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Entry system

  • US 4,206,491 A
  • Filed: 03/30/1979
  • Issued: 06/03/1980
  • Est. Priority Date: 08/03/1977
  • Status: Expired due to Term
First Claim
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1. A control system comprising:

  • a control station including an entry module which is responsive to manual inputs and has a plurality of juxtaposed locations each capable of providing an electrical signal, particular series of which form signal sequences with each individual electrical signal being identifiable with a particular one of such locations;

    an electrical signal processor for providing a processor output signal in response to any preselected signal sequence from the entry module, the processor including,means for retaining a base code as a first preselected code, and for comparing a signal sequence produced at the entry module with the base code, and for providing a processor output signal each time a signal sequence matches the base code which is permanently incorporated into the base code retaining means and is incapable of modification or elimination by signals from the entry module, andmeans for retaining a convenience code as a second preselected code, and for comparing a signal sequence produced at the entry module with the convenience code, and for providing a processor output signal each time a signal sequence matches the convenience code which is incorporated into the convenience code retaining means from the entry module alone by entering in order the base code followed by a manual input from at least one preselected location at the entry module and finally a series of manual inputs arbitrarily selected by the operator to become the convenience code;

    amplification means for increasing the power of the processor output signal; and

    means responsive to amplification means for controlling the operability of an apparatus used in combination with the control system.

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