| 摘要 |
<p>PURPOSE:To record a key used in encoding or the address on a data recording part on an IC memory by together mounting an integrated circuit part and an optical data recording part on one card and adding a CPU, an encoding circuit, a random number generating circuit and the IC memory to the integrated circuit part. CONSTITUTION:An optical card is loaded with a data recording part 1 irradiating a card base material with laser beam to write data on the card base material and irradiating the same with weak laser beam to make it possible to read the recorded data by the reflected beam thereof and a modularized integrated circuit 2. The IC module 2 is loaded with a CPU 9, a random number generating circuit 8, an encoding circuit 5, a small capacity IC memory 7, an input interface 4 and an output interface 6. The key used in encoding, the recorded address on an optical memory 1 and the used address of the encoding circuit 5 are recorded on the IC memory 7.</p> |
