Filter driven DC-free codes

Details Filter driven DC-free codes Filter driven DC-free codes

2007-11-20

2007-11-20

Young, Brian (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from minimum d.c. level codes

Reexamination Certificate

active

10765431

ABSTRACT:
An encoder for encoding a communication signal includes a signal buffer to buffer data associated with the communication signal. A DC-Check circuit to compute a metric as a function of the data. A DC tracking block to generate a flip signal as a function of the metric, the flip signal having a flip state and a nonflip state. A flip unit, responsive to the flip signal, to control a flip bit of an output of the signal buffer such that an average DC value of the data approaches zero.

REFERENCES:
patent: 4027335 (1977-05-01), Miller
patent: 4775985 (1988-10-01), Busby
patent: 4833471 (1989-05-01), Tokuume et al.
patent: 5198813 (1993-03-01), Iaozaki
patent: 5341134 (1994-08-01), Benjauthrit
patent: 5469162 (1995-11-01), Chaki et al.
patent: 5477222 (1995-12-01), Kahlman et al.
patent: 5506581 (1996-04-01), Ino et al.
patent: 5508701 (1996-04-01), Nose et al.
patent: 5608397 (1997-03-01), Soljanin
patent: 5699061 (1997-12-01), Shimpuku
patent: 5854596 (1998-12-01), Schouhamer Immink
patent: 5929794 (1999-07-01), Hayakawa et al.
patent: 6175317 (2001-01-01), Ordentlich et al.
patent: 6265994 (2001-07-01), Kahlman
patent: 2005/0244003 (2005-11-01), Nagai et al.

Affiliated with

Also associated with

Rating

Filter driven DC-free codes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filter driven DC-free codes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter driven DC-free codes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3891408