×

Information communicating apparatus and method

  • US 4,320,387 A
  • Filed: 12/19/1979
  • Issued: 03/16/1982
  • Est. Priority Date: 12/28/1978
  • Status: Expired due to Term
First Claim
Patent Images

1. An information communicating apparatus unit comprisinginput means selectively operable to generate electrical signals related to a plurality of respective information elements including a fungible information element that are desired to be input into the apparatus for communication with another compatible apparatus unitdisplay means having a plurality of display elements which are selectively energizaeable in response to input of said information element signals to provide a verifiable display of such information elements,interface processing circuit means coupled in circuit with said input means for receiving the generated electrical signals and assemble those signals to form a correspondence check signal and coupled in circuit with said display means for effecting a display of said generated signals and being operable to form a correspondence check transmission signal,signal transmission means coupled with said interface processing circuit means and operable to effect transmission of said correspondence check transmission signal to another of said apparatus units located in relatively remote relationship and to effect receipt of a correspondence check transmission signal from said other apparatus unit, andswitching logic processor circuit means coupled with said interface processing circuit means for receiving said correspondence check signal formed by signal said interface processing circuit means and and a correspondence check signal received from said other apparatus unit via said interface processing circuit means, said logic circuit means including identifier signal generation means selectively operable upon input of said correspondence check signals to form a security identifier signal for the apparatus unit and to include such security identifier signal in the correspondence check signal, signal encoding/decoding circuit means referenced to a time control base and operable to change the security identifier signal for each of successive time base periods, comparison circuit means for effecting a comparison of the correspondence check signals input thereto by saidswitching logic processor circuit means coupled with said interface processing circuit means for receiving said correspondence check signal formed by said interface processing circuit means and a correspondence check signal received from said other apparatus unit via said interface processing circuit means, said logic processor circuit means including identifier signal generation circuit means selectively operable upon input of a correspondence check signal from said interface processing circuit means to form a security identifier signal for the apparatus unit and to include such security identifier signal in the correspondence check signal, signal encoding/decoding circuit means referenced to a correspondence signal time base compatible with all apparatus units and operable to sequentially and non-repetitively change the security identifier signal component of the correspondence check signal for each of successive correspondence time periods over the life of the unit, comparison circuit means for effecting a comparison of the correspondence check signals input thereto by said interface processing circuit means and from said other apparatus unit and for forming a compared signal as to each of respective compare or non-compare conditions, second signal generation circuit means interconnected with said comparison circuit means and responsive to said compared signal for forming a transmittable store signal and causing transmission to said other apparatus unit by said interface processing circuit means in the event of a correct comparison, and to terminate the operation in the absence of comparison for assuring that only reciprocal fungible signal components are honored in each apparatus unit, and proof of possession register memory circuit means interconnected therewith to respond to said store signal and to register at least the fungible component of the correspondence check signal.

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