Adaptive mobile device navigation
First Claim
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1. A computer-implemented method, comprising:
- storing a position in memory;
receiving sensor data related to movement of a device;
detecting a turn in the movement of the device based on the received sensor data;
comparing the sensor data to map data corresponding to the stored position;
identifying a candidate location defined by the map data based on an estimated current device location and the detected turn, where identifying the candidate location comprises identifying that the candidate location defined by the map data has characteristics consistent with characteristics of the detected turn;
determining the estimated current device location, the determination being based at least in part on the stored position, the received sensor data, and an interpretation of the received sensor data as corresponding to movement along at least one pathway defined by the map data;
prompting the user for confirmation that the estimated current device location corresponds to an actual physical location of the device; and
updating the position stored in memory with the estimated current device location when the user confirms that the estimated current device location corresponds to the actual physical location of the device.
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Abstract
Adaptive mobile device navigation system, methods, and apparatus provide location information for a mobile device performing location estimation using dead reckoning. Multiple estimation modes can be selected including a mode for restricting measured movements to surrounding streets. Updated location fixes can be obtained through turn comparison with surrounding map information and user feedback. User feedback prompts can include photographs having geographic tag information corresponding to locations near an estimated location of the device.
863 Citations
24 Claims
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1. A computer-implemented method, comprising:
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storing a position in memory; receiving sensor data related to movement of a device; detecting a turn in the movement of the device based on the received sensor data; comparing the sensor data to map data corresponding to the stored position; identifying a candidate location defined by the map data based on an estimated current device location and the detected turn, where identifying the candidate location comprises identifying that the candidate location defined by the map data has characteristics consistent with characteristics of the detected turn; determining the estimated current device location, the determination being based at least in part on the stored position, the received sensor data, and an interpretation of the received sensor data as corresponding to movement along at least one pathway defined by the map data; prompting the user for confirmation that the estimated current device location corresponds to an actual physical location of the device; and updating the position stored in memory with the estimated current device location when the user confirms that the estimated current device location corresponds to the actual physical location of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A non-transitory computer program product, encoded on a computer readable medium, operable to cause data processing apparatus to perform operations comprising:
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storing a position in memory; receiving sensor data related to movement of a device; detecting a turn in the movement of the device based on the received sensor data; comparing the sensor data to map data corresponding to the stored position; identifying a candidate location defined by the map data based on an estimated current device location and the detected turn, where identifying the candidate location comprises identifying that the candidate location defined by the map data has characteristics consistent with characteristics of the detected turn; determining the estimated current device location, the determination being based at least in part on the stored position, received sensor data, and an interpretation of the received sensor data as corresponding to movement along at least one pathway defined by the map data; prompting the user for confirmation that the estimated current device location corresponds to an actual physical location of the device; and updating the position stored in memory with the estimated current device location when the user confirms that the estimated current device location corresponds to the actual physical location of the device. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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one or more processors; and a computer program product, encoded on a computer readable medium, operable to cause data processing apparatus to perform operations comprising; storing a position in memory; receiving sensor data related to movement of a device; detecting a turn in the movement of the device based on the received sensor data; comparing the sensor data to map data corresponding to the stored position; identifying a candidate location defined by the map data based on an estimated current device location and the detected turn, where identifying the candidate location comprises identifying that the candidate location defined by the map data has characteristics consistent with characteristics of the detected turn; determining the estimated current device location, the determination being based at least in part on the stored position, received sensor data, and an interpretation of the received sensor data as corresponding to movement along at least one pathway defined by the map data; prompting the user for confirmation that the estimated current device location corresponds to an actual physical location of the device; and updating the position stored in memory with the estimated current device location when the user confirms that the estimated current device location corresponds to the actual physical location of the device. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification