WO2005109337A1 - Method for sending digital copies of protected media and network access device - Google Patents

Method for sending digital copies of protected media and network access device Download PDF

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Publication number
WO2005109337A1
WO2005109337A1 PCT/EP2005/052037 EP2005052037W WO2005109337A1 WO 2005109337 A1 WO2005109337 A1 WO 2005109337A1 EP 2005052037 W EP2005052037 W EP 2005052037W WO 2005109337 A1 WO2005109337 A1 WO 2005109337A1
Authority
WO
WIPO (PCT)
Prior art keywords
network access
end user
access device
digital
user terminal
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.)
Ceased
Application number
PCT/EP2005/052037
Other languages
French (fr)
Inventor
Marco Tomsu
Markus Kessler
Peter Domschitz
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.)
Alcatel Lucent SAS
Nokia Inc
Original Assignee
Alcatel SA
Nokia Inc
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 Alcatel SA, Nokia Inc filed Critical Alcatel SA
Priority to MXPA05013387A priority Critical patent/MXPA05013387A/en
Publication of WO2005109337A1 publication Critical patent/WO2005109337A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G06F21/16—Program or content traceability, e.g. by watermarking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/605—Copy protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/608—Watermarking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload

Definitions

  • the invention relates to a method for sending digital copies of protected media with receiver-individual watermarks according to the preamble of claim 1 and a network access device according to the preamble of claim 4.
  • WO patent 01/67667 describes how receiver-specific watermarks are used in combination with encrypting techniques in order thereby to be able both to determine the origin of unauthorised copies and also to increase the probability that only the rightful receiver can reproduce the media contents by means of a key.
  • Watermarks of this kind are useful for producers of CDs and DVDs and for the police to identify forgeries in which the copyright marking is missing or is incorrect, but this hardly discourages software pirates from making forgeries or pirated copies.
  • An alternative possibility of preventing pirated copies is to incorporate copy protection, such as TCPA (trusted computing platform architecture), for example, in the terminals of the end users.
  • copy protection such as TCPA (trusted computing platform architecture)
  • TCPA trusted computing platform architecture
  • the object of the invention is to create a way of alleviating the above-described situation.
  • Any kind of marking, for individualising multimedia contents is performed by a network access device assigned to the respective end user and located in the path between the media server and the end user terminal.
  • this path is represented either by a separate line or a virtual connection, it can very reliably be guaranteed that the individualised media contents can really be received only by the rightful owner. Therefore in turn the origin of illegal copies can also be very reliably discovered.
  • Each end user is connected by a special virtual or physical connection to a special network access device.
  • This puts the provider of the network access (network access provider or abbreviated NAP), as owner of the bit transmission layer (physical layer), in a position to identify the end user requesting a service.
  • NAP network access provider
  • the provider of services can institute a service object based on software or hardware in the network access device assigned to the end user.
  • the functionality of this service object is similar to code conversion in media.
  • the end user identity in conjunction with other transaction data, such as the identity of the owner of the copyright or the date of the download, for example, is attached to the multimedia contents being transmitted via the network access device in the form of a watermark.
  • this method is suitable not only for individual downloads or streaming, but also for transmitting multimedia contents to several end users simultaneously or even for broadcast messages.
  • the method is further also suitable for providing multimedia contents if these multimedia contents are stored in a cache, wherein in this case the watermark is not attached until after the data have been fetched from the cache.
  • FIG. 1 shows as an example a network environment in which the invention can be implemented.
  • the network environment from Fig. 1 contains a media server (1), a telecommunications network (2), network access devices (3, 4) according to the invention and end user terminals (5 - 8).
  • the media server (1) can communicate with a plurality of end user terminals (5 - 8) via the telecommunications network (2) and the network access terminals (3, 4).
  • the telecommunications network (2) may in this case be the internet, but also any other network, such as a so-called Local Area Network (LAN) or a Wide Area Network (WAN), for example.
  • LAN Local Area Network
  • WAN Wide Area Network
  • This telecommunications network (2) can in this case be implemented both in a fixed network and in a mobile radio environment.
  • the media server (1) is a network terminal for communicating via the telecommunications network (2).
  • This media server (1) can in this case either simply be a computer which acts, e.g., as a web server, or also include special network functions, such as those of a router, switch or gateway, for example.
  • the media server (1) additionally has means for storing media, such as hard disks, compact disks (CDs), digital versatile disks (DVDs) or similar, for example.
  • MPEG moving picture experts group
  • the network access devices (3, 4) have means for receiving, sending, storing and processing data, such as digital copies of media, for example.
  • the means for processing data enable digital watermarks, which contain at least data acting as identification of the end user to whom the digital copies are to be sent, to be imprinted into the digital copies to be sent.
  • the network access device (3, 4) is connected to the telecommunications network (2), such as the internet, for example, via one or more connecting devices. Via further connecting devices of the network access devices (3, 4) there is the possibility of data exchange with end user terminals (5 - 8) connected by means of virtual connections.
  • the network access devices (3, 4) have means which enable the decoding of encrypted digital copies which the network access devices (3, 4) have received via the connecting devices to the telecommunications network (2). Encrypting the data on the path between the media server (1) and the network access devices (3, 4) acts in this case as additional security against illegal copying.
  • the network access devices (3, 4) have means which enable the encrypting of digital copies into which digital watermarks have previously been imprinted and which after encrypting are sent via the connecting devices to the appropriate end user terminals (5 - 8). Encrypting the data on the path between the network access devices (3, 4) and the end user terminals (5 - 8) in this case acts as additional security against illegal copying.
  • the end user terminals (5 - 8) can receive the digital copies which are sent to them via a special physical or virtual connection by one of the network access devices (3, 4).
  • the end user terminals (5 - 8) can be implemented as computers, such as personal computers (PC) or laptop computers, for example, but also again represent a media server. Additionally, the end user terminals (5 - 8) may also stand for portable electronic equipment, such as the personal data assistant (PDA) or mobile telephones, for example.
  • PDA personal data assistant
  • Applications such as Windows Media Player or Real Player , for example, can run on the end user terminals (5 - 8) to illustrate the received digital copies of the media.
  • digital copies of media are sent by the media server (1) via the telecommunications network (2) and a network access device (3, 4) to one of the end user terminals (5 - 8), a digital watermark being imprinted into the digital copy in the network access device (3,4).
  • This digital watermark contains at least information acting as identification of the end user for whom the digital copy is intended, but can additionally also contain, for example, information on the data source or the date of sending.
  • the digital copy provided with the digital watermark is then sent via the connecting device of the network access device (3, 4) via which the respective end user for whom the digital copy is intended is connected.
  • the digital copies of the media in the media server (1) are first encrypted before they are sent by the media server (1) via the telecommunications network (2) to the network access device (3, 4).
  • the digital copies are decoded again before the digital watermarks are imprinted into the digital copies and they are then sent to the end user terminals (5 - 8).
  • the digital copies of the media in the network access device (3, 4) are encrypted after the digital watermarks have been imprinted into the digital copies and then the digital copies are sent encrypted to the end user terminals (5 -8).

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Software Systems (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Technology Law (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

Method for sending digital copies of protected media and network access device Method for sending digital copies of protected media, using receiver-individual digital watermarks, from a media server (1) via a telecommunications network (2) and a network access device (3, 4) with connecting devices to an end user terminal (5 - 8), in which a digital copy which is to be sent to a specific end user terminal (5 - 8) of the telecommunications network (2) is made available in the network access device (3, 4) from which the end user terminal (5 - 8) is connected to the telecommunications network (2) in which the digital copy provided with the digital watermark is sent to the end user terminal (5 - 8) via the connecting device of the network access device (3, 4) via which this end user terminal (5 - 8) is connected, the digital watermark being imprinted into the digital copy to be sent in this network access device (3, 4), wherein the digital watermark contains at least data acting as identification of the end user to whom the digital copy is to be sent.

Description

Description
[001] Method for sending digital copies of protected media and network access device
[002] The invention relates to a method for sending digital copies of protected media with receiver-individual watermarks according to the preamble of claim 1 and a network access device according to the preamble of claim 4.
[003] The rapidly growing number of broadband connections, such as ADSL, for example, for private customers has also caused a sharp increase in the demand for high-quality multimedia services requiring a large bandwidth, such as video- on-demand, for example, or downloading music from the internet. These data are transmitted in digital form and are of a quality comparable to a DVD or CD. Data properties of this kind in turn enable the production of a large number of copies of the data without loss of quality and thereby of course also the production and distribution of illegal copies.
[004] In order to master this problem, the concept of the electronic watermark, in which the data are electronically marked, has been introduced in the transmission of media. This marking is here imprinted by only small changes in the signals to be transmitted and is therefore not perceptible to human senses. By a suitable choice of encrypting for the watermark it is additionally achieved that the watermark is inseparably linked to the data to be transmitted. Based on the information on the sender and the receiver of the data contained in the watermark of the copy, it can clearly be concluded from the copies whether the owner has obtained them legally, in other words is identical to the receiver, or whether they are pirated copies.
[005] WO patent 01/67667 describes how receiver-specific watermarks are used in combination with encrypting techniques in order thereby to be able both to determine the origin of unauthorised copies and also to increase the probability that only the rightful receiver can reproduce the media contents by means of a key.
[006] Currently the only possibility is to attach the watermark in a media server, which in the case of transmission of the same data to many or even all end users based on the receiver-individual watermark means that for every receiver a separate marked data stream has to be sent from the server via the network and the network access device to the end user. As this leads to extraordinarily high server and network utilisation, receiver-individual marking of the data in this way is impracticable. Additionally, there is no guarantee that the receiver of the data has actually ordered them and is therefore the rightful owner, as the data can be intercepted on the way from the server to the network access device, even if the data are being transmitted encrypted. Watermarks imprinted into the data stream in the server are therefore suitable only for identifying the sender, i.e. the holder of the copyright, but not for identification of the receiver beyond reasonable doubt. Watermarks of this kind are useful for producers of CDs and DVDs and for the police to identify forgeries in which the copyright marking is missing or is incorrect, but this hardly discourages software pirates from making forgeries or pirated copies.
[007] An alternative possibility of preventing pirated copies is to incorporate copy protection, such as TCPA (trusted computing platform architecture), for example, in the terminals of the end users. These kinds of copy protection enable the media data to be reproduced only with specific reproduction equipment and thus prevent the reproduction of pirated copies on reproduction equipment other than that originally provided. However, this also stops the legal reproduction of private copies on other reproduction equipment, representing a curtailment of the rights obtained with the purchase of the media.
[008] The object of the invention is to create a way of alleviating the above-described situation.
[009] This object is achieved according to the invention by a method according to the doctrine of claim 1 and by a network access device according to the doctrine of claim 4.
[010] Any kind of marking, for individualising multimedia contents, for example, is performed by a network access device assigned to the respective end user and located in the path between the media server and the end user terminal. As this path is represented either by a separate line or a virtual connection, it can very reliably be guaranteed that the individualised media contents can really be received only by the rightful owner. Therefore in turn the origin of illegal copies can also be very reliably discovered.
[011] Each end user, as mentioned, is connected by a special virtual or physical connection to a special network access device. This puts the provider of the network access (network access provider or abbreviated NAP), as owner of the bit transmission layer (physical layer), in a position to identify the end user requesting a service. Provided that there is a contract between the provider of services and the provider of the network access, the latter can institute a service object based on software or hardware in the network access device assigned to the end user. The functionality of this service object is similar to code conversion in media. The end user identity in conjunction with other transaction data, such as the identity of the owner of the copyright or the date of the download, for example, is attached to the multimedia contents being transmitted via the network access device in the form of a watermark. In this way a clear link between the service provider, the service itself and the end user is produced and enables the prosecution of pirate copiers. Removal of the watermark is possible only by accepting great losses in quality. As the watermark is attached to the data stream in the network access element assigned to the end user, this method is suitable not only for individual downloads or streaming, but also for transmitting multimedia contents to several end users simultaneously or even for broadcast messages. The method is further also suitable for providing multimedia contents if these multimedia contents are stored in a cache, wherein in this case the watermark is not attached until after the data have been fetched from the cache.
[012] Instituting service, objects of this kind with which watermarks can be attached to multimedia contents in the network access devices can take place for each end user individually, without there being unacceptably strong demands on the network capacity, as would be the case if the individual markings were to be attached in the media server. This also enables individual marking by means of watermarks in the case of transmission of the same data to many or even all the end users.
[013] Attaching these individual, non-removable watermarks does not require any kind of expensive changes or extensions of the devices on the part of the end user or service provider and can therefore be executed flexibly and at a reasonable price.
[014] Attaching the watermark in a network access device assigned to the end user additionally reduces the risk of incorrect assignment of watermarks and content.
[015] The method is above all tailored to telecommunications companies acting as network access providers, as they hold exclusive control over the network access device and therefore can take on the attachment of the watermarks.
[016] Based on the network access provider's; control over the network access device and the technical implementation of the path between the network access device and the end user terminal by a separate line or a virtual connection, this connection between the network access device and the end user terminal is relatively secure and the danger of data manipulation and pirated copying is thereby minimised. It is quite possible for transmission of the multimedia contents also to be encrypted on the network path between the media server and the network access device, in order thereby to obtain additional security against pirated copying.
[017] By the method described end users retain the facility, which is also theirs by right, of'making security copies.
[018] The contractual cooperation between the service provider and the network access provider opens up for the service provider potential access to the large pool of customers of the network access provider and therefore the prospect of additional commissions. Additionally, multimedia services can thereby be combined with additional services, such as payment services and the like, for example, likewise offered by the network access providers.
[019] Further configurations of the invention are to be found in the subordinate claims and the following description. [020] The invention is explained in greater detail below with the aid of the attached drawing.
[021] Fig. 1 shows as an example a network environment in which the invention can be implemented.
[022] The network environment from Fig. 1 contains a media server (1), a telecommunications network (2), network access devices (3, 4) according to the invention and end user terminals (5 - 8). The media server (1) can communicate with a plurality of end user terminals (5 - 8) via the telecommunications network (2) and the network access terminals (3, 4).
[023] The telecommunications network (2) may in this case be the internet, but also any other network, such as a so-called Local Area Network (LAN) or a Wide Area Network (WAN), for example. This telecommunications network (2) can in this case be implemented both in a fixed network and in a mobile radio environment.
[024] The media server (1) is a network terminal for communicating via the telecommunications network (2). This media server (1) can in this case either simply be a computer which acts, e.g., as a web server, or also include special network functions, such as those of a router, switch or gateway, for example. The media server (1) additionally has means for storing media, such as hard disks, compact disks (CDs), digital versatile disks (DVDs) or similar, for example. The media may consist of video and/or audio data, such as MPEG data (MPEG = moving picture experts group), for example, or similar data. For communication via the telecommunications network (2) the media server (1) has means both for processing and for receiving and or sending media.
[025] The network access devices (3, 4) according to the invention have means for receiving, sending, storing and processing data, such as digital copies of media, for example. The means for processing data enable digital watermarks, which contain at least data acting as identification of the end user to whom the digital copies are to be sent, to be imprinted into the digital copies to be sent. The network access device (3, 4) is connected to the telecommunications network (2), such as the internet, for example, via one or more connecting devices. Via further connecting devices of the network access devices (3, 4) there is the possibility of data exchange with end user terminals (5 - 8) connected by means of virtual connections.
[026] In a further embodiment the network access devices (3, 4) have means which enable the decoding of encrypted digital copies which the network access devices (3, 4) have received via the connecting devices to the telecommunications network (2). Encrypting the data on the path between the media server (1) and the network access devices (3, 4) acts in this case as additional security against illegal copying.
[027] In a further embodiment the network access devices (3, 4) have means which enable the encrypting of digital copies into which digital watermarks have previously been imprinted and which after encrypting are sent via the connecting devices to the appropriate end user terminals (5 - 8). Encrypting the data on the path between the network access devices (3, 4) and the end user terminals (5 - 8) in this case acts as additional security against illegal copying.
[028] The end user terminals (5 - 8) can receive the digital copies which are sent to them via a special physical or virtual connection by one of the network access devices (3, 4). The end user terminals (5 - 8) can be implemented as computers, such as personal computers (PC) or laptop computers, for example, but also again represent a media server. Additionally, the end user terminals (5 - 8) may also stand for portable electronic equipment, such as the personal data assistant (PDA) or mobile telephones, for example. Applications such as Windows Media Player or Real Player , for example, can run on the end user terminals (5 - 8) to illustrate the received digital copies of the media.
[029] In the method according to the invention digital copies of media are sent by the media server (1) via the telecommunications network (2) and a network access device (3, 4) to one of the end user terminals (5 - 8), a digital watermark being imprinted into the digital copy in the network access device (3,4). This digital watermark contains at least information acting as identification of the end user for whom the digital copy is intended, but can additionally also contain, for example, information on the data source or the date of sending. The digital copy provided with the digital watermark is then sent via the connecting device of the network access device (3, 4) via which the respective end user for whom the digital copy is intended is connected.
[030] In a further embodiment the digital copies of the media in the media server (1) are first encrypted before they are sent by the media server (1) via the telecommunications network (2) to the network access device (3, 4). In the network access device (3, 4) the digital copies are decoded again before the digital watermarks are imprinted into the digital copies and they are then sent to the end user terminals (5 - 8).
[031] In a further embodiment the digital copies of the media in the network access device (3, 4) are encrypted after the digital watermarks have been imprinted into the digital copies and then the digital copies are sent encrypted to the end user terminals (5 -8).

Claims

Claims
[001] Method for sending digital copies of protected media, using receiver-individual digital watermarks, from a media server (1) via a telecommunications network (2) and a network access device (3, 4) with connecting devices to an end user terminal (5 - 8), in which a digital copy which is to be sent to a specific end user terminal (5 - 8) of the telecommunications network (2) is made available in the network access device (3, 4) from which the end user terminal (5 - 8) is connected to the telecommunications network (2) in which the digital copy provided with the digital watermark is sent to the end user terminal (5 -8) via the connecting device of the network access device (3, 4) via which this end user terminal (5 - 8) is connected, characterised in that the digital watermark in this network access device (3, 4) is imprinted into the digital copy to be sent, the digital watermark containing at least data acting as identification of the end user to whom the digital copy is being sent.
[002] Method according to claim 1, characterised in that the digital copy is sent encrypted between the media server (1) via the telecommunications network (2) to the network access device (3, 4) and in the network access device (3, 4) is decoded before the digital watermark is imprinted into the digital copy and it is sent to the end user terminal (5- 8).
[003] Method according to claim 1, characterised in that the digital copy is encrypted after imprinting of the digital watermark and before sending to the end user terminal (5 - 8).
[004] Network access device (3, 4) with connecting devices for connecting end user terminals (5 - 8) of a telecommunications network (2) to this telecommunications network (2) by means of user-individually safeguarded connection channels, in particular for connecting to the internet, characterised in that the network access device (3, 4) has means for making available a digital copy which is to be sent to a specific end user terminal (5 - 8) of a telecommunications network (2), for imprinting a digital watermark into the digital copy to be sent, the digital watermark containing at least data acting as identification of the end user to whom the digital copy is to be sent, and for sending the digital copy provided with the digital watermark to the end user terminal (5 - 8) via the connecting device of the network access device (3, 4) via which this end user terminal (5 - 8) is connected.
[005] Network access device (3, 4) according to claim 4, characterised in that the network access device (3, 4) has means for decoding an encrypted digital copy which the network access device (3, 4) has received via a connecting device to the telecommunications network (2). Network access device (3, 4) according to claim 4, characterised in that the network access device (3, 4) has means for encrypting the digital copy after imprinting of the digital watermark and before sending to the end user terminal (5 - 8).
PCT/EP2005/052037 2004-05-07 2005-05-04 Method for sending digital copies of protected media and network access device Ceased WO2005109337A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MXPA05013387A MXPA05013387A (en) 2004-05-07 2005-05-04 Method for sending digital copies of protected media and network access device.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04291192.5 2004-05-07
EP04291192A EP1594083A1 (en) 2004-05-07 2004-05-07 Method for sending digital copies of protected media and network accessing device

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US (1) US20050262352A1 (en)
EP (1) EP1594083A1 (en)
CN (1) CN1694528A (en)
MX (1) MXPA05013387A (en)
RU (1) RU2006102384A (en)
WO (1) WO2005109337A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8131995B2 (en) * 2006-01-24 2012-03-06 Vixs Systems, Inc. Processing feature revocation and reinvocation
US8913779B2 (en) * 2010-02-02 2014-12-16 Futurewei Technologies, Inc. System and method for securing media content
BR112013026389B1 (en) * 2011-04-19 2022-07-05 Nagravision Sa METHOD AND SYSTEM FOR ACCESSING AN ENCRYPTED AUDIO / VIDEO CONTENT STREAM THROUGH AN IP NETWORK USING A MULTIMEDIA RECEIVING DEVICE
EP2690593A1 (en) 2012-07-24 2014-01-29 Nagravision S.A. Method for marking and transmitting a content and method for detecting an identifyier of said content
JP6323048B2 (en) 2013-03-15 2018-05-16 株式会社リコー Distribution system, distribution method, and program

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020144116A1 (en) * 2000-12-27 2002-10-03 Giobbi John J. Digital rights management

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6233684B1 (en) * 1997-02-28 2001-05-15 Contenaguard Holdings, Inc. System for controlling the distribution and use of rendered digital works through watermaking
JP2001042866A (en) * 1999-05-21 2001-02-16 Yamaha Corp Contents provision method via network and system therefor
US7447907B2 (en) * 2000-04-04 2008-11-04 Ecd Systems, Inc. Method and system for data delivery and reproduction
US7155415B2 (en) * 2000-04-07 2006-12-26 Movielink Llc Secure digital content licensing system and method
AU2001269856B2 (en) * 2000-06-16 2007-11-29 Mih Technology Holdings Bv Methods and systems to distribute content via a network utilizing distributed conditional access agents and secure agents, and to perform digital rights management (drm)
US7240196B2 (en) * 2001-06-22 2007-07-03 Verimatrix, Inc. Method and system for protecting ownership rights of digital content files
JP2003330365A (en) * 2002-05-09 2003-11-19 Toshiba Corp Content distribution / receiving method
US20050091367A1 (en) * 2003-10-23 2005-04-28 Nokia Corporation System and method for tracking content communicated over networks

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020144116A1 (en) * 2000-12-27 2002-10-03 Giobbi John J. Digital rights management

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JUDGE P ET AL: "WHIM: watermarking multicast video with a hierarchy of intermediaries", COMPUTER NETWORKS, ELSEVIER SCIENCE PUBLISHERS B.V., AMSTERDAM, NL, vol. 39, no. 6, 21 August 2002 (2002-08-21), pages 699 - 712, XP004371479, ISSN: 1389-1286 *
PIVA A ET AL: "Managing copyright in open networks", IEEE INTERNET COMPUTING, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 6, no. 3, June 2002 (2002-06-01), pages 18 - 26, XP002255464, ISSN: 1089-7801 *

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