Method for initiating navigation guidance in a distributed communications system
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United States of America Patent
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Aug 26, 2008
Grant Date -
Aug 17, 2006
app pub date -
Feb 14, 2005
filing date -
Feb 14, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A method is provided for improved navigation guidance in a portable navigation device (104) having a first navigation operating mode (302) for requesting (318, 324) and receiving (326, 334) routelet data and navigation route data and operating in accordance with the routelet data (332) and a second operation navigation mode (304) for operating in accordance with the navigation route data (338). The method includes in the first navigation operating mode (302), the steps of transmitting a routelet request (318) comprising location data, speed data and direction data, the location, speed and direction data determined (312, 314 316) in response to a present location, a present speed and a present direction of travel, respectively, of the portable navigation device (104), receiving routelet data (326) and operating in accordance with the received routelet data (332).
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