Timing circuit calibration in devices with selectable power modes
First Claim
1. A method comprising, with a device operable in a plurality of selectable power modes:
- setting a timing circuit based, at least in part, on a phase value obtained from a signal acquired from a ground-based transmitter, wherein said signal comprises a pilot signal and said phase value is determined based, at least in part, on one or more time phase measurements of said pilot signal; and
transitioning operation of said device to a lower power mode, wherein at least a portion of a receiver used to acquire said signal is disabled and at least a portion of enabled device circuitry uses said timing circuit, based, at least in part, on at least one of;
a determination that a profile test indicating that said device is within a characterized environment is satisfied, at least in part, by said phase value;
ora determination based, at least in part, on said phase value, that said device is in a constrained motion state.
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Accused Products
Abstract
Techniques are provided which may be implemented in various methods, apparatuses, and/or articles of manufacture for use by a device that is operable in a plurality of modes, including “higher power mode” and a “lower power mode”. A timing circuit may be set based, at least in part, on a phase value obtained from a signal from a ground-based transmitter, and operation of the device may be selectively transitioned to a lower power mode wherein the device uses the timing circuit. In certain example implementations, operation of the device to the lower power mode may be selectively transition and based, at least in part, on a determination that one or more attribute values satisfy a profile test indicating that the electronic device is likely to be within a characterized environment, and/or a determination that the electronic device is likely to be in a constrained motion state.
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Citations
30 Claims
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1. A method comprising, with a device operable in a plurality of selectable power modes:
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setting a timing circuit based, at least in part, on a phase value obtained from a signal acquired from a ground-based transmitter, wherein said signal comprises a pilot signal and said phase value is determined based, at least in part, on one or more time phase measurements of said pilot signal; and transitioning operation of said device to a lower power mode, wherein at least a portion of a receiver used to acquire said signal is disabled and at least a portion of enabled device circuitry uses said timing circuit, based, at least in part, on at least one of; a determination that a profile test indicating that said device is within a characterized environment is satisfied, at least in part, by said phase value;
ora determination based, at least in part, on said phase value, that said device is in a constrained motion state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for use in a device operable in a plurality of selectable power modes, the apparatus comprising:
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means for setting a timing circuit based, at least in part, on a phase value obtained from a signal acquired from a ground-based transmitter, wherein said signal comprises a pilot signal and said phase value is determined based, at least in part, on one or more time phase measurements of said pilot signal; and means for transitioning operation of said device to a lower power mode, wherein while said device is operating in said lower power mode at least a portion of a receiver used to acquire said signal is disabled and at least a portion of enabled device circuitry uses said timing circuit, based, at least in part, on at least one of; a determination that a profile test indicating that said device is within a characterized environment is satisfied, at least in part, by said phase value;
ora determination based, at least in part, on said phase value, that said device is in a constrained motion state. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A device operable in a plurality of selectable power modes, the device comprising:
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a receiver; a timing circuit; and a processing unit to; set the timing circuit based, at least in part, on a phase value obtained from a signal acquired from a ground-based transmitter using said receiver, wherein said signal comprises a pilot signal and said phase value is determined based, at least in part, on one or more time phase measurements of said pilot signal; and transition operation of said device to a lower power mode, wherein at least a portion of said receiver is disabled and at least a portion of enabled device circuitry uses said timing circuit, based, at least in part, on at least one of; a determination that a profile test indicating that said device is within a characterized environment is satisfied, at least in part, by said phase value;
ora determination based, at least in part, on said phase value, that said device is in a constrained motion state. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A non-transitory computer readable medium comprising computer implementable instructions executable by a processing unit of a device to:
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set a timing circuit based, at least in part, on a phase value obtained from a signal acquired from a ground-based transmitter, wherein said signal comprises a pilot signal and said phase value is determined based, at least in part, on one or more time phase measurements of said pilot signal; and transition operation of said device to a lower power mode wherein while said device is operating in said lower power mode at least a portion of a receiver used to acquire said signal is disabled and at least a portion of enabled device circuitry uses said timing circuit, based, at least in part, on at least one of; a determination that a profile test indicating that said device is within a characterized environment is satisfied, at least in part, by said phase value;
ora determination based, at least in part, on said phase value, that said device is in a constrained motion state. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification