Mobile device positioning based on independently obtained barometric pressure measurements
First Claim
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1. A method comprising, at a mobile device:
- obtaining a signal representing a barometric pressure measurement indicative of an altitude effect and a weather effect;
determining, by applying a first filter to said signal, a first parameter corresponding to said altitude effect during a first period of time;
determining, by applying a second filter to said signal, a second parameter corresponding to said weather effect during a second period of time; and
determining whether said mobile device is transitioning or has transitioned from an initial level to another level of a multiple level structure based, at least in part, on said first parameter and said second parameter.
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Abstract
Various techniques are provided which may be implemented as methods, apparatuses and articles of manufacture for use by a mobile device. In certain example implementations, a mobile device may process a barometric pressure measurement indicative of an altitude effect and a weather effect to determine a first parameter corresponding to the altitude effect and a second parameter corresponding to the weather. Such a mobile device may further determine whether it may be transitioning or may have transitioned from an initial level to another level of a multiple level structure based, at least in part, on the first and second parameters.
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Citations
30 Claims
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1. A method comprising, at a mobile device:
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obtaining a signal representing a barometric pressure measurement indicative of an altitude effect and a weather effect; determining, by applying a first filter to said signal, a first parameter corresponding to said altitude effect during a first period of time; determining, by applying a second filter to said signal, a second parameter corresponding to said weather effect during a second period of time; and determining whether said mobile device is transitioning or has transitioned from an initial level to another level of a multiple level structure based, at least in part, on said first parameter and said second parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mobile device comprising:
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a sensor to generate a signal representing a barometric pressure measurement indicative of an altitude effect and a weather effect; and a processing unit to; determine, by an application of a first filter to said signal, a first parameter corresponding to said altitude effect during a first period of time; determine, by an application of a second filter to said signal, a second parameter from said signal corresponding to said weather effect during a second period of time; and determine whether said mobile device is transitioning or has transitioned from an initial level to another level of a multiple level structure based, at least in part, on said first parameter and said second parameter. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus for use in a mobile device, the apparatus comprising:
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means for obtaining a signal representing a barometric pressure measurement indicative of an altitude effect and a weather effect; means for determining a first parameter, by applying a first filter means to said signal, corresponding to said altitude effect during a first period of time; means for determining a second parameter, by applying a second filter means to said signal, corresponding to said weather effect during a second period of time; and means for determining whether said mobile device is transitioning or has transitioned from an initial level to another level of a multiple level structure based, at least in part, on said first parameter and said second parameter. - View Dependent Claims (22, 23, 24, 25)
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26. An article comprising:
a non-transitory computer readable medium having stored therein computer implementable instructions executable by a processing unit of a mobile device to; obtain a signal representing a barometric pressure measurement indicative of an altitude effect and a weather effect; determine a first parameter, by an application of a first filter to said signal, corresponding to said altitude effect during a first period of time; determine a second parameter, by an application of a second filter to said signal, corresponding to said weather effect during a second period of time; and determine whether said mobile device is transitioning or has transitioned from an initial level to another level of a multiple level structure based, at least in part, on said first parameter and said second parameter. - View Dependent Claims (27, 28, 29, 30)
Specification