Portable navigation device with integrated GPS and dead reckoning capabilities
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United States of America Patent
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Feb 1, 2005
Grant Date -
N/A
app pub date -
Jun 28, 2002
filing date -
Jun 28, 2002
priority date (Note) -
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Abstract
Apparatus, systems and methods are provided for portable navigation devices with various integrated positioning functionality. The apparatus includes a portable electronic device having a processor in communication with a memory. The memory is adapted to store navigation related data. The navigation related data includes cartographic data including a number of locations and data indicative of thoroughfares of a plurality of types connecting certain ones of the locations. The portable electronic device includes a GPS receiver adapted to communicate with the memory and processor. And, the portable electronic device includes a dead reckoning component, including a rate gyro, pedometer, and/or accelerometer adapted to communicate to memory and processor.
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