the vision response curve of dotted line when being the bright ring border.Transverse axis is an optical wavelength, and the longitudinal axis is a relative scale.Red light wavelength is about 700 millimicrons (nm), and green wavelength is about 550 millimicrons, and blue light wavelength is about 480 millimicrons, and the degree of its vision response is very different.Particularly also different under the environment of light and shade.
Carry as preceding institute, display has different brightness contrast demands and color saturation level and changes under different ambient lightings.Conventional method all needs artificial software and electronic loop to be adjusted.Fig. 1 illustrates the system of a tradition control LCD brightness.In Fig. 1, an intednsity circuit 100 is arranged.One LCD 110 is connected intednsity circuit 100.An other photo-detector 108 and a control knob 106 are connected intednsity circuit 100.Intednsity circuit 100 is also via bus interface one CPU 102 and other peripheral devices 104.The brightness of LCD 110 intednsity circuit 100 controls thus, wherein photo-detector 108 testing environment brightness, a brightness of decision LCD 110.The user likes according to it, can be by control knob 106, and the brightness of further adjusting LCD 110 is to the degree of wanting.In this known technology, the brightness of LCD 110 is to adjust together, does not do in various degree adjustment with different colours.In addition, the brightness that it is last still needs manually to be adjusted through control knob 106 by the user.Its major defect is the adjustment that can't solve color and light and shade curve.
In the known technology, also having a kind of in addition is to come revisal according to three components of red, green, blue.Fig. 2 illustrates the color colour temperature control device of another known color TV iconoscope.In Fig. 2, a color decoder 112 is arranged, a vision signal is resolved into three components of red, green, blue and imports a non-linear red signal amplifying circuit 114a respectively, a non-linear green signal amplification circuit 114b, and a non-linear blue signal amplification circuit 114c.Because of the colour temperature of cathode ray tube 118 can influence the intensity of color, hot, green two light input signals are greater than a predetermined value, and when approaching white light, its signal magnification ratio can be made one and adjust reduction changing colour temperature, but blue light remains unchanged.Then three signals of red, green, blue enter a video signal output circuit 116 and then are input to a cathode ray tube 118.In this known technology, utilize three Essential colour of RGB to adjust the colour temperature of cathode ray tube 118.Its method only limits to the adjustment of cathode ray tube 118.And can't do effective adjustment because of the extent of reaction of different colours.
In view of this, the invention provides a kind of intelligent auto brightness contrast color correcting system, can be according to the brightness of environment of living in, and at the vision response degree of three Essential colour of RGB, the brightness of revisal RGB automatically needn't be via user's adjustment.
A kind of intelligent auto brightness provided by the invention comprises a video signal decoder to color correcting system when, in order to receiving a vision signal, and is broken down into red, blue, green three components.One photo-detector in order to the brightness of testing environment, and is exported a reference signal.One correcting circuit, receive this reference signal, and receive in red, blue, green three these correcting circuits of component, store eye sensitivity curve when dark, and eye sensitivity curve when bright, so can according to the reference signal decision that receives take eye sensitivity curve when dark and the eye sensitivity curve when bright the two one of, according to the characteristic of the eye sensitivity curve of choosing, red, blue, green three components of revisal.Red after revisal, blue, green three components of correcting circuit output are given a display.
The invention described above is also applicable to a projection arrangement.
In the invention described above, its correcting circuit comprises a Control Software again, with these red bluish-green three components of revisal.
In the invention described above, vision response curve when it is dark and the vision response curve when bright are to stipulate according to the standard of international lighting tissue.
The present invention also provides a kind of image brilliance method of adjustment, and comprising provides a vision signal to contain red bluish-green three components.Detect an ambient brightness, produce a reference signal one the vision response curve of vision response curve and a when bright when dark is provided.According to this reference signal, decision take this vision response curve when dark and this vision response curve when bright the two one of, be a revisal vision response curve.Utilize this revisal vision response curve, these red bluish-green three components of this vision signal are done revisal respectively.One display unit is provided, and these red bluish-green three components with after the reception revisal show this vision signal.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. elaborate.
Fig. 1 illustrates the system of a tradition control LCD brightness;
Fig. 2 illustrates the color colour temperature control device of a traditional color TV iconoscope;
Fig. 3 illustrates according to of the present invention one intelligent auto brightness contrast color correcting system; And
Fig. 4 illustrates the vision response curve that adopts according to the present invention.
Principal character of the present invention comprises utilizes a photo-detector, to detect the luminosity of an environment.Again with detect ambient light, determine a vision response curve, utilizing this vision response curve, at the relative response degree of RGB, automatic video luminance signal on the revisal display.So the image on the display can maintain an optimum state automatically, is not subjected to user's artificial adjustment, brings inconvenience or deviation.
Fig. 3 illustrates according to of the present invention one intelligent auto brightness contrast color correcting system.In Fig. 3, a correcting circuit 200, one video signal decoders 204, one photo-detectors 202 are arranged, and a display 208.Photo-detector 202 is given correcting circuit 200 in order to the brightness of testing environment and export a reference signal.204 of video signal decoders are in order to receiving an image vision signal, and are broken down into three components of red, green, blue, again three components of RGB are exported to correcting circuit 200.Correcting circuit 200 can reach under this ambient brightness according to the indicated ambient brightness of reference signal, and the relative response degree that vision is checked colors is to the revisal respectively of blue three components of RGB.Three components of RGB after the revisal are output to display 208, wherein at the display front end, generally are connected with a corresponding color driver 206 again.
Above-mentioned correcting circuit 200, its more detailed operation is as follows, except the hardware that comprises a micro-processor interface circuit and memory, cooperates the execution of micro-processor interface circuit in the correcting circuit 200, also includes a software.Vision response curve (solid line) when storage is for example just like a dark situation of earlier figures 4 in the correcting circuit 200, and the vision response curve (dotted line) during the bright ring border receives reference signal by photo-detector 202 outputs when correcting circuit 200, can judge that the environment of this moment is to be in a bright ring border or a dark situation.A for example desirable reference signal of its determination methods and a predefined critical value (threshold) are relatively learnt.The vision response curve when vision response curve when so correcting circuit 200 is for example selected dark situation and bright ring border the two one of, as the vision response curve of revisal generally speaking, the vision response curve of revisal can be by ambient brightness, vision response curve three when vision response curve during dark situation and bright ring border obtains corresponding to the vision response curve of ambient brightness through the interpolation method.
So correcting circuit 200 utilizes the function of software and the vision response curve of revisal, carry out three components of revisal RGB, then export to display 208.Also comprise conversion of signals and some the signal controlling elements generally known in the correcting circuit 200, for example the conversion between digital signal and the analog signal is all known technology, does not describe in detail at this.
The present invention mainly utilizes a photo-detector 202, with the brightness of testing environment, again according to the brightness of environment, chooses a suitable colour vision response curve, again according to vision response curve to three basic colors, respectively revisal.Therefore the vision signal of display maintains best visual brightness automatically always, does not need user's artificial adjustment.Human eye also can be adjusted to optimum state to the extent of reaction of different colours in the present invention in the lump automatically.The people is that the color reaction deviation that causes also can be avoided effectively.The present invention has intelligent feature, has the function of automatic revisal brightness contrast and color.
Correcting system of the present invention not only applicable to general display, more applicable to the display of projection, utilizes correcting system with revisal projection light intensity.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention should be with being as the criterion that the claim scope is defined.
Claims (15)
1. an intelligent auto brightness comprises color correcting system when:
One video signal decoder in order to receiving a vision signal, and is broken down into red bluish-green three components;
One photo-detector in order to the brightness of testing environment, and is exported a reference signal according to the brightness of environment;
One correcting circuit, receive this reference signal of this photo-detector output, and receive this red bluish-green three components, wherein in this correcting circuit, store the vision response curve of reaction eye sensitivity curve and a when bright secretly the time, so can be according to this reference signal that receives, vision response curve when the vision response curve when this is dark and this are bright determines a revisal vision response curve, according to the characteristic of this revisal vision response curve, relative these red bluish-green three components of revisal, and can be with this aliquot output
2. intelligent auto brightness contrast color correcting system as claimed in claim 1 also comprises a display, receives these red bluish-green three components after this correcting circuit revisal, with show image.
3. intelligent auto brightness contrast color correcting system as claimed in claim 1, the vision response curve the when vision response curve when wherein this is dark and this are bright is to stipulate according to the standard of international lighting tissue.
4. intelligent auto brightness contrast color correcting system as claimed in claim 1, wherein this correcting circuit comprises a Control Software, with these red bluish-green three components of revisal.
5. intelligent auto brightness contrast color correcting system as claimed in claim 1, wherein this revisal vision response curve of this correcting circuit decision is this vision response curve when dark and this two one of vision response curve when bright.
6. projection arrangement brightness control system comprises:
One video signal decoder in order to receiving a vision signal, and is broken down into red bluish-green three components;
One photo-detector in order to the brightness of testing environment, and is exported a reference signal according to the brightness of environment;
One correcting circuit, receive this reference signal of this photo-detector output, and receive this red bluish-green three components, wherein in this correcting circuit, store the vision response curve of reaction eye sensitivity curve and a when bright secretly the time, so can be according to this reference signal that receives, vision response curve when the vision response curve when this is dark and this are bright determines a revisal vision response curve, according to the characteristic of this revisal vision response curve, these red bluish-green three components of revisal, and can be with this aliquot output.
7. a kind of projection arrangement brightness control system as claimed in claim 6, also comprise a projection arrangement, reception these red bluish-green three components after this correcting circuit revisal, and a revisal rear video signal that will these red bluish-green three components constitutes project a phosphor screen.
8. projection arrangement brightness control system as claimed in claim 6, the vision response curve the when vision response curve when wherein this is dark and this are bright is to stipulate according to the standard of international lighting tissue.
9. projection arrangement brightness control system as claimed in claim 6, wherein this correcting circuit comprises a Control Software, with these red bluish-green three components of revisal
10. projection arrangement brightness control system as claimed in claim 6, wherein this revisal vision response curve of this correcting circuit decision is this vision response curve when dark and this two one of vision response curve when bright.
11. an image brilliance method of adjustment comprises:
Provide a vision signal to contain red bluish-green three components;
Detect an ambient brightness, produce a reference signal;
One the vision response curve of vision response curve and a when bright when dark is provided;
According to this reference signal, the vision response curve the when vision response curve when this is dark and this are bright determines a revisal vision response curve;
Utilize this revisal vision response curve, these red bluish-green three components of this vision signal are done revisal respectively.
12. a kind of image brilliance method of adjustment as claimed in claim 11 further provides a display unit, these red bluish-green three components with after the reception revisal show this vision signal.
13. image brilliance method of adjustment as claimed in claim 11, the vision response curve the when vision response curve when wherein this is dark and this are bright is to stipulate according to the standard of international lighting tissue.
14. image brilliance method of adjustment as claimed in claim 11, wherein utilizing this revisal vision response curve, these red bluish-green three components to this vision signal are done respectively in this step of revisal, comprise using a control circuit and a Control Software to carry out the revisal that these red bluish-green three components divide.
15. image brilliance method of adjustment as claimed in claim 11, wherein this revisal vision response curve is selected from this vision response curve when dark and this two one of vision response curve when bright.
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| CN 00133979 CN1353548A (en) | 2000-11-13 | 2000-11-13 | Intelligent autoamtic brightness contrast and colour compensation system |
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| CN 00133979 CN1353548A (en) | 2000-11-13 | 2000-11-13 | Intelligent autoamtic brightness contrast and colour compensation system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323374C (en) * | 2002-04-26 | 2007-06-27 | 韩国电子通信研究院 | Method and system for transforming adaptively visual contents according to terminal user's color vision characteristics |
| US7317502B2 (en) | 2004-04-27 | 2008-01-08 | Au Optronics Corp. | Liquid crystal panel with improved chromaticity and brightness |
| CN100363788C (en) * | 2004-05-20 | 2008-01-23 | 友达光电股份有限公司 | Liquid crystal panel and liquid crystal display device |
| CN100433817C (en) * | 2002-07-23 | 2008-11-12 | Nec显示器解决方案株式会社 | Colour regulating method for progector |
| CN101620819A (en) * | 2009-06-25 | 2010-01-06 | 北京中星微电子有限公司 | Dynamic regulation method and dynamic regulation device for displaying image back light brightness, and moving display device |
| CN101312034B (en) * | 2007-05-25 | 2011-09-28 | 佛山市顺德区顺达电脑厂有限公司 | Dynamic regulation method for screen brightness |
| CN103680466A (en) * | 2012-09-24 | 2014-03-26 | 华为终端有限公司 | Color calibration method and user terminal |
| CN105096910A (en) * | 2015-07-09 | 2015-11-25 | 西安诺瓦电子科技有限公司 | Image processing method |
| CN105100761A (en) * | 2015-07-09 | 2015-11-25 | 西安电子科技大学 | Image display method |
| CN105592278A (en) * | 2014-10-21 | 2016-05-18 | 宏碁股份有限公司 | Electronic device and projection picture adjusting method |
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2000
- 2000-11-13 CN CN 00133979 patent/CN1353548A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323374C (en) * | 2002-04-26 | 2007-06-27 | 韩国电子通信研究院 | Method and system for transforming adaptively visual contents according to terminal user's color vision characteristics |
| CN100433817C (en) * | 2002-07-23 | 2008-11-12 | Nec显示器解决方案株式会社 | Colour regulating method for progector |
| US7317502B2 (en) | 2004-04-27 | 2008-01-08 | Au Optronics Corp. | Liquid crystal panel with improved chromaticity and brightness |
| US7499128B2 (en) | 2004-04-27 | 2009-03-03 | Au Optronics Corp. | Liquid crystal panel with improved chromaticity and brightness |
| CN100363788C (en) * | 2004-05-20 | 2008-01-23 | 友达光电股份有限公司 | Liquid crystal panel and liquid crystal display device |
| CN101312034B (en) * | 2007-05-25 | 2011-09-28 | 佛山市顺德区顺达电脑厂有限公司 | Dynamic regulation method for screen brightness |
| CN101620819A (en) * | 2009-06-25 | 2010-01-06 | 北京中星微电子有限公司 | Dynamic regulation method and dynamic regulation device for displaying image back light brightness, and moving display device |
| CN101620819B (en) * | 2009-06-25 | 2013-10-16 | 北京中星微电子有限公司 | Dynamic regulation method and dynamic regulation device for displaying image back light brightness, and moving display device |
| CN103680466A (en) * | 2012-09-24 | 2014-03-26 | 华为终端有限公司 | Color calibration method and user terminal |
| CN103680466B (en) * | 2012-09-24 | 2016-06-08 | 华为终端有限公司 | A kind of method and user terminal calibrating color |
| US9501841B2 (en) | 2012-09-24 | 2016-11-22 | Huawei Device Co., Ltd. | Method for color calibration and user terminal |
| CN105592278A (en) * | 2014-10-21 | 2016-05-18 | 宏碁股份有限公司 | Electronic device and projection picture adjusting method |
| CN105592278B (en) * | 2014-10-21 | 2018-11-02 | 宏碁股份有限公司 | Electronic device and projected picture method of adjustment |
| CN105096910A (en) * | 2015-07-09 | 2015-11-25 | 西安诺瓦电子科技有限公司 | Image processing method |
| CN105100761A (en) * | 2015-07-09 | 2015-11-25 | 西安电子科技大学 | Image display method |
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