DATA TRANSFER BETWEEN CARD AND DATA PROCESSING UNIT

摘要

The card (1) used in the device for the transfer of data between a data processing unit (17) and the card (1) includes a rotationally symmetrically optical memory (3). The data is stored in an at least substantially circular track of the optical memory (3). The transfer of data between a scanning means (13) and the optical memory (3) is realized by rotating at least the optical memory about its axis of rotational symmetry. The card (1) also includes a microelectronic circuit (20) which can also communicate with the data processing unit via transfer means (19).