发明授权
- 专利标题: System and method for controlling tracking in an optical drive
- 专利标题(中): 用于控制光驱中跟踪的系统和方法
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申请号: US12338841申请日: 2008-12-18
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公开(公告)号: US08125862B2公开(公告)日: 2012-02-28
- 发明人: John Anderson Fergus Ross , Kenneth Brakeley Welles , John Erik Hershey , Xiaolei Shi , Victor Petrovich Ostroverkhov
- 申请人: John Anderson Fergus Ross , Kenneth Brakeley Welles , John Erik Hershey , Xiaolei Shi , Victor Petrovich Ostroverkhov
- 申请人地址: US NY Schenectady
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: US NY Schenectady
- 代理商 Fletcher Yoder
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
The present techniques provide methods and systems for alignment of a read head with data tracks on an optical data disk. In embodiments, a multi-pixel detector that is segmented into multiple areas, or detector segments, may be used to detect a pattern in the light reflected from an optical data disk. The detector system may then combine the quantized values from each of the detector segments mathematically to determine the alignment of the read head with a target data track. If the read head drifts to one side or the other, detectors to the side of a center detector may start to pick up energy from the adjacent tracks. If this energy is continuously summed for the detectors on each side, the read head may be centered by balancing the sums from the detectors on each side.
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