A stationary card optical data storage device is described. Digital x-ray images were stored and retrieved at high data rates. Average density can be approximately 3 x 108 bits per in2.A card has certain advantages for medical data archiving.
James T. Russell,
"Stationavy Card Optical Digital Storage System", Proc. SPIE 0418, Picture Archiving and Communication Systems, (16 May 1983); doi: 10.1117/12.935957; https://doi.org/10.1117/12.935957