Title:
スクランブルされたデータのアクセス権を入力、無効化及び/又は消去するプロトコル、並びに対応するアクセス・コントロール・モジュール
Document Type and Number:
Japanese Patent JP4339697
Kind Code:
B2
Abstract:
The invention relates to a protocol for disabling/erasing access rights to scrambled data. According to the invention, the access rights entered in an access control module comprise the following variables: right identification variable (R ID), action date variable (AD V) and right status variable (S V). The status variable can have one of three encoded values, namely enabled, disabled or erased right. The inventive protocol consists in: transmitting (A) at least one access right management message comprising the right identification variable (R IDx), the action date variable (AD Vx) and the status assignment variable (S Vx), the latter corresponding to a enabled, disabled or erased right; assigning (B) the action date (AD Vx) of the message to the action date (AD V) of the right entered; and allocating (C) the status assignment variable (S Vx) of the message, corresponding to an enabled, disabled or erased access right, to the status variable (S V) of the entered access right. The invention is suitable for pay television.
Inventors:
Becker, Claudia
Code, Andre
Febrier, Pierre
Gione, Chantal
Code, Andre
Febrier, Pierre
Gione, Chantal
Application Number:
JP2003575581A
Publication Date:
October 07, 2009
Filing Date:
March 06, 2003
Export Citation:
Assignee:
Biaccess
International Classes:
G06F21/60; G06K19/00; H04L29/06; H04N7/16
Domestic Patent References:
| JP2000287191A | ||||
| JP2000004427A |
Foreign References:
| US5748732 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Ryu Kobayashi
Masaya Nishiyama
Jun Tsuruta
Tetsuro Shimada
Ryu Kobayashi
Masaya Nishiyama