1
Gary W Grube, Marc C Naddell, Mark L Shaughnessy: Method for providing communication services based on geographic location. Motorola, Daniel C Crilly, Timothy W Markison, July 7, 1998: US05778304 (315 worldwide citation)

Communication services can be controlled within geographic areas (126) by a communication resource controller (101). This occurs, when the communication resource controller (101) receives the location of a particular communication unit (102, 103) and a particular service request. Having this informa ...


2
Kenneth B Borgelt, Glenn N Mayer: Method for generating a password using public key cryptography. Motorola, Timothy W Markison, James A Coffing, March 14, 1995: US05398285 (173 worldwide citation)

In a communication system, a password that enables an embedded software program within a base station can be generated using public key cryptography in the following manner. A system controller (103) obtains a unique identification code and an embedded software code for the base station (101). Once ...


3
Paul H Gailus: Direct conversion FM receiver. Motorola, Timothy W Markison, Steven G Parmelee, Joseph P Krause, March 26, 1991: US05003621 (151 worldwide citation)

A direct conversion FM receiver that comprises a quadrature mixer, an A to D converter, a digital demodulator, a digital phase lock loop, and frequency offset setting means is disclosed. The quadrature mixer receives FM signals and mixes them with a local oscillator signal to produce an analog in-ph ...


4
Kevin Gardeck, Kevin M Cutts: Method for updating encryption key information in communication units. Motorola, Timothy W Markison, June 28, 1994: US05325432 (133 worldwide citation)

Within a communication system, an encryption controller receives unit identification information from a plurality of encrypting/decrypting communication units. For any individual communication unit, the encryption controller uses the unit identification associated with that transmitting communicatio ...


5
Ahmadreza: RF antenna coupling structure. Broadcom, Garlick Harrison & Markison, Timothy W Markison, July 19, 2005: US06919858 (118 worldwide citation)

An RF antenna coupling structure includes a first transformer, a second transformer, and a transformer balun. The first transformer includes a primary winding and a secondary winding, wherein the primary winding of the first transformer is operably coupled to a power amplifier, and wherein the secon ...


6
Gary Grube, Jaime A Borras, Richard Comroe: Method for a communication unit to operate in either a trunking or a cellular communication system. Motorola, Timothy W Markison, December 6, 1994: US05371898 (113 worldwide citation)

A communication unit may operate in either a trunking communication system and a cellular communication system when the coverage areas of each system overlap. Typically, the communication unit is affiliated with the trunking communication system and operates normally therein. When a call is received ...


7
Gary W Grube, Timothy W Markison, Matthew A Pendleton, Mathew A Rybicki: Method and apparatus for providing a communication system infrastructure. Motorola, Timothy W Markison, Daniel C Crilly, July 2, 1996: US05533008 (113 worldwide citation)

In a communication system utilizing DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), infrastructure control channels are established in the following manner. Having obtained a plurality of site bit loading tables, the primary site (102) generates a control c ...


8
Vafa James Rakshani, Ahmadreza, Maryam Rofougaran, Frederic Christian Marc Hayem, Claude G Hayek, Nelson R Sollenberger: Adjustable antenna interface and applications thereof. Broadcom Corporation, Garlick Harrison & Markison, Timothy W Markison, Shayne X Short, March 1, 2011: US07899410 (112 worldwide citation)

An adjustable antenna interface includes a single-ended to differential conversion circuit, an adjustable impedance matching circuit, an RF differential switch, and an input. The single-ended to differential conversion circuit converts inbound RF signals from single-ended signals to differential sig ...


9
Lawrence F Cygan, Paul H Gailus, William J Turney: Method for a transmitter to compensate for varying loading without an isolator. Motorola, Timothy W Markison, June 6, 1995: US05423082 (110 worldwide citation)

A transmitter that includes an amplifying element, an antenna, a gain stage, and a closed loop feedback may compensate for varying antenna loads without an isolator. This may be accomplished by determining the effects of the varying loading on overall loop gain. Knowing the effects, the transmitter ...


10
Gary Grube, Richard Comroe, Robert Furtaw, Mark Shaughnessy: Mutli-site group dispatch call method. Motorola, Timothy W Markison, February 7, 1995: US05387905 (110 worldwide citation)

Processing of dispatch calls in a multi-site communication system begins when a source communication unit initiates a request for a dispatch call. The request is routed to a controller which assigns a controlled device to support the request. In addition, the controller identifies the destination co ...