Navigation system and method with location-aware accuracy and/or power adjustments
First Claim
1. A method comprising:
- obtaining navigation data representative of at least an estimated current position of a navigation system receiver relative to a navigation route, the navigation route including one or more predetermined directions to arrive from the estimated current position to a destination location; and
changing at least one of;
signal processing or data processing in the navigation system receiver to provide a high accuracy setting in response to the estimated current position being within a predetermined distance of a high accuracy waypoint, the high accuracy waypoint representing a fixed geographic location along the navigation route and being determined based upon the estimated current position and a destination location, wherein the high accuracy setting corresponds to a high power draw setting of the navigation system receiver; and
changing the at least one of;
signal processing or data processing in the navigation receiver to provide a low accuracy setting in response to the estimated current position is travelling along a straight line relative to the navigation route, wherein the low accuracy setting corresponds to a low power draw setting of the navigation receiver.
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Abstract
In a navigation system and method, location-aware adjustments may be made to the accuracy and/or power of the navigation system by changing at least one setting of a navigation system receiver in response to at least one characteristic of a navigation route and/or an estimated current position of the receiver. By providing location-aware adjustments, the accuracy may be increased when a higher accuracy is desired and may be decreased when a lower accuracy is sufficient based on the receiver location. A higher accuracy setting may be used, for example, when the estimated current position of a navigation system receiver is within the vicinity of a waypoint along the navigation route and a lower accuracy setting may be used at other times to reduce power consumption. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.
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Citations
22 Claims
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1. A method comprising:
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obtaining navigation data representative of at least an estimated current position of a navigation system receiver relative to a navigation route, the navigation route including one or more predetermined directions to arrive from the estimated current position to a destination location; and changing at least one of;
signal processing or data processing in the navigation system receiver to provide a high accuracy setting in response to the estimated current position being within a predetermined distance of a high accuracy waypoint, the high accuracy waypoint representing a fixed geographic location along the navigation route and being determined based upon the estimated current position and a destination location, wherein the high accuracy setting corresponds to a high power draw setting of the navigation system receiver; andchanging the at least one of;
signal processing or data processing in the navigation receiver to provide a low accuracy setting in response to the estimated current position is travelling along a straight line relative to the navigation route, wherein the low accuracy setting corresponds to a low power draw setting of the navigation receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A navigation system receiver comprising:
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a satellite signal receiver to receive a plurality of satellite signals broadcast from a plurality of satellites, respectively; a tracker to process the satellite signals to obtain measurement data representative of measurements relative to the satellites, respectively; a navigator to process the measurement data to obtain position, velocity and time (PVT) data representative of an estimated current position, velocity and time of the navigation system receiver; and a processor to; obtain navigation data representative of at least an estimated current position of the navigation system receiver relative to a navigation route, the navigation route including one or more predetermined directions to arrive from the estimated current position to a destination location; change at least one of;
signal processing or data processing in the navigation system receiver to a high accuracy setting in response to provide the estimated current position being within a predetermined distance of a high accuracy waypoint, the high accuracy waypoint representing a fixed geographic location along the navigation route and being determined based upon the estimated current position and a destination location, wherein the high accuracy setting corresponds to a high power draw setting of the navigation system receiver; andchange the least one of;
signal processing or data processing in the navigation receiver to a low accuracy setting in response to provide the estimated current position is travelling along a straight line relative to the navigation route, wherein the low accuracy setting corresponds to a low power draw setting of the navigation receiver. - View Dependent Claims (17, 18, 19)
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20. One or more tangible non-transitory computer-readable memories including instructions stored thereon which, when executed by one or more processors, cause the computer system to perform operations comprising:
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obtain navigation data representative of at least an estimated current position of a navigation system receiver relative to a navigation route, the navigation route including one or more predetermined directions to arrive from the estimated current position to a destination location; change at least one of;
signal processing or data processing in the navigation system receiver to a high accuracy setting in response to provide the estimated current position being within a predetermined distance of a high accuracy waypoint, the high accuracy waypoint representing a fixed geographic location along the navigation route and being determined based upon the estimated current position and a destination location, wherein the high accuracy setting corresponds to a high power draw setting of the navigation system receiver; andchange the least one of;
signal processing or data processing in the navigation receiver to a low accuracy setting in response to provide the estimated current position is travelling along a straight line relative to the navigation route, wherein the low accuracy setting corresponds to a low power draw setting of the navigation receiver. - View Dependent Claims (21, 22)
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Specification