Apparatus for converting floating point values to gamma...

Details Apparatus for converting floating point values to gamma... Apparatus for converting floating point values to gamma...

2006-02-14

2006-02-14

Bella, Matthew C. (Department: 2676)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S601000, C345S605000, C348S254000, C348S674000, C358S519000, C382S167000

Reexamination Certificate

active

06999098

ABSTRACT:
Graphics processing circuitry includes processing circuitry operative to generate pixel information in response to primitive information, and a correction circuit, coupled to the processing circuitry, operative to generate gamma corrected pixel information in response to the pixel information. The correction circuit converts the floating point pixel information generated by the processing circuitry into a gamma corrected fixed-point value so that gamma space pixel data is stored in the frame buffer. This fixed point gamma corrected pixel information, converted from the floating point pixel information, compensates for the non-linear display characteristics exhibited by current display devices. This results in the display output being more accurate; thereby, improving the appearance quality of the resulting image.

REFERENCES:
patent: 5528741 (1996-06-01), Lucas
patent: 6166781 (2000-12-01), Kwak et al.
patent: 6304300 (2001-10-01), Warren et al.
patent: 6545672 (2003-04-01), Goyins
patent: 6633343 (2003-10-01), Ito et al.

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