Patents by Inventor Bradford L. Farris
Bradford L. Farris has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8633797Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: September 26, 2012Date of Patent: January 21, 2014Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 8284021Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: July 22, 2008Date of Patent: October 9, 2012Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 8233625Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: July 22, 2008Date of Patent: July 31, 2012Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 8194856Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: July 22, 2008Date of Patent: June 5, 2012Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 7623663Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: December 21, 2005Date of Patent: November 24, 2009Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 7492898Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: July 2, 2004Date of Patent: February 17, 2009Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Publication number: 20090021348Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: ApplicationFiled: July 22, 2008Publication date: January 22, 2009Applicant: The Chamberlain Group, Inc.Inventors: Bradford L. FARRIS, James J. Fitzgibbon
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Publication number: 20090016530Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: ApplicationFiled: July 22, 2008Publication date: January 15, 2009Applicant: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Publication number: 20080297370Abstract: A rolling coda transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling cede. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and roiling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: ApplicationFiled: July 22, 2008Publication date: December 4, 2008Applicant: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 7412056Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: September 29, 2003Date of Patent: August 12, 2008Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 6980655Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: October 17, 2001Date of Patent: December 27, 2005Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Publication number: 20040243813Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: ApplicationFiled: July 2, 2004Publication date: December 2, 2004Applicant: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 6810123Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: August 9, 2002Date of Patent: October 26, 2004Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Publication number: 20040066936Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: ApplicationFiled: September 29, 2003Publication date: April 8, 2004Applicant: The Chamberlain Group, Ltd.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 6690796Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: January 21, 2000Date of Patent: February 10, 2004Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Publication number: 20020191794Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: ApplicationFiled: August 9, 2002Publication date: December 19, 2002Applicant: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Publication number: 20020034303Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: ApplicationFiled: October 17, 2001Publication date: March 21, 2002Applicant: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 6181255Abstract: A radio frequency transmitter for use in generating coded commands learned from received coded radio frequency signals. An transceiver circuit including a switching element and a tunable filter tuning element is coupled to a programmable controller, e.g, a microprocessor. The programmable controller operates the switching element of said transceiver circuit in either a first or a second mode for receiving or transmitting coded radio frequency signals, respectively via an antenna coupled to the tuning element. The switching element is operable in the first mode to demodulate received coded radio frequency signals, and the programmable controller learns the received coded radio frequency signals and stores coded commands in memory. In the second mode of operation, an oscillator is modulated by generated coded signals from the programmable controller using the stored coded commands from memory.Type: GrantFiled: August 8, 1997Date of Patent: January 30, 2001Assignee: The Chamberlain Group, Inc.Inventors: Terence E. Crimmins, Bradford L. Farris, Paul E. Wanis
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Patent number: 6154544Abstract: A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and determining that the signal has emanated from an authorized transmitter, a signal is generated to actuate an electric motor to open or close a movable barrier.Type: GrantFiled: June 11, 1997Date of Patent: November 28, 2000Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon
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Patent number: 6025785Abstract: A barrier movement actuating receiver learns and responds to fixed code type access codes and rolling code type access code wherein the actuating receiver includes a programmer for programming the actuating receiver to accept fixed or rolling type access codes and includes a learning mode for enabling the programmer to add valid access codes to a memory. The receiver further includes a controller for identifying the type of access code received and a revised access code routine for learning both fixed codes and rolling codes. The controller can be set to execute the access code routine corresponding to the type of access code identified. After the first code is learned, all subsequent codes learned must be of the same type until the programmer is re-enabled.Type: GrantFiled: April 24, 1996Date of Patent: February 15, 2000Assignee: The Chamberlain Group, Inc.Inventors: Bradford L. Farris, James J. Fitzgibbon, Paul E. Wanis