Tracking control device

Details Tracking control device Tracking control device

1987-03-10

1989-02-21

McElheny, Jr., Donald

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369 46, G11B 709

Patent

active

048072079

ABSTRACT:
Tracking control device in which a tracking error signal for controlling the position of a data detecting point with a driving circuit is added to a warbling signal. The warbling signal is separated from an input signal to the drive means by a separating circuit and is utilized to detect and control the gain of the tracking servo loop. The application of the input signal to the separating circuit is interrupted when the data detecting point is located between tracks so that the tracking servo is stable at all times.

REFERENCES:
patent: 3932700 (1976-01-01), Snopko
patent: 4271334 (1981-06-01), Yardy
patent: 4330880 (1982-05-01), Van Dijk
patent: 4397010 (1983-08-01), Nabeshima
patent: 4471477 (1984-09-01), Bierhoff
patent: 4482989 (1984-11-01), Bierhoff
patent: 4494154 (1985-01-01), Akiyama
patent: 4531206 (1985-07-01), Kimura
patent: 4539665 (1985-09-01), Iso et al.
patent: 4628497 (1986-12-01), Bierhoff

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