Code learning system for a movable barrier operator

  • US 5,751,224 A
  • Filed: 05/17/1995
  • Issued: 05/12/1998
  • Est. Priority Date: 05/17/1995
  • Status: Expired due to Term
First Claim
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1. A barrier operator for moving a movable barrier, comprising:

  • an electric motor;

    a transmission system connectable to the electric motor for providing mechanical drive to the movable barrier;

    a radio frequency receiver;

    a decoder coupled to receive a demodulated signal from the radio frequency receiver;

    means for recognizing a learn mode code received by the radio frequency receiver and producing a learn code enable signal in response thereto; and

    means operative for a predetermined period of time after the reception of a learn mode code for storing a security code received by the radio receiver subsequent to the learn enable code having been received.

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