Patents Assigned to Syntex Computer Systems, Inc.
  • Non-volatile reprogrammable ram cartridge
    Patent number: 4620707
    Abstract: The reprogrammable RAM cartridge of the present invention is adapted for use as a reprogrammable video game. The cartridge uses an optoisolator connected in a circuit between the shield and ground lines to detect the presence of a signal indicating that the cartridge is in a programmer, rather than in a video game unit. While in the programmer, the program stored in the RAM can be changed. However, when removed from the programmer, the cartridge acts like a standard video game cartridge.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: November 4, 1986
    Assignee: Syntex Computer Systems, Inc.
    Inventor: Louis A. Lippincott