SIGNAL PROCESSOR, AND ITS METHOD AND ITS PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a signal processor allowing to apply an intermediate signal to input bit length in a calculating means in conducting specified operation by generating and outputting the intermediate signal obtained in a process for the specified operation by means of the calculating means, and then by inputting the intermediate signal to the calculating means for the operation.

SOLUTION: A coding device 2 conducts a rounding process so that a horizontal interpolation pixel signal may become 16 bits based on a rounding error adjustment signal run from a rounding control circuit 33 by means of horizontal pixel interpolation operation when a movement prediction/compensation circuit 35 generates an interpolation pixel signal with 1/8 pixel accuracy. Thus, vertical pixel interpolation operation is conducted by using a general-purpose processor having 16-bit input bit length.

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