Inventor

BARNARD JAMES A

US24 patents

⚠️ This page may combine multiple inventors who share the name “BARNARD JAMES A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BARNARD JAMES A

EASTMAN KODAK CO

Quasi-constant linear-velocity disk having corresponding radii of adjacent annular zones related by a rational number for distributing prerecorded indicia to form a coherent write clock signal

Hybrid optical disc construction

DRDW differential phase tracking method and apparatus

Apparatus and method for differential tracking in a magneto-optic data storage system using mark edge detection

Magneto-optic readout using a polarization-preserving optical fiber

Disk cartridge adapted for use with different disk drives

Hybrid optical disc construction

Copy protection using multiple security levels on a programmable CD-ROM

Optical tape recording media with integral dust-defocusing transparent film

Single laser direct read after write system (draw)

Optical disc write/read employing passive focus maintenance

Phase-change recording element for write once applications

Optical discs with cover sheets and pressure equalization of the enclosed air

Dynamic tracking control in an optical recording system by diffraction-based mark formation detection

Optical discs with cover sheets and dynamic pressure stabilization of the enclosed air

Air sandwiched optical discs with closable pressure relief holes

Diffraction-based direct read during write using magneto-optic recording media

Optimized linear motors for focus/tracking actuators in optical disk drives

Focus/tracking actuator with moving-magnet motors

Clock resynchronization after a track jump

GEN MOTORS CORP

Air bag module assembly

Method for assembling heat exchangers

Regenerator matrix structure

Conveyorized fin accumulator