Method and apparatus for generating a control signal

Details Method and apparatus for generating a control signal Method and apparatus for generating a control signal

1996-09-25

1997-10-14

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 64, 386 76, G11B 5584

Patent

active

056778074

ABSTRACT:
A method of generating a control signal is comprised of the steps of detecting a drum rotational amount on the basis of a switching signal which switches a plurality of rotary heads, detecting a displacement amount of a control signal on the basis of a signal indicative of the drum rotational amount and levels of reproduced signals from the plurality of rotary heads, detecting a rotary frequency of a capstan motor, generating a pseudo control signal by frequency-dividing a detected signal indicative of the rotary frequency of the capstan motor by a predetermined value, and correcting a phase of the pseudo-control signal generated on the basis of the signal indicative of the displacement amount of the control signal.

REFERENCES:
patent: 3733443 (1973-05-01), Iwawaki et al.
patent: 4306255 (1981-12-01), Misaki et al.
patent: 4644414 (1987-02-01), Yamada et al.
patent: 5012358 (1991-04-01), Kohsaka

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