Invention Grant
US08576678B1 System and method for tracking position of a laser beam on a storage device 失效
用于跟踪激光束在存储设备上的位置的系统和方法

  • Patent Title: System and method for tracking position of a laser beam on a storage device
  • Patent Title (中): 用于跟踪激光束在存储设备上的位置的系统和方法
  • Application No.: US13718496
    Application Date: 2012-12-18
  • Publication No.: US08576678B1
    Publication Date: 2013-11-05
  • Inventor: Pantas Sutardja
  • Applicant: Pantas Sutardja
  • Applicant Address: BM Hamilton
  • Assignee: Marvell International Ltd.
  • Current Assignee: Marvell International Ltd.
  • Current Assignee Address: BM Hamilton
  • Main IPC: G11B7/00
  • IPC: G11B7/00
System and method for tracking position of a laser beam on a storage device
Abstract:
A system including a control module, error modules, and a tracking module. The control module: transitions a laser beam between positions on an storage medium; based on a tracking signal, adjusts a speed that the laser beam is transitioned, and while the laser beam is transitioned, increases the speed that the laser beam is transitioned from a first speed to a second speed. The error modules determine a track error of a current position of the laser beam and estimate a depth of a groove. The tracking module: while the speed of the laser beam is equal to the first speed, tracks the current position based on the track error and the depth of the groove; while the speed of the laser beam is equal to the second speed, tracks the current position based on the track error; and generates the tracking signal based on the current position.
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