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US 11,852,554 B1Granted
Barometer calibration in a location sharing system
AssigneeSnap Inc.
InventorsEric Guillaume, Antoine Sinton
Life of this patent
Estimating the term…
Abstract
Methods, systems, and devices for calibrating a barometer of a client device. A server computer accesses historical data including location data, and atmospheric pressure data collected from a plurality of client devices over a period of time. An equation system defined by the historical data is solved. The equation system has a plurality of unknown parameters, the plurality of unknown parameters comprising a barometer bias of a first client device among the plurality of client devices. The first client device is calibrated using the barometer bias.
Claims18
A method comprising:
- accessing, at a server computer, historical data including historical location values and historical atmospheric pressure values collected from a plurality of client devices over a period of time;
- estimating, by the server computer, a barometer bias of a first client device by solving an equation system, the equation system having a plurality of parameters including the historical location values and the historical atmospheric pressure values for the plurality of client devices, the plurality of parameters further including an unknown parameter of a barometer bias for each client device of the plurality of client devices;
- providing for calibrating the first client device based on the barometer bias of the first client device;
- determining, by the server computer, a floor level on which a first user associated with the first client device is located, based on current location data and a current altitude of the first client device as calibrated;
- and
- causing, on a second client device associated with a second user, display of a user interface including a map, an avatar of the first user positioned within the map based on the current location data, and an indication of the floor level together with the avatar of the first user.
3 more elements
A system comprising:
- one or more processors;
- and
- a memory storing instructions that, when executed by the one or more processors, configure the system to perform operations comprising:
- accessing historical data including historical location values and historical atmospheric pressure values collected from a plurality of client devices over a period of time;
- estimating a barometer bias of a first client device by solving an equation system, the equation system having a plurality of parameters including the historical location values and the historical atmospheric pressure values for the plurality of client devices, the plurality of parameters further including an unknown parameter of a barometer bias for each client device of the plurality of client devices;
- providing for calibrating the first client device based on the barometer bias of the first client device,
- determining a floor level on which a first user associated with the first client device is located, based on current location data and a current altitude of the first client device as calibrated;
- and
- causing, on a second client device associated with a second user, display of a user interface including a map, an avatar of the first user positioned within the map based on the current location data, and an indication of the floor level together with the avatar of the first user.
6 more elements
A non-transitory computer-readable storage medium, the computer-readable storage medium including instructions that when executed by a computer, cause the computer to perform operations comprising:
- accessing historical data including historical data including historical location values and historical atmospheric pressure values collected from a plurality of client devices over a period of time;
- estimating a barometer bias of a first client device by solving an equation system, the equation system having a plurality of parameters including the historical location values and the historical atmospheric pressure values for the plurality of client devices, the plurality of parameters further including an unknown parameter of a barometer bias for each client device of the plurality of client devices;
- providing for calibrating the first client device based on the barometer bias of the first client device;
- determining a floor level on which a first user associated with the first client device is located, based on current location data and a current altitude of the first client device as calibrated;
- and
- causing, on a second client device associated with a second user, display of a user interface including a map, an avatar of the first user positioned within the map based on the current location data, and an indication of the floor level together with the avatar of the first user.
3 more elements
Dependencies are inferred from the claim text.