Title:
条件付きアクセス情報アレンジメント
Document Type and Number:
Japanese Patent JPH09512675
Kind Code:
A
Abstract:
The present invention is a system/method for layered entitlement data transmission/reception. A receiver embodiment includes a packet transport processor for selecting packets having payloads containing a conditional access payload header and a remaining payload of entitlement data. Respective payload headers include groups of bytes which are coded in a manner to allow or disallow the respective receiver from processing the entitlement data. A conditional access filter preprogrammed with a subscriber specific conditional access codeword examines respective byte groupings of the conditional access header for a match with the subscriber specific conditional access codeword. Only if a match occurs is the processor permitted to process the entitlement data.
Inventors:
チャネイ，ジョン，ウイリアム
デイス，マイケル，スコット
テイマー，グレゴリー，ジョージ
ヘイリー，ジェイムズ，エドウィン
デイス，マイケル，スコット
テイマー，グレゴリー，ジョージ
ヘイリー，ジェイムズ，エドウィン
Application Number:
JP52763595A
Publication Date:
December 16, 1997
Filing Date:
March 15, 1995
Export Citation:
Assignee:
トムソン コンシユーマ エレクトロニクス インコーポレイテツド
International Classes:
H04N5/00; H04N5/44; H04N7/16; H04N7/167; H04N21/266; H04N21/418; H04N21/426; H04N21/4385; H04N21/4405; H04N21/4623; H04N21/4627; (IPC1-7): H04N7/16
Attorney, Agent or Firm:
谷 義一 （外１名）