Self-synchronous data scrambler

Details Self-synchronous data scrambler Self-synchronous data scrambler

2005-10-04

2005-10-04

Revak, Christopher (Department: 2131)

Cryptography

Communication system using cryptography

Symmetric key cryptography

C380S210000, C713S160000

Reexamination Certificate

active

06952480

ABSTRACT:
An encryption system has been provided to self-synchronously scramble communications where the receiver must recover the clock information from the data stream, such as the SONET format. To prevent jamming during initialization, or during times when no data is being transferred, flags and overhead data are scrambled, along with the payload. Timing controls to the scrambler permit this scrambler to be selectively engagable, so that the selective overhead scrambling becomes a second layer of scrambling. A method of self-synchronously scrambling the overhead in NRZ formatted communications is also provided.

REFERENCES:
patent: 3927267 (1975-12-01), Voyer et al.
patent: 4979188 (1990-12-01), Kotzin et al.
patent: 5303303 (1994-04-01), White
patent: 5355506 (1994-10-01), Mariani
patent: 5442703 (1995-08-01), Kim et al.
patent: 5444782 (1995-08-01), Adams et al.
patent: 5638448 (1997-06-01), Nguyen
patent: 5825888 (1998-10-01), Kimura et al.
patent: 5835602 (1998-11-01), Lang
patent: 5881154 (1999-03-01), Nohara et al.
patent: 6188692 (2001-02-01), Huscroft et al.
patent: WO 99/33271 (1999-01-01), None
patent: WO 99/29078 (1999-10-01), None
Whatis.com, Time-Division Multiplexing, Aug. 16, 2002, p. 1.

Affiliated with

Also associated with

Rating

Self-synchronous data scrambler does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-synchronous data scrambler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-synchronous data scrambler will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3444798