Location enabled device with power saving control and method thereof
First Claim
1. A method for saving power for an energy constrained device comprising:
- receiving a device location request for the energy constrained device;
determining a location of the energy constrained device using a device position determinator;
storing the determined location in a memory;
placing the device position determinator in a low power mode;
receiving a motion detect signal from a motion detector;
determining by the motion detector whether the energy constrained device has moved based on the motion detect signal;
determining whether to request position information from the device position determinator based on whether the energy constrained device has moved beyond a desired amount;
waking the device position determinator from the low power mode when the device has been determined to moved beyond a desired amount; and
receiving a location of the energy constrained device from the device position determinator based on the waking.
4 Assignments
0 Petitions
Accused Products
Abstract
An energy constrained device (100) includes a motion sensor (150) operative to detect motion of the device (100); a device position determinator (130); and a controller (110) operatively coupled at the motion sensor (150) and to the device position determinator (130) and operative to receive a device location request for the energy constrained device (100), to determine whether the energy constrained device (100) has moved based on the motion sensor (150), and to determine whether to request position information from the device position determinator (130) based on device movement. A method for saving power for a device position determinator (130) in a energy constrained device (100) includes determining whether position information has been requested from the device position determinator (130); and if not so, automatically switching the device position determinator (130) to a low power consumption mode.
53 Citations
18 Claims
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1. A method for saving power for an energy constrained device comprising:
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receiving a device location request for the energy constrained device; determining a location of the energy constrained device using a device position determinator; storing the determined location in a memory; placing the device position determinator in a low power mode; receiving a motion detect signal from a motion detector; determining by the motion detector whether the energy constrained device has moved based on the motion detect signal; determining whether to request position information from the device position determinator based on whether the energy constrained device has moved beyond a desired amount; waking the device position determinator from the low power mode when the device has been determined to moved beyond a desired amount; and receiving a location of the energy constrained device from the device position determinator based on the waking. - View Dependent Claims (2, 3, 4, 5)
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6. An energy constrained device comprising:
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a motion sensor operative to detect motion of the device; a device position determinator; and a controller operatively coupled to the motion sensor and to the device position determinator and operative to receive a device location request for the energy constrained device, to determine whether the energy constrained device has moved based on the motion sensor, and to determine whether to request position information from the device position determinator based on device movement and wherein the controller is operative to place the device position determinator in a low power state and wherein the controller is operatively coupled to the motion sensor and operative to determine whether the energy constrained device has moved based on the motion sensor and wherein the controller is operative to report a previous position returned by the device position determinator if the device has not moved since the previous position information was returned. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method for saving power for a device position determinator in an energy constrained device comprising:
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establishing a request time period; receiving a request for position information; determining whether position information has been requested from the device position determinator within the established request time period; and
if not, automatically switching the device position determinator to a low power consumption mode. - View Dependent Claims (13, 14, 15)
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16. An energy constrained device comprising:
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a device position determinator operative to determine whether position has been requested from the device position determinator and, if not, to automatically go a low power consumption mode; a controller operatively coupled to the device position determinator and operative to receive a device location request for the energy constrained device and to request position information from the device position determinator; a motion sensor wherein the controller is operatively coupled to the motion sensor and operative to determine whether the energy constrained device has moved based on the motion sensor and wherein the controller is operative to report a previous position returned by the device position determinator if the device has not moved since the previous position information was returned. - View Dependent Claims (17)
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18. A method for saving power for an energy constrained device comprising:
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receiving a device location request for the energy constrained device; determining a location of the energy constrained device using a device position determinator; storing the determined location in a memory; placing the device position determinator in a low power mode; receiving a motion detect signal from a motion detector; determining by the motion detector whether the energy constrained device has moved based on the motion detect signal; determining whether to request position information from the device position determinator based on whether the energy constrained device has moved; waking the device position determinator from the low power mode; receiving a location of the energy constrained device from the device position determinator based on the waking; determining, by the device position determinator, whether position information has been requested from the device position determinator during a request time period; and if not, switching, the device position determinator to a low power consumption mode.
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Specification