Graphics processing device and method with graphics versus video color space conversion discrimination
AssigneeATI International SRL
InventorDavid Glen
Life of this patent
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Abstract
A graphics processing device includes a graphic and video blender having an input operative to receive graphics or video data obtained from a frame buffer containing multiple formats of data for display on at least one of an RGB monitor and a television monitor. The processing device has an output and is operative to assign pixel type flags to output pixels in a blended image. A signal scaler is operatively coupled to receive the blended image from the graphic and video blender. A coefficient multiplexor selects coefficients for the signal scaler from a plurality of sets of coefficients in response to the assigned pixel type flag.
Claims8
A method for providing image data for both a RGB monitor and television monitor comprising the steps of:
- blending scaled video data and graphic data to produce a blended image containing video and graphics pixels;
- providing for output to the RGB monitor, the blended image;
- assigning a pixel type flag to pixels in the blended image;
- detecting a type of pixel in the blended image, based on the pixel type flag, to determine whether a pixel is a graphics pixel or video pixel;
- and
- selecting at least one of video pixel scaling coefficients and graphics pixel scaling coefficients based on the pixel type flag;
- and
- providing scaled graphics pixels and rescaled video pixels for output to the television monitor.
A method for providing image data for both a RGB monitor and television monitor comprising the steps of:
- blending video data and scaled graphic data to produce a blended image containing video and graphics pixels;
- providing for output to the television monitor, the blended image;
- assigning a pixel type flag to pixels in the blended image;
- detecting a type of pixel in the blended image, based on the pixel type flag, to determine whether a pixel is a graphics pixel or video pixel;
- and
- selecting at least one of video pixel scaling coefficients and graphics pixel scaling coefficients based on the pixel type flag;
- and
- providing for output to the RGB monitor, rescaled graphics pixels and scaled video pixels.
A graphics processing device comprising:
- a graphic and video blender having an input operative to receive graphics or video data obtained from a frame buffer containing multiple formats of data for display on at least one of an RGB monitor and a television monitor, and an having an output and operative to assign pixel type flags to output pixels in a blended image;
- a signal scaler, operatively coupled to receive the blended image from the graphic and video blender;
- and
- a coefficient multiplexor operatively coupled to the signal scaler, and operative to select coefficients for the signal scaler from a plurality of sets of coefficients in response to the assigned pixel type flag.
Dependencies are inferred from the claim text.