Spindle servo unit for disk playing device

Details Spindle servo unit for disk playing device Spindle servo unit for disk playing device

1988-12-21

1991-07-30

Envall, Jr., Roy N.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 4425, 360 7303, G11B 1700

Patent

active

050365088

ABSTRACT:
A spindle servo unit for disk playing device detects a synchronizing signal in an information signal read from a recording disk and generates a signal synchronized with the detected synchronizing signal. The generated signal is frequency-divided. An error signal is generated in accordance with the phase difference between the frequency-divided output, and the error signal is supplied to rotate the recording disk.

REFERENCES:
patent: 4338683 (1982-07-01), Furukawa et al.
patent: 4386300 (1983-05-01), Ogawa
patent: 4495474 (1985-01-01), Nishikawa et al.
Patent Abstracts of Japan, vol. 11, No. 32 (P-541) (2479), Japanese No. 61-202374, Jan. 30, 1987.
Patent Abstracts of Japan, vol. 7, No. 202 (P-221) (1347), Japanese No. 58-98881, Jun. 11, 1983.

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