Communications system with minimum error cryptographic...

Cryptography – Video cryptography – Video electric signal modification

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C726S022000

Reexamination Certificate

active

07620181

ABSTRACT:
A synchronized communications system permits resynchronization in late-entry or fade-recovery conditions. A plurality of communications devices are operative for communicating in a synchronized, encrypted communications channel between each other. At least one of the communications devices is operative for continuously transmitting a resynchronization header that includes a start-of-message field that includes voice or data message information type, a message indicator field, a synchronization check field, a first error correction field computed over the start-of-message/message indicator/synchronization fields, a frame index field and a second error correction field computed on the frame index field. Receivers monitor the channel to decode these headers to perform late-entry or fade recovery.

REFERENCES:
patent: 4757536 (1988-07-01), Szczutkowski et al.
patent: 4803726 (1989-02-01), Levine et al.
patent: 4817146 (1989-03-01), Szczutkowski et al.
patent: 4977596 (1990-12-01), Maestas et al.
patent: 5060266 (1991-10-01), Dent
patent: 5081679 (1992-01-01), Dent
patent: 5369706 (1994-11-01), Latka
patent: 5784362 (1998-07-01), Turina
patent: 5892924 (1999-04-01), Lyon et al.
patent: 6018530 (2000-01-01), Chakravorty
patent: 6108421 (2000-08-01), Kurdziel et al.
patent: 6178448 (2001-01-01), Gray et al.
patent: 6216183 (2001-04-01), Rawlins
patent: 6249582 (2001-06-01), Gilley
patent: 6977896 (2005-12-01), Kobayashi
patent: 7185229 (2007-02-01), Cromer et al.
patent: 7406526 (2008-07-01), Benchetrit et al.
patent: 7406533 (2008-07-01), Li et al.
patent: 2002/0159598 (2002-10-01), Rubinstein et al.
patent: 2003/0131233 (2003-07-01), Garstin et al.
patent: 2003/0188148 (2003-10-01), Logalbo et al.
patent: 2003/0206538 (2003-11-01), Rezaiifar et al.
patent: 2004/0139336 (2004-07-01), McLean et al.
patent: 2006/0056435 (2006-03-01), Biran et al.
patent: 2007/0162609 (2007-07-01), Pope et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Communications system with minimum error cryptographic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Communications system with minimum error cryptographic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communications system with minimum error cryptographic... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4100232

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.