| US 7,577,846 B2 | ||
| Mechanism of matching between a receiver and a security module | ||
| André Kudelski, Lutry (Switzerland); and Marco Sasselli, Chardonne (Switzerland) | ||
| Assigned to Nagravision SA, Cheseaux-sur-Lausanne (Switzerland) | ||
| Filed on Jun. 10, 2002, as Appl. No. 10/165,915. | ||
| Application 10/165915 is a continuation in part of application No. 09/647751, filed on Oct. 04, 2000, abandoned. | ||
| Prior Publication US 2002/0170054 A1, Nov. 14, 2002 | ||
| Int. Cl. G06F 21/00 (2006.01); H04N 7/167 (2006.01) | ||
| U.S. Cl. 713—185 [713/189; 380/241; 725/31] | 38 Claims |
| 1. A pay television reception system, comprising:
a plurality of receivers; and
a plurality of security devices, wherein
the plurality of receivers are configured to receive descrambling information from the plurality of security devices,
a security device of the plurality of security devices is coupled to a receiver of the plurality of receivers forming a receiver
and security device pair,
a unique and constant encryption key is assigned to and stored in a non-volatile memory in the receiver and programmed into
the security device such that the receiver and security device form a unique receiver and security device pair,
at least some information received from the security device is encrypted by the unique and constant encryption key, and
the receiver includes a personal number stored in the security device of the formed receiver and security device pair, such
that the receiver is able to verify the conformity of the unique receiver and security device pair by verifying the personal
number.
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