Switching matrix

Details Switching matrix Switching matrix

1972-11-22

1998-10-06

Barron, Jr., Gilberto

Cryptography

Electric signal modification

Having production of printed copy

342 45, 380 28, H04L 906

Patent

active

058189408

ABSTRACT:
A deciphering unit having input and output matrices connected to a master ift register to permit flexible access to its stages. The output matrix allows selection of four register positions in the master shift register from which data is fed to a correspondence generator where it is partially descrambled. Subsequently, the input matrix allows selection of four input register positions for the partially descrambled data, and one input register position for serial key shift register data. A comparison matrix selects eight bit positions to allow comparison of the descrambled master shift register data with a predetermined eight bit word. Upon favorable comparison a four bit word is transmitted to a base interrogating station for identification. Also, the same apparatus can be used for enciphering by shifting the data in the master shift register in a reverse manner.

REFERENCES:
patent: 2912486 (1959-11-01), Shanahan
patent: 2958848 (1960-11-01), Garwin
patent: 3341846 (1967-09-01), McMurren et al.
patent: 3364468 (1968-01-01), Haibt et al.
patent: 3500406 (1970-03-01), Parker
patent: 3538497 (1970-11-01), Harmon
patent: 3576569 (1971-04-01), Watson
patent: 3680050 (1972-07-01), Griffin
patent: 3680090 (1972-07-01), Bishop
patent: 3715750 (1973-02-01), Bishop

Affiliated with

Also associated with

Rating

Switching matrix does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-87734