Patents Assigned to International Communication Systems Corporation
  • Facsimile message encryption system
    Patent number: 5159630
    Abstract: A system for maintaining the security of information transmitted between facsimile machines includes a transmitting/receiving facsimile machine for receiving input sheets having an encryption zone; an image sensor for detecting the encryption zones; an encryption device for scrambling messages that appear within an encryption zone. Further the system includes means for sensing encryption zones on transmitted messages and for decoding messages that have been scrambled within the encryption zones.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: October 27, 1992
    Assignee: International Communication Systems Corporation
    Inventors: Ling-Yuan Tseng, Min-Chih Hsuan, Sheng-Wen Hong