An optical card for storing a large amount of data in an optically readable manner, including a plurality of tracks formed in a data record layer in parallel with each other, each track being divided into a data record area and an address record area, and identifiers each recorded in address record areas...http://www.google.fr/patents/US5113061?utm_source=gb-gplus-shareBrevet US5113061 - Optical card having an identifier for identifying track construction and apparatus for writing and/or reading data on and/or from the optical card
Optical card having an identifier for identifying track construction and ...
