H - Electricity – 04 – B
Patent
H - Electricity
04
B
340/72
H04B 3/20 (2006.01) H04B 3/23 (2006.01) H04L 5/14 (2006.01)
Patent
CA 1321414
ABSTRACT Transmission System First and second stations (1,2) are linked by a transmission path (3). At least the first station has an echo canceller (14): simultaneous transmission by the second station takes place only during periods which immediately follow a period of transmission by the first: station alone and are of short duration relative to the rate of change of the echo characteristics of the path, thereby taking advantage of the highly-trained state of the echo canceller during those periods.
557809
Brownlie John David
G. Ronald Bell & Associates
LandOfFree
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