The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 1998
Filed:
Oct. 06, 1997
Applicant:
Inventor:
Franciscus J Op de Beek, Amersfoort, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ; G08G / ; G01C / ;
U.S. Cl.
CPC ...
380-4 ; 340990 ; 340995 ; 3644492 ; 3644494 ;
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.