发明申请
- 专利标题: DYNAMIC COMPASS CALIBRATION IN A PORTABLE DEVICE
- 专利标题(中): 便携式设备中的动态指标校准
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申请号: US12479203申请日: 2009-06-05
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公开(公告)号: US20100312510A1公开(公告)日: 2010-12-09
- 发明人: Patrick S. Piemonte , Madhu Shrivastav , Puntee Mishra , Robert Mayor , Ronald K. Huang
- 申请人: Patrick S. Piemonte , Madhu Shrivastav , Puntee Mishra , Robert Mayor , Ronald K. Huang
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 主分类号: G01C17/38
- IPC分类号: G01C17/38 ; G06F19/00
摘要:
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.
公开/授权文献
- US08239153B2 Dynamic compass calibration in a portable device 公开/授权日:2012-08-07