Secure copy method and device for stored programs

Selective disk partitioning/duplicating method for duplication a

Self-raid system using hard disk drive having backup head...

Self-writing of servo patterns in disk drives

Simultaneous contact duplication of a plurality of magnetic copy

Stabilized bias system for magnetic tape read and write heads

Stray field and DC remanent suppression in high-speed magnetic t

Synchronous duplicate video recording apparatus

System and method for high speed video tape reproduction

System for magnetic contact duplication

System for recording from live source or dubbing to multiple tap

System for safeguarding magnetically recorded data

System for synchronizing audiotape and videotape machines

System for synchronizing plural data storage devices to a common

System, method, and apparatus for forming a patterned media...

System, method, and apparatus for forming a patterned media...