EP0285452A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Magnetic disk apparatus using both servo-surface servo and data-surface servo
Assignee: Toshiba Corp
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Filing: 1988-03-31
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Granted: —
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Expires: 2008-03-31
Abstract
Abstract Disclosed is a magnetic disk apparatus which prepares data-surface positioning information in accordance with a positioning information read out from a servo surface by a servo head (1), and provides a mode of writing the positioning information on a data surface by means of a read/write head.
Inventors
- 👤 Shunji Kitamura
- 👤 Tomihisa Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 20:07
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/28; G11B5/00; G11B5/48; G11B5/58; G11B5/596; G11B5/59633
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
168 words
A magnetic disk apparatus for positioning a read/write head by using both a servo-surface servo and a data-surface servo, comprising: means for preparing a positioning information used for writing a data-surface servo information in accordance with the signal read out from a servo surface by a servo head; means for positioning said read/write head at a predetermined position in accordance with said positioning information; means for preparing said data-surface servo information in accordance with the signal read out from said servo surface; means for writing said data-surface servo information in said data surface by using said read/write head; means for indicating a writing of said data-surface servo information; means for indicating the number of data-surface servo information to a track positioned on said data surface; and means for generating a signal for determining a write starting timing of said data-surface servo information in accordance with the signal read out from said servo surface and the signal from said means for indicating the number of said data-surface servo information.
Claim 2
Dependent Claim
168 words
A magnetic disk apparatus for positioning a read/write head by using both a servo-surface servo and a data-surface servo, comprising: means for preparing a positioning information used for writing a data-surface servo information in accordance with the signal read out from a servo surface by a servo head; means for positioning said read/write head at a predetermined position in accordance with said positioning information; means for preparing said data-surface servo information in accordance with the signal read out from said servo surface; means for writing said data-surface servo information in said data surface by using said read/write head; means for indicating a writing of said data-surface servo information; means for indicating the number of data-surface servo information to a track positioned on said data surface; and means for generating a signal for determining a write starting timing of said data-surface servo information in accordance with the signal read out from said servo surface and the signal from said means for indicating the number of said data-surface servo information.
Claim 3
Dependent Claim
31 words
The magnetic disk apparatus of claim 1, wherein said means for preparing a positioning information generates a signal for slipping out said read/write head by 1/2 track from a track pitch.
Claim 4
Dependent Claim
34 words
The magnetic disk apparatus of claim 1, wherein said means for writing said data-surface servo information generates said write starting signal by a counter started by an index signal sent from a spindle motor.
Claim 5
Dependent Claim
26 words
The magnetic disk apparatus of claim 1, wherein said means for preparing said data-surface servo information prepares said data-surface servo information by using an exclusive oscillator.
References Cited (Backward Citations)
No citation records indexed.
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