JPH09512675A - 条件付きアクセス情報アレンジメント - Google Patents
条件付きアクセス情報アレンジメントInfo
- Publication number
- JPH09512675A JPH09512675A JP7527635A JP52763595A JPH09512675A JP H09512675 A JPH09512675 A JP H09512675A JP 7527635 A JP7527635 A JP 7527635A JP 52763595 A JP52763595 A JP 52763595A JP H09512675 A JPH09512675 A JP H09512675A
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- 238000000034 method Methods 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 10
- 230000015654 memory Effects 0.000 claims description 113
- 230000004044 response Effects 0.000 claims description 11
- 230000006870 function Effects 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 3
- 244000309464 bull Species 0.000 claims 1
- 230000009977 dual effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 14
- 230000011664 signaling Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 12
- 238000007726 management method Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000001143 conditioned effect Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 4
- 230000002452 interceptive effect Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
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- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/42623—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific decryption arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/165—Centralised control of user terminal ; Registering at central
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
- Television Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Storage Device Security (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.権利付与管理および制御データを含む条件付きアクセス情報を伝送する方法 において、 Nバイトの条件付きアクセス・コードを形成し、 M個の異なるNバイトの条件付きアクセス・コードを連結し、 所定の論理状態の前記Nバイトの条件付きアクセス・コードまたは特別のNバ イトのコードの中の1つを選択し、 a)前記Nバイトの条件付きアクセス・コードまたは前記特別のNバイトのコ ードの中の選択された1つを含み、b)該選択されたコードと前記M個の異なる Nバイトの条件付きコードとを連結し、かつc)該連結されたコードと前記権利 付与および制御データとを連結するペイロードを形成し、および a)権利付与データを含むようなトランスポート・パケットを識別するヘッダ とb)前記ペイロードとを有するトランスポート・パケットを形成する ことを特徴とする権利付与管理および制御データを含む条件付きアクセス情報 を伝送する方法。 2.請求項1に記載の方法において、さらに加えて、NバイトのR個のグループ 全てが所定の論理状態のビットを有する(M+1)×Nバイトのコード(R、M 、Nは全て整数で、RXN≦(M+1)×Nである)を提供し、かつ前記ペイロ ードを形成するステップが、 a)前記Nバイトの条件付きアクセス・コードまたは全て1の論理状態のNバ イトのコードの中の1つを選択し、b)選択されたコードと前記M個の異なるN バイトの条件付きアクセス・コードとを連結し、かつc)前記(M+1)×Nバ イトのコードまたは連結コードを選択し、かつd)最後の選択コードと前記権利 付与管理および制御データとを連結することを特徴とする権利付与管理および制 御データを含む条件付きアクセス情報を伝送する方法。 3.権利付与データを含むようなパケットを識別するヘッダを有し、かつ前記権 利付与データを有するペイロードと条件付きアクセス・コードを含むペイロード ・ヘッダとを有する信号パケットに含まれた権利付与データを含むパケット信号 を処理するパケット信号受信機における装置において、 前記パケット信号を印加する手段(10〜12)と、 前記パケット信号に応答して、権利付与データを含むものとして識別された信 号パケットを選択し、かつ選択パケットからペイロードを抽出するトランスポー ト・プロセッサ(13〜15,19)と、 抽出ペイロードデータを受信したときにそれを記憶する記憶手段(17,18 )と、 加入者固有の条件付きアクセス・コードのための抽出ペイロードのペイロード ・ヘッダ・データを検査するように構成されており、かつ加入者固有のペイロー ドの検出の失敗の際に前記メモリ手段に抽出ペイロード・データを記憶すること を禁止する条件付きアクセス・フィルタ(30)と を備えていることを特徴とする装置。 4.請求項3に記載の装置において、前記メモリ手段に結合され、権利付与デー タを有するそれぞれの前記ペイロードから前記メモリ手段に記憶された権利付与 データを利用するスマート・カードをさらに含んでいることを特徴とする装置。 5.請求項3に記載の装置において、前記条件付きアクセス・フィルタは、 Nバイトの加入者固有の条件付きアクセス・コードを記憶するためのレジスタ と、 排他的Nバイトのグループにおける前記ペイロード・ヘッダ・データと前記レ ジスタ内に含まれた前記Nバイトの加入者固有の条件付きアクセス・コードとを 比較し、かつ前記加入者固有の条件付きアクセス・コードと前記排他的Nバイト のグループのいずれかとの一致がなされた場合、前記権利付与データを前記メモ リ手段に書き込むためのイネーブル信号を発生する比較器を含む手段と を備えていることを特徴とする装置。 6.請求項3に記載の装置において、前記条件付きアクセス・フィルタは、 Nバイトの加入者固有の条件付きアクセス・コードを記憶するためのレジスタ と、 a)前記ペイロード・ヘッダ・データの中の最初のNバイトが全て1の論理状 態のコードを含んでいるか否かを決定し、 b)前記最初のNバイトが全て1の論理状態のコードを含んでいるならば、前 記加入者固有の条件付きアクセス・コードの中のN−1バイトと排他的のNバイ トのグループにおける前記ペイロード・ヘッダ・データとを比較し、かつ前記加 入者固有の条件付きアクセス・コードの中のN−1バイトと前記排他的Nバイト のグループのいずれかのN−1バイトとの一致がなされた場合、前記権利付与デ ータを前記メモリ手段に書き込むためのイネーブル信号を発生し、 c)そうでなければ、排他的Nバイトのグループにおける前記ペイロード・ヘ ッダ・データと前記レジスタ内に含まれた前記Nバイトの加入者固有の条件付き アクセス・コードとを比較し、かつ前記加入者固有の条件付きアクセス・コード と前記排他的Nバイトのグループのいずれかとの一致がなされた場合、前記権利 付与データを前記メモリ手段に書き込むためのイネーブル信号を発生する比較器 を含む手段と を備えていることを特徴とする装置。 7.請求項6に記載の装置において、さらに加えて、前記ペイロード・ヘッダ・ データにおける所定数の前記条件付きアクセス・コードの中のNバイトのグルー プが同じ論理状態のものであるか否かを検出し、そうであるならば、前記イネー ブル信号を発生する検出器をさらに含んでいることを特徴とする装置。 8.請求項6に記載の装置において、さらに加えて、前記ペイロード・ヘッダ・ データにおける所定数の前記条件付きアクセス・コードの中のNバイトのグルー プが全て0値ビットを有するか否かを検出し、そうであるならば、前記イネーブ ル信号を発生する検出器をさらに含んでいることを特徴とする装置。 9.請求項3に記載の装置において、さらに加えて、前記ペイロード・ヘッダ・ データにおける前記条件付きアクセス・コードの全てのバイトが同じ論理状態も のであるか否かを検出し、前記ペイロード・ヘッダ・データにおける前記条件付 きアクセス・コードの全てのバイトが同じ論理状態ものであるならば、ペイロー ド権利付与データを前記メモリ手段に書き込むためのイネーブル信号を発生する 検出器を含んでいることを特徴とする装置。 10.請求項5に記載の装置において、Nバイトの加入者固有の条件付きアクセ ス・コードを記憶する前記レジスタはN 1バイトのレジスタを含み、かつ前記 条件付きアクセス・フィルタはさらに、前記N 1バイトのレジスタにそれぞれ 結合されたN入力ポートを有するマルチプレクサと、 前記N 1バイトのレジスタからのデータを比較器を含む前記手段に逐次供給 するためにその入力ポートを走査するように前記マルチプレクサを条件付ける計 数回路とを備えていることを特徴とする装置。 11.請求項3に記載の装置において、前記条件付きアクセス・フィルタは、第 1のモードで条件付きアクセス・コードを検出し、かつ第2のモードでビデオ成 分開始コードを検出するというデュアル機能を実行するようにプログラム可能で あることを特徴とする装置。 12.請求項11に記載の装置において、前記条件付きアクセス・フィルタは、 Nバイトの加入者固有の条件付きアクセス・コードを記憶するレジスタと、 Nバイトのビデオ成分開始コードを記憶するレジスタと、 制御信号に応答し、前記加入者固有の条件付きアクセス・コードまたは前記ビ デオ成分開始コードの中の1つを選択するマルチプレクサと、 前記マルチプレクサに結合され、Nバイトのグループにおける前記ペイロード ・ヘッダ・データと前記マルチプレクサに選択された前記加入者固有の条件付き アクセス・コードまたは前記ビデオ成分開始コードとを比較し、かつ前記加入 者固有の条件付きアクセス・コードと前記ペイロード・ヘッダのNバイトのグル ープとの一致がなされた場合、前記権利付与データを前記メモリ手段に書き込む ためのイネーブル信号を発生するかまたは前記ビデオ成分開始コードと前記ペイ ロード・ヘッダのNバイトのグループとの一致がなされた場合、開始コード指示 信号を発生する比較器を含む手段とを備えていることを特徴とする装置。 13.請求項12に記載の装置において、比較器を含む前記手段は前記第1のモ ードにおいて、 a)前記ペイロード・ヘッダ・データの中の最初のNバイトが全て1の論理状 態のコードを含んでいるか否かを決定すること、 b)前記最初のNバイトが全て1の論理状態のコードを含むならば、前記加入 者固有の条件付きアクセス・コードのN−1バイトと前記唯一のNバイトのグル ープのいずれかのN−1バイトとを比較し、かつ前記加入者固有の条件付きアク セス・コードのN−1バイトと前記唯一のNバイトのグループのいずれかのN− 1バイトとの一致がなされたならば、前記権利付与データを前記メモリ手段に書 き込むためのイネーブル信号を発生すること、 c)さもないと、唯一のNバイトのグループにおける前記ペイロード・ヘッダ ・データと前記レジスタ内に含まれた前記Nバイトの加入者固有の条件付きアク セス・コードとを比較し、かつ前記加入者固有の条件付きアクセス・コードと前 記唯一のNバイトのグループのいずれかとの一致がなされたならば、前記権利付 与データを前記メモリ手段に書き込むためのイネーブル信号を発生すること、 を機能的に実行するように構成されていることを特徴とする装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US232,794 | 1994-04-22 | ||
US08/232,794 US5619501A (en) | 1994-04-22 | 1994-04-22 | Conditional access filter as for a packet video signal inverse transport system |
PCT/US1995/003540 WO1995029560A1 (en) | 1994-04-22 | 1995-03-15 | Conditional access information arrangement |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007276897A Division JP4122370B2 (ja) | 1994-04-22 | 2007-10-24 | 条件付きアクセス情報アレンジメント |
JP2008140239A Division JP4404271B2 (ja) | 1994-04-22 | 2008-05-29 | パケット化トランスポート・ストリームを処理する方法 |
JP2008140240A Division JP4535344B2 (ja) | 1994-04-22 | 2008-05-29 | パケット化トランスポート・ストリームを処理する方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09512675A true JPH09512675A (ja) | 1997-12-16 |
JP4316008B2 JP4316008B2 (ja) | 2009-08-19 |
Family
ID=22874615
Family Applications (26)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52763595A Expired - Lifetime JP4316008B2 (ja) | 1994-04-22 | 1995-03-15 | 条件付きアクセス情報アレンジメント |
JP2007276897A Expired - Lifetime JP4122370B2 (ja) | 1994-04-22 | 2007-10-24 | 条件付きアクセス情報アレンジメント |
JP2008140240A Expired - Lifetime JP4535344B2 (ja) | 1994-04-22 | 2008-05-29 | パケット化トランスポート・ストリームを処理する方法 |
JP2008140239A Expired - Lifetime JP4404271B2 (ja) | 1994-04-22 | 2008-05-29 | パケット化トランスポート・ストリームを処理する方法 |
JP2009131758A Granted JP2009194935A (ja) | 1994-04-22 | 2009-06-01 | 条件付きアクセス情報アレンジメント |
JP2009219983A Expired - Lifetime JP4420298B2 (ja) | 1994-04-22 | 2009-09-25 | パケット化データ・ストリームの処理方法 |
JP2009220003A Expired - Lifetime JP4458438B2 (ja) | 1994-04-22 | 2009-09-25 | パケット化データ・ストリームの処理方法 |
JP2009222719A Expired - Lifetime JP4475475B2 (ja) | 1994-04-22 | 2009-09-28 | パケット化データ・ストリームの処理方法 |
JP2009244330A Expired - Lifetime JP4475476B2 (ja) | 1994-04-22 | 2009-10-23 | パケット化データ・ストリームの処理方法 |
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