Communications: electrical – Selective – Intelligence comparison for controlling
Reexamination Certificate
2005-08-31
2010-06-22
Brown, Vernal U (Department: 2612)
Communications: electrical
Selective
Intelligence comparison for controlling
C340S005250, C340S005640, C340S005710, C340S870030
Reexamination Certificate
active
07741951
ABSTRACT:
A barrier movement operator system having a receiver for receiving, learning and responding to transmitted rolling code type access codes; at least one trained transmitter for operating the system by transmitting a rolling code type access code to the receiver; at least one learning transmitter for learning the rolling code type access code from said trained transmitter in order to operate the system; a controller for evaluating the relationship between the learning transmitter rolling type access code and the trained transmitter rolling type access code; and a device for providing a barrier movement in response to access codes received by the receiver. The barrier movement operator provides a method of learning valid security codes by a security code receiver comprising the steps of receiving a first security code, then within a predetermined period of time receiving a second security code, having a predetermined relationship to the first security code; and storing a representation of the second security code as a valid security code.
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Brown Vernal U
Fitch Even Tabin & Flannery
The Chamberlain Group, Inc.
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