Sirf Technology, Inc.

Matsushita Electric Works, Ltd.

Other

Panasonic Corporation

Csr Technology Inc.

Sirf Technologies, Inc.

Chiayee Steve Chang

Ashutosh Pande

Lionel Jacques Garin

Junichi Suzuki

Ikuo Tsujimoto

Gengsheng Zhang

Hemali Vyas

Randall J Silva

Lionel Jacques Gerin

The present invention discloses a GPS system that uses call-processor intelligence to determine the mode of operation of a GPS receiver located in a GPS terminal. The modes are selected based on the availability of network facilities, the GPS information that can be acquired, or user input requirements.

GPS-based positioning system for mobile GPS terminals

A partial almanac collection system is disclosed. The partial almanac collection system includes a global positioning system ('GPS') module, and a controller in signal communication with the GPS module and the call processor, the controller instructing the GPS module to collect piecewise almanac data in response to a request from the call processor.

Partial almanac collection system

A protocol independent interface for processing, within a mobile device, protocol aiding data received at a call processor with a Global Positioning System ('GPS') interface, where the protocol aiding data is produced according to a Geolocation Server Station protocol is disclosed. The protocol independent interface may include a means for receiving, at the GPS interface, the protocol aiding data received at the call processor, means for converting the received protocol aiding data to interface data that is transparent to the Geolocation Server Station protocol, and means for passing the interface data to a GPS module.

The present invention discloses a system for determining the position of a GPS terminal. The system comprises a GPS terminal, a location aiding server, and a communications system. Messages are passed between the GPS terminal and the server, as well as within the GPS terminal, to determine the mode of operation of the GPS portion of the system. Decisions are made based on availability of aiding data and Quality of Service requirements.

Mode determination for mobile GPS terminals

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San Jose, CA, United States of America

Chiayee Steve Chang