Data recording device for motion picture film
Data recording system for optical memory tape
Data storage device container
Device for scanning information tracks on a record carrier
Digital recorder for processing in parallel data stored in multi
Digital recorder for processing of parallel data stored in multi
Double-disk optical recording medium
Double-layer optical disk, recording method and manufacturing me
Drive apparatus for tape-like optical recording medium
Dual input telescope for multi-beam optical record and playback
Dual-layered optical disc and pickup head
Dynamic switching speed control