Jerry R Hodges

US Patent:

7230788, Jun 12, 2007

Filed:

Nov 10, 2004

Appl. No.:

10/985434

Inventors:

Turguy Goker - Solana Beach CA, US
Jerry Hodges - Riverside CA, US
Patrick H. McCormack - Costa Mesa CA, US

Assignee:

Certance, LLC - Costa Mesa CA

International Classification:

G11B 21/02

US Classification:

360 75

Abstract:

A system and method for damping the motion of the head of a tape drive is disclosed. The method includes measuring the position of the head over time with a position sensor; damping the motion of the head based on the measured position of the head over time; and tuning the damping by varying a parameter of the position sensor.

US Patent:

7477474, Jan 13, 2009

Filed:

Mar 28, 2007

Appl. No.:

11/692723

Inventors:

Turguy Goker - Solana Beach CA, US
Ming-chih Weng - Los Angeles CA, US
Jerry Hodges - Riverside CA, US

Assignee:

Quantum Corporation - San Jose CA

International Classification:

G11B 5/584

US Classification:

360 7712

Abstract:

The present invention, in particular embodiments, is directed to methods, apparatuses and systems that facilitate recording of servo signals on a recording medium such as magnetic tape with high accuracy. Variation of inter-frame and intra-frame placement is substantially reduced by writing successive frames or sub-frames based on a detection of a previously-written frame or sub-frame by a read element. Appropriate placement of the read element in relation to servo write elements, on a multi-gap servo write head, ensures the correct placement of subsequent frames on the recording medium.