Magnetic tape drive with displaceable head capable of a re-try o

Method and apparatus for controlling the stepping feed of an inf

Method and apparatus for determing desired rotational velocity o

Method and apparatus for determining head parameter for helical

Method and apparatus for motor control in a disk drive

Method and apparatus for reducing data loss errors in a magnetic

Method and apparatus for synchronizing timing signals for helica

Method and apparatus for tape speed override operation when reco

Method and apparatus for tracking control by checking timing bet

Method and circuit for detecting auto tracking find error in a v

Method of helical tape tracking adjustment using histogram of si

Motor speed control circuit for a videocassette recorder

Motor stabilizing control apparatus for use with motors, includi

Multiple sinusoidal seek servo system for reducing seek...

Multiple speed scanner servo system for protecting the heads and

Overlap track servo for dynamic position correction in a rotary-

Phase detector for a recorder/player using a conducting loop dri

Phase servo circuit

Pilot signal recording and reproducing system

Playback apparatus for correcting locking errors