Automatic resumption of route guidance in vehicle navigation system
First Claim
1. In a navigation system for a vehicle, a method of providing route guidance to a user, the method comprising:
- outputting information to the user for navigation of the vehicle;
detecting an impending power-down of the navigation system; and
in response to detecting the impending power-down, deciding before the power down occurs, whether to resume said outputting following a next power up of the navigation system based on a current position of the vehicle.
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Accused Products
Abstract
An on-board automobile navigation system provides route guidance instructions to a user. The system detects a power-down of the vehicle and, in response, determines whether to resume route guidance in response to the next start-up of the vehicle. This determination is made prior to powering down the system. The determination is based on the current position of the vehicle and the computed route. If a determination was made to resume guidance after start-up, the selected destination and the computed route are saved in memory before powering down the system. If a determination was made to resume guidance, then in response to the next start-up of the vehicle, the selected destination and the computed route of the vehicle are recalled from memory, and route guidance is resumed from the current position of the vehicle.
68 Citations
32 Claims
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1. In a navigation system for a vehicle, a method of providing route guidance to a user, the method comprising:
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outputting information to the user for navigation of the vehicle; detecting an impending power-down of the navigation system; and in response to detecting the impending power-down, deciding before the power down occurs, whether to resume said outputting following a next power up of the navigation system based on a current position of the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 22, 23)
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7. In a navigation system for an automobile, a method of providing route guidance to a user of the navigation system, the method comprising:
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performing a route guidance routine, the route guidance routine including providing guidance information to the user; receiving a power-down signal corresponding to an impending powering down of the navigation system; in response to the power-down signal, determining whether to resume the route guidance routine in response to a next powering up of the automobile based on a current position of the automobile and a selected destination; storing route information in a memory before the powering down of the navigation system if a determination was made in the determining step to resume the guidance routine, the route information including a selected destination and a current route of the automobile; and if a determination was made in the determining step to resume the guidance routine, then in response to the next powering up of the automobile; recalling the selected destination and the current route of the automobile from the memory; and resuming the route guidance routine. - View Dependent Claims (8, 9, 10, 24)
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11. An apparatus for providing route guidance to a user of a navigation system for a vehicle, the apparatus comprising:
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means for detecting an impending powering down of the vehicle; and means for determining, in response to detecting the impending powering down of the vehicle and before a next powering down of the navigation system, whether to resume a route guidance routine in response to a next powering up of the vehicle based on a current position of the vehicle and a user-selected destination. - View Dependent Claims (12, 13, 14, 15, 16, 25, 26)
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17. A navigation system for a vehicle, comprising:
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a processor; a first storage unit coupled to the processor; and a second storage unit coupled to the processor, the second storage unit having computer instructions stored therein which, when executed by the processor, cause the processor to; perform a guidance routine including providing guidance information to the user, the guidance routine including providing navigation instructions to a user of the navigation system; detect an impending power-down of the navigation system; in response to detection of the impending power-down, decide whether to resume the guidance routine following a next power-up of the navigation system based on a current position of the vehicle and a user-selected destination; and store the user-selected destination and a computed route of the vehicle in the first memory before the power-down of the navigation system occurs if a decision was made to resume the guidance routine. - View Dependent Claims (18, 19, 20, 21)
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27. In an automobile navigation system, a method of assisting a driver of an automobile in navigating, the method comprising:
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outputting route guidance information based on a computed route; detecting an impending power-down of the navigation system; and in response to detecting the impending power-down, deciding before the power-down occurs, whether to resume said outputting in response to a next power-up of the navigation system, based on a distance between a current position of the automobile and a user-selected destination. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification