198143 ⎘
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; Record carriers characterised by shape, structure or physical properties, or by the selection of the material; Shapes of record carriers other than disc shape Cylindrical or shaft-shaped
Optical medium having a linear track
#2Information storage device and storage media
#3RECORDING-MEDIUM DRIVING DEVICE
#4Three-dimensional storage medium
#5Electronic apparatus having a cylindrical storage device
#6Multi-stack rolled-up information carrier
#7Optical data-storage apparatus employing optical media with three-dimensional data pattern