Reducing coupled noise in pseudo-differential signaling systems

Details Reducing coupled noise in pseudo-differential signaling systems Reducing coupled noise in pseudo-differential signaling systems

2006-08-29

2006-08-29

Tran, Khai (Department: 2611)

Pulse or digital communications

Cable systems and components

C375S317000, C375S318000, C326S027000, C326S045000, C326S081000

Reexamination Certificate

active

07099395

ABSTRACT:
A pseudo-differential signaling system uses a plurality of signal lines and a single, common reference voltage. Signal line voltages are interpreted only in comparison to the reference line voltage. Within a receiving circuit, the reference line is buffered prior to its distribution to multiple comparators. The system utilizes an active buffer having a bandwidth that is significantly greater than the resonant input frequency of the receiving circuit. In an alternative embodiment, the signal lines are also buffered. In this embodiment, the buffers are implemented with transistor-based source-followers. The buffer associated with the reference line has a larger current capacity than the buffers associated with the signal lines. In yet another embodiment, a comparator produces a correction signal that is equal to the noise present on the signal lines. This noise is then subtracted from the signal voltages.

REFERENCES:
patent: 5578939 (1996-11-01), Beers et al.
patent: 5644254 (1997-07-01), Boudry
patent: 5818261 (1998-10-01), Perner
patent: 5923211 (1999-07-01), Maley et al.
patent: 5994925 (1999-11-01), Sessions
Smith, Ralph J., “Operational Amplifiers,” Electronics Circuits and Devices, second edition. Copyright 1980 by John Wiley & Sons. Inc. 3 pages (cover, copyright, p. 442).
Lunn, Colin, “The Essence of Analog Electronics,” Essence of Engineering. Copyright 1997 by Prentice Hall Europe. 6 pgs. (cover, copyright, 78-79, 210-211).

Affiliated with

Also associated with

Rating

Reducing coupled noise in pseudo-differential signaling systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reducing coupled noise in pseudo-differential signaling systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reducing coupled noise in pseudo-differential signaling systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3691823