Method and apparatus for sensing position of a tape head in...

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head

Reexamination Certificate

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C360S078020, C250S205000

Reexamination Certificate

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07002771

ABSTRACT:
A method for sensing position that comprises generating light, eclipsing the light according to position, sensing the amount of light not eclipsed, and inferring position according to the sensed amount of light.

REFERENCES:
patent: 4176381 (1979-11-01), de Niet et al.
patent: 4677505 (1987-06-01), Nukada et al.
patent: 5592351 (1997-01-01), Carter

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