Recording disc rotary drive control apparatus

Details Recording disc rotary drive control apparatus Recording disc rotary drive control apparatus

1985-03-18

1987-07-14

Faber, Alan

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369111, 369240, 360 73, G11B 1924

Patent

active

046807462

ABSTRACT:
A low-cost recording disc rotary drive control apparatus having a simple circuit configuration employing no voltage divider or frequency-to-voltage converter. A position pulse signal with a period proportional to a position detecting signal produced by a position detecting device is generated, and a rotational pulse signal having a frequency proportional to the rate of rotation of the motor is generated. The supply of a control signal to the motor is effected while supply of an accelerating signal thereto is suspended using a switching device.

REFERENCES:
patent: 4190860 (1980-02-01), Somers
patent: 4223349 (1980-09-01), Dakin
patent: 4236050 (1980-11-01), Winslow
patent: 4439849 (1984-03-01), Naleshima

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