Database system with local information remotely supported with d

Details Database system with local information remotely supported with d Database system with local information remotely supported with d

1997-10-06

1998-07-28

Buczinski, Stephen C.

Cryptography

Cryptanalysis

340990, 340995, 3644492, 3644494, H04L 900, G08G 1123, G01C 2100

Patent

active

057871701

ABSTRACT:
A database system comprises an individual station with berth means for receiving an optically readable information carrier with local information. The system reads the carrier and furthermore receives remotely supplied secondary information. It has a processor for processing both local information and secondary information to produce output information, and a user interface for presenting said output information to a user. In particular, the carrier has a read-only part, and a write part for storage of at least one decryption key. The processor is arranged for decrypting the secondary information using said at least one decryption key.

REFERENCES:
patent: 4595950 (1986-06-01), Lofberg
patent: 5172321 (1992-12-01), Ghaem et al.
patent: 5185857 (1993-02-01), Rozmanith et al.
patent: 5247575 (1993-09-01), Sprague et al.
patent: 5371792 (1994-12-01), Asai et al.
patent: 5394469 (1995-02-01), Nagel et al.
patent: 5450489 (1995-09-01), Ostrover et al.
patent: 5563947 (1996-10-01), Kikinis

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