×

Code-controlled detection and function actuating system

  • US 4,006,316 A
  • Filed: 10/28/1975
  • Issued: 02/01/1977
  • Est. Priority Date: 08/12/1974
  • Status: Expired due to Term
First Claim
Patent Images

1. A system for screening incoming signals to separate acceptable signals from unacceptable signals and to apply the acceptable signals to a function-generating means comprising:

  • a signal transmitter, a signal receiver including a signalling means and a function-generating means in alternative normally-closed circuit with said transmitter, and a sensing means for opening the circuit to said signalling means and closing the circuit to said function-generating means upon passage to said sensing means of an initial signal from said transmitter;

    a detector and decoding means, operative when the circuit between said signal transmitter and said function-generating means is closed, for separating selected transmitted signals from unselected transmitted signals by filtering out the unselected signals, and serially converting the selected signals into data bits representing digits;

    a memory means comprising a main memory and an auxiliary memory, each adapted to serially pass digit-forming data bits therethrough, said auxiliary memory receiving data bits from said detector and decoding means;

    a programming means for directly and selectively programming said main memory with selected digits;

    a comparator means for comparing the output of said auxiliary memory with the output of said main memory to obtain an acceptable signal when said outputs match;

    and means for transmitting said acceptable signal to said function-generating means.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×