WO2005120069A2 - Systeme de divertissement de bord a communication sans fil entre les composants - Google Patents

Systeme de divertissement de bord a communication sans fil entre les composants Download PDF

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Publication number
WO2005120069A2
WO2005120069A2 PCT/US2005/018557 US2005018557W WO2005120069A2 WO 2005120069 A2 WO2005120069 A2 WO 2005120069A2 US 2005018557 W US2005018557 W US 2005018557W WO 2005120069 A2 WO2005120069 A2 WO 2005120069A2
Authority
WO
WIPO (PCT)
Prior art keywords
video display
content
network
display unit
address
Prior art date
Application number
PCT/US2005/018557
Other languages
English (en)
Other versions
WO2005120069A3 (fr
Inventor
Kenneth A. Brady, Jr.
David A. Reichert
Original Assignee
Thales Avionics, 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 Thales Avionics, Inc. filed Critical Thales Avionics, Inc.
Priority to CA002566416A priority Critical patent/CA2566416A1/fr
Priority to BRPI0511464-0A priority patent/BRPI0511464A/pt
Priority to EP05754032.0A priority patent/EP1749403A4/fr
Priority to JP2007515339A priority patent/JP2008501297A/ja
Publication of WO2005120069A2 publication Critical patent/WO2005120069A2/fr
Publication of WO2005120069A3 publication Critical patent/WO2005120069A3/fr

Links

Classifications

    • 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
    • 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
    • H04N21/21—Server components or server architectures
    • H04N21/214—Specialised server platform, e.g. server located in an airplane, hotel, hospital
    • H04N21/2146—Specialised server platform, e.g. server located in an airplane, hotel, hospital located in mass transportation means, e.g. aircraft, train or bus
    • 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 or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream 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]
    • H04N21/40—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
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/658—Transmission by the client directed to the server
    • H04N21/6581—Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application

Definitions

  • the present invention is generally directed toward wireless communication over a network, and, more particularly, to a reduced-architecture in-flight entertainment (LFE) system providing wireless connectivity.
  • LFE in-flight entertainment
  • IFE In-flight entertainment systems are known for providing audio and/or video presentations and other services to passengers on board an aircraft.
  • a known type of IFE system generally comprises a reduced-architecture network of computer components, including one or more server units, processor units, input devices, and display devices installed throughout the aircraft.
  • Such an IFE system can be configured to utilize network commands to perform traditional passenger functions, such actuation of audio volume control, reading lights, and flight attendant call indicator.
  • Some IFE systems offer additional functionality such as individual passenger video displays and a variety of entertainment offerings.
  • IFE systems include a plurality of display units mounted for passenger viewing. Display units are commonly mounted in seat backs, facing the passengers in the row behind. Display units may also be mounted overhead or on seat arms. A cable to carry a video signal extends to the display unit from a port on the IFE, and wiring is also provided to deliver power to the display unit.
  • Weight minimization is a priority for aircraft components.
  • Known reduced- architecture IFE systems have allowed a weight savings over earlier systems by providing an onboard network backbone to carry signals previously communicated over a plurality of cables to respective individual components. Further weight reduction remains desirable in view of the constant effort to improve aircraft performance and efficiency.
  • the present invention provides an IFE system that includes display devices equipped to receive a signal via a wireless data transmission.
  • the display devices are mounted for viewing by passengers, such as to seat backs or arm rests.
  • the wireless configuration eliminates a need for a cable to deliver the signal to the display from the network backbone, advantageously providing a weight savings. Moreover, the eliminated wiring results in easier installation.
  • the signal transmitted wirelessly to the IFE display contains at least video data.
  • the IFE display is further equipped with an audio player, in which case the signal contains audio or combined audio/video data.
  • the IFE system is provided with a server that stores and dispenses files of audio and/or video entertainment offerings.
  • the IFE system in order to prevent unauthorized use of the wireless IFE signal, utilizes an encryption system.
  • the transmitted signal is in a securely encoded, non-standard format.
  • Authorized playback devices are provided with a decryption means, thereby facilitating proper playing of the wireless signal at the device. Without the decryption means, unauthorized devices would not be able to play the signal.
  • the decryption means may be a corresponding decryption key that can be transmitted to authorized devices.
  • FIG. 1 is a schematic architecture diagram illustrating an embodiment of a wirelessly networked IFE system
  • FIG. 2 is a control flow diagram illustrating an embodiment of a process for establishing a communication link between a client device and a content server in the architecture illustrated in FIG. 1, wherein the client device is authenticated by a server;
  • FIG. 3 is a message flow diagram illustrating an embodiment of a message flow between processes for authentication and content streaming based on challenge and authentication;
  • FIG. 4 is a control flow diagram for a process for user selection of content in a client agent, wherein authentication is based upon a client device address value;
  • FIG. 5 is a control flow diagram for an embodiment of a process in a server for authorizing a client's content request, wherein authentication is based upon the client device address value;
  • FIG. 6 is a message flow diagram illustrating an example of the message flow between the processes of FIGS. 4 and 5;
  • FIG. 7 is a schematic architecture diagram illustrating an embodiment of a wireless IFE system wherein wireless client devices in communication with a server may include user supplied devices;
  • FIG. 8 is a message flow diagram illustrating an embodiment of a process wherein multiple content streams are broadcast via the wireless network of a wireless IFE and a user selects which stream to decode and display;
  • FIG. 9 is a protocol stack diagram illustrating a protocol stack for an embodiment of wireless connection between a content server and a client agent wherein a modified transport protocol layer is utilized to receive multiple broadcast streams; and
  • FIG. 10 is a protocol stack diagram illustrating a protocol stack for an embodiment of wireless connection between a content server and a client agent wherein a content stream is encrypted using a private/public key encryption scheme.
  • IFE systems are generally described in commonly owned and assigned U.S.
  • Patent Application No. 10/136,237 filed May 1, 2002, entitled Method and System for Configuration and Download in a Restricted Architecture Network, published as U.S. Publication No. 2003 0208579 Al, and U.S. Patent Application No. 10/145,464, filed May 14, 2002, entitled Method For Controlling An h -Flight Entertainment System, published as U.S. Publication No. 2003 0217363 Al, each of which is incorporated herein by reference in its entirety for purposes of disclosure.
  • FIG. 1 is a diagram illustrating an embodiment of a reduced architecture IFE system 100.
  • IFE system 100 includes a backbone network 110, such as a high speed local area network (LAN), to which are connected, in this example, a satellite interface 112 for transfer of content to and from a satellite, a management terminal 114 for control and administration of the IFE system 100, and a cockpit interface 116 for communications with the cockpit crew.
  • LAN local area network
  • the LFE system further includes a digital server unit (DSU) 130 for distributing a variety of streaming audio/video offerings.
  • the server can support multiple clients and can broadcast multiple independent programs.
  • Video content is typically stored on a storage unit (132), such as a disk drive of the DSU, in a compressed format, such as the Motion Picture Expert Group (MPEG) formats MPEG-1 and MPEG-2.
  • MPEG Motion Picture Expert Group
  • the audio content is typically stored in a compressed format, such as MPEG-3 (MP3).
  • MP3 MP3
  • the storage unit is typically accessed using a high speed interface, such as a SCSI interface, which may be accessed by a technician in order to load content onto the storage unit.
  • Multiple DSUs may be utilized in order to provide content to ADBs, tapping units, or other client devices.
  • the IFE system 100 is wirelessly networked.
  • IFE system 100 also includes a wireless router 120 for wirelessly communicating with wireless client devices in the system, which include, in this example, seat back video display units (VDUs) 140A-D, and an overhead display unit 144.
  • VDUs seat back video display units
  • an overhead display unit 144 Preferably, a common wireless standard is used, such as IEEE 802.1 la or LEEE 802. llg.
  • each of the VDU's 140 A-D is mounted in the aircraft cabin for viewing by a passenger.
  • the VDU may be mounted in a seat back, facing rearwardly.
  • the VDU can be mounted to any appropriate structure, such as arm rest, an overhead console or ceiling, or a bulkhead.
  • the VDU includes a passenger input device.
  • the device may include, for example, a touch screen display or buttons located in a housing of the NDU, in an arm of the passenger seat, or some other convenient position.
  • LFE system distributes content in an on-demand manner as selected from a particular NDU.
  • some or all of the content may be distributed in a broadcast manner, as will be described in further detail below.
  • the operator of the IFE system can control services provided by the IFE system 100 of FIG. 1, it may be desirable to encrypt the content streams to the client devices.
  • encryption may be desirable in order to prevent reception and use of the content by unauthorized devices. This may be particularly important for providing copyright-protected content, such as movies.
  • encryption may be desirable to implement a pay-per-view process that distributes content only to paying passengers.
  • FIG. 2 is a control flow diagram illustrating an embodiment of a process 150 for establishing a communication link between a client device and a content server in the architecture illustrated in FIG. 1, wherein the client device is authenticated by a server.
  • Each client device such as NDUs 140 A-D, establishes a media access control (MAC) connection to the wireless network provided by wireless router 120.
  • MAC media access control
  • a wireless card in each NDU communicates with the router.
  • a communication link is established between the client device and a server, such as content server 130 in FIG. 1, at step 154.
  • the client device is authenticated by the server as a device authorized to receive content through IFE system 100.
  • an encrypted link is established between the server and the client device.
  • content may be encrypted using a private key that can be decrypted using a public key provided to the client devices. This public key value may be purchased or authorized via the authentication process.
  • an encrypted tunnel connection may be established between the client and server.
  • content may only be provided to certain pre-authorized client address values. Examples are discussed further below.
  • a client agent process 200 (FIG. 3) in a client device, e.g.
  • VDU 140A is provided with a universal resource locator (URL) for an HTML page that is served to a user so that the user can provide information for a challenged handshake authentication protocol (CHAP).
  • CHAP challenged handshake authentication protocol
  • the user may purchase services or provide authentication data indicating that user is authorized to receive services.
  • Such authentication may be particularly useful in an embodiment wherein the client device is a portable device supplied by the user, rather than a dedicated device built into the aircraft.
  • the HTML page alternatively may be used as a convenient interface for a maintenance technician to configure client devices for operation as part of the wireless IFE system 100, e.g. when the system is initialized or additional units are introduced.
  • FIG. 3 is a message flow diagram illustrating an embodiment of a message flow between processes for authentication and content streaming based on challenge and authentication using an HTML page.
  • Client agent 200 transmits a request to the IFE system 100 with a URL value for the HTML page.
  • the request is picked up by a domain name server (DNS) process 210, which, in this example, maps the URL value to the HTML page and serves the HTML page to client agent process 200 along with the CHAP server address value for CHAP server process 220.
  • DNS domain name server
  • the HTML page which is rendered and displayed to the user by the client agent, prompts the user for authentication information, such as an account and password, which results in a CGI request being sent to CHAP server process 220 along with the network address for the client device.
  • CHAP server process 220 checks the authentication information provided by the user to a database, for example, to authenticate the user and the client device. Note that some or all of the server processes discussed here may reside in the same machine or may be spread out over multiple machines, depending upon the demands on the IFE system 100. If the user provides valid authentication information, then CHAP server process 220 sends a message to content server process 230, which, in this example, resides in content server 130 of FIG. 1, indicating that a client device has been authenticated and providing the address of the client device on the network. CHAP server process 220 also provides the address of the content server process 230 to client agent process 200. Client agent 200 then sends a user's request for content to content server process 230 with the client device address. Content server process 230 checks the client device address against its list of authenticated client address values as provided by CHAP server process 220 and, since the client address value has been validated, streams the requested content to client agent process 200 at the client device address.
  • FIG. 4 a control flow diagram is illustrated for a process for user selection of content in a client agent where authentication is based upon a client device address value.
  • the client agent receives a user selection.
  • the client agent may be supplied with an HTML page that provides the user with a selection of options for content to choose from or a separate step may be provided for obtaining data for the user's available choices.
  • the user's selection causes a request to be sent for the selected content to the content server process address provided above, where the request message includes the client device address.
  • the agent process then waits at step 206 to receive the requested content, which is rendered and displayed to the user at step 208 when it is received. For example, audio or video content may be served to the user in this manner.
  • FIG. 5 is a control flow diagram for an embodiment of content server process 230 in a server where authentication is based upon the client device address value.
  • the server process receives the request for selected content from the client agent.
  • the server process compares the client address value from the request for content with the list of valid client address values compiled on the basis of messages from CHAP server process 220. If the address value is valid, then control flow branches at step 240 to step 242 where the content requested by the user is streamed to the client address via the wireless connection to the client device. If the address value is not one of the validated addresses provided to the content server process 230, then, in this example, a rejection message is sent to the client address.
  • the rejection message may include the CHAP HTML page in order to reinitiate the authentication process.
  • FIG. 6 is a message flow diagram illustrating an example of the message flow between the processes of FIGS. 4 and 5.
  • the client agent 200 sends requests for content to the content server process 230.
  • Content server process 230 validates the address from information in storage 132, e.g. a hard drive, retrieves the requested client from storage 132, and streams the content to client agent 200 through wireless router 120 over a wireless connection to the address of the client device, e.g. VDUs 140A-D, to the client agent.
  • the client devices may be NDUs or other devices that are provided with the IFE system 100.
  • the CHAP process may take the form of a maintenance routine whereby an IFE system technician enters and validates each of the client devices that are part of the IFE system and the system is thereby configured for operation.
  • the client device may be provided by the user.
  • FIG. 7 is an architecture diagram illustrating an embodiment of a wireless IFE system 300 wherein wireless client devices in communication with a server may include user supplied devices.
  • the user may have a wireless enabled device capable of receiving content for the user, such as a portable personal computer 302, a personal data appliance (PDA) 304, or a mobile telephone 308.
  • PDA personal data appliance
  • wireless router 130 of FIG. 1 is configured to establish a communication link with these user provided client devices.
  • the CHAP process may involve authorizing the client device on the basis of payment made by the user, in which case the CHAP process includes an interface for collecting the necessary billing information.
  • the authentication information e.g. an account and password or a public key for use in decrypting data streams
  • Broadcast message streams may be preferred in certain applications for providing content.
  • streaming broadcast content may be preferred for IFE systems that do not have sufficient capacity to provide a custom data stream for each user.
  • each data stream may be simultaneously broadcast.
  • packets are transmitted in the system using a broadcast address provided by an appropriate protocol, such as transport control protocol (TCP), with the different streams being differentiated from one another by unique socket values.
  • TCP transport control protocol
  • multiple broadcast addresses may be provided by a transport layer protocol with each stream corresponding to one broadcast address.
  • FIG. 8 is a message flow diagram illustrating an embodiment of a scheme wherein multiple content streams are broadcast via the wireless network of a wireless IFE and a user selects which stream to decode and display.
  • a client agent process 400 is configured to receive multiple broadcast content streams transmitted by a content server process 430 that is configured to transmit packets for each content stream. For example, three different video programs may be transmitted as a stream of broadcast packets with different socket or broadcast address values, incidated in FIG. 8 as broadcast addresses 1, 2 and 3.
  • a user selection received by the client agent 400 determines which of the broadcast content data streams is to be buffered and displayed to the user. For example, if the user selects video program 1, client agent 400 buffers the broadcast packets it receives for broadcast address 1, or socket 1 depending upon the implementation, and renders those packets for display. The packets for all other broadcast streams are discarded.
  • FIG. 9 is a protocol stack diagram illustrating a protocol stack for an embodiment of wireless connection between a content server and a client agent wherein a modified transport protocol layer, e.g. a modified TCP scheme, is utilized to receive multiple broadcast streams.
  • a content server containing the content server process 430 is in wireless communication with a client device, e.g. a user supplied device or a device that is a dedicated part of the IFE system, that contains client agent process 400.
  • the protocol stack illustrates a network interface, MAC or link level control (LLC), and internet protocol (IP) relation at the physical, link and network levels, respectively, between content server 130 and wireless router 120.
  • LLC link level control
  • IP internet protocol
  • Wireless router 120 also has a wireless interface, MAC/LLC, IP relation at the physical, link and network levels, respectively, with the client device.
  • the content server process 430 uses a modified TCP layer 432 to transmit each content data stream as packets having either a different broadcast address or using the standard broadcast address in combination with different socket values.
  • a modified TCP layer 402 in the client device monitors the broadcast packets transmitted by content server process 430 and buffers and passes up to the client agent 400 only those broadcast packets corresponding to the stream selected by the user. The broadcast packets for the selected stream are then rendered and displayed for the user.
  • FIG. 10 is a protocol stack diagram illustrating a protocol stack for an embodiment of wireless connection between a content server and a client agent wherein a content stream is encrypted using a private/public key encryption scheme.
  • Other encryption schemes may also be applied, such as dedicated keys preconfigured in the content server and client devices by maintenance or installation personnel.
  • Two variations are shown in FIG. 10 where a public/private key encryption scheme is utilized, which, in this example, is pretty good protection (PGP).
  • PGP runs at the session layer 532 above the transport layer 534 on the server side and at session layer 502 above transport layer 504 on the client side.
  • PGP is a service of the transport layer
  • content data at the content server is encrypted using a private key and transmitted to the client device where it is decrypted using a public key provided to the user by a flight attendant, for example.
  • an encryption decryption process can be implemented in data communicated between the router and client device running in a layer below the IP layer at the client device and router, as illustrated in FIG. 10. Such encryption/decryption can be in accordance with IEEE 802. Hi. Other encryption schemes may be utilized.
  • an operator of the IFE system may want to facilitate the reception and playing of the IFE content on the portable wireless devices, but in a controlled manner whereby a pay-per-view fee can be charged and/or unauthorized copying of the signal content can be prevented.
  • Control over playability of the signal is important, for example, when the video offering is a copyright protected work, such as most movies.
  • the IFE system is useful for other critical cabin functions such as for public address (PA) announcements.
  • PA public address
  • the PA function enables crew members to broadcast audio announcements to all passengers in the aircraft.
  • the IFE permits such announcements to be heard without interference.
  • the IFE ceases transmission of audio relating to entertainment presentations and instead transmits the PA announcement instead to the headsets.
  • the LFE could cease the transmission of audio relating to entertainment presentations, resulting in no headphone output so that the passengers can hear the PA announcement over the ambient speakers. This means that silence at the headset is certifiable but customer expectations are that the PA audio will be presented to the passenger headset as well. All other entertainment transmissions cease upon transmission of the selected entertainment presentation.
  • Area passenger announcements are PA announcements that are restricted to a specific area of the aircraft (like first class, economy, crew rest, etc.). Seats in the corresponding area should meet the requirements for PA (silence or presentation of the PA speaker audio). During an area PA, entertainment signals must continue delivery to seats that are not in the designated area in order to operate unaffected.
  • the area passenger announcements preferably have are delivered to the headset with a delay of no more than about 35 ms delay from input into system.
  • the PA area may cover multiple wireless areas. A wireless area may be able to cover multiple PA areas. Entertainment should continue during announcement.
  • an IFE system having at least some overhead video displays (displays arranged to be viewed by multiple passengers), the same image is presented to each of the overhead displays in a specified area.
  • the presentation is preferably synchronized to within about 60 ms across all displays.
  • the audio associated with an overhead video program is presented to each passenger wanting to watch the overhead video program.
  • the audio associated with the overhead video program must also be presented to the passenger's ear within about the same 60 ms.
  • uncompressed digital audio is delivered to the seat for the one overhead video program in the area.
  • Overhead may be provided with analog/ ARTNC722 standard interface to avoid overhead display synchronization issues.
  • the IFE system may be configured to present a video announcement (VA) as an overhead video program having associated audio that is played over the PA system as an area PA.
  • VA video announcement
  • the LFE system operates with a video override feature that, when activated, forces all in-seat video displays in the designated Overhead Video area to ON and presents a single specific video program in each of these displays.
  • the wireless activity is ceased during critical flight phases if deemed necessary to avoid interference with aircraft communication equipment or navigation instruments.
  • the display units wirelessly communicate passenger service system (PSS) selections, the PSS functions would be unavailable during such critical flight phases.
  • PSS passenger service system
  • a database is provided to establish parameters for the features of area PA, video announcements, class oriented features, and PSS on a seat-by- seat basis.
  • the database may be distributed to the seats (e.g. as part of maintenance activity) to ensure that time critical responses (like PSS and area PA) can be met.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)

Abstract

L'invention concerne un système de divertissement de bord à communication sans fil qui comprend un réseau comprenant au moins un routeur sans fil permettant de communiquer sans fil entre un serveur de réseau et une ou plusieurs unités de visualisation dans la cabine. La transmission sans fil de signaux vidéo permet d'obtenir une architecture réduite qui rend superflu le transport d'un signal aux unités de visualisation par des câbles. Dans un mode de réalisation, le système de divertissement de bord à communication sans fil facilite l'utilisation d'un dispositif sans fil distant, tel qu'un ordinateur portable, en tant qu'unité de visualisation. Les clients peuvent sélectionner, parmi différents programmes, un programme pouvant être distribué sur demande ou radiodiffusé. L'invention concerne également des moyens de chiffrement qui permettent de commander la distribution de contenu uniquement aux dispositifs autorisés.
PCT/US2005/018557 2004-05-27 2005-05-26 Systeme de divertissement de bord a communication sans fil entre les composants WO2005120069A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002566416A CA2566416A1 (fr) 2004-05-27 2005-05-26 Systeme de divertissement de bord a communication sans fil entre les composants
BRPI0511464-0A BRPI0511464A (pt) 2004-05-27 2005-05-26 sistema de entretenimento em vÈo com comunicação sem fio dentre componentes
EP05754032.0A EP1749403A4 (fr) 2004-05-27 2005-05-26 Systeme de divertissement de bord a communication sans fil entre les composants
JP2007515339A JP2008501297A (ja) 2004-05-27 2005-05-26 コンポーネント間のワイヤレス通信を備える機内娯楽システム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57487304P 2004-05-27 2004-05-27
US60/574,873 2004-05-27

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WO2005120069A2 true WO2005120069A2 (fr) 2005-12-15
WO2005120069A3 WO2005120069A3 (fr) 2007-01-04

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EP (1) EP1749403A4 (fr)
JP (1) JP2008501297A (fr)
BR (1) BRPI0511464A (fr)
CA (1) CA2566416A1 (fr)
WO (1) WO2005120069A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
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DE102006031010A1 (de) * 2006-07-05 2008-01-10 Airbus Deutschland Gmbh Verfahren und Vorrichtung zum Übertragen von Daten
JP2010539814A (ja) * 2007-09-14 2010-12-16 パナソニック・アビオニクス・コーポレイション 乗り物情報システムのためのメディアデバイスインターフェースシステム及び方法
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DE102006031010A1 (de) * 2006-07-05 2008-01-10 Airbus Deutschland Gmbh Verfahren und Vorrichtung zum Übertragen von Daten
US7941139B2 (en) 2006-07-05 2011-05-10 Airbus Deutschland Gmbh Method and apparatus for the transmission of data
JP2010539814A (ja) * 2007-09-14 2010-12-16 パナソニック・アビオニクス・コーポレイション 乗り物情報システムのためのメディアデバイスインターフェースシステム及び方法
DE102010005695A1 (de) 2010-01-25 2011-07-28 Airbus Operations GmbH, 21129 Autarkes Monument in der Flugzeug-Druckkabine mit dezentraler Betriebsstoffversorgung und effizienter Energiewandlung
WO2011089016A2 (fr) 2010-01-25 2011-07-28 Airbus Operations Gmbh Ensemble autonome dans la cabine pressurisée d'un aéronef, doué d'une alimentation décentralisée en carburants et d'une conversion efficace de l'énergie
US10421550B2 (en) 2010-01-25 2019-09-24 Airbus Operations Gmbh Autarkic monument in an aircraft pressure cabin with decentralized operating medium supply and efficient energy conversion
EP3122053A1 (fr) * 2015-07-23 2017-01-25 Panasonic Avionics Corporation Transfert de données consommables pour véhicules
US9955199B2 (en) 2015-07-23 2018-04-24 Panasonic Avionics Corporation Transfer of consumable data to vehicles
WO2020146300A1 (fr) * 2019-01-08 2020-07-16 Thales Avionics, Inc. Transfert d'informations entre un dispositif utilisateur basé sur un véhicule et un serveur pour valider des informations d'utilisateur avant d'autoriser l'accès à internet
CN113454616A (zh) * 2019-01-08 2021-09-28 泰雷兹航空电子公司 在基于车辆的用户设备和服务器之间传输信息以在授予互联网访问权限之前验证用户信息
US11247778B2 (en) 2019-01-08 2022-02-15 Thales Avionics, Inc. Transferring information between a vehicle based user device and a server to validate user information before granting internet access

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JP2008501297A (ja) 2008-01-17
EP1749403A2 (fr) 2007-02-07
BRPI0511464A (pt) 2007-12-26
WO2005120069A3 (fr) 2007-01-04
EP1749403A4 (fr) 2013-11-20
CA2566416A1 (fr) 2005-12-15

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