Image processing device and electronic apparatus

Patent metadata

Field	Value
Publication number	US-9601048-B2
Application number	US-201514638591-A
Country	US
Kind code	B2
Filing date	Mar 4, 2015
Priority date	Mar 25, 2014
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

Provided is an image processing device including a luminance information generating unit that generates fourth luminance information, which becomes the basis of luminance of a fourth pixel, on the basis of variation characteristics with the passage of time regarding light-emission luminance in the fourth pixel of a display unit including a first pixel, a second pixel, and a third pixel which emit three basic color light beams, and the fourth pixel that emits a non-basic color light beam, and first luminance information, second luminance information, and third luminance information which correspond to the first pixel, the second pixel, and the third pixel, respectively.

First claim

What is claimed is:

1. An image processing device comprising:
a luminance information generating unit that generates fourth luminance information on a basis of variation characteristics with a passage of time regarding light-emission luminance in a fourth sub-pixel of a display unit, wherein the fourth luminance information becomes a basis of luminance of the fourth sub-pixel, wherein the display unit further includes a first sub-pixel, a second sub-pixel, and a third sub-pixel that emit one of three basic color light beams, and the fourth sub-pixel that emits a non-basic color light beam, and wherein first luminance information, second luminance information, third luminance information, and the fourth luminance information correspond to the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, respectively.

2. The image processing device according to claim 1 , further comprising:
an operation unit that obtains the variation characteristics with the passage of time on a basis of luminance information.

3. The image processing device according to claim 2 , wherein the operation unit obtains the variation characteristics with the passage of time also on a basis of a light-emission time.

4. The image processing device according to claim 2 , wherein the operation unit obtains the variation characteristics with the passage of time also on a basis of a temperature of the display unit.

5. The image processing device according to claim 1 , further comprising:
an operation unit that obtains the variation characteristics with the passage of time on a basis of an operation voltage or an operation current in the display unit.

6. The image processing device according to claim 1 ,
wherein the non-basic color light beam is a white light beam.

7. The image processing device according to claim 1 ,
wherein the three basic color light beams include a red light beam, a green light beam, and a blue light beam.

8. An image processing device comprising:
a luminance information generating unit that generates fourth luminance information on a basis of variation characteristics with a passage of time regarding light-emission luminance in a fourth sub-pixel of a display unit, wherein the fourth luminance information becomes a basis of luminance of the fourth sub-pixel, wherein the display unit further includes a first sub-pixel, a second sub-pixel, and a third sub-pixel that emit one of three basic color light beams, and the fourth sub-pixel that emits a non-basic color light beam, and wherein first luminance information, second luminance information, third luminance information, and the fourth luminance information correspond to the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, respectively; and
a parameter calculating unit that obtains a first parameter, a second parameter, and a third parameter on the basis of the variation characteristics with the passage of time,
wherein the luminance information generating unit obtains a first value through linear conversion of the first luminance information by using the first parameter, obtains a second value through linear conversion of the second luminance information by using the second parameter, obtains a third value through linear conversion of the third luminance information by using the third parameter, and generates the fourth luminance information on the basis of the first value, the second value, and the third value.

9. The image processing device according to claim 8 ,
wherein the luminance information generating unit corrects the first value, the second value, and the third value on the basis of the variation characteristics with the passage of time, and generates the fourth luminance information on the basis of a minimum value among a corrected first value, a corrected second value, and a corrected third value.

10. The image processing device according to claim 8 ,
wherein the luminance information generating unit generates fifth luminance information, which becomes the basis of luminance of the first sub-pixel, on the basis of the first luminance information, the fourth luminance information, and the first parameter, generates sixth luminance information, which becomes the basis of luminance of the second sub-pixel, on the basis of the second luminance information, the fourth luminance information, and the second parameter, and generates seventh luminance information, which becomes the basis of luminance of the third sub-pixel, on the basis of the third luminance information, the fourth luminance information, and the third parameter.

11. The image processing device according to claim 10 ,
wherein the luminance information generating unit corrects the fifth luminance information, the sixth luminance information, and the seventh luminance information on the basis of the variation characteristics with the passage of time.

12. The image processing device according to claim 10 , further comprising:
a correction unit that corrects the fourth luminance information, the fifth luminance information, and the sixth luminance information on the basis of variation characteristics with the passage of time regarding light-emission luminance in the first sub-pixel, the second sub-pixel, and the third sub-pixel.

13. The image processing device according to claim 8 ,
wherein the parameter calculating unit obtains the first parameter, the second parameter, and the third parameter on the basis of a temperature of the display unit.

14. An electronic apparatus comprising:
a display unit that includes a first sub-pixel, a second sub-pixel, and a third sub-pixel that emit one of which emit three basic color light beams, and a fourth sub-pixel that emits a non-basic color light beam;
an image processing unit that includes a luminance information generating unit that generates fourth luminance information on a basis of variation characteristics with a passage of time regarding light-emission luminance in the fourth sub-pixel of the display unit, wherein the fourth luminance information becomes a basis of luminance of the fourth sub-pixel, and wherein first luminance information, second luminance information, third luminance information, and the fourth luminance information correspond to the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel, respectively; and
a control unit that performs operation control with respect to the image processing unit.

15. The electronic apparatus according to claim 14 , wherein the image processing unit further includes an operation unit that obtains the variation characteristics with the passage of time on a basis of luminance information.

16. The electronic apparatus according to claim 15 , wherein the operation unit obtains the variation characteristics with the passage of time also on a basis of a light-emission time.

17. The electronic apparatus according to claim 15 , wherein the operation unit obtains the variation characteristics with the passage of time also on a basis of a temperature of the display unit.

18. The electronic apparatus according to claim 14 , wherein the image processing unit further includes an operation unit that obtains the variation characteristics with the passage of time on a basis of an operation voltage or an operation current in the display unit.

19. The electronic apparatus according to claim 14 , wherein the non-basic color light beam is a white light beam, and wherein the three basic color light beams include a red light beam, a green light beam, and

Assignees

• Sony Corp

Inventors

• Yano Tomoya
• Inoue Yasuo
• Funatsu Yohei

Classifications

• G09G2330/021

  Power management, e.g. power saving · CPC title

• G09G2320/041

  Temperature compensation · CPC title

• G09G3/3208 Primary

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• G09G2320/045

  Compensation of drifts in the characteristics of light emitting or modulating elements · CPC title

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title