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CIRCUIT AND DEVICE FOR DETECTING SPIN-UP WEDGE AND SERVO- WEDGE, SPIN-UP WEDGE RELATED TO SPIN-UP OF DATA STORAGE DISK AND CORRESPONDING SERVO-WEDGE
CIRCUIT AND DEVICE FOR DETECTING SPIN-UP WEDGE AND SERVO- WEDGE, SPIN-UP WEDGE RELATED TO SPIN-UP OF DATA STORAGE DISK AND CORRESPONDING SERVO-WEDGE
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机译：用于检测自旋楔形和伺服楔形的电路和设备，与数据存储磁盘自旋和相应的伺服楔形相关的自旋楔形
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摘要
PROBLEM TO BE SOLVED: To provide a spin-up wedge relative to the spin-up of a data storage disk and to provide an improved servo circuit and a method to detect a corresponding servo-wedge.;SOLUTION: The servo circuit has a servo channel and a processor. The servo channel recovers servo data from a servo-wedge which identifies respective data sectors on the data storage disk. Relative to the spin-up of the disk, the processor detects a spin-up wedge related to one of the servo-wedge and then, detects the servo-wedge. When the servo-wedge is detected, a head positioning circuit reads positioning data from the servo-wedge and determines an initial position of a read/write head. By detecting both a spin-up wedge and a servo- wedge to determine the initial head position relative to a disk spin-up, the servo circuit frequently reduces the length of a spin-up wedge and increases the capacity of disk storage.;COPYRIGHT: (C)2003,JPO
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