Pre-compensation for digital bit streams

Details Pre-compensation for digital bit streams Pre-compensation for digital bit streams

2007-05-29

2007-05-29

Patel, Jay K. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Antinoise or distortion

C375S295000, C375S296000

Reexamination Certificate

active

10335379

ABSTRACT:
A technique for pre-compensating a digital bit stream for distortion imposed by a transmission path includes adjusting the level of the digital bit stream on a bit-by-bit basis in a manner that simulates the effects of a filter having a transfer function that is substantially the inverse of that of the transmission path. The technique includes generating a plurality of reference levels that correspond to correcting levels of the digital bit stream and switching these levels to the transmission path at high speed in response to the current bit of the digital bit stream and at least one previous bit. When used in an automatic test system, the technique improves signal transmission and reduces jitter, therefore allowing jitter of devices under test to be measured more accurately.

REFERENCES:
patent: 4584690 (1986-04-01), Cafiero et al.
patent: 6466626 (2002-10-01), Cecchi et al.
patent: 6566891 (2003-05-01), Aggarwal et al.
patent: 6647041 (2003-11-01), Verma et al.
patent: 6690744 (2004-02-01), Hedberg
patent: 6873218 (2005-03-01), Khlat
patent: 2002/0194560 (2002-12-01), Jain et al.
patent: 2004/0096022 (2004-05-01), Zhang

Affiliated with

Also associated with

Rating

Pre-compensation for digital bit streams does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pre-compensation for digital bit streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pre-compensation for digital bit streams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3729530