61 patents
Utility
Constraining barometric pressure sensor calibration with sporadic data collection
12 Dec 23
Multiple calibration results for calibrating a barometric pressure sensor based on data received from a device containing the sensor are determined and stored in a table.
Michael Dormody, Guiyuan Han, Badrinath Nagarajan, Arun Raghupathy
Filed: 20 Jan 23
Utility
Estimating Floor Numbers and Floor Labels in a Structure
30 Nov 23
A method involves selecting a set of altitude envelope distribution constraints for a building and generating a set of altitude envelope distributions for the building in accordance with the constraints.
Michael DORMODY, Badrinath NAGARAJAN, Guiyuan HAN, Arun RAGHUPATHY
Filed: 24 May 23
Utility
Calibrating A Pressure Sensor
30 Nov 23
Calibrating a pressure sensor of a mobile device includes determining a first plurality of calibration values for a first plurality of visits to a first revisit zone to which a mobile device repeatedly returns; determining a first relative calibration adjustment value based on the first plurality of calibration values; determining an adjusted absolute calibration value based on i) an absolute calibration value used to calibrate pressure measurements made by a pressure sensor of the mobile device, and ii) the first relative calibration adjustment value; and calibrating pressure measurements made by the pressure sensor of the mobile device using the adjusted absolute calibration value.
Michael DORMODY, Deepak JOSEPH, Badrinath NAGARAJAN, Guiyuan HAN, Arun RAGHUPATHY
Filed: 1 Aug 23
Utility
Systems and methods for extending the spatial coverage of a reference pressure network
7 Nov 23
Extending the spatial coverage of a reference pressure network.
Badrinath Nagarajan, Guiyuan Han, Michael Dormody
Filed: 2 Feb 22
Utility
Systems and Methods for Determining When to Calibrate a Pressure Sensor of a Mobile Device
26 Oct 23
A method involves determining weighted metric values for each metric of a plurality of metrics by applying a weight for each metric to a determined value of each metric.
Michael DORMODY, Guiyuan HAN, Badrinath NAGARAJAN
Filed: 27 Jun 23
Utility
Systems and Methods for Determining a Height of a Mobile Device Above a Surface
19 Oct 23
Determining one or more heights of one or more mobile devices above surfaces.
William ALBERTH, JR., Michael DORMODY
Filed: 21 Jun 23
Utility
Wide Area Positioning System
28 Sep 23
Systems and methods are described for determining position of a receiver.
Arun RAGHUPATHY, Ganesh PATTABIRAMAN, Subramanian S. MEIYAPPAN, Hari SANKAR
Filed: 26 May 23
Utility
Calibrating a pressure sensor
19 Sep 23
Calibrating a pressure sensor of a mobile device incudes determining an absolute calibration value used to calibrate pressure measurements by a pressure sensor of a mobile device; determining a first revisit zone as a first location to which the mobile device repeatedly returns; determining first and second calibrations for first and second visits to the first revisit zone; determining a first relative calibration adjustment value based on a difference between the first and second calibrations; determining an adjusted absolute calibration value based on a sum of the absolute calibration value and the first relative calibration adjustment value; and estimating an altitude of the mobile device based on a pressure measurement by the pressure sensor and the adjusted absolute calibration value.
Michael Dormody, Deepak Joseph, Badrinath Nagarajan, Guiyuan Han, Arun Raghupathy
Filed: 12 Jan 22
Utility
Device Based Barometric Pressure Sensor Calibration
31 Aug 23
Device-based barometric pressure sensor calibration involves determining a specific location of the mobile device; determining a general location of the mobile device that encompasses and obfuscates the specific location; transmitting the general location to a server; receiving general calibration data for the general location; determining specific calibration data based on the general calibration data and the specific location; determining a calibration value based on the specific calibration data, the calibration value being for calibrating the barometric pressure sensor.
Michael DORMODY, Arun RAGHUPATHY, Badrinath NAGARAJAN, Frank Yenshaw, Deepak Joseph
Filed: 30 Aug 22
Utility
Floor height estimation and calibration of a mobile device
22 Aug 23
Methods and machines involve detecting when a mobile device is in a first area and a second area at different times, collecting pressure data from the mobile device and reference sensor(s) to estimate altitudes of the mobile device within the first area and the second area, collecting terrain altitudes associated with the first area and the second area, and using a difference between the estimated altitudes and a difference between the terrain altitudes to determine a height of a floor.
Badrinath Nagarajan, Arun Raghupathy, Michael Dormody, Guiyuan Han
Filed: 3 Jan 22
Utility
Systems and methods for determining when to calibrate a pressure sensor of a mobile device
22 Aug 23
Determining when to calibrate a pressure sensor of a mobile device.
Michael Dormody, Guiyuan Han, Badrinath Nagarajan
Filed: 21 Jul 21
Utility
Coding In a Positioning System
17 Aug 23
Embodiments describe determining position by selecting a set of digital pseudorandom sequences.
Arun RAGHUPATHY, Norman F. KRASNER
Filed: 30 Mar 23
Utility
Systems and Methods for Determining Contexts of Mobile Devices
17 Aug 23
Determining contexts of mobile devices.
Michael DORMODY, Arun RAGHUPATHY, Badrinath NAGARAJAN, Guiyuan HAN
Filed: 20 Apr 23
Utility
Systems and methods for determining a height of a mobile device above a surface
8 Aug 23
Determining one or more heights of one or more mobile devices above surfaces.
William Alberth, Michael Dormody
Filed: 2 Dec 21
Utility
Systems and Methods for Positioning During Atypical Atmospheric Conditions
20 Jul 23
Determining when a barometric-based approach for estimating an unknown altitude of a mobile device should not be used.
Jerome VOGEDES, William ALBERTH, JR.
Filed: 27 Feb 23
Utility
Wide area positioning system
18 Jul 23
Systems and methods are described for determining position of a receiver.
Arun Raghupathy, Ganesh Pattabiraman, Subramanian S. Meiyappan, Hari Sankar
Filed: 31 Aug 21
Utility
Identifying Erroneous Calibration Values of Barometric Air Pressure Sensor
13 Jul 23
A method involves identifying multiple calibration values and corresponding calibration confidence values of an initial calibration dataset in which one or more calibration values were derived using an atmospheric pressure measurement from a barometric air pressure sensor of a mobile device.
Michael DORMODY, Guiyuan HAN, Badrinath NAGARAJAN, Arun RAGHUPATHY
Filed: 6 Jan 23
Utility
Triggering the Collecting And/or Using of Calibration Data
13 Jul 23
An alert indicates that a situation conducive to calibrating a barometric pressure sensor of the user device might have occurred.
Michael DORMODY, Deepak Joseph, Badrinath NAGARAJAN, Arun RAGHUPATHY, Frank Yenshaw
Filed: 10 Jan 23
Utility
Constraining Barometric Pressure Sensor Calibration with Sporadic Data Collection
25 May 23
Multiple calibration results for calibrating a barometric pressure sensor based on data received from a device containing the sensor are determined and stored in a table.
Michael DORMODY, Guiyuan HAN, Badrinath NAGARAJAN, Arun RAGHUPATHY
Filed: 20 Jan 23
Utility
Systems and Methods for Determining, Broadcasting and Using Reference Atmospheric Data In a Network of Transmitters
25 May 23
Determining, broadcasting and using reference pressure data in a network of transmitters.
Cristina SEIBERT, Jerome VOGEDES, William ALBERTH
Filed: 20 Jan 23