Head position detector with optical slit pattern

Details Head position detector with optical slit pattern Head position detector with optical slit pattern

2008-03-30

2008-12-09

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077120, C360S240000

Reexamination Certificate

active

07463444

ABSTRACT:
A system and method that directs a transducer to a home position while taking into account whether a light source, used to detect light interruption is inoperative. The method for the system including a light source, a detector configured to receive signals from the light source, a transducer that reads signals from a magnetic tape and a plurality of structures coupled to the transducer and configured to pass in opposition to the detector.

REFERENCES:
patent: 4291346 (1981-09-01), Beecroft
patent: 5270529 (1993-12-01), Shudo
patent: 5592351 (1997-01-01), Carter
patent: 6480351 (2002-11-01), Leonhardt et al.
patent: 7002771 (2006-02-01), Christie et al.
patent: 2002/0057523 (2002-05-01), Sakaguchi
PCT Publication WO8909988A1 of Dolby et al., Oct. 19, 1989.
Japanese Patent Publication 09-306123 of Tsuneo et al., Nov. 21, 1997.
English Language Abstract of Japanese Patent Publication 09-306123.
Machine translation of Japanese Patent Publication 09-306123.

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