Color balancing a multicolor display

• US 6,417,863 B1
• Filed: 08/15/2000
• Issued: 07/09/2002
• Est. Priority Date: 04/28/1999
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Smith, Ronald D.
• Primary Examiner(s): Luu, Matthew
• Assistant Examiner(s): HAVAN, THU THAO
• Application Number:
  US09/639,631
• Time in Patent Office: 693 Days
• Field of Search: 345/150, 345/72, 345/22, 345/83, 345/431, 345/589, 345/590, 345/605, 345/591, 345/592, 345/593, 345/597, 345/604, 345/600, 345/603, 345/601, 348/223, 348/224, 348/225, 348/655, 399/39, 356/404, 355/35
• US Class Current: 345/590
• CPC Class Codes: G06F 3/04897 Special input arrangements or commands for improving display capability
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2320/029 by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
• CPC Class Codes: G09G 2320/043 Preventing or counteracting the effects of ageing
• CPC Class Codes: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607
• CPC Class Codes: H04N 17/02 for colour television signals
• CPC Class Codes: H04N 17/04 for receivers
• CPC Class Codes: H04N 9/73 Colour balance circuits, e.g. white balance circuits or colour temperature control camera processing pipelines for colour balance H04N23/88

Abstract

Numerous embodiments of a method of adjusting the color balance of a display are disclosed. in one embodiment, the color balance of a display is adjusted by modulating two selected colors so that at some point during the modulation the two colors appear substantially the same an the display, and the modulation is adjusted to change the point at which the colors appear substantially the same. The color balance of the display is modified based, at least in part, on a measurement of the modulation adjustment. In another embodiment of a method of adjusting the color balance of a display, the luminance and/or chromaticity of a color from the color space of the display is modified, and luminance and/or chromaticity of a color from a reference color space is modulated, where the applied modulation over time of the two colors are mirror images with respect to each other. The modulation is adjusted so that the colors appear substantially the same at a selected point during the modulation of both colors, and the color balance of the display is modified based, at least in part, on a measurement of the modulation adjustment.

Claims

1. A method of adjusting the color balance of a display comprising:

modulating two selected colors so that at some point during the modulation the two colors appear substantially the same on the display;

adjusting the modulation to change the point at which the colors appear substantially the same; and

modifying the color balance of the display based, at least in part, on a measurement of the modulation adjustment.

2. The method of claim 1, wherein modulating the two selected colors comprises modulating the luminance and/or chromaticity of the two selected colors.

3. The method of claim 2, wherein modulating the luminance and/or chromaticity of the two selected colors comprises modulating the luminance.

4. The method of claim 1, wherein modulating the two selected colors comprises modulating the two selected colors periodically.

5. A method of adjusting the color balance of a display comprising:

modulating the luminance and/or chromaticity of a color from the color space of the display;

modulating the luminance and/or chromaticity of a color from a reference color space, wherein the applied modulation over time of the two colors being mirror images with respect to each other;

adjusting the modulation so that the colors appear substantially the same at a selected point during the modulation of both colors; and

modifying the color balance of the display based, at least in part, on a measurement of the modulation adjustment.

6. The method of claim 5, wherein the reference color space comprises a color space that substantially covers the color gamut of human vision.

7. The method of claim 6, wherein the reference color space comprises a color shifted version of the 1976 CIE color space.

8. The method of claim 5, wherein modulating the luminance and/or chromaticity of the two colors comprises modulating the luminance.

9. The method of claim 8, wherein modulating the luminance of the two colors comprises periodically modulating the luminance.

10. The method of claim 9, wherein periodically modulating the luminance of the two colors comprises sinusoidally modulating the luminance.

11. The method of claim 10, wherein adjusting the modulation so that the colors appear substantially the same at a selected point during the modulation of both colors comprises adjusting the modulation so that the colors appear substantially the same at the midpoint of the modulation.

12. The method of claim 11, wherein the reference color space comprises a color space that substantially covers the color gamut of human vision.

13. The method of claim 12, wherein both colors are selected from extended color space.

14. The method of claim 5, wherein adjusting the modulation so that the colors appear substantially the same at a selected point during the modulation of both colors comprises adjusting the modulation so that the colors appear substantially the same at the midpoint of the modulation.

15. The method of claim 5, wherein both colors are selected from extended color space.

16. The method of claim 5, wherein the multicolor display comprises a multicolor polymer emissive display.

17. The method of claim 16, wherein the multicolor polymer emissive display comprises a five-color polymer emissive display.

18. A system comprising:

a multicolor display;

a computing platform coupled to the display, said computing platform in operation, being able to adjust the color balance of the multicolor display by;

modulating the luminance and/or chromaticity of a color from the color space of the multicolor display;

modulating the luminance and/or chromaticity of a color from reference color space, wherein the applied modulation over time of the two colors being mirror images with respect to each other;

adjusting the modulation so that the colors appear substantially the same at a selected point during the modulation of both colors; and

modifying the color balance of the multicolor display based, at least in part, on a measurement of the modulation adjustment.

19. The system of claim 18, wherein the reference color space comprises a color space that substantially covers the color gamut of human vision.

20. The system of claim 18, wherein, during system operation, both colors are selected from extended color space.

21. The system of claim 18, wherein the multicolor display comprises a multicolor polymer emissive display.

22. The system of claim 21, wherein the multicolor polymer emissive display comprises a five-color polymer emissive display.

23. An article comprising:

a storage medium;

said storage medium having stored thereon instructions, said instructions, when executed by a computing platform coupled to a multicolor display, resulting in;

modulating the luminance and/or chromaticity of a color from the color space of the multicolor display;

modulating the luminance and/or chromaticity of a color from reference color space, wherein the applied luminance modulation over time of the two colors being mirror images with respect to each other;

adjusting the modulation so that the colors appear substantially the same at a selected point during the modulation of both colors; and

modifying the color balance of the multicolor display based, at least in part, on a measurement of the modulation adjustment.

24. The article of claim 23, wherein the reference color space comprises a color space that substantially covers the color gamut of human vision.

25. The article of claim 23, wherein, during platform operation, both colors are selected from extended color space.

26. The article of claim 23, wherein said article has stored thereon instructions to be executed by a computing platform coupled to a multicolor display, the multicolor display comprising a multicolor polymer emissive display.

27. The article of claim 23, wherein said article has stored thereon instructions to be executed by a computing platform coupled to a multicolor polymer emissive display, the multicolor polymer emissive display comprising a five-color polymer emissive display.