OPTICAL MEMORY SYSTEM FOR INFORMATION RETRIEVAL FROM FLUORESCENT MULTILAYER OPTICAL CLEAR CARD OF THE ROM-TYPE

摘要

A multilayer fluorescent optical storage medium (203) has data layers (210) with fluorescent pits (211, 321) for storing the information. The pits (211, 321) on each of the layers (211) are organized to define a plurality of stills (316). Each stack of stills (316) can be read without lateral movement of the reading head. An eight-to-ten code for encoding information to be stored is also used.