System and method for calibrating a magnetometer according to a quality threshold
View Patent ↗A method and system are provided for calibrating a magnetometer. The method comprises determining a current quality level associated with magnetometer readings obtained using an active set of calibration parameters; and lowering a quality threshold for a background calibration of the magnetometer when the current quality level exceeds a threshold quality level needed by an application utilizing the magnetometer readings.
1. A method of calibrating a magnetometer on a mobile device, the method comprising:
determining a current quality level associated with magnetometer readings obtained using an active set of calibration parameters; and
lowering a quality threshold for a background calibration of the magnetometer when the current quality level exceeds a threshold quality level needed by an application utilizing the magnetometer readings.
2. The method according to claim 1 , wherein lowering the quality threshold prevents an ongoing background calibration from attempting to achieve a higher quality level.
3. The method according to claim 1 , wherein the threshold quality level needed by the application is provided in an instruction from the application to calibrate the magnetometer.
4. The method according to claim 3 , wherein the instruction is associated with an absence of calibration parameters for the magnetometer.
5. The method according to claim 1 , further comprising initiating a foreground calibration of the magnetometer if the threshold quality level needed by the application is higher than the current quality level.
6. The method according to claim 1 , wherein the application is any one of a digital compass application, a stud-finder application, and an augmented reality based application.
7. A non-transitory computer readable medium comprising computer executable instructions for calibrating a magnetometer on a mobile device, the computer readable medium comprising instructions for:
determining a current quality level associated with magnetometer readings obtained using an active set of calibration parameters; and
lowering a quality threshold for a background calibration of the magnetometer when the current quality level exceeds a threshold quality level needed by an application utilizing the magnetometer readings.
8. The non-transitory computer readable medium according to claim 7 , wherein lowering the quality threshold prevents an ongoing background calibration from attempting to achieve a higher quality level.
9. The non-transitory computer readable medium according to claim 7 , wherein the threshold quality level needed by the application is provided in an instruction from the application to calibrate the magnetometer.
10. The non-transitory computer readable medium according to claim 9 , wherein the instruction is associated with an absence of calibration parameters for the magnetometer.
11. The non-transitory computer readable medium according to claim 7 , further comprising instructions for initiating a foreground calibration of the magnetometer if the threshold quality level needed by the application is higher than the current quality level.
12. The non-transitory computer readable medium according to claim 7 , wherein the application is any one of a digital compass application, a stud-finder application, and an augmented reality based application.
13. A mobile device comprising a processor coupled to a memory, and a magnetometer, the memory comprising computer executable instructions for:
determining a current quality level associated with magnetometer readings obtained using an active set of calibration parameters; and
lowering a quality threshold for a background calibration of the magnetometer when the current quality level exceeds a threshold quality level needed by an application utilizing the magnetometer readings.
14. The mobile device according to claim 13 , wherein lowering the quality threshold prevents an ongoing background calibration from attempting to achieve a higher quality level.
15. The mobile device according to claim 13 , wherein the threshold quality level needed by the application is provided in an instruction from the application to calibrate the magnetometer.
16. The mobile device according to claim 15 , wherein the instruction is associated with an absence of calibration parameters for the magnetometer.
17. The mobile device according to claim 13 , further comprising initiating a foreground calibration of the magnetometer if the threshold quality level needed by the application is higher than the current quality level.
18. The mobile device according to claim 13 , wherein the application is any one of a digital compass application, a stud-finder application, and an augmented reality based application.