Method of and apparatus for displaying a multicolor image

Patent 5341153 Issued on August 23, 1994. Estimated Expiration Date:

August 23, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3843959

High resolution graphics smoothing
Patent #: 4386349
Issued on: 05/31/1983
Inventor: Granberg , et al.

Video pre-filtering in phantom raster generating apparatus
Patent #: 4432009
Issued on: 02/14/1984
Inventor: Reitmeier , et al.

Low resolution raster images
Patent #: 4437122
Issued on: 03/13/1984
Inventor: Walsh , et al.

Signal processing method and apparatus for sampled image signals
Patent #: 4630307
Issued on: 12/16/1986
Inventor: Cok

Matrix-type color picture display apparatus with four-element unit displaying picture elements each being divided into at least two unit driving picture elements
Patent #: 4652912
Issued on: 03/24/1987
Inventor: Masubuchi

Dual clock shift register Patent #: 4771279
Issued on: 09/13/1988
Inventor: Hannah

Inventors

Application

No. 205961 filed on 06/13/1988

US Classes:

345/694, Spatial processing (e.g., patterns or subpixel configuration)345/88Color

Examiners

Primary: Hjerpe, Richard
Assistant: Saras, Steven

Attorney, Agent or Firm

Schechter; Marc D., Tassinari, Jr.; Robert P.

Foreign Patent References

0300509 EP 11/04/1989

International Class

G09G 001/28

Abstract

A method of displaying a high resolution multicolor image on a lower resolution display. The image comprises a plurality of image pixels containing at least first and second image subpixels having first and second colors. The image is displayed on a display having display pixels comprising at least first and second spatially offset display subpixels capable of displaying the first and second colors, respectively. In the method, the first display subpixel is displayed with an intensity which is a function of the intensities of at least two first image subpixels having positions extending over a first region having an area greater than the area of the first display subpixel. The first region is approximately centered on the position of the first display subpixel. A second display subpixel is displayed with an intensity which is a function of the intensities of at least two second image subpixels having positions extending over a second region having an area greater than the area of the second display subpixel. The second region is approximately centered on the position of the second display subpixel. By using a different centered region for each separate subpixel of a composite RGB display picture element in transforming a high resolution multicolor image to a lower resolution display, higher quality images are produced as compared to using a single region for each composite RGB display picture element.

Other References

"Miniatur-Flachbildschirme", radio fernsehen elektronik, Berlin 34 (1985) pp. 253-254
Axford, J. G. "Interleaved Smoothing Raster for Vector CRT Displays". IBM Tech. Disclosure Bull., vol. 19, No. 11, pp. 4412-4414 (Apr. 1977)
Crow. F. C. "The Aliasing Problem in Computer-Generated Shaded Images". Communications of the ACM, vol. 20, No. 11, pp. 799-805 (Nov. 1977)
Gupta, S., et al., "Anti-Aliasing Characters Displayed By Text Terminals", IBM Tech. Disclosure Bull., vol. 25, No. 12, pp. 6434-6436 (May 1983)
Tsuruta, S., et al., "Color Pixel Arrangement Evaluation For LC-TV." 1985 International Display Research Conference, pp. 24 to 2