View source for 17489190. PEDESTRIAN SENSOR ACCURACY WITH MINIMAL DEPENDENCE ON MAGNETOMETER simplified abstract (QUALCOMM Incorporated)

=PEDESTRIAN SENSOR ACCURACY WITH MINIMAL DEPENDENCE ON MAGNETOMETER=


==Organization Name==

[[:Category:QUALCOMM Incorporated|QUALCOMM Incorporated]]


[[Category:QUALCOMM Incorporated]]

==Inventor(s)==

[[:Category:William Morrison of San Francisco CA (US)|William Morrison of San Francisco CA (US)]][[Category:William Morrison of San Francisco CA (US)]]

[[:Category:Hsiao Chien Liang of San Jose CA (US)|Hsiao Chien Liang of San Jose CA (US)]][[Category:Hsiao Chien Liang of San Jose CA (US)]]

[[:Category:Gautam Nirula of San Jose CA (US)|Gautam Nirula of San Jose CA (US)]][[Category:Gautam Nirula of San Jose CA (US)]]

[[:Category:Himanshu Shah of Milpitas CA (US)|Himanshu Shah of Milpitas CA (US)]][[Category:Himanshu Shah of Milpitas CA (US)]]

==PEDESTRIAN SENSOR ACCURACY WITH MINIMAL DEPENDENCE ON MAGNETOMETER - A simplified explanation of the abstract==


This abstract first appeared for US patent application 17489190 titled 'PEDESTRIAN SENSOR ACCURACY WITH MINIMAL DEPENDENCE ON MAGNETOMETER

==Simplified Explanation==

The patent application describes a method for calibrating a gyroscope in an electronic device without using a magnetometer or relying on data from a magnetometer. Here are the key points:

* The apparatus estimates gyroscopic biases for different temperatures and creates a mapping between temperatures and biases.
* It monitors the temperature of the gyroscope using a gyroscope temperature sensor.
* When the gyroscope changes temperature, the apparatus calibrates it based on the mapping or a predicted value derived from the mapping.
* The apparatus calculates a Dead Reckoning (DR) trajectory using the calibrated gyroscope and accelerometer, without using a magnetometer or its data.

== Potential Applications ==
* This technology can be used in various electronic devices that rely on gyroscopes for motion sensing, such as smartphones, tablets, gaming consoles, and virtual reality headsets.
* It can improve the accuracy and reliability of motion tracking in these devices, enhancing user experience in applications like gaming, augmented reality, and virtual reality.

== Problems Solved ==
* Traditional gyroscope calibration methods require the use of a magnetometer or its data, which may not always be available or reliable.
* This innovation solves the problem of gyroscope calibration in situations where a magnetometer is not present or its data is not accurate, ensuring accurate motion sensing in electronic devices.

== Benefits ==
* By eliminating the need for a magnetometer or its data, the apparatus simplifies the calibration process for gyroscopes.
* It reduces the reliance on external sensors, making the calibration more robust and independent of external factors.
* The calibrated gyroscope, along with the accelerometer, can provide accurate motion tracking for various applications, improving user experience and enabling new possibilities in electronic devices.


==Original Abstract Submitted==

Aspects presented herein may enable an electronic device to determine gyroscope biases and calibrate a gyroscope without a magnetometer or without relying on data generated from a magnetometer. In one aspect, an apparatus estimates a set of gyroscopic biases for a plurality of temperatures or temperature ranges to create a mapping that maps the plurality of temperatures or temperature ranges to the set of gyroscopic biases. The apparatus monitors temperatures of a gyroscope via a gyroscope temperature sensor. The apparatus calibrates the gyroscope in response to the gyroscope changing from a first temperature to a second temperature based on the mapping or based on a predicted value derived from the mapping. In some aspects, the apparatus calculates a DR trajectory of the apparatus based at least in part on the calibrated gyroscope and the accelerometer without using a magnetometer or without using data generated from the magnetometer.



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