Interface for a secure fax transmission system with encrypting and decrypting
CA 2069774 A1 · Owner: Ross, Jay B. · Inventors: Ross, Jay B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A secure facsimile interface includes a main CPU (30) having associated therewith a bulk memory (32) for storing transfer data between a Group 3 facsimile machine (20) and a secure encryptor/decryptor telephone unit (10) thatoperates in accordance with MIL-STD-188-161. The main CPU (30) interfaces with the Group 3 machine (20) through an The port. A TELCO simulator (42) generates the telephone signals necessary to communicate with the Group 3 machine (20) and a FAX interface (36) is operable to interface between the audioand digital domain and with the main CPU (30). An RS232 interface is connected to the encryptor/ decryptor telephone unit (10) with a bit stream processor (40) operable to …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 28, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.