Title:
スクランブルされたイベントに対するアクセスを管理する方法
Document Type and Number:
Japanese Patent JP3921598
Kind Code:
B2
Abstract:
A method for managing access to a scrambled event, selected from an electronic program guide, of a service provider (including broadcast television networks, cable television networks, digital satellite systems, and internet service providers). Access to the event is only achieved if the descrambling key is obtained from a digitally signed message associated with the event in the electronic program guide. Authentication of the electronic program guide provider involves decrypting the digital signature using a public key of the guide provider.
Inventors:
Eskisiogle, Ahmet Marsh
Application Number:
JP50292199A
Publication Date:
May 30, 2007
Filing Date:
June 05, 1998
Export Citation:
Assignee:
UQ, LLC
International Classes:
G09C1/00; H04H20/00; H04L9/08; H04L9/32; H04N7/16; H04N7/167
Domestic Patent References:
| JP8288940A | ||||
| JP9083888A | ||||
| JP9121340A | ||||
| JP9135435A |
Foreign References:
| WO1995028799A1 | ||||
| WO1996006504A1 |
Attorney, Agent or Firm:
Tadahiko Ito
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