197995 ⎘
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor; Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires , e.g. belts, spooled tapes or films of quasi-infinite extent for moving-picture soundtracks, i.e. cinema
Method and apparatus for data storage
#2Organization of archival elements for analog/digital hybrid data on film
#3Optical sound track scanner system
#4Anamorphic three-perforation imaging system
#5Anamorphic three-perforation imaging system