发明名称 |
Magnetic disk storage apparatus with phase sync circuit having controllable response characteristics |
摘要 |
A magnetic disk storage apparatus provides with a phase locked loop or a phase sync circuit including a phase comparator, a charge pump, a filter and a voltage-controlled oscillator. The phase sync circuit includes a register which is connected to an information processing system and adapted to store therein the response characteristics of the phase comparator, the charge pump, the filter and the voltage-controlled oscillator as instructed from the information processing system. In this way, in accordance with the information on the response characteristics from the information processing system, the phase sync circuit is controlled thereby to assure a stable operation even in the case of the data transfer speed varying between inner and outer track such as occurs in a magnetic disk.
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申请公布号 |
US5633766(A) |
申请公布日期 |
1997.05.27 |
申请号 |
US19940360426 |
申请日期 |
1994.12.21 |
申请人 |
HITACHI, LTD. |
发明人 |
HASE, KENICHI;MIYAZAWA, SYOICHI;HORITA, RYUTARO;KOJIMA, SHINICHI;HIRANO, AKIHIKO;URAGAMI, AKIRA |
分类号 |
G11B5/012;G11B20/14;H03K3/282;H03L7/089;H03L7/093;H03L7/095;H03L7/099;H03L7/107;H04L7/033;(IPC1-7):G11B5/09;G11B15/04 |
主分类号 |
G11B5/012 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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