Adaptive electronic transmission signal cancellation...

Pulse or digital communications – Receivers – Interference or noise reduction

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S219000, C455S296000

Reexamination Certificate

active

07492840

ABSTRACT:
An adaptive electronic transmission signal cancellation circuit for separating transmit data from receive data in a bidirectional communication system operating in full duplex mode is disclosed. The output of a main transmitter responsive to a first bias current is connected to the output of a receiver through an internal resistor. A first replica transmitter responsive to a second bias current and matched to the main transmitter current gain and rise/fall time characteristics is connected to the input terminal of the receiver, and produces a cancellation voltage between the output terminal of the main transmitter and the input terminal of the receiver as a function of the second bias current and the internal resistor. A second replica transmitter matched to the current gain and rise/fall time characteristics of the main transmitter and the first replica transmitter and responsive to the second bias current is connected to the output terminal of the main transmitter for canceling excess current, developed by the first replica transmitter, at the output terminal of the main transmitter.

REFERENCES:
patent: 5630223 (1997-05-01), Bahu et al.
patent: 5729829 (1998-03-01), Talwar et al.
patent: 6229992 (2001-05-01), McGeehan et al.
patent: 6282001 (2001-08-01), Whitney
patent: 6373908 (2002-04-01), Chan
patent: 6744831 (2004-06-01), Chan
patent: 7046752 (2006-05-01), Chan

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Adaptive electronic transmission signal cancellation... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive electronic transmission signal cancellation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive electronic transmission signal cancellation... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4128741

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.