Resolution conversion device and method, and information processing apparatus

摘要

A line buffer unit stores the pixel values of image data for respective lines in synchronism with pixel clocks and a horizontal sync signal. An output counter generates a coordinate value used to specify a pixel position in second image data on the basis of the count value of predetermined clocks and the horizontal sync signal, and a data request unit converts the generated coordinate value into a pixel position in input image data on the basis of the set scale value. The pixel values of pixels required for arithmetic operations are acquired from the line buffer unit on the basis of this pixel position, and an arithmetic unit calculates the pixel value of a pixel corresponding to the coordinate value. When the arithmetic unit is not ready to execute the arithmetic operation of the pixel value, generation of the coordinate value by the output counter is stopped until the arithmetic unit is ready to execute the arithmetic operation.