Echo cancelling system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 31, 1988
Grant Date -
N/A
app pub date -
May 22, 1985
filing date -
May 22, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An echo cancelling system incorporated in a conventional echo canceller with additional circuitry to provide tracking and compensation for drifting of any D.C. offset generated. Upon initial energization of the system (i.e. before data signals are processed thereby) an output signal e.sub.1k from an error signal input device represents a D.C. offset value generated by the components of the system. This value is stored in a D.C. offset register, the loading of which is controlled by a load/inhibit signal. Refining of the stored value during data processing is achieved using predetermined increments .DELTA..sub.1 for half-duplex mode and .DELTA..sub.2 (of smaller size) for full-duplex mode.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully