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The 1st step which impresses the packing density improvement manner of hard disk
The 1st step which impresses the packing density improvement manner of hard disk
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机译：彰显硬盘堆积密度提高方式的第一步
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摘要
PROBLEM TO BE SOLVED: To provide a method of increasing recording density of a hard disc drive and to provide a controlling device thereof.;SOLUTION: The method includes a first step for applying a recording current corresponding to a recording signal to a magnetic head of a hard disc drive, and a second step for limiting a current value being applied to the magnetic head to a critical value when the recording current reaches the critical value. In the method, a rising time is reduced by using an overshoot recording current and the recording current is limited to a critical value when an actual recording current reaches the critical value. Thus, WTW (write track widths) can be reduced at a low recording frequency, and thereby TPI (tracks per inch) is increased.;COPYRIGHT: (C)2009,JPO&INPIT
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