Title:
【発明の名称】信号濾波装置
Document Type and Number:
Japanese Patent JP2715172
Kind Code:
B2
Abstract:
A programmable sampled data subsampling system includes a programmable antialias filter which bandlimlts the information bandwidth of the signal to be subsampled in accordance with the subsampling rate. The antialias filter includes a recursive filter which scales and combines (304,306,308) input samples and delayed (310) combined samples in proportions of K and (1-K) where K is a variable. The variables K are applied (314,316,318) to the recursive filter in repeating sequences of N values of K where N is the subsampling factor. Every N combined sample is extracted (312,320) and provided as the subsampled signal.
Inventors:
David Lowell McNilly
Russell Thomas Fling
Russell Thomas Fling
Application Number:
JP1379690A
Publication Date:
February 18, 1998
Filing Date:
January 25, 1990
Export Citation:
Assignee:
RCS Thomson Licensing Corporation
International Classes:
H03H17/00; H03H17/04; H04N5/14; H04N5/265; H04N5/45; H04N7/26; H04N21/2365; H04N21/434; (IPC1-7): H03H17/04; H04N5/265
Other References:
IEEE 32ND INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE=1985
Attorney, Agent or Firm:
Katsunori Watanabe