H - Electricity – 03 – H
Patent
H - Electricity
03
H
328/0.3
H03H 17/02 (2006.01) H03H 17/06 (2006.01)
Patent
CA 1266514
ABSTRACT OF THE INVENTION A digital filter has an input terminal provided with an input digital signal. A delay circuit connected to the input terminal produces a plurality of delayed digital signals each having a different delay time with respect to the input digital signal. A first circuit adds the input digital signal and/or the plurality of delayed digital signals to one or more digital coefficient signals of the same value so as to produce one or more added digital signals. A multiplying circuit multiplies the one or more respective digital coefficient signals by the one or more added digital signals and/or one or more of the plurality of delayed digital signals to produce a plurality of multiplied digital signals. A second circuit adds the plurality of multiplied digital signals to produce an output digital signal, and a circuit connected between the delay circuit and a multiplying circuit increases the one or more added digital signals by one or more predetermined number of times, whereby the one or more respective digital coefficient signals have inversely proportional values corresponding to the one or more predetermined numbers of times of the values of the one or more added digital signals and/or the one or more of the plurality of delayed digital signals.
495214
Iwase Seiichiro
Yamazaki Takao
Gowling Lafleur Henderson Llp
Sony Corporation
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