DE19957466A1 - Cinema film distribution system uses digital transmission of film and keys gives secured perfect copy in all locations - Google Patents

Cinema film distribution system uses digital transmission of film and keys gives secured perfect copy in all locations

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Publication number
DE19957466A1
DE19957466A1 DE19957466A DE19957466A DE19957466A1 DE 19957466 A1 DE19957466 A1 DE 19957466A1 DE 19957466 A DE19957466 A DE 19957466A DE 19957466 A DE19957466 A DE 19957466A DE 19957466 A1 DE19957466 A1 DE 19957466A1
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DE
Germany
Prior art keywords
film
cinema
keys
secured
distribution system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19957466A
Other languages
German (de)
Inventor
Wolfgang Ruppel
Hans-Heiner Gaus
Chrisoph Moldrzyk
Michael Dutka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Telekom AG
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Deutsche Telekom AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche Telekom AG filed Critical Deutsche Telekom AG
Priority to DE19957466A priority Critical patent/DE19957466A1/en
Priority to PCT/EP2000/005989 priority patent/WO2001039500A1/en
Publication of DE19957466A1 publication Critical patent/DE19957466A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2381—Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network
    • 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
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
    • 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, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8106—Monomedia components thereof involving special audio data, e.g. different tracks for different languages
    • 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
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8352—Generation of protective data, e.g. certificates involving content or source identification data, e.g. Unique Material Identifier [UMID]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
    • 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
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor

Abstract

The cinema film distribution system uses a symmetrical public key to obtain film copies distributed over a data network and an asymmetrical key for the playing of compressed cinema films using a certificate sent for use with a smart card (SC) .

Description

Die Erfindung betrifft ein Verfahren zur elektronischen Verteilung von Kinofilmen.The invention relates to a method for the electronic distribution of cinema films.

Der Spielbetrieb von Kino-Programmen in Kinoqualität erfolgt heute ausschließlich von auf Rollen gewickeltem Filmmaterial und mittels herkömmlicher Durchleuchtungsprojektion. Um einen Film weltweit zu vermarkten, werden mehrere hundert Kopien an verschiedene Orten verteilt.Today, cinema-quality cinema programs are operated exclusively from to Rolls of wrapped film material and using conventional fluoroscopic projection. Around Marketing a film worldwide will have several hundred copies in different locations distributed.

Die Erstellung von Filmkopien ist aufwendig und kostenintensiv. Bei Kopiervorgängen ver­ lieren aufgrund photochemischer Prozesse sowohl das Original wie auch die Kopie an Qua­ lität, so daß zu vertretbaren Kosten und unter Wahrung eines hohen Qualitätsstandards nur eine beschränkte Anzahl von Kopien bereitgestellt werden kann. Um auf eine hohe Anzahl von Kopien zu erhalten, müssen daher mehrere Generationen von Kopien (Kopien von Kopien) gefertigt werden unter Hinnahme von additiven Qualitätsverlusten. Die beschränkte An­ zahl von Kopien erlaubt unter kommerziellen Gesichtspunkten der Filmindustrie nur eine starre Auswertungsstrategie (Metropolen - Regionalzentren - Städte - Kleinstädte), bevor die Zweit- und Drittauswertung als Videokaufkassette und Fernsehprogrammbeitrag erfolgt. Wiederholte Vorführungen einer Kopie verschlechtern weiter die Qualität durch Abnut­ zungseffekte wie Kratzer oder Verunreinigungen. Verklemmungen im Transportmechanis­ mus führen zu fehlenden Sequenzen, wenn die zerstörten Teile herausgenommen und die intakten Enden wieder zusammengeklebt werden müssen.The creation of film copies is complex and cost-intensive. Ver Due to photochemical processes, both the original and the copy of Qua lity, so that at reasonable cost and while maintaining a high quality standard only a limited number of copies can be made available. To a high number To receive copies, multiple generations of copies (copies of copies) are manufactured taking into account additive quality losses. The limited to The number of copies allows only one from a commercial point of view of the film industry rigid evaluation strategy (metropolises - regional centers - cities - small towns) before the second and third evaluation takes place as a video cassette and television program fee. Repeated demonstrations of a copy further deteriorate the quality through Abnut effects such as scratches or contamination. Jams in the transport mechanism mus lead to missing sequences if the destroyed parts are removed and the intact ends must be glued together again.

Die Archivierung von Kinofilmoriginalen und -kopien ist unvollständig und mit zunehmen­ dem zeitlichen Abstand seit der Veröffentlichung auch nicht mehr nachvollziehbar. Urheberrechte können leicht verletzt werden durch Diebstahl von Kopien, unerlaubte Kopie­ herstellung oder Aufführung.The archiving of cinema film originals and copies is incomplete and increasing the time interval since the publication is no longer understandable. Copyrights can easily be violated by stealing copies, unauthorized copies manufacture or performance.

Lösungen zur Realisierung von elektronischen Kinodiensten werden schon seit einer Reihe von Jahren untersucht. Das derzeit einzige System im Wirkbetrieb wird von der Firma VTHR (Video Transmission Haute Resolution) in Frankreich betrieben. Dieses System arbeitet mit Satellitenübertragung nach dem HD-MAC-Standard, der eine analoge Videoübertragung in Verbindung mit digitalem Ton vorsieht.Solutions for realizing electronic cinema services have been around for a number examined by years. The only system currently in active operation is from VTHR  (Video Transmission Haute Resolution) operated in France. This system works with Satellite transmission according to the HD-MAC standard, which is an analog video transmission in Provides connection with digital sound.

Digitale Systeme sind derzeit noch nicht im Wirkbetrieb. Die Firma Qualcomm behauptet, ein digitales elektronisches Kino-System zur Produktreife entwickelt zu haben ([1], [2]). Technische Details über das verwendete (proprietäre) Datenkompressionsformat so wie die eingesetzte (ebenfalls proprietäre) Verschlüsselung sind nicht verfügbar.Digital systems are not yet in live operation. The Qualcomm company claims a to have developed digital electronic cinema system for product maturity ([1], [2]). Technical details about the used (proprietary) data compression format like that (also proprietary) encryption used is not available.

Im ACTS-Projekt CINENET ([3]) wurde ein Electronic-Cinema-System entwickelt, das auf der Übertragung von MPEG-2 (Main Profile @ H1440 Level) komprimiertem Bildmaterial beruht. Das verwendete CA-System ist Viaccess, das dem DVB CI-Standard entspricht. Dieses CA-System ist für die TV-Übertragung nach DVB konzipiert worden und für die Übertragung von Kinofilmen als nicht sicher genug einzustufen. Der Wert eines digitalisierten Kinofilmes in HD-Qualität liegt um Größenordnungen über dem eines TV-Filmes in Standardauflösung. Daher ist auch ein entsprechend aufwendigeres CA-System erforderlich; siehe auch Sicherheitsanalyse des DVB-Systems in [6].In the ACTS project CINENET ([3]) an electronic cinema system was developed that is based on the transmission of MPEG-2 (Main Profile @ H1440 Level) compressed image material is based. The CA system used is Viaccess, which complies with the DVB CI standard. This CA system has been designed for TV broadcasting according to DVB and for Classification of movies as unsafe enough. The value of a digitized Movies in HD quality are orders of magnitude higher than one TV film in standard resolution. That is why there is a correspondingly more complex CA system required; see also security analysis of the DVB system in [6].

Eigene Veröffentlichungen zu der Thematik ([4] und [5]) existieren, wobei allerdings das Verschlüsselungssystem und der verwendete Mechanismus der Schlüsselübertragung, die Möglichkeiten zur Auswahl der Sprachversion und die Adaptierbarkeit an unterschiedliche Übertragungsnetze nicht dargestellt wurden.Own publications on the topic ([4] and [5]) exist, although that Encryption system and the key transmission mechanism used Options for selecting the language version and adaptability to different ones Transmission networks were not shown.

Die Patentschrift [7] stellt ein HD TV motion picture distribution network vor, bei dem ein Verschlüsselungssystem für einen sicheren Schutz sowie das Problem der Übertragung unterschiedlicher Sprachversionen wie auch die Adaptierbarkeit an unterschiedliche Übertragungsnetze nicht adressiert sind. The patent specification [7] presents an HD TV motion picture distribution network in which a Encryption system for secure protection and the problem of transmission different language versions as well as adaptability to different ones Transmission networks are not addressed.  

Literaturstellen:Literature:

[1] Morley, S.: "Making Digital Video Actually happen", Proceedings of the 140th [1] Morley, S .: "Making Digital Video Actually Happen", Proceedings of the 140 th

An­ nual SMPTE Conference Oct. 28-31, 1998, SMPTE, White Plains, NY, 1998
[2] Hahn, C., Morley, S.: "From Studio to Theatre: Delivering The Movie Electroni­ cally", Records of the Montreux Symposium 1999, Montreux, Switzerland, 1999
[3] ACTS-Project CINENET in: ACTS97; Project Summaries, published by the Euro­ pean Commission, Ref. No. AC97 1392-PS, Bruxelles 1997
[4] Ruppel, W., Breide, S., Dutka, M., Moldrzyk, C.: "A DVB-compliant Electronic Cinema solution", Proceedings of the 140th An nual SMPTE Conference Oct. 28-31, 1998, SMPTE, White Plains, NY, 1998
[2] Hahn, C., Morley, S .: "From Studio to Theater: Delivering The Movie Electroni cally", Records of the Montreux Symposium 1999, Montreux, Switzerland, 1999
[3] ACTS Project CINENET in: ACTS97; Project Summaries, published by the European Commission, Ref. AC97 1392-PS, Bruxelles 1997
[4] Ruppel, W., Breide, S., Dutka, M., Moldrzyk, C .: "A DVB-compliant Electronic Cinema solution", Proceedings of the 140 th

Annual SMPTE Conference Oct. 28-31, 1998, SMPTE, White Plains, NY, 1998
[5] Ruppel, W.: "Electronic Cinema as a Broadcasting Challenge", Records of the Mon­ treux Symposium 1999, Montreux, Switzerland, 1999
[6] Reimers, U.: "Digitale Fernsehtechnik", Springer-Verlag, 1995
[7] Internationales Patent "High Definition TV Motion Picture Distribution Network", International Patent Number WO 97/06637, Publication Date 20. February 1997Annual SMPTE Conference Oct. 28-31, 1998, SMPTE, White Plains, NY, 1998
[5] Ruppel, W .: "Electronic Cinema as a Broadcasting Challenge", Records of the Mon treux Symposium 1999, Montreux, Switzerland, 1999
[6] Reimers, U .: "Digital television technology", Springer-Verlag, 1995
[7] International patent "High Definition TV Motion Picture Distribution Network", International Patent Number WO 97/06637, Publication Date February 20, 1997

Die Erfindung stellt sich die Aufgabe, ein elektronisches Verfahren zur Verteilung von Kino- Programmen anzubieten, das über den gesamten Übertragungsweg von der Erzeugung bis zur Vorführung des Films eine optimale Sicherheit bietet, die Übertragung unterschiedlicher Sprachversionen in hoher Qualität gewährleistet und für die Adaptierbarkeit an unterschiedliche Übertragungsnetze ausgelegt ist.The object of the invention is to develop an electronic method for distributing cinema To offer programs that cover the entire transmission path from generation to for the screening of the film offers optimal security, the transmission of different Guaranteed language versions in high quality and adaptability different transmission networks is designed.

Die Aufgabe wird gelöst durch ein Verfahren gemäß den Merkmalen der Ansprüche 1-4.The object is achieved by a method according to the features of claims 1-4.

Die digitale Filmquelle (Filmscanner, Livekamera) liefert unkomprimierte und synchronisierte digitale Video- und Audioelementarströme, die durch einen Filmcoder in einen Multiplex komprimiert werden. Die Filmverschlüsselungseinheit bezieht von der Zertifizierungsstelle einen symmetrischen Schlüssel für die Anwendung eines starken kryptographischen Verfahrens. The digital film source (film scanner, live camera) delivers uncompressed and synchronized digital video and audio elementary streams that are multiplexed by a film encoder be compressed. The film encryption unit is obtained from the certification body a symmetric key for the application of a strong cryptographic Procedure.  

Das verschlüsselte Filmmaterial wird archiviert. Zusätzlich wird das Filmmaterial vom Filmeigentümer mit einer Signatur zum Schutz des Urheberrechts versehen. Dazu lässt sich der Eigentümer vorher bei der Zertifizierungsstelle registrieren, wobei gleichzeitig eine Filmkennung angelegt und gespeichert wird (Fig. 1). Für den registrierten Film wird ein Zertifikat als Eigentumsnachweis ausgestellt.The encrypted footage is archived. In addition, the film owner is provided with a signature to protect copyright by the film owner. For this purpose, the owner can be registered with the certification body beforehand, whereby a film identifier is simultaneously created and saved ( Fig. 1). A certificate of ownership is issued for the registered film.

Den Zugang bzw. die Kommunikation mit der Zertifizierungsstelle erhält der Filmeigentümer über eine Zugangsautorisierung (Public-Key). Die Zugangsautorisierung erfolgt mit Hilfe des auf einer SmartCard (SC) gespeicherten Schlüssels.The film owner receives access and communication with the certification body via an access authorization (public key). Access authorization is carried out using the key stored on a SmartCard (SC).

Die Zertifizierungsstelle erfüllt insgesamt folgende Aufgaben:
Overall, the certification body fulfills the following tasks:

  • - Registrierung der Anwender. Erzeugung eines asymmetrischen Schlüsselpaares (privater Schlüssel, öffentlicher Schlüssel) pro Teilnehmer und Subsystem.- Registration of users. Generation of an asymmetric key pair (private Key, public key) per participant and subsystem.
  • - Verwahrung einer Sicherheitskopie des privaten Schlüssels an geheimem Ort.- Keep a backup copy of the private key in a secret location.
  • - Übermittlung des privaten Schlüssels an den Teilnehmer.- Transmission of the private key to the subscriber.
  • - Wartung einer für alle Teilnehmer öffentlichen Registratur zur Authentifizierung von Nachrichten und Zertifikaten mittels der öffentlichen Schlüssel.- Maintenance of a public registry for the authentication of all participants Messages and certificates using public keys.
  • - Prüfung und Bestätigung von Vereinbarungen.- Checking and confirming agreements.
  • - Ausstellen von Verwertungszertifikaten und Vorführungszertifikaten.- Issue of exploitation certificates and demonstration certificates.
  • - Erzeugung und Verwaltung von einheitlichen Filmkennungen.- Creation and management of uniform film identifiers.
  • - Erzeugung und Verwaltung von symmetrischen Schlüsseln für die Filmverschlüsselung.- Generation and management of symmetrical keys for film encryption.

Das Sendeprogramm für die Versendung der archivierten Filmbeiträge wird auf der Grundlage einer Vereinbarung zwischen dem Filmeigentümer und dem Filmverleiher zusammengestellt. Zur Kennzeichnung der einzelnen Filmbeiträge werden spezielle Datenpakete als Anfangs- und Endekennung eingefügt.The program for sending the archived film contributions will be on the Basis of an agreement between the film owner and the film distributor compiled. To mark the individual film contributions special Data packets inserted as start and end identifier.

Der Filmverleiher bestimmt die Struktur des Kino-Programms für die vertraglich gebundenen Kinos (Vorführungsvereinbarungen, siehe Fig. 2). The film distributor determines the structure of the cinema program for the contracted cinemas (screening agreements, see Fig. 2).

Das Sendeprogramm kann von allen Netzteilnehmern empfangen werden. Gemäß der vorgeschriebenen Programmstruktur kann ein bestimmtes Kino aus dem Sendeprogramm Beiträge zur Zusammenstellung eines individuellen Kino-Programms entnehmen und auf Grundlage der Vorführungszertifikate entschlüsseln und vorführen (Fig. 3).The broadcast program can be received by all network participants. According to the prescribed program structure, a certain cinema can take articles from the broadcasting program for the compilation of an individual cinema program and decrypt and show it on the basis of the screening certificates ( Fig. 3).

Durch Integration aller sicherheitsrelevanten Komponenten in den Filmprojektor wird eine optimale Sicherheit gegen Raubkopien des unverschlüsselten Films erzielt (Fig. 4). Das Verfahren zur Verteilung der Kinofilme verwendet die Zertifizierung für den Eigentumsnachweis, für die Berechtigung zum Filmverleih und Filmvorführung. Für die Übermittlung und Verifikation der Zertifikate werden kryptographische Verfahren mit asymmetrischen Schlüsseln eingesetzt. By integrating all security-relevant components into the film projector, optimum security against pirated copies of the unencrypted film is achieved ( FIG. 4). The procedure for distributing the films uses certification for proof of ownership, authorization for film distribution and film screening. Cryptographic procedures with asymmetrical keys are used for the transmission and verification of the certificates.

BezugszeichenauflistungReference symbol listing

ACTS Advanced Communications and Services, Forschungsprogramm der Europäischen Kommission
CA Conditional Access
CI Common Interface, Bestandteil des DVB-Standards
DVB Digital Video Broadcasting
HD High Definition
HD-MAC Standard zur analogen Übertragung von HD-Bildsignalen
MPEG Motion Picture Experts Group
Kino-Programme: Kino-Programme bestehen aus einer Folge von einem oder mehreren Programmbeiträgen
Programmbeitrag: Ein Programmbeitrag wird synonym zu dem Begriff "digitaler Film" verwendet
Digitaler Film: Digitaler Film besteht aus dem Zusammenschnitt digitalen Filmmaterials zur Herstellung eines Filmprodukts, das als zusammengehörige Einheit und in Teilen urheberrechtlich geschützt ist und einem Eigentümer zugeordnet werden kann.
Digitales Filmmaterial: Digitales Filmmaterial wird definiert als synchronisierter Multiplex aus komprimierten digitalen Audio- und Videokanälen
Archiv: Das Archiv dient als Langzeitspeicher für verschlüsselte digitale Filme
Speicher: Speicher dient als Sammelbezeichnung für die temporäre Zwischenspeicherung von Filmmaterial, sowie die temporäre und/oder persistente Datenhaltung, Datensicherung und -Recherche von Zertifikaten, Schlüsseln und Meta- und Steuerungsinformationen aller Art.
ACTS Advanced Communications and Services, research program of the European Commission
CA Conditional Access
CI Common Interface, part of the DVB standard
DVB digital video broadcasting
HD high definition
HD-MAC standard for the analog transmission of HD image signals
MPEG Motion Picture Experts Group
Cinema programs: Cinema programs consist of a sequence of one or more program contributions
Program fee: A program fee is used synonymously with the term "digital film"
Digital film: Digital film consists of the compilation of digital film material for the production of a film product that is protected as a related unit and in parts by copyright and can be assigned to an owner.
Digital footage: Digital footage is defined as a synchronized multiplex of compressed digital audio and video channels
Archive: The archive serves as long-term storage for encrypted digital films
Storage: Storage serves as a collective name for the temporary temporary storage of film material, as well as temporary and / or persistent data storage, data backup and research of certificates, keys and all kinds of meta and control information.

Claims (4)

1. Verfahren zur Verteilung von Kino-Programmen, dadurch gekennzeichnet,
dass die Kino-Programme digital, komprimiert und verschlüsselt gespeichert und übertragen werden,
dass für die Verschlüsselung der Programmbeiträge in Echtzeit starke kryptographische Verfahren mit symmetrischen Schlüsseln verwendet werden,
dass die Übertragung der symmetrischen Schlüssel mit starken kryptographischen Verfahren unter Verwendung asymmetrischer Schlüssel gesichert wird,
dass die Erzeugung und Ausgabe der Schlüssel, die Ausstellung und Authentifizierung der Zertifikate treuhänderisch verwaltet werden,
dass die Programmbeiträge für eine eindeutige Separierung durch eine Anfangs- und Endekennung gekennzeichnet werden, und
dass die Zertifikate für die Filmaufführung personenbezogen und/oder bezogen auf die Abspieleinheit ausgestellt werden.1. A method for distributing cinema programs, characterized in that
that the cinema programs are stored and transmitted digitally, compressed and encrypted,
that strong cryptographic methods with symmetrical keys are used for the encryption of the program contributions in real time,
that the transmission of the symmetric keys is secured with strong cryptographic methods using asymmetric keys,
that the generation and issuing of the keys, the issuance and authentication of the certificates are managed in trust,
that the program contributions for a clear separation are identified by a start and end identifier, and
that the certificates for the film performance are issued personally and / or related to the playback unit. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Entschlüsselung durch eine in den Projektor als Teil der Abspieleinheit integrierte Funktionsgruppe erfolgt.2. The method according to claim 1, characterized in that the decryption by function group integrated into the projector as part of the playback unit. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, dass für die Filmaufführung in verschiedenen Sprachen synchronisierte Fassungen auswählbar sind.3. The method according to claim 1 and 2, characterized in that for the film performance dubbed versions in different languages can be selected. 4. Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass für die Verteilung der Kino-Programme Datennetze jeglicher Konfiguration genutzt werden können.4. The method according to claim 1 to 3, characterized in that for the distribution of Cinema programs data networks of any configuration can be used.
DE19957466A 1999-11-24 1999-11-24 Cinema film distribution system uses digital transmission of film and keys gives secured perfect copy in all locations Withdrawn DE19957466A1 (en)

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PCT/EP2000/005989 WO2001039500A1 (en) 1999-11-24 2000-06-28 Method for distributing cinema programs

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