INFORMATION RECORDING AND REPRODUCING SYSTEM

摘要: PURPOSE:To record even such data for requiring the security on an optical IC card by providing a ciphering key part of when information is recorded and reproduced at recording card. CONSTITUTION:The to be supplied 1 from personal computer 4 via reader/ writer 5. The ciphered in aquired this sent reader/writer 5 written 1. secret included Since not viewed outside, can decoded unless only used. are read put into Then