Cryptography – Key management – Having particular key generator
Patent
1989-02-21
1990-03-27
Buczinski, Stephen C.
Cryptography
Key management
Having particular key generator
355201, 380 54, H04N 7167, H04N 144, G09C 500
Patent
active
049127616
ABSTRACT:
A security method and apparatus for use in providing an "invisible envelope" for facsimile transmission thereby avoiding the casual reading of documents by persons interposed between the receiver of the transmission and the ultimate designated recipient thereof. Each page of the document is pattern divided into two portions which are individually unreadable in an easy and straightforward manner. The two portions are sent in sequence (i.e. at different times) and then the original document is reconsitituted at the receiving end by the designated recipient employing a transparency overlay process with the two portions. The patterning at the transmitting end may be accomplished by an optical filtering process or may be computer generated as by modifying word processing software or by a separate program manipulating a pre-input document to produce the two portions for printing and transmission. The HideaFAX.TM. process of this invention is applicable to conventional FAX machines without modification. It can also be built into a conventional FAX machine and can be easily added to the software of PC-fax or KeyFAX.TM. systems for inclusion therein.
REFERENCES:
patent: 2417163 (1947-03-01), Horst
patent: 3279095 (1966-10-01), Carlson
patent: 4459611 (1984-07-01), Arai et al.
patent: 4586711 (1986-05-01), Winters
patent: 4682954 (1987-07-01), Cook
patent: 4776013 (1988-10-01), Kafri
patent: 4786941 (1988-11-01), Regan
Iggulden Jerry R.
Streck Donald A.
Tan Jeanette C.
Buczinski Stephen C.
Iggulden Jerry R.
Streck Donald A.
Streck Donald A.
LandOfFree
Security facsimile systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Security facsimile systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security facsimile systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1656966