1
Todd V Townsend, Thomas Streenan: Apparatus for testing subscriber carrier systems. Lynch Communication Systems, Weissenberger and Peterson, January 3, 1984: US04424421 (20 worldwide citation)

A telephone subscriber testing system is disclosed in which all tests may be performed from a central office. A central office test device is connected to the central office by a separate telephone line with a telephone number of its own. Moreover, a dedicated command channel connects the office tes ...


2
Paul J Lima, Todd V Townsend: Automatic span line switch. Lynch Communication Systems, Phillips Moore Weissenberger Lempio & Strabala, September 28, 1976: US03983340 (12 worldwide citation)

An automatic span line switch for PCM communication lines is disclosed which isolates alarm conditions to an actual span line failure, as distinguished from failures in the terminal equipment. In addition, the switch uses a specific code transmission to provide fast switching and to permit identific ...


3
Paul J Lima, Todd V Townsend: Method and means for detecting an outgoing failure in a bidirectional communications span and looping the same in response thereto. Lynch Communication Systems, Phillips Moore Weissenberger Lempio & Majestic, August 16, 1977: US04042794 (12 worldwide citation)

An automatic span line switch for PCM communication lines is disclosed which isolates alarm conditions to an actual span line failure, as distinguished from failures in the terminal equipment. In addition, the switch uses a specific code transmission to provide fast switching and to permit identific ...


4
Todd V Townsend: Method and means for powering telephone span lines. Lynch Communication Systems, Phillips Moore Weissenberger Lempio & Majestic, April 1, 1980: US04196320 (9 worldwide citation)

An essentially non-dissipative, strap-free, continuously adjustable power unit inherently impervious to shorts and open circuits for powering repeaters in a T1 or similar telephone span line is disclosed. The unit uses a pulse-width modulated inverter in the converter input circuit to produce a vari ...


5
R Gordon Cook, Todd V Townsend: Telephone system using pulse code modulated subscriber lines. Lynch Communication Systems, Harry G Weissenberger, June 1, 1982: US04333175 (9 worldwide citation)

In an all-digital telephone system for communication between a central office and widely scattered subscriber locations, means are disclosed for carrying digital service from the central office to various distribution locations over T1-type equipment and from the distribution locations to subscriber ...


6
Todd V Townsend, Sergey Lyusin: Method and apparatus for interference reduction in a positioning system. Thales Navigation, Lowe Hauptman Gilman & Berner, September 7, 2004: US06788251 (6 worldwide citation)

Embodiments of the present invention relate to a method and apparatus for reducing interference in a positioning system. According to one or more embodiments of the present invention, the receiver in a conventional positioning system is configured to communicate with a terrestrial broadcast station. ...


7
Calvin H Decoursey, Todd V Townsend: Receiver for pulse code multiplexed signals. February 2, 1982: US04314368 (3 worldwide citation)

Simple and reliable decoding of T-1 type pulse code information is achieved by combining a fast-acting recirculating frame recovery circuit with a simplified signal output register. The frame recovery circuit uses a recirculating 386-bit control word in which all positions which cannot be the main-f ...


8
Calvin H Decoursey, Todd V Townsend: PCM encoder with variable set-up intervals. Lynch Communication Systems, Phillips Moore Weissnberger Lempio & Majestic, April 1, 1980: US04196421 (3 worldwide citation)

Conventional PCM encoders are made capable of handling a much larger number of telephone channels than normally possible by varying the set-up interval of the encoder in accordance with the maximum signal level to be set up.


9
Todd V Townsend, Sergey Lyusin: Method and apparatus for interference reduction in a positioning system. Kenneth M Berner, Lowe Hauptman Gilman & Berner, January 8, 2004: US20040004570-A1

Embodiments of the present invention relate to a method and apparatus for reducing interference in a positioning system. According to one or more embodiments of the present invention, the receiver in a conventional positioning system is configured to communicate with a terrestrial broadcast station. ...