CN1482592A - Automatic regulating system for display - Google Patents
Automatic regulating system for display Download PDFInfo
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- CN1482592A CN1482592A CNA031218407A CN03121840A CN1482592A CN 1482592 A CN1482592 A CN 1482592A CN A031218407 A CNA031218407 A CN A031218407A CN 03121840 A CN03121840 A CN 03121840A CN 1482592 A CN1482592 A CN 1482592A
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Abstract
The invention relates to a display automatic regulating system comprising a display unit for image displaying, an image acquisition and analysis unit for collecting and analyzing the image, and exporting an analysis signal, a pattern generating unit for producing a pattern signal, and a control unit for adjusting display effect of the display unit, and forming a close loop control. By means of the micro controller unit inside the display unit or the close loop control formed by the outer computer, the display characteristic for the display units can be regulated automatically and completely during the development and production stage.
Description
Technical field
The present invention relates to a kind of display automatic adjustment system, relate in particular to a kind of display automatic adjustment system that can carry out automatically the display characteristic of display and intactly adjust.
Background technology
At present, in the production run of display, how allowing display demonstrate correct brightness and color, is an important program.Reason owing to the display characteristic of display, the image that the signal of video signal of input display shows via display, its brightness and color and the image originally that can't truly reduce, reason is to belong to nonlinear transport between the input and output of display, therefore display all need be through the suitable adjustment of display characteristic before dispatching from the factory, the signal of video signal of can actual response being imported with the image output of guaranteeing display.
In the common technology, the I/O of display relation is similar to a power function:
Light output=input voltage
γBe known gamma curve (Gamma Curve).γ (Gamma)=1 is the desirable I/O relation of display, the linearity curve shown in Figure 1A.But display mostly is nonlinear transport at present, is example with the cathode ray tube (CRT) display, and its I/O relation is often approximate with γ=2.2, and relation curve is shown in Figure 1B.In order to obtain desirable I/O relation as Figure 1A, must compensate work at CRT monitor, gamma correction (Gamma Correction) just, by the γ shown in Fig. 1 C=0.45 curve, the I/O relation of CRT monitor linearity can be compensated for as, the linearization purpose can be reached like this.
But be not that all displays all can use simple power function to represent actual gamma curve.Fig. 1 D is depicted as the gamma curve of typical LCD panel (LCD Panel), its I/O relation is not the power function, required compensated curve is the dotted line among Fig. 1 E, therefore be used for carrying out the gamma correction mode of CRT monitor and can't being suitable for, and must its gamma curve of actual measurement revise again, can guarantee the signal of video signal that the image output of display can actual response be imported.
Yet, present known display display characteristic is adjusted operation and is not reached ideal state, can't carry out complete adjustment at the colour temperature (Color Temperature) and the white balance display characteristics such as (White Balance) of display, when its main cause is to carry out the gamma correction of display, do not have the actual complete gamma curve correction of finishing shown in Fig. 1 C and Fig. 1 E, but shown in Fig. 1 F and Fig. 1 G, 1 to 2 sampling spot compensates in the gamma curve of only taking a sample, and is difficult to obtain desirable display effect really.Therefore, the signal of video signal for the image output of guaranteeing display can actual response be imported still has sizable space of improving in the common technology.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of display automatic adjustment system that makes display can reach automatically and intactly adjust display characteristic in exploitation and production phase is provided.
For achieving the above object, the present invention proposes a kind of display automatic adjustment system, and it comprises:
One display is in order to show image;
One image capture analytic unit in order to acquisition and analysis image, and is exported an analytic signal;
One image generation unit is in order to produce image (Pattem) signal; And
One control module to adjust the display effect of this display, forms closed loop control (Close Loop Control) according to analytic signal and picture signal.
Wherein said image capture analytic unit comprises an image sensor, in order to pick-up image, and exports a signal of video signal.
Wherein said image capture analytic unit comprises a color analyzer (Color Analyzer), in order to receiving signal of video signal carrying out brightness and colourity adjustment, and the output analytic signal.
Wherein said control module is a computing machine.
Wherein said display is by receiving picture signal to produce image.
Wherein said picture signal is simulating signal or digital signal.
Wherein said display comprises an input gamma correction (Gamma Correction) unit, a color space conversion (Color Space Conversion) unit, a gain control (Gain Control) unit and an output gamma correction unit, with the usefulness of display effect adjustment that this display is provided.
The display effect adjustment of wherein said display comprises colour temperature (Color Temperature), white balance (White Balance) and gamma correction (Gamma Correction).
Wherein said control module is adjusted input gamma amending unit, color space transformation unit, gain control unit and the output gamma correction unit of described display according to analytic signal and picture signal.
Wherein said control module is the micro-control unit that display has; Described image capture analytic unit is exported an analytic signal to above-mentioned micro-control unit.
Wherein said display comprises an input gamma correction (Gamma Correction) unit, a color space conversion (Color Space Conversion) unit, a gain control (Gain Control) unit and an output gamma correction unit, with the usefulness of display effect adjustment that this display is provided.
Wherein said micro-control unit is adjusted input gamma amending unit, color space transformation unit, gain control unit and the output gamma correction unit of described display according to analytic signal and picture signal.
Wherein said image generation unit can be display.
In the closed loop control that the present invention forms, control module is according to analytic signal and picture signal, adjust input gamma amending unit, color space transformation unit, gain control unit and the output gamma correction unit of display, can adjust its display characteristic automatically and intactly in exploitation and production phase to display, up to the display effect that reaches expectation.
Description of drawings
Figure 1A, Figure 1B, Fig. 1 C are the gamma correction synoptic diagram of known cathode ray tube (CRT) display;
Fig. 1 D, Fig. 1 E are the gamma correction synoptic diagram of known LCD panel (LCD Panel);
Fig. 1 F, Fig. 1 G are the display gamma correction synoptic diagram that carries out with sampling mode commonly used;
Fig. 2 A is the structural representation of preferred embodiment of the present invention;
Fig. 2 B is the structural representation of another preferred embodiment of the present invention;
Fig. 3 A, Fig. 3 B are schematic diagram of the present invention.
The figure number explanation
21: computing machine 22: image generation unit
23: image capture analytic unit 231: image sensor
232: color analyzer 24: LCD
31: LCD 311: micro-control unit (MCU)
312: input gamma correction (Gamma Correction) unit
313: color space transformation (Color Space Conversion) unit
314: gain control (Gain Control) unit
315: output gamma correction unit
Embodiment
See also Fig. 2 A, Fig. 2 B, be preferred embodiment of the present invention.Shown in Fig. 2 A, be a closed loop control system, wherein image generation unit 22 produces and adjusts the picture signal that display characteristics are used, and is sent to LCD 24 respectively showing the image of this picture signal, and computing machine 21; Computing machine 21 is obtained color analyzer 232 and is analyzed the analytic signal of being exported behind 231 picked image signals of image sensor also by image capture analytic unit 23.Computing machine 21 can carry out the comparison work of picture signal and analytic signal via program design, and then output is adjusted signal to adjust the display effect of LCD 24 automatically.Fig. 2 B is depicted as another preferred embodiment of the present invention, directly utilizes the micro-control unit (MCU) of LCD 24 inside to replace the work of computing machine 21, to reach identical automatic adjustment function.
Fig. 3 A, Fig. 3 B are the further elaboration of display automatic adjustment system structure of the present invention, adjust operation in order to the display characteristic that explains orally display.As shown in Figure 3A, the display characteristic of LCD 31 is that input gamma correction (Gamma Correction) unit 312, color space transformation (ColorSpace Conversion) unit 313, gain control (Gain Control) unit 314 by inside adjusted with output gamma correction 315; As for how to adjust, it then is the picture signal of utilizing computing machine 21 comparison image generation units 22 to produce, and behind the analytic signal of image capture analytic unit 23 outputs, the micro-control unit 311 of signal controlling LCD 31 is adjusted in output, so as to adjusting input gamma amending unit 312 respectively, color space transformation unit 313, gain control unit 314 and the parameter of output gamma correction 315 at YUV color space and rgb color space, reach the automatic adjustment of colour temperature (Color Temperature) and white balance (WhiteBalance), and the correction of every bit gamma value on the RGB gamma curve.Fig. 3 B is depicted as the work that the micro-control unit 311 that utilizes LCD 24 inside replaces computing machine 21, therefore micro-control unit 311 is receiving the picture signal that image generation unit 22 produces, and compare behind the analytic signal of image capture analytic unit 23 outputs, can directly adjust input gamma amending unit 312, color space transformation unit 313, gain control unit 314 and the parameter of output gamma correction 315, and reach the display effect of adjusting LCD 31 at YUV color space and rgb color space.
The present invention is on application, except the automatic adjustment of LCD, more can use at organic electro-luminescent display (OLED, Organic Light-Emitting Diode) flat-panel screens (FPD) such as, perhaps the cathode ray tube (CRT) display is before dispatching from the factory, automatically adjust colour temperature and white balance, and the complete gamma correction operation of carrying out whole gamma curve automatically.In addition, with regard to technological layer, if the display of adjusting has the digitized video input terminal, the picture signal that then is sent to display also is digital signal, this moment, digital picture signal also can be produced voluntarily by display, and needn't set up image generation unit in addition.
The present invention be directed to common technology and propose to improve, carry out the test of display characteristic, more can pass through the display interior micro-control unit, or form closed loop control via outer computer except utilizing color analyzer and pattern generator; And progressive of the present invention is, pass through computer programming, can reach display in exploitation and production run, automatically adjust display color temperature and white balance, and after the gamma curve of perfect measurement display, can utilize converse routine to convert required gamma value to and revise, reach the purpose of automatic adjustment display display effect.
Claims (13)
1, a kind of display automatic adjustment system, it is characterized in that: this system comprises:
One display is in order to show image;
One image capture analytic unit in order to acquisition and analysis image, and is exported an analytic signal;
One image generation unit is in order to produce a picture signal; And
One control module, be according to this analytic signal and picture signal to adjust the display effect of described display, form closed loop control.
2, display automatic adjustment system as claimed in claim 1 is characterized in that: described image capture analytic unit comprises an image sensor, in order to pick-up image, and exports a signal of video signal.
3, display automatic adjustment system as claimed in claim 1 is characterized in that: described image capture analytic unit also comprises a color analyzer, in order to receiving signal of video signal carrying out brightness and colourity adjustment, and the output analytic signal.
4, display automatic adjustment system as claimed in claim 1 is characterized in that: described control module is a computing machine.
5, display automatic adjustment system as claimed in claim 1 is characterized in that: described display is by receiving picture signal to produce image.
6, display automatic adjustment system as claimed in claim 1 is characterized in that: described picture signal is simulating signal or digital signal.
7, display automatic adjustment system as claimed in claim 1, it is characterized in that: described display comprises an input gamma amending unit, a color space conversion unit, a gain control unit and an output gamma correction unit, with the usefulness of display effect adjustment that this display is provided.
8, display automatic adjustment system as claimed in claim 7 is characterized in that: the display effect adjustment of described display comprises colour temperature, white balance and gamma correction.
9, display automatic adjustment system as claimed in claim 7, it is characterized in that: described control module is adjusted input gamma amending unit, color space transformation unit, gain control unit and the output gamma correction unit of described display according to analytic signal and picture signal.
10, display automatic adjustment system as claimed in claim 1 is characterized in that: described control module is the micro-control unit that display has; Described image capture analytic unit is exported an analytic signal to above-mentioned micro-control unit.
11, display automatic adjustment system as claimed in claim 10, it is characterized in that: described display comprises an input gamma amending unit, a color space conversion unit, a gain control unit and an output gamma correction unit, with the usefulness of display effect adjustment that this display is provided.
12, display automatic adjustment system as claimed in claim 10, it is characterized in that: described micro-control unit is adjusted input gamma amending unit, color space transformation unit, gain control unit and the output gamma correction unit of described display according to analytic signal and picture signal.
13, as claim 1 or 10 described display automatic adjustment systems, it is characterized in that: described image generation unit can be display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031218407A CN1482592A (en) | 2003-04-21 | 2003-04-21 | Automatic regulating system for display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031218407A CN1482592A (en) | 2003-04-21 | 2003-04-21 | Automatic regulating system for display |
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| CN1482592A true CN1482592A (en) | 2004-03-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103827955A (en) * | 2011-09-15 | 2014-05-28 | Eizo株式会社 | Measurement method, computer program, and measurement system |
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2003
- 2003-04-21 CN CNA031218407A patent/CN1482592A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103827955A (en) * | 2011-09-15 | 2014-05-28 | Eizo株式会社 | Measurement method, computer program, and measurement system |
| CN103827955B (en) * | 2011-09-15 | 2016-04-06 | Eizo株式会社 | Assay method and Analytical system |
| US10311828B2 (en) | 2011-09-15 | 2019-06-04 | Eizo Corporation | Method, computer program, and system for measuring display light intensity of a display device |
| US10607566B2 (en) | 2011-09-15 | 2020-03-31 | Eizo Corporation | Method, computer program, and system for measuring display light intensity of a display device |
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