Abstract:
A configuration method of a multimedia system comprising a first device and at least one adjacent device having a mechanism to communicate with the first device. The first device comprises a mechanism to read/write data from/to an NFC data carrier. The method comprises a set-up phase and an exploitation phase.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 14/204,362 filed Mar. 11, 2014, which claims the benefit of U.S. Provisional Application No. 61/775,737, filed Mar. 11, 2013. All of the foregoing are incorporated by reference in their entireties. 
    
    
     BACKGROUND 
     Near Field Communication Technology, known by the acronym “NFC”, is a wireless, high frequency communication technology, having a range of a few centimeters, for the exchange of information between multiple devices. This technology is derived from a combination of a smart card interface and a contactless reader in a single device. 
     An NFC device is able to communicate with other NFC devices as well as devices operating in accordance with the ISO 14443 standard (contactless smart cards). 
     NFC standards cover the NFC communication protocols and data exchange formats and are based on existing standards for radio frequency identification (RFID) such as ISO/IEC 14443, FeliCa and ISO/IEC 18092. They include standards defined by the “NFC Forum”, which was founded in 2004 by Nokia, Philips and Sony and includes more than 180 members. 
     NFC is an extension of RFID technology, allowing two-way communication between two devices, while previous systems, such as contactless smart cards, allowed only one-way communication. 
     NFC technology is usable only over a short distance of a few centimeters, which implies a voluntary user and prevents unintentional use. 
     NFC devices can be active or passive. A passive NFC device, such as a tag, a smart card or a simple chip affixed to an object contains information only readable by other NFC-enabled devices. A passive NFC device is powered by the electromagnetic field generated by a reader (active device) and therefore does not need its own power supply. 
     An active NFC device, however, is a device that generates an electromagnetic field. This generation can be done to communicate with a passive device (described above) or to establish a communication channel between two active devices. 
     The fact that a device like a smartphone has a power supply does not necessarily mean that it will work in active mode only. That is, a smartphone can handle the NFC interface in active or passive modes. In passive mode, the device emulates a chip card. In this mode, the smartphone (or any other portable device such as tablets) will store, in a secure memory, information that is normally stored in a card. Thus, when the smartphone detects an electromagnetic field, it can access the secure memory and a corresponding device having NFC capacities will be able to read information in passive mode from the secure memory. 
     The following are examples of known applications that use NFC technology:
         payment using a credit card or contactless (e.g., mobile phone, smartphone, laptop, tablet computer, etc.) mobile device on a contactless payment terminal;   payment at a parking terminal accepting contactless payment using an NFC mobile terminal;   contactless purchase of a ticket and contactless validation of a ticket displayed on a mobile phone;   management of coupons, loyalty points, etc. in a store, at retailers, etc. (e.g., couponing);   accessing and starting a vehicle using a mobile phone;   reading product information (e.g., price, composition, allergy, etc.) in a store;   controlling physical access to premises (e.g., meeting room, business, classroom, etc.);   exchanging profiles between users of a social network or a game by bringing phones close together (e.g., user peer-to-peer communications);   reading an electronic business card with a PDA (Personal Digital Assistant);   synchronizing Internet bookmarks and contacts between a PDA and a mobile phone;   recovering a key to a WiFi access point approaching an NFC device from an authorized terminal; and;   accessing automation features of a building.       

     In a home environment, different devices such as e.g., a television, decoder, DVD and/or HD (hard disk) reader/writer, media player are connected to each other over a home network. As can be appreciated, it could be difficult to configure these various devices when a specific function is required. Many operations are necessary to select a specific source, switch the appropriate devices, and select the appropriate setting before finally enjoy the program desired by the consumer. 
     SUMMARY 
     Embodiments disclosed herein store configuration data on an NFC portable device. Each device comprises configuration data defining the input and output setting of the device as well as any internal settings. The configuration message comprises the configuration data and the device identifier. The collection of the configuration messages for a system is referred to herein as a set of configuration data. The set of configuration data refers to a set of connected devices, and the configuration messages can be transmitted to a first device to configure the device; the first device transferring the configuration messages to the other devices for subsequent configuration of these devices. 
     According to a first embodiment, the first device comprises a built-in NFC reader adapted to read the set of configuration data stored in the NFC portable device. The first device is connected with the other devices by various communication methods such as e.g., Wifi, HDMI, Ethernet, Bluetooth. The configuration data is passed to the other devices to complete the configuration of the system. 
     The embodiments disclosed herein includes two primary steps: set-up and the exploitation of the configuration data. The set-up phase includes the gathering of the configuration of each device and the transmission of the configuration data to the portal device, i.e., the device in connection with the NFC card. The exploitation phase occurs when a user is ready to configure the system and use one of the NFC data carriers to pass the configuration data to the system. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURE 
       Embodiments disclosed herein and their advantages will be better understood with reference to the enclosed drawing and to the following detailed description, in which: 
         FIG. 1  illustrates a system comprising a plurality of devices that are connected together and configured using an NFC data carrier. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  illustrates a multi-media system comprising different devices connected together to provide a variety of entertainment experiences. The system can provide for a plurality of particular entertainment experiences such as e.g., watching broadcast channels, watching recorded movies (on DVD or local hard disk), watching video content stored in a remote storage, playing a video game, listening to music, etc., as well as a combination of these experiences, for example when a media content should be recorded while another content is being played back. 
     Set-Up Phase 
     The first phase is the set-up phase in which the system is set to a particular function, for example, watching a broadcast channel and using the 5:1 audio system to enjoy better sound. Each device can have several inputs and several outputs. The television D 4  communicates its setting (e.g., selection of input L 4  or L 5  or the output) as a configuration message to the set-top box D 2 . The set-top box device D 2  is connected to an audio/video signal L 2 , which could be the cable network, a connection to a satellite receiver or a terrestrial antenna. The connection between devices D 2  and D 4  is preferably an HDMI connection. This connection allows the transfer of configuration data due to a CEC (Consumer Electronics Control) connection or an Ethernet data connection. In the illustrated example, device D 2  does not contain an NFC reader and these configuration messages should be transferred to device D 3 , which is e.g., a network media server. Device D 3  is connected with the Internet (L 1 ) and can access on-line media content. The connection between devices D 3  and D 2  is preferably HDMI with the same possibility to transfer configuration data. If, for example, the version of HDMI is not compliant with the dialog necessary for transferring the configuration messages, devices D 3  and D 2  can communicate via a Bluetooth channel. The media content will be transferred through the HDMI while the configuration data can use a different route, for example, the Bluetooth channel. 
     In the example above, the state of device D 1  is not important since it will not play a role in the expected function. However, in other examples, device D 1  will be configured as well. Device D 1  can be a DVD/HD recorder and can communicate with device D 2  via HDMI or Ethernet. 
     Once the configuration data from each device is collected and sent to the media player D 3 , the set of configuration data is transferred and stored in an NFC device. 
     In this phase, device D 3  can execute a function referred to as device discovery. Device D 3  senses each of its connection to determine if another device is connected. If it is determined that another device is connected (i.e., a positive event), device D 3  tries to communicate via the discovered channel(s) (e.g., HDMI, Bluetooth, Ethernet or Wifi) and collect the configuration message of each adjacent device. Device D 3  asks the adjacent device to replicate the same function so that the configuration data of a device such as e.g., screen D 4 , not directly connected with device D 3 , can pass its configuration data to device D 2  and then to device D 3 . An “adjacent device” is a device with which a direct connection can be established. It should be noted that each device has an identifier that is added as a header to the configuration data. When device D 2  receives the configuration data from the screen D 4 , the message comprises an identifier and the configuration data of the identified device, such as: 
     ID_D 4 , CONF_D 4 : the identifier of D 4  precedes the configuration data of D 4 . 
     This message is then transferred to device D 3  and device D 2  adds its header: 
     ID_D 2 ; ID_D 4 ; CONF_D 4   
     The first header being the first device to which the message will be sent during the exploitation phase (discussed below). The second header being the next device to which the message will be sent, and so on. 
     Preferably, each device generates and stores a list of identifiers of adjacent devices by collecting the identifiers of the adjacent devices. This list can be used to route the messages during the exploitation phase. 
     According to another embodiment, the message generated by a device is not modified and is forwarded to the adjacent device without adding the identifier of said device. 
     These messages, comprising configuration data and identifier(s), are stored in an NFC data carrier due to the reader located in device D 3 . The NFC data carrier can be a smartcard, dongle or any type of passive NFC device. In addition, the NFC data carrier could be a smartphone or a tablet in which the configuration data is stored. 
     The configuration of the system is linked with one NFC data carrier when the NFC data carrier is a passive device. However, when the NFC data carrier is an active device such as e.g., a smartphone, it is possible to store a plurality of configuration sets, each being the specific configuration of each device in the system. Each time that a specific configuration is acquired and stored, the user initiates a command preferably with the device hosting the NFC reader and this device collects the configuration data of each device of the system and stores them in the NFC data carrier. 
     Exploitation Phase 
     The NFC data carrier is presented to one of the devices that is part of the system and comprises an NFC reader. This device could be the same device D 3  that was used during the set-up phase of another device. 
     As illustrated in  FIG. 1 , a remote control comprises an NFC reader. This allows the user to simply activate the NFC function on the remote control (in order to save the battery life of the remote control) and to read in the configuration data from the NFC data carrier. Once in the remote control, the set of configuration data is sent to the device with which the remote control is normally connected to (e.g., device D 1  in the illustrated example). 
     Device D 1 , when the data is received, determines if some configuration data is intended for device D 1 . If so, the configuration data is used to configure device D 1 . The other configuration data is then forwarded to other devices. In the example of the  FIG. 1 , the configuration data received by device D 1  is then transferred to device D 2 . Device D 2  extracts the configuration data intended for device D 2  and passes the other data to the adjacent devices. 
     The list of adjacent devices can be used to route each message to its destination. When the identifier of a message is not present in the list, device D 1  sends the message of an non-adjacent device to all devices connected to it. Upon receipt of this message, device D 2  checks its identifier list and determines that it is connected to device D 4 . Device D 2  can then forward the message to device D 4 .