CONVERSION OF A SUB-PIXEL FORMAT DATA TO ANOTHER SUB-PIXEL DATA FORMAT

• US 20070109331A1
• Filed: 10/13/2006
• Published: 05/17/2007
• Est. Priority Date: 05/09/2001
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Clairvoyante, Inc. (Samsung Electronics Co. Ltd.)
• Inventors: Higgins, Michael, Brown Elliott, Candice
• Granted Patent: US 7,598,963 B2
• Time in Patent Office: Days
• US Class Current: 345/694
• CPC Class Codes: G06T 3/4015 Image demosaicing, e.g. colour filter arrays [CFA] or Bayer patterns
• CPC Class Codes: G06T 3/4069 by subpixel displacements
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2320/0276 for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2340/0414 Vertical resolution change
• CPC Class Codes: G09G 2340/0421 Horizontal resolution change
• CPC Class Codes: G09G 2340/0457 Improvement of perceived resolution by subpixel rendering
• CPC Class Codes: G09G 2340/0492 Change of orientation of the displayed image, e.g. upside-down, mirrored
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• 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

Abstract

A method of operating spatial sampling filters comprises detecting subpixel rendered areas, turning on a first set of spatial sampling filters for the subpixel rendered areas in response to detecting said subpixel rendered areas, detecting non-subpixel rendered areas; and turning on a second set of spatial sampling filters for the non-subpixel rendered areas in response to detecting the non-subpixel rendered areas.

Claims

1. A method of operating spatial sampling filters, comprising:

detecting subpixel rendered areas;

turning on a first set of spatial sampling filters for said subpixel rendered areas in response to detecting said subpixel rendered areas;

detecting non-subpixel rendered areas; and

turning on a second set of spatial sampling filters for said non-subpixel rendered areas in response to detecting said non-subpixel rendered areas.

2. The method of claim 1, wherein detecting said subpixel rendered areas comprises testing for a set of conditions comprising R_x≠

G_x and R<sub>x−

2</sub>+R<sub>x−

1</sub>+R_x+R_x+1+R_x+2≅

G<sub>x−

2</sub>+G<sub>x−

1</sub>+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 detecting said subpixel rendered areas comprises testing for a set of conditions comprising R_x≠

G_x and R<sub>x−

1</sub>+R_x+R_x+1+R_x+2≅

G<sub>x−

2</sub>+G<sub>x−

1</sub>+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 detecting said subpixel rendered areas comprises testing for a set of conditions comprising R_x≠

aG_x and R<sub>x−

2</sub>+R<sub>x−

1</sub>+R_x+R_x+1+R_x+2≅

a(G<sub>x−

2</sub>+G<sub>x−

1</sub>+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 detecting said subpixel rendered areas comprises testing for a set of conditions comprising R_x≠

aG_x and R<sub>x−

1</sub>+R_x+R_x+1+R_x+2≅

a(G<sub>x−

2</sub>+G<sub>x−

1</sub>+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.