Disk drive with head-disk interaction sensor integrated with...

Details Disk drive with head-disk interaction sensor integrated with... Disk drive with head-disk interaction sensor integrated with...

2007-12-25

2007-12-25

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

C360S060000

Reexamination Certificate

active

10664296

ABSTRACT:
A Hard Disk Drive (HDD) includes a write-inhibit signal that is generated by a head-disk interaction sensor during a write process that is integrated with a suspension of the HDD when fly-height modulation of the slider is detected during a write process. The suspension load beam includes a dimple and a laminated flexure. The laminated flexure includes a surface that is adapted to receive a slider and a surface that is adapted to contact the dimple. The head-disk interaction sensor is fabricated as part of the laminations of the flexure. The head-disk interaction sensor can be an accelerometer that senses an acceleration of the flexure when the slider contacts the disk of the disk drive and/or a pressure sensor that senses a pressure between the flexure and the dimple when the slider contacts the disk. A write-inhibit circuit is responsive to the sensor signal by inhibiting the write process.

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patent: 6046871 (2000-04-01), Schaenzer et al.
patent: 6181520 (2001-01-01), Fukuda
patent: 07-141804 (1995-02-01), None
Budde, Richard A., “Transducer Gimbal Structure”, Apr. 1995, U.S. Statutory Invention Registration No. H1424.
“Optimal Means for Generating a Write Inhibit in Hard Disk Drives in Response to External Shock Using Accelerometers”, Oct. 1996, IBM Technical Disclosure Bulletin, Volume No. 39, Issue No. 10, pp. 131-132.

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