DISPLAY, DISPLAY CONTROL METHOD, DISPLAY CONTROL DEVICE, AND ELECTRONIC APPARATUS

• US 20150235620A1
• Filed: 06/17/2014
• Published: 08/20/2015
• Est. Priority Date: 06/25/2013
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Hirakawa, Takashi, Kato, Eiji, Takahota, Noriyoshi
• Granted Patent: US 9,899,000 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2320/062 Adjustment of illumination source parameters
• CPC Class Codes: G09G 2320/064 by time modulation of the brightness of the illumination source
• CPC Class Codes: G09G 2320/0646 Modulation of illumination source brightness and image signal correlated to each other
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 3/36 using liquid crystals
• CPC Class Codes: G09G 3/3696 Generation of voltages supplied to electrode drivers
• CPC Class Codes: G09G 5/10 Intensity circuits
• CPC Class Codes: G09G 5/18 Timing circuits for raster scan displays specially adapted for television H04N ; synchronisation between the display unit and other display units, videodisc player G09G5/12

Abstract

A display device configured to display at least one image. The display device includes at least one light emitter configured to emit a plurality of colored light beams, each of the plurality of colored light beams being a respective color different than the others; and a light emission controller configured to determine, based on at least one characteristic of the at least one image, one or more light beams of the plurality of colored light beams to emit in a frame period corresponding to the at least one image.

Claims

1. A display device configured to display at least one image, the display device comprising:

at least one light emitter configured to emit a plurality of colored light beams, each of the plurality of colored light beams being a respective color different than the others; and

a light emission controller configured to determine, based on at least one characteristic of the at least one image, one or more light beams of the plurality of colored light beams to emit in a frame period corresponding to the at least one image.

2. The display device of claim 1, wherein the at least one characteristic of the at least one image comprises luminance value information related to color components of the at least one image corresponding to the respective colors of the plurality of colored light beams.

3. The display device of claim 2, wherein the light emission controller is further configured to:

compare the luminance value information to a threshold value;

obtain at least one color component, excluding color components with luminance values less than the threshold value; and

determine, as the one or more light beams of the plurality of colored light beams to emit in the frame period corresponding to the at least one image, the colored light beams of the color corresponding to the obtained at least one color component.

4. The display device of claim 2, further comprising:

a display section configured to display the at least one image by transmitting or reflecting light from the at least one light emitter.

5. The display device of claim 4, further comprising:

a display controller configured to drive the display section based on the luminance value information.

6. The display device of claim 5, further comprising:

a memory configured to store the luminance information, wherein;

the display controller is configured to;

read, from the memory, only portions of the luminance information related to the color components that correspond to the one or more light beams of the plurality of colored light beams to emit in the frame period corresponding to the at least one image; and

drive the display section based on the read luminance information.

7. The display device of claim 6, wherein the display controller is further configured to:

write into memory only the luminance information related to the color components that correspond to the one or more light beams of the plurality of colored light beams to emit in the frame period corresponding to the at least one image.

8. The display device of claim 1, wherein the light emission controller is further configured to extend a light emission time of the one or more light beams of the plurality of colored light beams to emit in the frame period corresponding to the at least one image.

9. The display device of claim 1, wherein the light emission controller is further configured to control a number of light emission periods of the one or more light beams of the plurality of colored light beams to emit in the frame period corresponding to the at least one image.

10. The display device of claim 1, wherein the light emission controller is further configured to time-divisionally control the light emission of the one or more light beams of the plurality of colored light beams to emit in the frame period corresponding to the at least one image.

11. The display device of claim 10, wherein the light emission controller is further configured to control light emission periods of the respective one or more light beams of the plurality of colored light beams to emit in the frame period corresponding to the at least one image such that the respective light emission periods overlap at least partially with one another.

12. The display device of claim 1, wherein the light emission controller is further configured to control a light emission start time and/or a light emission finish time of the one or more light beams of the plurality of colored light beams to emit in the frame period corresponding to the at least one image.

13. The display device of claim 1, wherein the light emission controller is further configured to control an emission luminance of the one or more light beams of the plurality of colored light beams to emit in the frame period corresponding to the at least one image.

14. The display device of claim 1, wherein the plurality of colored light beams have the respective colors of red, green and blue.

15. The display device of claim 1, further comprising a converter configured to convert a signal other than an RGB signal into an RGB signal.

16. The display device of claim 1, wherein the display device is a head-mounted display.

17. The display device of claim 1, wherein the display device is a projector.

18. The display device of claim 1, wherein the display device is a field sequential driving type device.

19. A light emission controller configured to control at least one light emitter, the light emission controller comprising:

an analyzer configured to;

receive a plurality of image signals, each of the plurality of image signals corresponding to a respective color;

create a plurality of comparison results by comparing a plurality of luminance values, based on a respective one of the plurality of image signals, to at least one threshold value; and

determine which of the plurality of image signals to display based on the plurality of comparison results; and

a controller configured to control the at least one light emitter based on the determination of the analyzer.

20. A light emitting device, comprising:

a plurality of light emitters, each of the plurality of light emitters configured to emit light of a different color;

a light emission controller configured to;

receive a plurality of image signals, each of the image signals corresponding to a respective one of the plurality of colors;

determine at least one of the plurality of light emitters to emit light based on the plurality of image signals; and

output a control signal to each of the plurality of light emitters based on the determination of the light emission controller.