Methods and systems for sub-pixel rendering with adaptive filtering

Patent metadata

Field	Value
Publication number	US-9355601-B2
Application number	US-201313864178-A
Country	US
Kind code	B2
Filing date	Apr 16, 2013
Priority date	May 9, 2001
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

Processing data for a display including pixels, each pixel having color sub-pixels, comprises receiving pixel data. Once the pixel data is received, processing data for a display includes converting the pixel data to sub-pixel rendered data, the conversion generating the sub-pixel rendered data for a sub-pixel arrangement including alternating red and green sub-pixels on at least one of a horizontal and vertical axis. Next processing data for a display includes correcting the sub-pixel rendered data if a condition exists and outputting the sub-pixel rendered data.

First claim

What is claimed is:

1. A method of operating spatial sampling filters, comprising:
detecting subpixel rendered areas by comparing, for a set of pixels that includes two or more pixels surrounding a pixel and the pixel, a sum of the set of pixels' red values with a sum of the set of pixels' green values;
turning on a first set of spatial sampling filters for said subpixel rendered areas in response to said detecting subpixel rendered areas;
detecting non-subpixel rendered; and
turning on a second set of spatial sampling filters for said non-subpixel rendered areas in response to said detecting non-subpixel rendered areas.

2. The method of claim 1 , wherein said detecting subpixel rendered areas comprises R x ≠G x and R x−2 +R x−1 +R x +R x+1 +R x+2 ≅G x−2 +G x−1 +G x +G x+1 +G x+2 , wherein R is a value of red, G is a value of green, and x is a pixel position in a row of pixels.

3. The method of claim 1 , wherein said detecting subpixel rendered areas comprises R x ≠G x and R x−1 +R x +R x+1 +R x+2 ≅G x−2 +G x−1 +G x +G x+1 , wherein R is a value of red, G is a value of green, and x is a pixel position in a row of pixels.

4. The method of claim 1 , wherein said detecting subpixel rendered areas comprises R x ≠G x and R x−2 +R x−1 +R x +R x+1 +R x+2 ≅a (G x−2 +G x−1 +G x +G x+1 +G x+2 ), wherein R is a value of red, G is a value of green, a is a constant, and x is a pixel position in a row of pixels.

5. The method of claim 1 , wherein said detecting subpixel rendered areas comprises R x ≠G x and R x−1 +R x +R x+1 +R x+2 ≅a (G x−2 +G x−1 +G x +G x+1 ), wherein R is a value of red, G is a value of green, a is a constant, and x is a pixel position in a row of pixels.

Assignees

• Samsung Display Co Ltd

Inventors

• Brown Elliott Candice Hellen

Classifications

• G09G2340/0407

  Resolution change, inclusive of the use of different resolutions for different screen areas · CPC title

• G09G2340/0421

  Horizontal resolution change · CPC title

• G09G2320/0276

  for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction · CPC title

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G09G3/2003

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title