Magnetic disk drive which accesses host RAM

Details Magnetic disk drive which accesses host RAM Magnetic disk drive which accesses host RAM

2006-01-17

2006-01-17

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Reexamination Certificate

active

06987635

ABSTRACT:
In a magnetic disk apparatus which is removably mounted or embedded to a host apparatus and intermittently accessed for recording/reproducing data, a RAM contained in the host apparatus is utilized for a portion or entirety of a buffer RAM for use in the intermittent access to accomplish a reduction in size and cost of the magnetic disk apparatus. In addition, the magnetic disk apparatus is controlled to rotate a magnetic disk at a variable rotational speed, and operated at a rotational speed at which the total power consumption is minimized in accordance with the capacity of the utilized buffer RAM and whether an access is made for recording or reproduction, thereby improving a power saving effect.

REFERENCES:
patent: 5822288 (1998-10-01), Shinada
patent: 2003/0172317 (2003-09-01), Tsunoda et al.
patent: A-7-153182 (1995-06-01), None
patent: A-11-110917 (1999-04-01), None
patent: A-11-259979 (1999-09-01), None
US 5,455,812, 10/1995, Shinada (withdrawn)

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