Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1990-01-03
1990-09-04
Faber, Alan
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 7806, 360 7811, G11B 555, G11B 2108
Patent
active
049549090
ABSTRACT:
A magnetic head is moved in the radial direction of a magnetic recording medium carrier by means of an actuator to record or reproduce data stored therein. The actuator is actuated by an instruction signal from a servo circuit through a computer. The servo circuit receives a position signal and a speed signal according to the movement and stopping of the actuator and generates digital signals having high and low level logical values as a result of a comparison of the position and speed signals with position-determining and speed-determining instruction signals from the computer. A calculator receives the digital signals and a clock signal from a clock signal generator and outputs a pulse signal to the computer when the digital signal takes the high level logical value and resets the counting operation when the digital signal takes the low level logical value.
REFERENCES:
patent: 3458786 (1969-07-01), Thompson
patent: 3530447 (1970-09-01), Lambert
patent: 3686650 (1972-08-01), Gleim et al.
patent: 4547822 (1985-10-01), Brown
Faber Alan
Garland Steven R.
Mitsubishi Denki & Kabushiki Kaisha
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