Multi-function device with positioning system and shared processor
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United States of America Patent
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Sep 21, 2010
Grant Date -
Apr 23, 2009
app pub date -
Aug 5, 2008
filing date -
Nov 1, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A multi-function device with a positioning function and a real time positioning engine is disclosed. The device contains also a shared processor used by the positioning function and other functions of the device, such as a mobile radio-communication function. The positioning engine performs in real time the most computational intensive calculations of the positioning function, such as downsampling, Doppler mixing and correlation calculations. Since the received signal need not be stored, the memory requirements of the positioning function are significantly reduced if aiding data is available.
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