Device, system and method for electronic true color display

• US 7,113,152 B2
• Filed: 06/07/2001
• Issued: 09/26/2006
• Est. Priority Date: 06/07/2000
• Status: Expired due to Term

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Genoa Color Technologies Limited
• Inventors: Ben-Chorin, Moshe, Ben-David, Ilan
• Primary Examiner(s): Nguyen, Jimmy H.
• Application Number:
  US10/297,672
• Publication Number:
  US 20040100589A1
• Time in Patent Office: 1,937 Days
• Field of Search: 345/32, 345/84, 345/600, 345/603, 345/604
• US Class Current: 345/32
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 2340/06 Colour space transformation
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• 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 9/3114 by using a sequential colour filter producing one colour at a time

Abstract

A device, system and a method for displaying image data of a plurality of colors, the device comprising a light source (50) for producing light having at least four primary colors, a controller (56, 58) for determining a combination of at least four primary colors according to the image data (72) for production by the light source and a viewing screen (60) for displaying the image data the combination from the controller. The present invention is not limited to combinations of colors which are produced from only three primary colors, such as red, green and blue.

Claims

1. A method of producing a color image comprising:

projecting polychromatic light from a light source onto a first side of a color wheel having at least four non-white and non-black color filters;

rotating said color wheel such that the polychromatic light from said light source is sequentially filtered by transmission through said at least four color filters to sequentially produce at a second side of said color wheel, opposite said first side, light of at least four colors, each of said at least four colors having a different chromaticity from the others of the at least four colors in accordance with a data signal; and

spatially modulating said light of at least in accordance with a data signal four colors in accordance with a data signal to produce said color image.

2. The method of claim 1, wherein each of said at least four light colors is produced at least once during one rotation of said color wheel.

3. The method of claim 1, further comprising operating a motor attached to said color wheel for rotating said color wheel.

4. The method of claim 1, further comprising projecting said filtered light onto a viewing screen.

5. The method of claim 1, wherein said spatially modulating said light comprises selectively activating a spatial light modulator in accordance with said data signal.

6. The method of claim 5, wherein said spatial light modulator is a digital micro-mirror device (DMD).

7. The method of claim 5, wherein said selectively activating said spatial light modulator comprises activating said spatial light modulator to sequentially modulate the light of said at least four different colors in accordance with said data signal.

8. The method of claim 1, further comprising converting three-color data representing said color image in terms of three colors into converted image data representing said color image in terms of said at least four different colors.

9. The method of claim 8, further comprising:

receiving image data representing said color image in terms of said at least four colors; and

generating a formatted data signal including a sequence of color data arrays, each array including data representing at least part of said image data corresponding to one of said at least four colors.

10. The method of claim 9, wherein said spatially modulating said light comprises selectively activating a spatial light modulator based on said formatted data signal to produce a light pattern corresponding to said color image.