Method to bind the use of a television receiver to a particular network

摘要

A method to bind the use of a digital audio/video service data receiver to a network on which at least one services provider broadcasts access controlled and free digital audio/video services streams, the method having the steps: receiving by the receiver a periodic signal transmitted by a conditional access system server via the network, said periodic signal being processed by a run time software embedded in the receiver to check legitimacy of the network; displaying services available on the network only if said run time software recognizes the periodic signal as indicating network legitimacy; and checking operability of the run time software and if necessary taking actions to enforce limitation of using the receiver on the network checked as legitimate. The invention further discloses a receiver bound to a specific network configured to perform the method.

主权项

1. A method to bind the use of a digital audio/video receiver to a network, the method comprising the steps of:
receiving by the digital audio/video receiver a periodic signal transmitted by a network beacon via a network on which at least one service provider broadcasts access-controlled or free-to-air digital audio/video services streams, said periodic signal being processed by a run time software embedded in the receiver to check legitimacy of the network; displaying services available on the network only if said run time software recognizes that the periodic signal indicates a legitimate network; and checking operability of the run time software and if necessary enforcing a limitation on using the receiver on the network; wherein the periodic signal transmitted by a network beacon comprises security messages encrypted with a key known by the run time software; and wherein each of the security messages contains a unique tag stored by the run time software, said tag changing regularly to prevent replaying a same security message.