Color sequence control for video display apparatus

• US 8,432,341 B2
• Filed: 03/13/2009
• Issued: 04/30/2013
• Est. Priority Date: 11/01/2003
• Status: Active Grant

• Current Assignee: Ignite USA (Ignite)
• Original Assignee: Silicon Quest Kabushiki-Kaisha
• Inventors: Shirai, Akira, Ishii, Fusao
• Primary Examiner(s): NGUYEN, KIMNHUNG T
• Application Number:
  US12/381,590
• Publication Number:
  US 20090174824A1
• Time in Patent Office: 1,509 Days
• Field of Search: 345 82- 89, 345/102, 345/690, 359/629, 359/630
• US Class Current: 345/84
• CPC Class Codes: G09G 2300/08 Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
• 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 2320/0261 in the context of movement of objects on the screen or movement of the observer relative to the screen
• CPC Class Codes: G09G 2320/064 by time modulation of the brightness of the illumination source
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2340/0435 Change or adaptation of the frame rate of the video stream
• CPC Class Codes: G09G 2340/06 Colour space transformation
• CPC Class Codes: G09G 2360/16 Calculation or use of calculated indices related to luminance levels in display data
• CPC Class Codes: G09G 3/2018 by time modulation using two or more time intervals
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 3/346 based on modulation of the reflection angle, e.g. micromirrors micromirrors devices per se G02B26/0833
• CPC Class Codes: H04N 7/0127 by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter
• CPC Class Codes: H04N 9/3111 for displaying the colours sequentially, e.g. by using sequentially activated light sources sequential projection in colour photography G03B33/08
• CPC Class Codes: H04N 9/3155 for controlling the light source light source control per se H05B35/00 – H05B47/00; control of an illumination source for displays in general G09G3/3406
• CPC Class Codes: H04N 9/3179 Video signal processing therefor

Abstract

A video display apparatus is provided, comprising: a light source(s) controllable for emitting a plurality of reference colors; a color conversion circuit received an input video signal for generating the color data of at least one correction color for correcting a reference color emitted from a light source; an image processing unit receives the input video signal for generating an output video signal comprising a plurality of sub-frame signals; and a control circuit applies the color data generated by the color conversion circuit for controlling a light source to display color images.

Claims

1. A video display apparatus comprising:

an adjustable light source for emitting a plurality colors;

a color distribution determination circuit receives and applies an input video signal comprising a plurality of color data to determine and change a color distribution for displaying an image;

a control circuit receives the color distribution from the color determination circuit and applies the color distribution for controlling and changing the adjustable light source for displaying video images with color distribution determined and changed by the color distribution determination circuit; and

an image signal processing unit receives the input video signal including input frame signals the image signal processing unit further processes each of the input frame signals into a plurality of output sub-frame signals with a number of the output sub-frame signals greater than a number of the input frame signals.

2. The video display apparatus according to claim 1 further comprising:

the image signal processing unit further processes the input frame signals to generate the output sub-frame signals and changing the color distributions for each of the output sub-frame signals.

3. The video display apparatus according to claim 1, wherein:

the control circuit further controls and adjusts an emission light intensity of the adjustable light source for each of the sub-frames.

4. The video display apparatus according to claim 1, wherein:

the control circuit further receives a gray scale data to control and adjust an emission light intensity of the adjustable light source for each of the sub-frames in accordance with the gray scale data.

5. The video display apparatus according to claim 1, wherein:

the adjustable light source further comprises a plurality of sub-sources and the control circuit further applies the color distribution to control and adjust an emission light intensity of each of the light sources.

6. The video display apparatus according to claim 1, wherein:

the adjustable light source further includes a plurality of semiconductor light sources for emitting illumination lights of at least three primary colors.

7. The video display apparatus according to claim 1, wherein:

the adjustable light source further includes a plurality of semiconductor light sources for emitting illumination lights of at least six colors.

8. The video display apparatus according to claim 1, wherein:

the adjustable light source further includes a plurality of semiconductor light sources for emitting illumination lights of at least nine colors.

9. The video display apparatus according to claim 1, wherein:

the adjustable light source further comprises a plurality of sub-sources; and

the control circuit further controls at least one or more of the sub-sources to emit light for one of the output sub-frame.

10. The video display apparatus according to claim 1, wherein:

the adjustable light source further comprises a plurality of sub-sources; and

the control circuit further control at least two or more of the sub-sources to emit light for one of the output sub-frame.

11. A video display apparatus comprising:

an adjustable light source comprising a plurality of adjustable sub-sources for emitting a plurality of lights with different colors;

a color distribution determination circuit receives and applies an input video signal comprises a plurality of color data for determining a color distribution for displaying an image;

a control circuit receives the color distribution from the color distribution circuit and applies the color distribution for changing the emission sequence of the sub-sources within one frame for displaying an image according to an output sequence generated and controlled by the control circuit;

the light source comprising the sub-sources emitting the lights of at least a primary color and a color complementary to the primary color; and

an image signal processing unit receives the input video signal including input frame signals, the image signal processing unit further processes each of the input frame signals into a plurality of output sub-frame signals with a number of the output sub-frame signals greater than a number of the input frame signals.

12. The video display apparatus according to claim 11, wherein:

the control circuit receives and applies sub-frame signals to display a sub-frame image for at least one of the sub-frames with one of the primary colors.

13. The video display apparatus according to claim 11, wherein:

the control circuit for applies the sub-frame signals to display a sub-frame image for at least one of the sub-frames with one of the primary colors and at least another sub-frames with a complimentary color.

14. The video display apparatus according to claim 11, wherein:

the control circuit for applying the sub-frame signals to change the output sequences of a sub-frame for displaying a sub-frame video image of the primary color and a sub-frame of the complementary color.

15. The video display apparatus according to claim 11, wherein:

the control circuit to control the light sources for emitting the three primary colors to combine and generate a complementary color.

16. The video display apparatus according to claim 11, further comprising:

a setup circuit for receiving an input video signal including a gray scale data to control an output sequence for displaying an image in accordance with the gray scale data.

17. A video display apparatus comprising:

an adjustable light source comprising a plurality of adjustable sub-sources for emitting a plurality of lights with different colors;

a color distribution determination circuit receives and applies an input video signal comprises a plurality of color data for determining a color distribution for displaying an image;

a control circuit receives the color distribution from the color distribution circuit and applies the color distribution for changing the emission sequence of the sub-sources within one frame for displaying an image according to an output sequence generated and controlled by the control circuit;

a setup circuit for receiving an input video signal including a gray scale data to control an output sequence for displaying an image in accordance with the gray scale data;

the setup circuit further changes the output sequences when the video display apparatus receives a signal to operate in a color emphasis mode.