Drive device

Details Drive device Drive device

1987-03-31

1988-10-18

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318696, 360 721, 360 78, G05B 1940

Patent

active

047790326

ABSTRACT:
A recording apparatus having a recording head for recording video signals on a magnetic disc as the disc rotates, comprises a servo motor, a circuit for generating a feedback signal representing the rotating state of the servo motor, a head moving member for changing over the recording position of the recording head relative to the magnetic disc, and a control circuit for performing a first sequence of controlling the rotating state of the servo motor in response to the feedback signal and a second sequence of controlling the moving state of the head moving member time-dividedly in response to generation of the feedback signal, so that the apparatus is constructed without the necessity of using a standard timing generating source solely used for controlling the movement of the head.

REFERENCES:
patent: 4146910 (1979-03-01), Oliver et al.
patent: 4524381 (1985-06-01), Konishi
patent: 4608613 (1986-08-01), Miyake

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