Inventor
ZIMMERMANN VOLKER
DE13 patents
⚠️ This page may combine multiple inventors who share the name “ZIMMERMANN VOLKER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
10 patentsUS4217612AAug 12, 1980
Servo system for track accessing and track following in a disk drive
IBM38 citations90
US4045696AAug 30, 1977
Rotor stator assembly for a low inertia stepping motor
IBM49 citations90
US4514667AApr 30, 1985
Method and apparatus for the constant speed control of brushless DC motors
IBM37 citations89
US4072888AFeb 7, 1978
Method of controlling a stepper motor
IBM42 citations87
US4580176AApr 1, 1986
Adaptive equalization circuit for magnetic recording channels utilizing signal timing
IBM17 citations72
US4396960AAug 2, 1983
Servo track following control for magnetic heads, and method for compensating uniform disturbance variables
IBM17 citations71
US4065708ADec 27, 1977
Method and apparatus for determining stepping motor parameters from induced voltages
IBM16 citations71
US4438467AMar 20, 1984
Magnetic disk track following servo burst amplitude drop compensation
IBM7 citations65
US4744683AMay 17, 1988
Revolving endless bands comprising means for compensating for a displacement perpendicular to their direction of movement
IBM2 citations61
US4664543AMay 12, 1987
Device for monitoring and compensating for changes in the flight time of the print hammers of impact printers
IBM4 citations60