MOTION STATE DETECTION FOR MOBILE DEVICE
First Claim
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1. A method, comprising:
- obtaining a first filtered combination of two or more inertial sensor measurements of one or more inertial states of a mobile device observed within a first time frame;
obtaining a second filtered combination of two or more inertial sensor measurements of one or more inertial states of the mobile device observed within a second time frame; and
indicating whether the mobile device is at rest or in motion based, at least in part, on a comparison of the first filtered combination and the second filtered combination.
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Abstract
Methods, apparatuses, and systems are provided to indicate whether a mobile device is at rest or in motion based, at least in part, on inertial sensor measurements obtained from one or more inertial sensors located on-board the mobile device. Inertial sensor measurements may be combined with navigation signals obtained from a satellite or terrestrial based navigation system in order to refine position, orientation, velocity, and/or acceleration estimates for the mobile device.
96 Citations
24 Claims
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1. A method, comprising:
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obtaining a first filtered combination of two or more inertial sensor measurements of one or more inertial states of a mobile device observed within a first time frame; obtaining a second filtered combination of two or more inertial sensor measurements of one or more inertial states of the mobile device observed within a second time frame; and indicating whether the mobile device is at rest or in motion based, at least in part, on a comparison of the first filtered combination and the second filtered combination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus, comprising:
a mobile device, comprising; one or more inertial sensors to measure one or more inertial states of the mobile device; a processor programmed with instructions to; obtain a first filtered combination of two or more inertial sensor measurements observed by the one or more inertial sensors within a first time frame; obtain a second filtered combination of two or more inertial sensor measurements observed by the one or more inertial sensors within a second time frame; and indicate whether the mobile device is at rest or in motion based, at least in part, on a comparison of the first filtered combination and the second filtered combination. - View Dependent Claims (15, 16, 17, 18)
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19. An apparatus, comprising:
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means for obtaining a first filtered combination of two or more inertial sensor measurements of one or more inertial states of a mobile device observed within a first time frame; means for obtaining a second filtered combination of two or more inertial sensor measurements of one or more inertial states of the mobile device observed within a second time frame; means for comparing the first filtered combination and second filtered combination to obtain a result; and means for indicating whether the mobile device is at rest or in motion based, at least in part, on the result of the comparison of the first filtered combination and the second filtered combination. - View Dependent Claims (20, 21)
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22. An article, comprising:
a storage medium having stored thereon instructions executable by a processor to; obtain a first filtered combination of two or more inertial sensor measurements of one or more inertial states of a mobile device observed within a first time frame; obtain a second filtered combination of two or more inertial sensor measurements of one or more inertial states of the mobile device observed within a second time frame; indicate whether the mobile device is at rest or in motion based, at least in part, on a comparison of the first filtered combination and the second filtered combination. - View Dependent Claims (23, 24)
Specification