US5315455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data recording/reproducing apparatus
Assignee: Toshiba Corp
•
Filing: 1992-03-09
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Granted: 1994-05-24
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Expires: 2012-03-09
Abstract
Abstract In a sector servo type magnetic disk apparatus having a carriage lock mechanism for locking a carriage by using magnetic force of a magnet, when a magnetic head placed on a CSS (contact start and stop) zone in contact with a disk is unlocked and moved to a data zone, a driving current supplied to a voice coil motor for driving the carriage is increased at a predetermined rate, until servo data recorded in the data zone is detected.
Inventors
- 👤 Hiroshi Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:53
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G11B21/12; G11B5/00; G11B5/48; G11B5/54
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
159 words
A data recording or reproducing apparatus comprising: a recording medium having a data zone prestoring servo data and a contact start and stop zone; head means for reading or writing data from or in the recording medium; supporting means for supporting the head means; moving means for moving the supporting means; supplying means for supplying a driving current to the moving means; locking means for locking the supporting means when the head means is placed on the contact start and stop zone; detecting means for detecting the servo data from data read from the data zone by the head means; and controlling means for controlling the supplying means so that the driving current is supplied to the moving means at predetermined time intervals when the head means is moved to the data zone from the contact start and stop zone, the driving current being increased at a predetermined rate until the servo data is detected by the detecting means.
Claim 2
Dependent Claim
159 words
A data recording or reproducing apparatus comprising: a recording medium having a data zone prestoring servo data and a contact start and stop zone; head means for reading or writing data from or in the recording medium; supporting means for supporting the head means; moving means for moving the supporting means; supplying means for supplying a driving current to the moving means; locking means for locking the supporting means when the head means is placed on the contact start and stop zone; detecting means for detecting the servo data from data read from the data zone by the head means; and controlling means for controlling the supplying means so that the driving current is supplied to the moving means at predetermined time intervals when the head means is moved to the data zone from the contact start and stop zone, the driving current being increased at a predetermined rate until the servo data is detected by the detecting means.
Claim 3
Dependent Claim
35 words
The data recording or reproducing apparatus according to claim 1, wherein a supply time of the driving current supplied to the moving means at the predetermined time intervals is successively increased by the control means.
Claim 4
Dependent Claim
34 words
The data recording or reproducing apparatus according to claim 1, wherein a level of the driving current supplied to the moving means at the predetermined time intervals is successively increased by the control means.
Claim 5
Independent Claim
157 words
A method of controlling a driving current supplied to a motor for moving a carriage in a data recording or reproducing apparatus comprising a recording medium having a data zone prestoring servo data and a contact start and stop zone, a carriage for supporting a magnetic head, a lock mechanism for locking the carriage when the magnetic head is placed on the contact start and stop zone, and the motor for moving the carriage, the method comprising the steps of: supplying the driving current to the motor at predetermined time intervals to move the carriage, when the magnetic head is moved to the data zone from the contact start and stop zone; determining whether the servo data has been read out from the recording medium by the magnetic head; and increasing the driving current supplied to the motor at a predetermined rate until the servo data is read out from the recording medium by the magnetic head.
Claim 6
Independent Claim
157 words
A method of controlling a driving current supplied to a motor for moving a carriage in a data recording or reproducing apparatus comprising a recording medium having a data zone prestoring servo data and a contact start and stop zone, a carriage for supporting a magnetic head, a lock mechanism for locking the carriage when the magnetic head is placed on the contact start and stop zone, and the motor for moving the carriage, the method comprising the steps of: supplying the driving current to the motor at predetermined time intervals to move the carriage, when the magnetic head is moved to the data zone from the contact start and stop zone; determining whether the servo data has been read out from the recording medium by the magnetic head; and increasing the driving current supplied to the motor at a predetermined rate until the servo data is read out from the recording medium by the magnetic head.
Claim 7
Dependent Claim
26 words
The method according to claim 4, wherein a supply time of the driving current supplied to the motor at the predetermined time intervals is successively increased.
Claim 8
Dependent Claim
25 words
The method according to claim 4, wherein the level of the driving current supplied to the motor at the predetermined time intervals is successively increased.
Claim 9
Dependent Claim
15 words
An apparatus according to claim 1, wherein the moving means is a voice coil motor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-23 | 1997-11-22 | 1998-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-23 | 2001-11-22 | 2002-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-23 | 2005-11-22 | 2006-05-24 | $7700.00 | Window Closed / Lapsed |