US PATENT SUBCLASS 379 / 411
.~.~.~ Having transversal filter

Current as of: June, 1999
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379 /   HD   TELEPHONIC COMMUNICATIONS

399  DF  SUBSCRIBER LINE OR TRANSMISSION LINE INTERFACE {5}
406  DF  .~ Echo suppression, antisinging, or reverse path blocking {4}
410  DF  .~.~ Echo cancellation (e.g., phase opposition) {1}
411.~.~.~ Having transversal filter

DEFINITION

Classification: 379/411

Having transversal filter:

(under subclass 410) Subject matter wherein an echo is cancelled by a multiply tapped delay line with a summing or weighting circuit.

SEE OR SEARCH CLASS

333, Wave Transmission Lines and Networks,

165, for a time domain filter.