Patent ID: 7173514
Filing Date: 2007-02-06
Classification: E05D,E05F,E05Y,G07C

Abstract:
1. A system for controlling a position of a barrier comprising: at least one radio frequency transmitter having a user-changeable serial number associated with each radio frequency transmission corresponding to each transmitter, said transmitter configured for remote use with the system; and an operator comprising: a radio frequency receiver adapted to receive a first radio frequency transmission from a first radio frequency transmitter, and adapted to receive a second radio frequency transmission from a second radio frequency transmitter having a second user-changeable serial number, wherein each said radio-frequency transmitter provides a function button that when actuated in a first way performs a predetermined function and when actuated a second way changes said user-changeable serial number, each said radio-frequency transmitter including an encoder which is initially programmed with a manufacturer's key and a current serial number, and wherein a first actuation of said function button in said second way for a first predetermined period of time causes said encoder to encrypt said current serial number with said manufacturer's key to generate said new serial number, and wherein subsequent actuations of said function button in said second way requires a predetermined sequence of function button actuations to encrypt said current serial number with said manufacturer's key to generate said new serial number; a memory comprising a plurality of storage locations; and a controller connected to said radio frequency receiver, said controller comparing any radio frequency transmissions received from said at least one transmitter with learned serial numbers stored in said plurality of storage locations, wherein said controller enables movement of the barrier when any one of said radio frequency transmissions matches any one of said learned serial numbers stored in said plurality of storage locations.