1
Leonid Sheynblat, Norman F Krasner: Method and apparatus for providing location-based information via a computer network. Snaptrack, Philip Wadsworth, Charles Brown, Bruce W Greenhaus, January 13, 2004: US06677894 (558 worldwide citation)


Methods and apparatuses for distributing location-based information (i.e., information specific to a client's location or a location of interest to the client) to a client, which may be a mobile SPS receiver, via the Internet and in particular, the World-Wide Web. The client provides informatio ...


2
Norman F Krasner: Method for open loop tracking GPS signals. Qualcomm, Bruce W Greenhalls, Charles Brown, Philip Wadsworth, October 14, 2003: US06633255 (184 worldwide citation)


Method and apparatuses for receiving and tracking satellite signals in a highly sensitive and accurate receiver. In one aspect of the invention an exemplary method includes generating a set of at least three indicators based on processing a portion of a satellite positioning system signal received b ...


3
Gurkanwal Singh Sahota: System and method for power control calibration and a wireless communication device. Qualcomm Incorporated, Philip Wadsworth, Charles Brown, Donald Kordich, November 16, 2004: US06819938 (147 worldwide citation)


A technique for calibrating the open-loop transmit power of a wireless communication device overcomes the inherent nonlinearities in the gain control input of a variable gain amplifier (VGA). In one embodiment, a feedback circuit generates a signal indicative of the transmit power. This signal is co ...


4
Norman F Krasner: GPS receiver and method for processing GPS signals. Snaptrack Incorporated, Philip Wadsworth, Charles Brown, Bruce Greenhaus, April 20, 2004: US06725159 (145 worldwide citation)


A global positioning system (GPS) receiver has first circuitry for receiving and processing pseudorandom sequences transmitted by a number of GPS satellites. The first circuitry is configured to perform conventional correlation operations on the received pseudorandom sequences to determine pseudoran ...


5
Anthony Mauro, Norman Krasner: Directly acquiring precision code GPS signals. Qualcomm Incorporated, Philip Wadsworth, Charles Brown, Richard Bachand, February 15, 2005: US06856282 (143 worldwide citation)


In general, the invention is directed to techniques for directly acquiring P-codes without first acquiring C/A-codes. For example, in one embodiment, a system comprises an assist server to track a P-code signal from a Global Positioning System (GPS) satellite and generate acquisition assistance info ...


6
Peter Gaal, Alkinoos Vayanos: Method and apparatus providing improved position estimate based on an initial coarse position estimate. Qualcomm Incorporated, Philip Wadsworth, Charles Brown, Bruce W Greenhaus, May 27, 2003: US06570530 (139 worldwide citation)


Techniques for determining the location of a device based on an initial coarse position estimate for the device, which is derived based on initial (less accurate) estimates of the position of a plurality of transmitters. In one method, the coarse position estimate for the device and revised (more ac ...


7
Norman Krasner: Calibration and correction system for satellite position location systems. Qualcomm Incorporated, Philip Wadsworth, Charles Brown, Richard Bachand, November 9, 2004: US06816111 (134 worldwide citation)


To provide accurate and quick position measurements in a practical mobile position location system, the GPS receiver is calibrated, a frequency error in the next time period is predicted using a first frequency locked to an externally transmitted signal, and a second frequency is generated by a GPS ...


8
Parag Agashe, Giovanni Vannucci: Apparatus, method, and system of transferring correction information. Qualcomm, Lucent Technologies, Philip Wadsworth, Charles Brown, Richard Bachand, August 17, 2004: US06778885 (133 worldwide citation)


Apparatuses, methods, and systems of transferring correction information are described. In certain implementations, correction factors relate to stored or calculated values, and a correspondence between a correction factor and a value is indicated by a predetermined order of the correction factors. ...


9
Dominic Farmer, Laszlo Leirer: System for setting coarse GPS time in a mobile station within an asynchronous wireless network. Snaptrack Incorporated, Philip Wadsworth, Charles Brown, Donald Kordich, September 7, 2004: US06788249 (132 worldwide citation)


A method and apparatus for setting coarse GPS time in a GPS receiver in a mobile station (MS) that is communicating with a base station and a position determining entity (PDE). The MS requests an assistance message from the PDE that includes a sequence of predicted navigation bits, including a predi ...


10
Geoffrey Shippee: Shared receive path for simultaneous received signals. QUALCOMM Incorporated, Kam T Tam, Charles Brown, Thomas R Rouse, August 21, 2007: US07260416 (129 worldwide citation)


A method and apparatus are disclosed for a wireless communication device to simultaneously receive at least two signals. Two receiver portions are provided in the wireless communication device. A first receiver portion is configured to receive a first communication signal. A second receiver portion ...



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