Authorization of services in a conditional access system

  • US 6,252,964 B1
  • Filed: 01/20/2000
  • Issued: 06/26/2001
  • Est. Priority Date: 04/03/1995
  • Status: Expired due to Term
First Claim
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1. Conditional access apparatus for giving a receiver conditional access to an instance of service received in the receiver, one or more entitlements to access the instance of service being given by one or more entitlement agents and the conditional access apparatus comprising:

  • entitlement agent establishment apparatus in the receiver for establishing at least one of the entitlement agents in the conditional access apparatus;

    entitlement specification apparatus in the receiver for specifying the one or more entitlements for the at least one entitlement agent, and wherein the entitlement agent establishment apparatus and the entitlement specification apparatus operate in response to further messages received in the receiver; and

    access granting apparatus in the receiver for granting access to the instance of service in response to a first message received in the receiver which indicates the entitlement agent and the entitlement only if the entitlement agent establishment apparatus has established the entitlement agent, and the entitlement specification apparatus has granted the entitlement, and wherein the entitlement agent establishment apparatus disestablishes the entitlement agent in response to a given message of the further messages.

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