JP4896371B2 - データストリームでの対話式アプリケーションの制御 - Google Patents
データストリームでの対話式アプリケーションの制御 Download PDFInfo
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- JP4896371B2 JP4896371B2 JP2003529308A JP2003529308A JP4896371B2 JP 4896371 B2 JP4896371 B2 JP 4896371B2 JP 2003529308 A JP2003529308 A JP 2003529308A JP 2003529308 A JP2003529308 A JP 2003529308A JP 4896371 B2 JP4896371 B2 JP 4896371B2
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8545—Content authoring for generating interactive applications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/52—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems during program execution, e.g. stack integrity ; Preventing unwanted data erasure; Buffer overflow
- G06F21/53—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems during program execution, e.g. stack integrity ; Preventing unwanted data erasure; Buffer overflow by executing in a restricted environment, e.g. sandbox or secure virtual machine
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/468—Specific access rights for resources, e.g. using capability register
-
- 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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
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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
- H04N21/43—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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4348—Demultiplexing of additional data and video streams
- H04N21/4349—Demultiplexing of additional data and video streams by extracting from data carousels, e.g. extraction of software modules from a DVB carousel
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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
- H04N21/43—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
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4351—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reassembling additional data, e.g. rebuilding an executable program from recovered modules
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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
- H04N21/43—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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
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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
- H04N21/43—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
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4433—Implementing client middleware, e.g. Multimedia Home Platform [MHP]
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/8166—Monomedia components thereof involving executable data, e.g. software
- H04N21/8173—End-user applications, e.g. Web browser, game
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Software Systems (AREA)
- Computer Security & Cryptography (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Description
1.現在のサービスのストリームからのデータを使用可能なフォーマットにデコードするストリームリーダーであって、典型的には、受信機のメモリ内の'モジュールキャッシュ'に要求されたデータ"モジュール"を記憶するストリームリーダーと、
2.受信機において実行するアプリケーションから要求を受信し、モジュールキャッシュにおいて要求されたデータを見つけようと試みる、又はフェッチ要求をストリームリーダーに渡すファイルシステムドライバーとを有する。
第一の実施態様は、カルーセルデコーダを、ストリームから更新されている装置において動作するサーバーとみなす。サーバーは、装置において動作するアプリケーションにファイルシステムアクセスを提供し、2つの動作モードであって、デコーダは、両方のモードにおいて、デコーダが有する最新データを提供するが、一方のモードにおいてだけ、ストリームからの更新を受けるデコーダである2つの動作モードを有する。サービス間の切り換えは、上述のモード間の変化を引き起こす。カルーセルは、サービスがカルーセルの全データソースを含む場合にしか、完全動作状態に入ることが出来ない。カルーセルは、多くの特定の状態を有する。以下にそれらを定義と共に列記する。
第二実施態様(または改善例)は、幾つかの関連タグにおいては不一致があるが、他の関連タグにおいては不一致がない状況において、カルーセルにおける"開始"モジュールと"停止"モジュールの混合を可能にすることである。この状況においては、一致するソースを備えるモジュールだけが、ストリームから更新され続けるだろう。他のエントリーは、変化前のままであるだろう。'誤った'PIDからのデータがシステムに入ることは許されない。これを実施する方法は、ルックアップテーブルによってタグ−PID変換を実行するものである。このテーブルは、PMTからのテーブルの関連タグおよびマスターPIDカラムを入力する、カルーセルのための最初の"マスター"サービスによって設定される。PMT中のエントリーは、異なるサービスにおいて動作する場合、テーブルの第三の"現PID"カラムにマップされる。モジュールを更新しようとするすべての試みにおいて、マスターPIDと現PIDとの間に不一致がある場合には、更新は失敗する。また、新しい獲得要求も、不一致によって失敗する。
Claims (8)
- 対話式アプリケーションを制御するための方法であって、
対話式アプリケーションを有するデータストリームを受け取り、
前記データストリームの変化を識別するために前記データストリームをモニターし、前記変化に応じて、前記対話式アプリケーションがファイルにアクセスするのを防止し、前記データストリームに存在するファイルを識別し、前記対話式アプリケーションが、前記データストリームに存在する前記ファイルだけにアクセスすることを可能にすることを特徴とする方法。 - 前記データストリームは、放送信号に含まれることを特徴とする請求項1に記載の方法。
- 前記方法は、コンピュータプログラムによって実行されることを特徴とする請求項1または2に記載の方法。
- 前記コンピュータプログラムは、デジタルテレビの受信機によって実行されることを特徴とする請求項3に記載の方法。
- 前記変化は、前記デジタルテレビの受信機がチャンネルを変更する場合に発生することを特徴とする請求項4に記載の方法。
- 対話式アプリケーションを制御するための装置であって、
対話式アプリケーションを有するデータストリームを受け取るための受信手段と、
前記データストリームをモニターするためのモニター手段であって、前記データストリームの変化後に前記対話式アプリケーションがファイルにアクセスするのを防止し、前記データストリームに存在するファイルを識別し、前記対話式アプリケーションが、前記データストリームに存在する前記ファイルだけにアクセスすることを可能にするように前記対話式アプリケーションを制御するためのモニター手段と、を有することを特徴とする装置。 - 前記装置は、集積回路を有することを特徴とする請求項6に記載の装置。
- 前記集積回路は、デジタルテレビの受信機の一部を形成することを特徴とする請求項7に記載の装置。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0122585.3A GB0122585D0 (en) | 2001-09-19 | 2001-09-19 | Control of an interactive application |
GB0122585.3 | 2001-09-19 | ||
GBGB0214735.3A GB0214735D0 (en) | 2001-09-19 | 2002-06-25 | Control of an interactive application |
GB0214735.3 | 2002-06-25 | ||
PCT/IB2002/003819 WO2003025746A1 (en) | 2001-09-19 | 2002-09-16 | Control of an interactive application in a data stream |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005503703A JP2005503703A (ja) | 2005-02-03 |
JP2005503703A5 JP2005503703A5 (ja) | 2009-04-09 |
JP4896371B2 true JP4896371B2 (ja) | 2012-03-14 |
Family
ID=9922337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003529308A Expired - Lifetime JP4896371B2 (ja) | 2001-09-19 | 2002-09-16 | データストリームでの対話式アプリケーションの制御 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1662390B1 (ja) |
JP (1) | JP4896371B2 (ja) |
DE (1) | DE60223572T2 (ja) |
GB (2) | GB0122585D0 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4875987B2 (ja) * | 2004-11-02 | 2012-02-15 | パナソニック株式会社 | アプリケーションプログラム実行装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5563648A (en) | 1994-04-28 | 1996-10-08 | Thomson Consumer Electronics, Inc. | Method for controlling execution of an audio video interactive program |
US5781228A (en) | 1995-09-07 | 1998-07-14 | Microsoft Corporation | Method and system for displaying an interactive program with intervening informational segments |
AU3722399A (en) * | 1998-05-06 | 1999-11-23 | Jcp Computer Services Ltd | Processing apparatus and method |
CN102291606B (zh) | 1999-03-04 | 2015-12-16 | 乐威指南公司 | 多个交互式电子节目向导的系统与方法 |
EP1224806B1 (en) | 1999-10-29 | 2003-11-19 | OpenTV, Corp. | System and method for recording pushed data |
-
2001
- 2001-09-19 GB GBGB0122585.3A patent/GB0122585D0/en not_active Ceased
-
2002
- 2002-06-25 GB GBGB0214735.3A patent/GB0214735D0/en not_active Ceased
- 2002-09-16 EP EP06110060.8A patent/EP1662390B1/en not_active Revoked
- 2002-09-16 DE DE60223572T patent/DE60223572T2/de not_active Expired - Lifetime
- 2002-09-16 JP JP2003529308A patent/JP4896371B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1662390A3 (en) | 2006-06-07 |
DE60223572D1 (de) | 2007-12-27 |
EP1662390A2 (en) | 2006-05-31 |
GB0214735D0 (en) | 2002-08-07 |
JP2005503703A (ja) | 2005-02-03 |
GB0122585D0 (en) | 2001-11-07 |
DE60223572T2 (de) | 2008-09-18 |
EP1662390B1 (en) | 2017-08-23 |
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