Method and apparatus for fine position adjustment using...

Details Method and apparatus for fine position adjustment using... Method and apparatus for fine position adjustment using...

2005-08-30

2005-08-30

Faber, Alan T. (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

C360S075000, C360S053000

Reexamination Certificate

active

06937414

ABSTRACT:
A system and method for enabling a programmed phase change in a servo track writer (STW) clock providing signals for writing information to a servo track, the phase change programmed to occur in one or more large or small phase bumps in either positive and negative directions, whereby a large phase jump is defined as the largest block of bit unit that can be handled without introducing noise into the system, and a smaller phase bump that is the smallest incremental bit unit that may be programmed to change the servo write clock phase until a final phase offset is reached.

REFERENCES:
patent: 4996608 (1991-02-01), Widney
patent: 5903404 (1999-05-01), Tsurumi et al.
patent: 6172830 (2001-01-01), Leonard
patent: 6674593 (2004-01-01), Jolly et al.
“Regenerative Clock Technique for Servo Track Writers”, IBM Technical Disclosure Bulletin, Oct. 1990, pp. 310-311.

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