Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Track follower system employing an optical scanner with automatic control of a rotatably movable phase grating used for the generation and positioning of read beam spots

Track follower system employing an optical scanner with automatic control of a rotatably movable phase grating used for the generation and positioning of read beam spots

US Patent 4686663 · Granted Aug 11, 1987

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method and apparatus for eliminating disturbances encountered during scanning of1998
Apparatus for braking a spindle motor in a disc playback system1998
Resilient scanning head support made of deformable material1996
Signalization of types of defects of an optical information carrier1996
Method for the recording and reproducing of data1995
Audio signal reproduction apparatus with frequency response dependent upon error1995
Method for measuring and regulating the radial and tangential angles of a light 1995
Apparatus with adjustable isolation resilience consumer electronics1994
Method for reducing access time in a CD-player with a memory by storing compress1993
CD apparatus with dynamic function generation1991
Record player with means for capturing recording and scanning angle1988
Optical scanner and reader for information contained in light reflected from mov1988