Storage medium track pitch detector

Details Storage medium track pitch detector Storage medium track pitch detector

1981-12-10

1985-03-12

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 54, G11B 382, G11B 390

Patent

active

045049394

ABSTRACT:
Method and apparatus for measuring the spacing between adjacent information tracks on a recording medium. A spot of light is projected onto at least a portion of a first track and maintained in a constant spacing from a second track. A photodetector detects the amount of light reflected off of the disc from the spot in a predetermined direction, and provides an electrical signal as an output. The photodetector output provides a measurement of the track-to-track spacing of the recording medium.

REFERENCES:
patent: 4167024 (1979-09-01), Hamisch
patent: 4283777 (1981-08-01), Curry et al.
patent: 4290122 (1981-09-01), Bates et al.

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