Patent ID: 6999098
Filing Date: 2006-02-14
Classification: G09G

Abstract:
1. A graphics processing circuit, comprising: processing circuitry operative to generate floating point pixel information in response to primitive information; a gamma correction circuit, operatively coupled to receive the floating point pixel information from the processing circuitry, and operative to generate fixed point gamma corrected pixel information in response to the floating point pixel information; a look up table for providing base integer data and first input data based on the floating point pixel information wherein the first input data represents a difference value associated with a point on a gamma correction curve; a multiplication circuit operatively coupled to the look up table and operative to provide first intermediate data in response to the first input data and second input data representing a mantissa portion of the floating point pixel information; a first divider circuit, operatively coupled to the multiplication circuit, and operative to provide normalized second intermediate data in response to the first intermediate data; and an addition circuit, operatively coupled to the first divider circuit, and operative to provide fixed point gamma corrected pixel information.