发明授权
US06765744B2 Track pitch control using head offset measurement for self-servowriting tracks in a disc drive 有权
使用光盘驱动器中自伺服轨迹的磁头偏移测量来跟踪音高控制

Track pitch control using head offset measurement for self-servowriting tracks in a disc drive
摘要:
A method of, apparatus for, and means for controlling pitch of a servowritten track on a disc in a disc drive are disclosed. The disc drive has a head for traversing over a surface of the disc. The head has a read element and a write element separated by a head element offset &Dgr;. A servowriting controller operably connected to the disc drive creates a track k by writing servo information on the disc. The servowriting controller then calculates the head element offset &Dgr; at the track k, [&Dgr;CALC(k)] and determines a skew angle &thgr; at the track k, [&thgr;(k)]. The servowriting controller adjusts a track pitch correction factor based on the &Dgr;CALC(K) and the &thgr;(k) such that the track pitch correction factor is utilized to servowrite a next track.
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