Digital filter for shared-time processing on several channels
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United States of America Patent
Stats
-
Apr 6, 1982
Grant Date -
N/A
app pub date -
Jan 17, 1980
filing date -
Jan 29, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital filter for shared-time processing on several channels. The filter has several elementary cells (C.sub.1 to C.sub.K), each comprising a read-write memory (M.sub.1 to M.sub.K), a read-only memory (H.sub.1 to H.sub.K), and an arithmetic unit (U.sub.1 to U.sub.K). A page address counter CT.sub.1, a word address counter CT.sub.2 and a weighting coefficient address counter CT.sub.3 are common to the cells. Delayed discrete values are transferred by the relative addressing of the memory words. The filter will find particular application as a half-band extrapolator filter for telephone switching.
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