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:
Oct. 11, 2011
Filed:
May. 24, 2007
Karl Osen, Dardagny, CH;
Nicolas Fischer, Versoix, CH;
Karl Osen, Dardagny, CH;
Nicolas Fischer, Versoix, CH;
Nagravision S.A., Chesaux-sur-Lausanne, CH;
Abstract
Example embodiments relate to a security device having two communication interfaces sharing at least one pin, each interface being capable of operating according to either of two predetermined communication protocols. The security device may further include a frequency detector to detect the frequency of a clock signal on the shared pin. Depending on the value of the detected frequency, and to which of a plurality of predetermined frequency ranges the detected frequency pertains, the security device may function according to one of the two predetermined communication protocols, operating at two different frequencies.