Patent ID: 8553974

Claim:
A signal correcting method, adapted to a signal correcting circuit and suitable for executing a combined multiplication operation, wherein the combined multiplication operation comprises at least a plurality of multiplication parameters, and a combined multiplication parameter is obtained by multiplying the multiplication parameters, the signal correcting method comprising: performing a pre-clamping step by an input clamp apparatus of the signal correcting circuit, for clamping the values of a plurality of input signals according to a plurality of adjustable predetermined values, so as to generate a plurality of corresponding clamping signals, wherein the adjustable predetermined values are obtained by dividing maximum values corresponding to a bit number of output signals by gain coefficients; performing a combined multiplication operation to each of the clamping signals according to the combined multiplication parameter by a combined multiplication apparatus of the signal correcting circuit, so as to output a plurality of results; and respectively clamping the results according to a plurality of corresponding predetermined thresholds by an output clamp apparatus of the signal correcting circuit so as to output the corrected input signals.