Rotary recording/playback head angular position correction appar

Details Rotary recording/playback head angular position correction appar Rotary recording/playback head angular position correction appar

1987-03-25

1990-04-24

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 70, 360 7712, G11B 1514

Patent

active

049204335

ABSTRACT:
An angular position indicating signal generator for a data reproduction machine having a rotary element for recording and reproducing data including a reference signal having a predetermined delay time. The angular position indicating signal generator includes an angular position detection circuit for detecting the angular position of the rotary element relative to the rotary plane of the rotary element, a counter circuit for detecting the time difference between the rotary element and the reference signal, a memory circuit for storing the count of the counter circuit, and a delay circuit for automatically compensating the detected output of the angular position detection circuit in response to the count stored in the memory circuit.

REFERENCES:
patent: 4361856 (1982-11-01), Okamoto
patent: 4630136 (1986-12-01), Ogawa
patent: 4688114 (1987-08-01), Tokuyama
patent: 4695781 (1987-09-01), Ito
patent: 4706137 (1987-11-01), Tanoka
patent: 4777543 (1988-10-01), Nishijima et al.

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