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:
Jan. 24, 2012
Filed:
May. 22, 2009
Grahame M. Falvey, Graz, AT;
Christian Koller, Graz, AT;
Gregor Kopesky, Graz, AT;
Gerhard Tüchler, Graz, AT;
Grahame M. Falvey, Graz, AT;
Christian Koller, Graz, AT;
Gregor Kopesky, Graz, AT;
Gerhard Tüchler, Graz, AT;
Spielo International Austria GmbH, Lübbecke, DE;
Abstract
A secure smart card or other secure modular memory device is plugged into (or otherwise connected to) a port of a game controller board internal to a gaming machine, where it is not accessible to a player. The smart card is programmed to detect an encrypted 'challenge' message from the host CPU and output an encrypted 'response.' If the host CPU determines that the response has the expected properties, then the host CPU verifies that the game program (an application program) is also is authentic, and the game can be played. The challenge/request exchange may be performed periodically to ensure the smart card is still installed. If the response is improper, then the host CPU will issue a halt command to halt play of the game.