CN1538758A - Method of correcting display device colour image and its device - Google Patents
Method of correcting display device colour image and its device Download PDFInfo
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- CN1538758A CN1538758A CNA031101755A CN03110175A CN1538758A CN 1538758 A CN1538758 A CN 1538758A CN A031101755 A CNA031101755 A CN A031101755A CN 03110175 A CN03110175 A CN 03110175A CN 1538758 A CN1538758 A CN 1538758A
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Abstract
The display device includes an input end, a decoder connected to the input end, a conversion circuit connected to the decoder, a Gamma gain circuitry connected to the conversion circuit and a display faceplate. The method includes such steps as decoding image signal input from the input end by using the decoder in order to generate YUV signal; converting YUV signal to RGB signal by using the conversion circuit; deleting light signal of two primitive colors from RGB signal by using Gamma gain circuitry; displaying the light signal of single primitive color on the display faceplate; displaying a color testing pattern on the display faceplate; based on difference between the color testing pattern and the light signal of single primitive color, adjusting the YUV signal in order to modify error generated after image signal is input.
Description
Technical field
The present invention relates to a kind of method that is used to proofread and correct the chromatic image of display unit, particularly relate to the method for utilizing character used in proper names and in rendering some foreign names agate gain (gamma gain) circuit to proofread and correct the chromatic image of display unit.
Background technology
Existing various video displays; as television set, computer screen and projector etc.; because various signals source; as TV station, cable television operators or various videocorder; regular meeting is because of the influence of external factors such as circuit and transmission or receiving system when image signal being compressed transmission; and make the color of output image to produce a little error with the raw video color, so each display unit regular meeting provides saturation (saturation) and the whole function of form and aspect (tint) isochrome caidiao opera.
Traditional correcting color image method is for being imported the display unit that a color test pattern (color barpattern) is proofreaied and correct to desire by peripheral device, for example during the correcting computer screen just by this color test patterns of output such as hard disk or peripheral storage device such as CD-ROM drive or floppy drives to computer screen, if then can be exported on the television screen by the color test pattern that videocorder or TV station transmit when desiring correcting TV machine screen, the user utilizes the filter of each single colored light to place color test pattern that adjustment at the moment looks to reach the purpose of correction again.Yet traditional correcting color image method must and need extra single colored light filter such as optical filtering or filter etc. by professional's execution usually, not only obtains to be difficult for and to need carrying out correcting image more exactly in dark place, and this is real to be inconvenience.
Summary of the invention
Therefore main purpose of the present invention is to provide a kind of method of proofreading and correct the chromatic image of display unit, to solve the above problems.
The invention provides a kind of method that is used to proofread and correct the chromatic image of a display unit, this display unit comprises an input, a decoder, be connected in this input, a change-over circuit is connected in this decoder, one Gamma gain circuit is connected in this change-over circuit, and a display floater.This method comprises the following step: use this decoder that the image signal of importing this input is deciphered to produce yuv signal, use this change-over circuit that this yuv signal is converted to the RGB signal, use this Gamma gain circuit to delete two kinds of signal of primitive color in this RGB signal, remaining single signal of primitive color is shown on this display floater, one color test pattern is shown on this display floater, and imports the error that the back produces to revise this image signal according to this yuv signal of discrepancy adjustment of this color test pattern and this single primitive color light.
The present invention also provides a kind of display unit, it comprises an input, be used for importing image signal, one decoder, be connected in this input, be used for the image signal of importing this input is deciphered to produce yuv signal, one change-over circuit, be connected in this decoder, be used for this yuv signal is converted to the RGB signal, one Gamma gain circuit, be connected in this change-over circuit, this Gamma gain circuit may command is deleted two kinds of signal of primitive color in this RGB signal, and a display floater is connected in this Gamma gain circuit, be used for showing that this Gamma gain circuit deletes single signal of primitive color remaining behind two kinds of signal of primitive color in this RGB signal and show a color test pattern, and an adjusting device, be connected in this change-over circuit and this Gamma gain circuit, be used for adjusting this yuv signal and import the error that produces behind this input to revise this image signal according to this color test pattern.
The invention has the advantages that the Gamma gain circuit that can utilize display unit itself exports the operation of single colored light,, need not can carry out the operation of adjustment of image by other filtering apparatus to reach the purpose of using filter to produce single colored light.
Description of drawings
Fig. 1 is the schematic diagram of first display unit of first embodiment of the invention.
Fig. 2 is the flow chart of the chromatic image of correction first display unit.
Fig. 3 is the schematic diagram of color test pattern.
Fig. 4 is the schematic diagram of first display unit of second embodiment of the invention.
Fig. 5 is the flow chart of the chromatic image of correction second display unit.
The figure number explanation
10 first display unit, 12 inputs
14 decoders, 16 change-over circuits
18 Gamma gain circuits, 20 display floaters
22 adjusting devices, 24 color test patterns
24 color test patterns, 26 hot keys
27 storage devices, 28 color test patterns
30 second display unit
Embodiment
See also Fig. 1, Fig. 1 is the schematic diagram of first display unit 10 of the first embodiment of the present invention, first display unit 10 comprises an input 12, can receive various signals source, as TV station, cable television operators and various storage device such as videocorder, the signal that internal memory or CD-ROM drive etc. sent, one decoder 14, be connected in input 12, be used for the image signal that input 12 is received is deciphered to produce yuv signal, one change-over circuit 16, being connected in decoder 14 is used for the yuv signal that decoding produces later is reduced into RGB signal form by the yuv signal format conversion, one Gamma gain circuit 18, it has program code and is connected in change-over circuit 16, can determine gain via each color component of RGB signal that obtains after change-over circuit 16 conversions, also can determine the ratio of each color component output, an and display floater 20, be used for showing via Gamma gain circuit 18 and adjust resulting RGB image signal later, and wherein this display floater can be a liquid crystal panel, CRT screen or television screen etc.And first display unit 10 also comprises an adjusting device 22, and it is connected in change-over circuit 16 and Gamma gain circuit 18, can be used to adjust the ratio of yuv signal input and adjusts each color component gain of RGB signal that Gamma gain circuit 18 is exported.
See also Fig. 2, Fig. 2 proofreaies and correct the flow chart of the chromatic image of first display unit 10 for the present invention.The method of correcting color image includes the following step: step 60: please refer to Fig. 3, Fig. 3 is the schematic diagram of a color test pattern 24, the color test pattern
24 are made up of many different colours blocks, and alphabetical A then represents various different face to N
The block of look.Color test pattern 24 is inputed to input 12, the color test pattern
24 can be stored on the storage device, for example videocorder, internal memory or CD-ROM drive etc., or via
TV station and input that cable television operators are sent to 12; Step 62: use the color test pattern 24 image signals decoding of 14 pairs of fan-ins 12 of decoder
To produce yuv signal; Step 64: use change-over circuit 16 will decipher the yuv signal of the color test pattern 24 that produces later
Be reduced into RGB signal form by the yuv signal format conversion; Step 66: use adjusting device 22 to adjust Gamma gain circuit 18, so that change by change-over circuit 16
Change the only remaining single signal of primitive color output of the RGB signal that obtains later, this is single former
Coloured light can be blue light, red light or green light, and the signal of other two kinds of primitive color lights of deletion
Step 68: use display floater 20 to show and adjust resulting list later via Gamma gain circuit 18
One primitive color light image signal; And step 70: resulting single signal of primitive color was in showing after foundation was adjusted via Gamma gain circuit 18
Show color test pattern 24 shown on the panel 20, and use adjusting device 22 to adjust
The input of the yuv signal of change-over circuit 16, use be modified on the display floater 20 shown
Color test pattern 24 being seen differences.
And in the step 70, carry out the correction work of image signal by being seen color test pattern 24 on display floater 20, do further at this and introduce.See also Fig. 3, when resulting single signal of primitive color is blue light after adjusting via Gamma gain circuit 18, when execution in step 70 on display floater 20 shown color test pattern 24, if can use adjusting device 22 to be adjusted to consistent with the being seen image color in H district and G district and N district the A district, being can be with A, H two districts and G, when N two districts are adjusted to and are considered as combining together, just represents the image saturation in the image signal source of fan-in 12 to proofread and correct and finishes.This be because the composition of A, H two district's colors only the composition of blue light is identical, and composition difference red, green two color light, so filter out after red, the green two color light if adjust A, H two district colors when showing unanimity, then represent this blue light composition to proofread and correct and finish, in like manner G, N two districts also are identical action principle.If when adjusting the form and aspect of image, then use adjusting device 22 to be adjusted to consistent with the being seen image color in J district and E district and L district the C district, being can be with C, J two districts and E, when L two districts are adjusted to and are considered as combining together, just represent the image form and aspect in the image signal source of fan-in 12 to proofread and correct and finish, this principle is identical with the principle that image saturation is proofreaied and correct.And proofreaied and correct after the single colored light signal usually, all the other two color light are also proofreaied and correct on the way and are finished, this is because the error of image signal often comes from the overall offset of primaries coordinate in chromatic diagram, and less be the error of independent primitive color light.And if will carry out the correction of primaries respectively, also can distinguish and import three kinds of signal of primitive color separately, proofread and correct and carry out three times.
And via above step, the operation that just can utilize first display unit, 10 Gamma gain circuits 18 own to export single colored light, to reach the purpose of using filter to produce single colored light, be adjusted at color test pattern 24 shown on the display floater 20 via adjusting device 22 again, come from the signal attenuation that takes place in the transmission course or noise jamming and cause error with image that actual display panel 20 is presented to revise input signal.
See also Fig. 4, Fig. 4 is the schematic diagram of second display unit 30 of the second embodiment of the present invention, second embodiment, second display unit 30 and the first embodiment difference are that first embodiment is to input 12, the second an embodiment built-in color test pattern 28 in second display unit 30 then by outside input color test pattern 24.Second display unit 30 also comprises input 12, can receive various signals source, as TV station, cable television operators and various storage device such as videocorder, the signal that internal memory or CD-ROM drive etc. sent, decoder 14, be connected in input 12, the image signal decoding that is used for receiving is to produce yuv signal, change-over circuit 16, being connected in decoder 14 is used for the yuv signal that decoding produces later is reduced into RGB signal form by the yuv signal format conversion, Gamma gain circuit 18, it has program code and is connected in change-over circuit 16, can determine gain via each color component of RGB signal that obtains after change-over circuit 16 conversions, also can determine the ratio of each color component output, and display floater 20, be used for showing via Gamma gain circuit 18 and adjust resulting RGB image signal later, and wherein this display floater can be a liquid crystal panel, CRT screen or television screen etc.
And second display unit 30 also comprises a storage device 27, it stores a color test pattern 28, storage device 27 is connected in adjusting device 22, and adjusting device 22 is connected in decoder 14, change-over circuit 16 and Gamma gain circuit 18, can be used to the color test pattern 28 that storage device 27 stores is inputed to decoder 14, adjust the ratio of yuv signal input and adjust each color component gain of RGB signal that Gamma gain circuit 18 is exported, adjusting device 22 also comprises a hot key 26, its function be press be about to behind the hot key built-in color test pattern 28 export decoder 14 to and adjust Gamma gain circuit 18 with deletion wherein two kinds of signal of primitive color output keep the output of single signal of primitive color.
See also Fig. 5, Fig. 5 proofreaies and correct the flow chart of the chromatic image of second display unit 30 for the present invention.The method of correcting color image includes the following step: step 72: control the color test pattern 28 of the hot key 26 of adjusting device 22 with storage device 27 storages
Input to decoder 14; Step 74: the color test pattern 28 image signals decoding of using 14 pairs of inputs of decoder is to produce
Yuv signal; Step 76: use change-over circuit 16 will decipher the yuv signal of the color test pattern 28 that produces later
Be reduced into RGB signal form by the yuv signal format conversion; Step 78: the hot key 26 of controlling adjusting device 22 is used adjustment Gamma gain circuit 18, changes with deletion
Change two kinds of signal of primitive color outputs in the RGB signal that obtains after circuit 16 conversions,
And keep the output of single signal of primitive color, the single primitive color light of this reservation can be blue light,
Red light or green light; Step 80: use display floater 20 to show and adjust resulting list later via Gamma gain circuit 18
One primitive color light image signal; And step 82: resulting single signal of primitive color was in showing after foundation was adjusted via Gamma gain circuit 18
Show color test pattern 28 shown on the panel 20, and use adjusting device 22 to adjust
The input of the yuv signal of change-over circuit 16, use be modified on the display floater 20 shown
And in the step 82, use adjusting device 22 to adjust the yuv signal input of change-over circuit 16, it is then identical with step 70 among first embodiment to use the method and the principle that are modified at color test pattern 28 being seen differences shown on the display floater 20, so no longer describe in detail in this.
And via above step, the operation that just can utilize built-in color test pattern 28 of second display unit 30 itself and Gamma gain circuit 18 to export single colored light, to reach the purpose of using filter to produce single colored light, adjust color test pattern 28 shown on display floater 20 via adjusting device 22 again, cause error with image that actual display panel 20 is presented to be modified at the signal attenuation that takes place because of the transmission signal process in second display unit 30 or noise jamming.In addition via hot key 26 design of adjusting device 22, can allow general user make things convenient for and just second display unit 30 is carried out adjustment of image fast.
Method compared to the chromatic image of known correction display unit, method of the present invention can utilize the Gamma gain circuit of display unit itself to export the operation of single colored light, to reach the purpose of using filter to produce single colored light, just need not can carry out the operation of adjustment of image by other filtering apparatus, can allow does not have the general user of professional optical filtering equipment can carry out the work of adjustment of image voluntarily yet, the hot key that utilizes a humanization interface in addition can allow general user make things convenient for and the quick operation of just display unit being carried out colour correction the operation that built-in color test pattern cooperates Gamma gain circuit to export single colored light.Need not expend extra cost and use extra filtering apparatus just can reach the effect of convenient and quick correcting color image so invention has.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (19)
1. method that is used to proofread and correct the chromatic image of a display unit, this display unit comprises an input, one decoder, be connected in this input, a change-over circuit is connected in this decoder, one Gamma gain circuit, be connected in this change-over circuit, and a display floater, this bearing calibration comprises the following step:
(a) use this decoder that the image signal of importing this input is deciphered to produce yuv signal;
(b) use this change-over circuit that this yuv signal is converted to the RGB signal;
(c) use this Gamma gain circuit to delete two kinds of signal of primitive color in this RGB signal;
(d) remaining single signal of primitive color is shown on this display floater;
(e) a color test pattern is shown on this display floater; And
(f) import the error that produces behind this input according to this yuv signal of discrepancy adjustment of this color test pattern and this single primitive color light to revise this image signal.
2. the method for claim 1, wherein the single primitive color light of step (d) is blue.
3. the method for claim 1, wherein the single primitive color light of step (d) is red.
4. the method for claim 1, wherein the single primitive color light of step (d) is green.
5. the method for claim 1, wherein this color test pattern is built in this display unit in being.
6. the method for claim 1, wherein this display unit also comprises an adjusting device, is used for adjusting this YUV signal.
7. the method for claim 1, wherein this display unit is a monitor.
8. the method for claim 1, wherein this display unit is a projector.
9. the method for claim 1, wherein this display unit is a television set.
10. display unit of implementing the described method of claim 1.
11. a display unit, it comprises:
One input is used for importing image signal;
One decoder is connected in this input, is used for the image signal of importing this input is deciphered to produce yuv signal;
One change-over circuit is connected in this decoder, is used for this yuv signal is converted to the RGB signal;
One Gamma gain circuit is connected in this change-over circuit, and this Gamma gain circuit may command is deleted two kinds of signal of primitive color in this RGB signal;
One display floater is connected in this Gamma gain circuit, is used for showing that this Gamma gain circuit deletes remaining single signal of primitive color behind two kinds of signal of primitive color in this RGB signal, and shows a color test pattern; And
One adjusting device is connected in this change-over circuit and this Gamma gain circuit, is used for adjusting this yuv signal according to this color test pattern and imports the error that produces behind this input to revise this image signal.
12. display unit as claimed in claim 11, wherein this single primitive color light is blue.
13. display unit as claimed in claim 11, wherein this single primitive color light is red.
14. display unit as claimed in claim 11, wherein this single primitive color light is green.
15. display unit as claimed in claim 11, wherein this color test pattern is built in this display unit in being.
16. display unit as claimed in claim 11, wherein this display unit is a monitor.
17. display unit as claimed in claim 11, wherein this display unit is a projector.
18. display unit as claimed in claim 11, wherein this display unit is a television set.
19. display unit as claimed in claim 11, wherein this Gamma gain circuit has program code, with two kinds of signal of primitive color in this RGB signal of control deletion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03110175 CN1282369C (en) | 2003-04-15 | 2003-04-15 | Method of correcting display device colour image and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03110175 CN1282369C (en) | 2003-04-15 | 2003-04-15 | Method of correcting display device colour image and its device |
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| Publication Number | Publication Date |
|---|---|
| CN1538758A true CN1538758A (en) | 2004-10-20 |
| CN1282369C CN1282369C (en) | 2006-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03110175 Expired - Fee Related CN1282369C (en) | 2003-04-15 | 2003-04-15 | Method of correcting display device colour image and its device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584048C (en) * | 2005-07-27 | 2010-01-20 | 深圳Tcl新技术有限公司 | Color signal generating method and apparatus for television |
| CN103123782A (en) * | 2011-11-17 | 2013-05-29 | 晨星软件研发(深圳)有限公司 | Panel color correction method and relevant color correction system |
| CN104410904A (en) * | 2014-12-25 | 2015-03-11 | 安科智慧城市技术（中国）有限公司 | Video playing method and video playing device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876705B (en) * | 2012-10-29 | 2013-10-30 | 江南大学 | Method for breeding high-yield leucine aminopeptidase strain by protoplast transformation |
-
2003
- 2003-04-15 CN CN 03110175 patent/CN1282369C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584048C (en) * | 2005-07-27 | 2010-01-20 | 深圳Tcl新技术有限公司 | Color signal generating method and apparatus for television |
| CN103123782A (en) * | 2011-11-17 | 2013-05-29 | 晨星软件研发(深圳)有限公司 | Panel color correction method and relevant color correction system |
| CN103123782B (en) * | 2011-11-17 | 2015-07-29 | 晨星软件研发(深圳)有限公司 | Method and the relevant color calibration system of panel colour correction |
| CN104410904A (en) * | 2014-12-25 | 2015-03-11 | 安科智慧城市技术（中国）有限公司 | Video playing method and video playing device |
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| Publication number | Publication date |
|---|---|
| CN1282369C (en) | 2006-10-25 |
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Granted publication date: 20061025 Termination date: 20120415 |