Abstract: This document discloses a case for holding storage media, particularly data cassettes, having a top part and a bottom part that are joined to each other, whereby at least one section, preferably four sections, is/are provided inside the case in order to hold at least two storage media, preferably four to twenty storage media.

Abstract: The invention relates to a storage medium for storing information/data, wherein the storage medium comprises a dielectric storage material, more particularly a disk-shaped storage material on which a metal ion donor medium is arranged or can be applied on at least one side thereof. Metal ions can be transferred from the donor medium onto the storage medium by exposing the storage medium to radiation, more particularly to laser radiation. The invention also relates to a storage medium for storing information/data, wherein the storage medium comprises a dielectric storage material, more particularly a disk-shaped storage material having at least one local metal ion doping, wherein the metal ions can be converted into metal particles and/or metal particles agglomerations by means of radiation, more particularly laser radiation.

Abstract: An optical storage system capable of use as a business card or a credit card of a rectangular card lying flat against an optical storage medium which can have a circular track for the optical storage of data. Symmetrical fastening elements around the whole optical storage medium secure the card and the optical storage medium together in two positions at right angles to one another. In one position the system has a rectangular configuration corresponding to that of a card. In the second position arcuate ends of the optical storage element lie along the longitudinal edges of the card to enable the system to be placed in a reader or writer for the optical data.