| 摘要 |
PROBLEM TO BE SOLVED: To improve the functions of a processor by raising precision in reproducing signals, increasing the speed of calculation, and reducing arithmetic period and to reduce the cost, concerning a signal processing method for performing the analog conversion of discrete signals and the magnification/reduction of signal intervals. SOLUTION: The signal processing method is one, by which an interpolation processing in the discrete signal interval is performed by the signal processor with the use of a polynomial function which is defined in a finite section. The coefficient of the polynomial function which is effective in one discrete interval of the discrete signal is obtained by the addition/subtraction of a plurality of discrete signals, corresponding to a plurality of sampling intervals which include the effective discrete signal interval. An inter-signal interpolation signal is generated, based on this polynomial function, in making the continuous signal of the discrete signal and enlarging the range of the value of the discrete signal. COPYRIGHT: (C)2005,JPO&NCIPI
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