Time base control system for a spindle servo

Details Time base control system for a spindle servo Time base control system for a spindle servo

1987-11-16

1989-04-25

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Multiple mode systems

318317, 318619, 360 7814, 360 7303, 369 44, G05B 1118

Patent

active

048251372

ABSTRACT:
A time base control system for a spindle servo motor in which the time base is both coarsely controlled and finely controlled. According to the invention, when the recording head is alternately tracking and jumping tracks, the controllable range of the fine tuning is widened and the course tuning is gradually increased.

REFERENCES:
patent: 3924268 (1975-12-01), McIntosh et al.
patent: 3983467 (1976-04-01), Bossons et al.
patent: 4106058 (1978-08-01), Romegs et al.
patent: 4310914 (1982-01-01), Riddle
patent: 4562562 (1985-12-01), Moriya et al.
patent: 4614986 (1986-09-01), LaBuddle

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