Invention Grant
- Patent Title: Dynamic compass calibration in a portable device
- Patent Title (中): 便携式设备中的动态罗盘校准
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Application No.: US12479203Application Date: 2009-06-05
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Publication No.: US08239153B2Publication Date: 2012-08-07
- Inventor: Patrick S. Piemonte , Madhu Shrivastav , Puneet Mishra , Robert Mayor , Ronald K. Huang , Parin Patel
- Applicant: Patrick S. Piemonte , Madhu Shrivastav , Puneet Mishra , Robert Mayor , Ronald K. Huang , Parin Patel
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Main IPC: G01C17/38
- IPC: G01C17/38
Abstract:
The magnitude of a sensed, raw magnetic field in a portable device is monitored over a given time interval. The monitored magnitude is compared with predetermined criteria. Based on the comparison, recalibration of a compass function is signed. Other embodiments are also described and claimed.
Public/Granted literature
- US20100312510A1 DYNAMIC COMPASS CALIBRATION IN A PORTABLE DEVICE Public/Granted day:2010-12-09
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