Adaptive hybrid for a digital subscriber line analog front end

Details Adaptive hybrid for a digital subscriber line analog front end Adaptive hybrid for a digital subscriber line analog front end

2005-09-13

2005-09-13

Ha, Dac V. (Department: 2634)

Pulse or digital communications

Transceivers

Transmission interface between two stations or terminals

C375S222000, C375S258000, C375S285000, C375S346000, C370S282000, C379S402000, C455S296000

Reexamination Certificate

active

06944213

ABSTRACT:
An analog front end for communicating discrete multitone modulated signals on a subscriber line includes a hybrid network for eliminating near-end echos. The hybrid network includes a hybrid input, a receive input, and a hybrid output. The receive input is capacitively coupled to a subscriber line carrying an upstream data signal and a downstream data signal. The hybrid input is capacitively coupled to receive the upstream data signal from a driver. The driver also provides the upstream data signal to the subscriber line. The hybrid output provides the extracted downstream data signal from the subscriber line. The hybrid network may be fabricated on an integrated circuit die. In one embodiment, the hybrid network is a complementary metal oxide semiconductor integrated circuit.

REFERENCES:
patent: 6226331 (2001-05-01), Gambuzza
patent: 6266367 (2001-07-01), Strait
patent: 6281829 (2001-08-01), Amrany
patent: 6295343 (2001-09-01), Hjartarson et al.
patent: 6477249 (2002-11-01), Williamson et al.
patent: 6498511 (2002-12-01), Tamura et al.
patent: 6542477 (2003-04-01), Pal
patent: 2001/0021250 (2001-09-01), Vanderbauwhede
Eric W. Weisstein. “Laplace Transform.” From Mathworld—A Wolfram Web Resource. http://mathworld.wolfram.com/LaplaceTransform.html (1999).

Affiliated with

Also associated with

Rating

Adaptive hybrid for a digital subscriber line analog front end 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 hybrid for a digital subscriber line analog front end, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive hybrid for a digital subscriber line analog front end will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3449984