EP1903696A1 - Système de navigation avec un récepteur de radiodiffusion et un terminal mobile pour utiliser des contenus multimédia d'accès restreint - Google Patents

Système de navigation avec un récepteur de radiodiffusion et un terminal mobile pour utiliser des contenus multimédia d'accès restreint Download PDF

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Publication number
EP1903696A1
EP1903696A1 EP06425653A EP06425653A EP1903696A1 EP 1903696 A1 EP1903696 A1 EP 1903696A1 EP 06425653 A EP06425653 A EP 06425653A EP 06425653 A EP06425653 A EP 06425653A EP 1903696 A1 EP1903696 A1 EP 1903696A1
Authority
EP
European Patent Office
Prior art keywords
communication
mobile radio
multimedia content
radio terminal
access
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Withdrawn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
EP06425653A
Other languages
German (de)
English (en)
Inventor
Piero De La Pierre
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.)
Marelli Europe SpA
Original Assignee
Magneti Marelli Sistemi Elettronici SpA
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 Magneti Marelli Sistemi Elettronici SpA filed Critical Magneti Marelli Sistemi Elettronici SpA
Priority to EP06425653A priority Critical patent/EP1903696A1/fr
Publication of EP1903696A1 publication Critical patent/EP1903696A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
    • H04H60/51—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of receiving stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/23—Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/90—Wireless transmission systems

Definitions

  • the present invention relates in general to restricted-access multimedia content broadcasting systems, such as, for example, digital audio and video broadcasting services.
  • a system for using restricted-access broadcasting services and in particular a system for receiving them on-board vehicles.
  • every receiver apparatus for decoding and displaying to the user restricted-access multimedia content must have a device for reading a recording medium which contains the subscriber access code.
  • Digital video broadcasting services have recently found, in portable mobile radio terminals, a medium suitable for their spreading among a large number of consumers.
  • Mobile radio terminals are already designed to read a recording medium (SIM) which has, stored inside it, the identifier of the person subscribed to the telephone services, and the code for accessing the broadcasting services supplied by the telephone operator may also be stored on this medium.
  • SIM recording medium
  • the screen of the mobile radio terminals is suitable - albeit with some limitations due to its small size - for use as a screen for the display of video multimedia content broadcast via a large number of digital land television channels.
  • the object of the present invention is therefore to provide a system for using restricted-access multimedia content broadcasting services which overcomes the drawbacks of the known art mentioned above, namely which may be provided on any multimedia device possessed by a subscribed user, making the content accessible in the simplest possible manner, using a single medium for storing the access code.
  • the invention also relates to a method for using restricted-access multimedia content broadcasting services according to Claim 23.
  • the present invention is based on the principle of using, as remotely located readers, devices which already comprise a reader for a recording medium (smart card or the like) containing a code for access to the restricted-access broadcasting services, initiating a session for secure transmission of this code to separate multimedia devices which are specifically enabled to receive the service and display it to the user and do not possess this reader.
  • a recording medium smart card or the like
  • the device including a recording medium containing the code for access to these services is typically a mobile radio terminal.
  • the device enabled to receive the multimedia content broadcasting service and for displaying it to the user may be a portable navigation device, a portable device for reproducing multimedia content, a portable play station or console, or a telematic entertainment and information system installed on-board a vehicle.
  • an on-board satellite navigation device may be adopted as a device which is able to receive a multimedia content broadcasting service and show this content to a user and able to be configured for automatic selection of these services on a geographical basis.
  • these show a navigation apparatus N, for example an apparatus which is portable or installed on-board a vehicle, including - as shown in the enlarged detail - a module R for receiving multimedia content broadcasting signals, provided with a dedicated antenna A, and an associated decoder module D arranged to perform decoding of the signals received from the receiver module R.
  • the navigation apparatus is equipped with its own display screen S and is adapted to operate as a multimedia device for displaying on the screen multimedia content conveyed by the decoded signals.
  • a multimedia content broadcasting service may be selected depending on the commands introduced by the user via an input interface K (for example, a plurality of keys) which is normally designed to perform the usual command functions of the apparatus.
  • an input interface K for example, a plurality of keys
  • An external mobile radio terminal T for example an ordinary cellular phone, is arranged within a predetermined operating range of a communications link L with said navigation apparatus N and is provided with means for acquiring a code for accessing multimedia content broadcasting services, for example a reader for a recording medium C (such as a SIM card, shown in the figure in the extracted condition) which has said code stored on it.
  • a code for accessing multimedia content broadcasting services for example a reader for a recording medium C (such as a SIM card, shown in the figure in the extracted condition) which has said code stored on it.
  • the navigation apparatus N comprises a short-range communication interface adapted to establish a communication link L with the mobile radio terminal T and establish a secure communication session with said terminal in order to acquire the code for access to the broadcasting services so as to make this code available for the decoder module D.
  • the communication link L between the navigation apparatus N acting as a multimedia device and the mobile radio terminal T may be a wireless connection which is able to ensure the secrecy and integrity of the code, for example using a Bluetooth protocol or a Wi-Fi protocol, or a wired connection, for example comprising a serial communications line or a bipolar power line.
  • the navigation apparatus N acting as a multimedia device is arranged for transmitting a signal interrogating mobile radio terminals which are active within a predetermined communication range, for example of an order of magnitude equivalent to the dimensions of the vehicle in which the apparatus N is installed, or its passenger compartment, when the receiver R receives an encoded multimedia content broadcasting signal.
  • the apparatus N automatically establishes a communication link L with the abovementioned terminal and carries out a mutual authentication procedure. Preferably, it initiates an encrypted communication session with the mobile radio terminal, where the encryption key is derived from the broadcasting signal received, as shown in Figure 2.
  • the system is arranged to cause termination of the communication session if the communication link L with the mobile radio terminal T is interrupted, for example as a result of the terminal being moved out of the operating range of the link or owing to the credit available for the active service being used up, so as to prevent any fraudulent use of the service.
  • the latter Upon switching on the receiver R, the latter is tuned by means of the interface K so as to receive predetermined audio/video channel stations.
  • the stations may be encrypted by the restricted-access codes.
  • the actual transmission may be encrypted in one geographic zone and be transmitted unscrambled in other zone, depending on the marketing policies of the broadcasting station.
  • the receiver which receives an unscrambled transmission checks that there are no geographical area restrictions.
  • the receiver R detects that it is tuned to a coded audio/video channel, it searches for the access code, attempting to establish connection with a mobile radio terminal T in the vicinity. If a terminal is detected, the receiver exchanges mutual authentication credentials with the terminal and after authentication has been successfully completed, it establishes a restricted-access session with transfer of the access codes from the mobile radio terminal to the receiver.
  • the protocol used for transfer of the codes is secure so as to ensure that fraudulent acquisition of the codes is technically improbable.
  • the decoder associated with the receiver is able to decode the content and make it available in legible form.
  • a transmission algorithm which is based on a combination of a public key / private key algorithm with a symmetrical key.
  • the public key is obtained by the receiver R via the broadcast transmission, while the private key is instead obtained by the mobile radio terminal T via a channel which is normally made secure by the telephone operator using the same techniques used for enciphering SMS messages.
  • the mobile radio terminal T Upon connection, the mobile radio terminal T transmits to the receiver an index and a test number to be encoded.
  • the receiver carries out on the test number a conversion using the public key and returns the result to the mobile radio terminal.
  • the mobile radio terminal in the event of a correct response, provides the receiver with a symmetrical session key by means of which it will encode the entire subsequent transmission of the access code.
  • the public key / private key pair may be modified with a high frequency (for example, every 15 minutes) in order to prevent the access codes being revealed even in the event of unauthorized access.
  • the receiver R may be conveniently arranged to filter the broadcasting signals received depending on the geographic location detected or else decide whether or not to acquire an access code depending on the geographical location detected.
  • Said receiver may be used as a DVB-H digital television connecting it to a special decoder by means of the SD slot or other available channel (USB, etc.).
  • the navigation apparatus makes use of the access codes contained in a SIM card which is supplied by the telephone operator which transmits the channel and which is housed in the mobile radio terminal to which connections are made via the Bluetooth channel, being already available for other purposes both in the navigation apparatus and in the mobile radio terminal.
  • the transmission of given contents may contain a code which indicates whether reception is prohibited in particular geographic zones.
  • the receiver Upon reception of the geographic prohibition codes, the receiver checks whether its own position (supplied to it by the satellite locating system with which it is associated) is situated in one of the prohibited zones, in which case it does not request the restricted-access codes from the mobile radio terminal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)
EP06425653A 2006-09-25 2006-09-25 Système de navigation avec un récepteur de radiodiffusion et un terminal mobile pour utiliser des contenus multimédia d'accès restreint Withdrawn EP1903696A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06425653A EP1903696A1 (fr) 2006-09-25 2006-09-25 Système de navigation avec un récepteur de radiodiffusion et un terminal mobile pour utiliser des contenus multimédia d'accès restreint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425653A EP1903696A1 (fr) 2006-09-25 2006-09-25 Système de navigation avec un récepteur de radiodiffusion et un terminal mobile pour utiliser des contenus multimédia d'accès restreint

Publications (1)

Publication Number Publication Date
EP1903696A1 true EP1903696A1 (fr) 2008-03-26

Family

ID=37762404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06425653A Withdrawn EP1903696A1 (fr) 2006-09-25 2006-09-25 Système de navigation avec un récepteur de radiodiffusion et un terminal mobile pour utiliser des contenus multimédia d'accès restreint

Country Status (1)

Country Link
EP (1) EP1903696A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0804012A2 (fr) * 1996-04-23 1997-10-29 Nokia Mobile Phones Ltd. Terminal multimédia et procédé de réception multimédia
EP1081884A2 (fr) * 1999-09-03 2001-03-07 Robert Bosch Gmbh Méthode pour la transmission de données cryptées à travers un réseau de radiodiffusion, où la clé de décryptage est obtenue à travers une liaison de communication bidirectionnelle
WO2001043364A1 (fr) * 1999-12-10 2001-06-14 Ecarmerce Incorporated Systeme interactif conçu pour etre utilise avec la presse electronique et procede correspondant
WO2006065194A1 (fr) * 2004-12-17 2006-06-22 Telefonaktiebolaget Lm Ericsson (Publ) Autorisation dans un systeme de communication cellulaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0804012A2 (fr) * 1996-04-23 1997-10-29 Nokia Mobile Phones Ltd. Terminal multimédia et procédé de réception multimédia
EP1081884A2 (fr) * 1999-09-03 2001-03-07 Robert Bosch Gmbh Méthode pour la transmission de données cryptées à travers un réseau de radiodiffusion, où la clé de décryptage est obtenue à travers une liaison de communication bidirectionnelle
WO2001043364A1 (fr) * 1999-12-10 2001-06-14 Ecarmerce Incorporated Systeme interactif conçu pour etre utilise avec la presse electronique et procede correspondant
WO2006065194A1 (fr) * 2004-12-17 2006-06-22 Telefonaktiebolaget Lm Ericsson (Publ) Autorisation dans un systeme de communication cellulaire

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