Sensing and analysis of ambient contextual signals for discriminating between indoor and outdoor locations
First Claim
1. A system that facilitates determination of a device context, comprising:
- a context sensor that measures a parameter of a first context associated with a first ambient condition of a device; and
a context computing component that interfaces to the context sensor and facilitates determination of a change from the first context to a second context associated with a second ambient condition, comprising computing an inference that the device is inside or outside and turning off at least one component of the system, to facilitate saving power, based on the inference.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems that determine automatically the likelihood that a device is inside or outside of a structure or building. The system uses one or more sensors to detect ambient conditions, and make the determination. The inference can be used to save power or suppress services from certain devices, which are irrelevant, cannot be used effectively, or do not function under certain circumstances. In support thereof, the system includes one or more context sensors that measure parameters associated probabilistically with the context of a device. A context computing component considers one or more context sensors and facilitates determination of ideal actions, policies, and situations associated with the device. A service provided by the subject invention is the inference from one or more available observations the probability that the device is inside versus outside.
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Citations
36 Claims
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1. A system that facilitates determination of a device context, comprising:
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a context sensor that measures a parameter of a first context associated with a first ambient condition of a device; and a context computing component that interfaces to the context sensor and facilitates determination of a change from the first context to a second context associated with a second ambient condition, comprising computing an inference that the device is inside or outside and turning off at least one component of the system, to facilitate saving power, based on the inference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system that facilitates determination of a device context, comprising:
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a context sensor system that measures at least one environmental parameter of a first context associated with a first environmental condition of a portable device; and a context computing component that interfaces to the context sensor to compute a probability inference that the portable device changed from the first context to a second context associated with a second environmental condition and turns off at least one component of the system based on the inference. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A system that facilitates determination of a device context, comprising:
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a temperature sensor employed in a portable computing device to measure temperature; and a context computing component of the portable computing device that interfaces to the temperature sensor to compute a probability inference that a location of the portable device has changed and changing a power-saving policy of at least one component of the system based on the inference. - View Dependent Claims (24, 25, 26, 27)
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28. A computer readable medium having computer computer-executable instructions for performing a method of determining context of a portable computing device, comprising:
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measuring a first parameter of a first context associated with a first ambient condition of the portable computing device; determining a second parameter of a second context associated with a second ambient condition of the portable computing device; computing a probability inference based on the first and second parameters that the portable computing device moved from the first context to the second context; and changing a power-saving policy of at least one component of the system based on the probability inference. - View Dependent Claims (29, 30, 31, 32)
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33. A method of determining context of a portable computing device, comprising:
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determining a probability distribution of a first temperature of a first context of the portable computing device; measuring a second temperature of a second context of the portable computing device; computing a probability inference based on the first and second temperatures that the portable computing device moved from the first context to the second context; and changing a power-saving policy of at least one component of the system based on the inference. - View Dependent Claims (34, 35, 36)
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Specification