Invention Grant
- Patent Title: Methods and devices for determining orientation
- Patent Title (中): 确定方向的方法和装置
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Application No.: US13420753Application Date: 2012-03-15
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Publication No.: US09279680B2Publication Date: 2016-03-08
- Inventor: Nathan Daniel Pozniak Buchanan , Nazih Almalki
- Applicant: Nathan Daniel Pozniak Buchanan , Nazih Almalki
- Applicant Address: CA Waterloo, Ontario
- Assignee: BlackBerry Limited
- Current Assignee: BlackBerry Limited
- Current Assignee Address: CA Waterloo, Ontario
- Agency: Rowand LLP
- Main IPC: G01C25/00
- IPC: G01C25/00 ; G01C21/00 ; G01C19/00

Abstract:
Methods and electronic devices for determining orientation are described. In one aspect, a processor-implemented method of determining a corrected orientation of a gyroscope on an electronic device includes: generating a gyroscope reading using the gyroscope; determining, by the processor, a first orientation estimate based on the gyroscope reading and a past corrected orientation; determining, by the processor, whether the gyroscope was saturated when the gyroscope reading was generated; adjusting, by the processor, a saturation correction learning rate for the gyroscope based on the result of the determination of whether the gyroscope was saturated; and calculating, by the processor, the corrected orientation based on the first orientation estimate, a second orientation estimate and the saturation correction learning rate.
Public/Granted literature
- US20130245982A1 METHODS AND DEVICES FOR DETERMINING ORIENTATION Public/Granted day:2013-09-19
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