Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1997-06-19
2000-06-20
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
318696, G11B 1920
Patent
active
060784571
ABSTRACT:
A method for driving a recording disc applies a DC excitation hold so that a rotor portion is stopped. Thereafter, a DC excitation frequency is gradually increased from a low frequency to a rated frequency and synchronizes with the rated revolution.
REFERENCES:
patent: 4882530 (1989-11-01), Kabune et al.
patent: 5235264 (1993-08-01), Kaneda et al.
patent: 5262709 (1993-11-01), Yasuda
patent: 5485070 (1996-01-01), Tominaga
Aono Yoshiyuki
Ezuka Masahisa
Fujitani Sakae
Suzuki Yuzuru
Habermehl James L
Minebea Co. Ltd.
Psitos Aristotelis M.
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