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US 2017/0363726 A1Published application
Mapping positions of devices using audio
AssigneeGoogle Inc.
InventorsGeoffrey Allen Borggaard, Daniel George Koulomzin, Christopher Richard Wren
Life of this patent
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Abstract
Disclosed are methods and systems for determining distance between two or more mobile devices utilizing a sound emitted from each device such as a chirp. Each device may determine or receive an indication of a time reference for each instance the device emits or detects a chirp. Utilizing the time reference data, the distance between the two or more devices may be determined assuming the sound travels at a constant speed of 340.29 m/s. Techniques for disambiguating orientation of the devices relative to one another rare also disclosed.
Claims14
A method, comprising:
- receiving from a first mobile device a first audio signal;
- receiving from a second mobile device a second audio signal;
- receiving a first indication of a first time reference corresponding to a first chirp from the first mobile device in the first audio signal;
- receiving a second indication of a second time reference corresponding to a second chirp from the second mobile device in the first audio signal;
- receiving a third indication of a third time reference corresponding to the first chirp from the first mobile device in the second audio signal;
- receiving a fourth indication of a fourth time reference corresponding to the second chirp from the second mobile device in the second audio signal;
- determining a first distance between the first chirp and the second chirp based on the first time reference and the second time reference;
- determining a second distance between the first chirp and the second chirp based on the third time reference and the fourth time reference;
- comparing the first distance to the second distance;
- and
- providing a distance calculation to the first mobile device and the second mobile device.
8 more elements
Dependencies are inferred from the claim text.