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:
May. 02, 2000
Filed:
Feb. 18, 1997
Applicant:
Inventor:
Albertus Feiken, TD Amstelveen, NL;
Assignee:
Koninklijke KPN N.V., Groningen, NL;
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
708144 ; 235380 ; 380 28 ; 705 41 ; 708145 ;
Abstract
A method is disclosed of modifying and/or extending the command set (READ, WRITE) of a smart card. Use is made of the attribute tables (100, 200, 300) associated with certain files and with the commands of the existing command set to modify the functions of the commands. Thus, non-standard functions may be implemented without the need to use additional, i.e. non-standard instructions.