Servo data decoder for any amplitude dependent servo data encodi
Servo motor control circuit
Single cycle positioning system
Slow-speed servomechanism
Spindle motor control system for magnetic disk apparatus
Spindle motor controlling circuit of an optical disk system
Synchronous rotation control system of magnetically recording di
Time-discrete phase-locked loop
Torque ripple reduction for a voltage mode motor controller
Transducer system with increased tracking capability
Variable-frequency AC induction motor controller