Phase detector for a recorder/player using a conducting loop dri

Details Phase detector for a recorder/player using a conducting loop dri Phase detector for a recorder/player using a conducting loop dri

1995-05-23

1998-04-28

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Synchronizing moving-head moving-record recorders

360 7713, 360137, 32420713, G11B 2104

Patent

active

057453160

ABSTRACT:
In an electronically commutated head drum motor in combination with a motor control circuit, commutation control and tacho signals are generated from the commutation of winding strands. One of the winding strands is used for the phase detection of the read/write heads arranged on the perimeter of the rotating head drum. A commutation signal is derived from the commutation of this winding strand and the commutation signal is set in relation to the reference signal of a signal track to be recorded or scanned.

REFERENCES:
patent: 3670113 (1972-06-01), Bragas
patent: 4651067 (1987-03-01), Ibo et al.
patent: 4930025 (1990-05-01), Oberjatzas
patent: 5142208 (1992-08-01), Curran et al.
patent: 5193146 (1993-03-01), Kohno
patent: 5231548 (1993-07-01), Yamada et al.

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