| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for reducing data width used for signal processing without quality deterioration of image. SOLUTION: The image signal processing apparatus has an inverse gamma-conversion unit for receiving gamma-converted video signals and subjecting the video signals to processing for canceling gamma-conversion characteristics, and a conversion unit for generating floating point data from fixed point type data which is proportional to luminance as an output from the inverse gamma-conversion unit to transfer the floating point data or to subject the floating point data to reference table processing or signal processing, wherein the floating point data has a significand and an exponent, and the radix of the exponent is 4. COPYRIGHT: (C)2009,JPO&INPIT
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