Drivetec, Inc.

Dymek Corporation

Duane C Meulners

Herbert E Thompson

Ronald E Young

A positioning system for a magnetic disk storage system. A first and second lead screw connected to their respective stepper motors are mechanically connected by a lever arm that adds these motions. The first stepper motor is controlled by an open loop control circuit and the second stepper motor is controlled by a closed loop circuit that reads servo information off the magnetic disk. The head is constantly repositioned to follow track eccentricities and can accurately read very closely spaced tracks on non-rigid disks.

Fine positioning apparatus for floppy disk drive

A diagnostic recording, readable by a computer system for enabling a user without special knowledge, software, or equipment to check, isolate and identify hardware malfunctions within the system, has a track with magnetic signals recorded thereon that is centered within a normal track space. A pair of void spaces of equal width remain within the normal track space on opposite sides of the track and extend parallel thereto. The track and the adjacent void spaces have special widths for diagnostic purposes.

Growing community of inventors

San Jose, CA, United States of America

Duane C Meulners