ESTIMATING DISTANCES BETWEEN DEVICES
2 Assignments
0 Petitions
Accused Products
Abstract
A mobile recording device comprises means for detecting an audio signal emitted by the first device and means for measuring a strength of the audio signal. A server or the mobile comprises means for using the measured signal strength to estimate a distance between the first and second devices. A server comprises means for storing first and second collections of data sets, each of the data sets of the first collection comprising an emission time stamp, each of the data sets of the second collection comprising a reception time stamp and data indicative of a received signal strength; means for using emission time stamps and reception time stamps of the data sets to identify a data set of the first collection that corresponds to a data set of the second collection; and means for using the data indicative of the signal strength from the identified data set of the second collection to estimate the distance between devices that are sources of the identified data sets.
16 Citations
91 Claims
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1-68. -68. (canceled)
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69. A method of estimating a distance between a first device and a second device, the method comprising the second device:
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detecting an audio signal emitted by the first device; measuring a strength of the audio signal; and using the measured signal strength to estimate a distance between the first and second devices. - View Dependent Claims (70, 71, 72, 73, 74, 75, 76, 77, 78)
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79. Apparatus, the apparatus having at least one processor and at least one memory having computer-readable code stored therein which when executed controls the at least one processor to:
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detect an audio signal emitted by the first device; measure a strength of the audio signal; and use the measured signal strength to estimate a distance between the first and second devices. - View Dependent Claims (80, 81, 82, 83, 84, 85, 86, 87, 88)
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89. A non-transitory computer-readable storage medium having stored thereon computer-readable code, which, when executed by computing apparatus, causes the computing apparatus to perform a method comprising:
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detecting an audio signal emitted by the first device; measuring a strength of the audio signal; and using the measured signal strength to estimate a distance between the first and second devices. - View Dependent Claims (90, 91)
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Specification