(19)
(11)EP 3 103 236 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
01.05.2019 Bulletin 2019/18

(21)Application number: 14708937.9

(22)Date of filing:  04.02.2014
(51)International Patent Classification (IPC): 
H04N 7/14(2006.01)
H04L 29/06(2006.01)
(86)International application number:
PCT/IB2014/000103
(87)International publication number:
WO 2015/118367 (13.08.2015 Gazette  2015/32)

(54)

MEDIA STREAM FROM SENDER SEEN ON RECEIVER SIDE BEFORE CONFIRMING RECEIPT OF MEDIA STREAM

MEDIEN-STREAM VON EINEM SENDER, DER AUF DER EMPFÄNGERSEITE VOR DER BESTÄTIGUNG DES EMPFANGS DES MEDIEN-STREAMS GESEHEN WIRD

FLUX MULTIMÉDIA PROVENANT D'UN ÉMETTEUR VU DU CÔTÉ RÉCEPTEUR AVANT CONFIRMATION DE RÉCEPTION DE FLUX MULTIMÉDIA


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(43)Date of publication of application:
14.12.2016 Bulletin 2016/50

(60)Divisional application:
19165783.2

(73)Proprietor: Sony Corporation
Tokyo 108-0075 (JP)

(72)Inventors:
  • APELQVIST, Johan
    SE-257 34 Rydebäck (SE)
  • BENGTSSON, Henrik
    SE-227 36 Lund (SE)
  • MÄRTENSSON, Linus
    SE-222 35 Lund (SE)
  • OHLSSON, Christopher
    SE-214 43 Malmö (SE)
  • ÖGREN, Per
    SE-217 55 Malmö (SE)

(74)Representative: Neij & Lindberg AB 
Pedellgatan 11
224 60 Lund
224 60 Lund (SE)


(56)References cited: : 
EP-A1- 2 117 190
US-A1- 2006 121 924
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    TECHNICAL FIELD



    [0001] The present invention relates in general to streaming media between electronic devices. The invention discloses a method for setting up a media stream between a sending device and at least one receiving device. In particular the invention provides an improved method for setting up a media stream between a sender and a receiver and displaying the media stream on the receiver side before confirming receipt of the media stream.

    BACKGROUND ART



    [0002] Today, when a user receives an incoming video call from someone on Skype, FaceTime or other video applications, the user interface has the same appearance as if it was an incoming voice call, thus the receiver does not see the initiator of the video call. This might be inconvenient for the receiver since he may not want to set up a video call or is not capable of receiving a video call.

    [0003] US2006121924 discloses a method and apparatus for selecting a Push to Video (PTV) service mode allowing transmission of a video information stream and a corresponding audio information stream from an originating wireless communication unit having floor control to a wireless target communication unit. Depending on a camera setting, a desired PTV service mode is invoked when a PTV call is initiated by activating a PTV function.

    [0004] EP2117190 suggests a method for implementing NAT traversal, in which a first MGW and an ICE mechanism supporting device obtain the local candidate information and the candidate information of the peer end. The first MGW and the ICE mechanism supporting device perform connectivity check according to the candidate information; and the first MGW and the ICE mechanism supporting device transmit media streams according to the result of the connectivity check.

    SUMMARY OF THE INVENTION



    [0005] With the above description in mind, then, an aspect of some embodiments of the present invention is to provide an method that makes it possible for the receiver to see a media stream, i.e. the initiator of a video call, before the receiver decides to answer the call and if he wants to turn on the camera of the receiving electronic device and send a media stream in return, which seeks to mitigate, alleviate or eliminate one or more of the above-identified deficiencies in the art and disadvantages singly or in any combination. This is obtained by methods as provided in the independent claims. Further embodiments are described in the dependent claims.

    [0006] According to one aspect of the disclosure, it provides for a method for setting up a media stream connection between a sending device and at least one receiving device, performed in the sending device. The method comprises the steps to send a session initiation message to the at least one receiving device, to send a request for a list of IP-addresses of the at least one receiving device, to receive the list of IP-addresses from the at least one receiving device, to set up uni-directional connection between the sending device and the at least one receiving device by using the received list of IP-addresses and to send the media stream via the uni-directional connection to the at least one receiving device. Such a solution allows for the user of the sending device to send the media stream before the receiving device is confirming receipt of the media stream. In one example, a video surveillance device will be able to set up a one way connection with a pre-selected receiving mobile phone and start to stream a surveillance video when trigged by an alarm without the receiving mobile phone has to confirm receipt of the media stream.

    [0007] According to one aspect of the invention, the session initiation message comprises information about which device to send the media stream, which is the receiving device and a list of IP addresses comprised in the sending device. This gives a more precise indication regarding which device to contact and which device set up a connection with.

    [0008] In one aspect the list of IP-addresses is collected by using Session Traversal Utilities for Network Address Translator protocol, STUN.

    [0009] In one aspect the step of set up uni-directional connection further comprises the step to connect to the receiving device using Internet Communication Engine protocol, ICE, by trying all the IP-addresses of the list belonging to the sending device comprised in the session initiation messages.

    [0010] In one aspect the step of connecting further comprises to create a peer-to-peer connection if ICE connection is established and to create a connection via a TURN server if ICE connection fails.

    [0011] According to one aspect the method further comprises the step of sending a request to set up a bi-directional connection between the sending device and the at least one receiving device.

    [0012] According to one aspect the method further comprises the step of receiving permission to set up a bi-directional connection from the receiving device. According to one aspect the method further comprises the step of receiving media stream from the receiving device. By permitting a setting up a bi-directional connection gives the receiving device the possibility to send a media stream in return to the sending device.

    [0013] According to one aspect the method further comprises the step of receiving a rejection to set up a bi-directional connection and to send media stream to said receiving device until receiving a disconnect of said uni-directional connection. This allows for the sending device to continue to stream media even though the receiving device do not confirm receipt or send a rejecting message.

    [0014] According to one aspect of the disclosure, it provides for a method for setting up a connection for streaming media between a sending device and at least one receiving device, performed in the receiving device. The method comprises the steps to receive a session initiation message from said sending device, to create a list of IP-addresses belonging to the receiving device and transmit the list to the sending device and to receive and present the media stream on a user interface of the receiving device for acceptance from the receiving device. Such a solution allows for the user of the receiving device to receive the media stream before the receiving device has confirmed the receipt of the media stream.

    [0015] According to one aspect the method further comprises the step to receive a request to set up a bi-directional connection between the receiving device and the sending device.

    [0016] According to one aspect the method further comprises the step to send permission to set up a bi-directional connection to the sending device. According to one aspect the method further comprises the step to send a media stream to the sending device. By permitting a setting up of a bi-directional connection gives the receiving device the possibility to send a media stream in return to the sending device.

    [0017] According to one aspect the method further comprises the step to connect to the sending device using Internet Communication Engine protocol, ICE, by trying all the IP-addresses of the list belonging to the receiving device.

    [0018] According to one aspect the method further comprises the step to send a rejection to set up a bi-directional connection to said sending device. By sending a rejection to connect to the sending device gives the receiving device the possibility to continue receiving the media stream from the sending device or not and at the same time the sending device will not see the user of the receiving device.

    [0019] The features of the above-mentioned embodiments can be combined in any combinations.

    [0020] Some embodiments of the invention provide for a method for setting up a connection and send the media stream from a sender to a receiver and present the media stream to the receiver before the receiver confirms receipt of media stream. It is an advantage with some embodiments of the invention that they may allow for the receiver to decide whether to answer an incoming video call, media stream, by sending a video stream in return, to answer without sending a video stream in return or not to answer. In some embodiment of the invention the sending device is a server, such as a surveillance camera, that stream video taken over a surveillance area. It is an advantage with this set up that the surveillance video is streamed to the receiver before the receiver confirms receipt, which may be of high importance if i.e. someone is trespassing or if there is a fire.

    Brief Description of Drawings



    [0021] Further objects, features and advantages of the present invention will appear from the following detailed description of the invention, wherein embodiments of the invention will be described in more detail with reference to the accompanying drawings, in which:

    Figure 1 discloses a block diagram of an electronic device, e.g. a mobile phone where the method is implemented.

    Figure 2a-c discloses a system comprising of a sending electronic device and a receiving electronic device according to the disclosure.

    Figure 3 discloses a block diagram of a sending electronic device e.g. a mobile phone where the method is implemented.

    Figure 4 discloses a block diagram of a receiving electronic device e.g. a mobile phone where the method is implemented.

    Figure 5 discloses a flowchart of the method in a sending electronic device according to the disclosure.

    Figure 6a-b discloses a flowchart of the method in a sending electronic device according to the disclosure.

    Figure 7 discloses a flowchart of the method in a receiving electronic device according to the disclosure.


    Description of Embodiments



    [0022] The invention makes it possible for a receiver of a media stream, e.g. a video call, to view the media stream, e.g. video of the initiator of the video call, before the receiver decides to answer the video call. The receiver may also be able to decide whether to setup a media stream in return, e.g. turn on the camera on the receiving device and streaming media in return, or only to receive the streaming media, e.g. from a surveillance camera.

    [0023] Streaming media is media that is constantly received by and presented to an end-user, e.g. receiving device, while being delivered by a provider, e.g. sending device. Live streaming media, which refers to content delivered live over Internet, requires a sensor for the media, e.g. a camera, an encoder, comprised in a controller, to digitize the content, a media publisher, e.g. a view finder comprised in the sending and the receiving electronic device, and a content delivery network to distribute and deliver the content. Media can be video from a camera sensor, temperature from a temperature sensor, infrared light from a heating sensing camera, sound from a microphone, pulse from a pulse sensor, pressure from a pressure sensor.

    [0024] Embodiments of the present invention relate, in general, to the field of electronic devices. The present invention is for example applicable in electronic devices such as mobile telephones, pagers, communicators, wearable devices such as wristlet, clock or the like, smart phones, laptops, computers, or electronic organizers. The present invention is applicable and suitable for all electronic devices with visual interface and wireless capability, connectable to a server or any type of external memory/processor source. The description is focused on components relevant to the specific objects and functions of the invention while other components may be conventional. However, for the sake of clarity and simplicity, most embodiments outlined in this specification are related to electronic communication devices or electronic devices.

    [0025] Embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference signs refer to like elements throughout.

    [0026] The invention will now be described in more detail. According to one aspect of the invention, shown in figure 1, an electronic device, e.g. a mobile phone, is illustrated generally at 100 or 200. However, as mentioned above, reference to "mobile phone" includes various other devices, such as, for example, those mentioned above.

    [0027] The mobile phone 100 comprises conventional components such as radio interfaces for wireless communication, an input unit 14, such as a number of keys, etc. The keys may include a number of keys having different respective functions. For example, the keys may include a navigation key, selection key or some other type of key. The mobile phone further comprises a case 17, a display 16, e.g. liquid crystal display, light emitting diode display, or other display and an on/off switch 18. The mobile phone also include a speaker, microphone, among others, which together with the display 16 and keys 14 may be used and function in the usual ways in which a mobile phone typically is used, e.g. to initiate, to receive and/or answer telephone calls, to send and to receive text messages, to connect with and carry out various functions via a network, such as the internet or some other network. These are examples, there may be other uses that currently exist or may exist in the future. The mobile phone further includes a controller circuit 12. The controller circuit is configured to execute the method according to the invention. The controller is typically a processor comprising a computer code for executing the method. However, the method may as well be hardware implemented or a combination of hardware and software.

    [0028] The mobile phone also includes a sensor, i.e. a camera 15, which is arranged to receive or to capture an image or a media stream, i.e. a video stream. The camera may be the same type of camera typically used in a mobile phone or it may be another type of camera. As an example, the camera 15, display 16 and an image capture key 14 may be used in a conventional manner to capture an image or filming, e.g. the view seen by the camera 15 may be shown on the display 16 while the user views that image or film and as desired selectively presses the image capture key 14 to capture an image or a video and to store the captured image or video in a memory 11.

    [0029] According to one aspect of the invention, as shown in fig 2a, 2b, 2c, a media stream is setup from a sending device 100, 110 to a receiving device 200, 210. In one example, as shown in figure 2a, a media stream is set up between a sending mobile phone 100 and a receiving mobile phone 200, i.e. a regular video call is set up. In another example, as shown in figure 2b, a media stream is set up between a sending mobile phone 100 to receiving electronic device 210, such as a computer, a server or the like. An example using this set up is when a sender is making an emergency call and set up a media stream to a receiving emergency operator. All kind of sensor data is streamed and stored at the operator before the operator has confirmed the receipt of the media stream. In yet another example, as shown in figure 2c, a media stream is set up between a sending electronic device 110, such as a wristlet, home alarm server, refrigerator server or heating device and a receiving mobile phone 200. An example using this set up is when the home alarm is activated and set up a video stream to a mobile phone of the user, which the user can watch without having confirmed receipt of the media stream, e.g. answering the call. The user can then decide whether to confirm the receipt of the media stream e.g. answer and inactivate the alarm or not to confirm, e.g. not answer, dependent of what is shown on the media stream. Another example using this set up is when the sending device is a wristlet with a blood pressure sensor, which is streaming blood pressure data to a receiving mobile phone. Yet another example using this set up is when the sending device comprises a heat sensor, which is streaming temperature data to a receiving mobile phone.

    [0030] According to one aspect of the invention, as shown in figure 3, the streaming video 220 is presented to the user 20 of the receiving device 200, 210, by using the view finder, on the display 16 of the receiving device before the receiving device confirms receipt of the streaming video. The user 10 of the sending device 100, 110 will not be able to see a streaming video, as shown in figure 4, showing the user 20 of the receiving device 200, 210. A still image of the user of the receiving device 121 will be shown until the receiving device has confirmed receipt of the streaming video and permitted a connection between the sending device and receiving, e.g. answering a video call. The user 10 of the sending device 100, 110 is made aware of that the camera 15 of the sending device 100, 110 is active by showing the streaming video 120 by using a view finder on the display 16 of the sending device.

    [0031] The method will now be described starting from figure 5 disclosing method steps, performed in a sending electronic device 100, 110, of setting up a connection for streaming media between the sending electronic device 100, 110 and at least one receiving electronic device 200, 210. When the described steps are not dependent on each other, these steps may be implemented in any combination.

    [0032] According to one aspect the user 10 of the sending device 100, 110 wants to set a media stream to a receiving device 200, 210 and the method is initiated by the sending electronic device 100, 110 is sending a session initiation message S10 to at least one receiving device 200, 210. There are usually one session used for sending signals and one session is used for sending media, i.e. video, sound or others. A session initiation message is a message used for setting up a media session, where media session is a channel for sending media or sound. The session initiation message also comprises information about who to contact, thus which device to send the media stream, which is the receiving device 200, 210 and a list of IP addresses comprised in the sending device 100, 110. In one example the step of sending a session initiation message S10 further comprises the step to, as shown in figure 6a, collecting the list of IP-addresses of the sending device S11 by using a Session Traversal Utilities for Network Address Translator, STUN, protocol or another suitable protocol and sending S12 the collected IP-addresses to the at least one receiving device.

    [0033] In one aspect the sending device is configured to send a request S20 for the IP-addresses of the at least one receiving device.

    [0034] In one aspect, the sending device 100, 110 receives a response S30 containing the list of IP-addresses from the at least one receiving device. In one example the step of receiving S30 IP-address further comprises the step to immediately start to set up a uni-directional connection S40 between the sending 100, 110 and the at least one receiving device 200, 210 using Internet Communication Engine protocol, ICE, by trying all the IP-addresses of the list belonging to the sending device. In one aspect, the sending device initiates the session using an out-of-bound protocol, i.e. Extensible Messaging and Presence Protocol, XMPP or similar via a server, i.e. a XMPP server.

    [0035] A uni-directional connection is a connection for one-way communication, such as streaming media from sending device to receiving device. A bi-directional connection is connection for a two-way communication, such as streaming media from sending device to a receiving device and from the receiving device to the sending device.

    [0036] In one aspect, as shown in figure 6b, the step of uni-directional connection S40 by using ICE establishment further comprises the step to create S41 a peer-to-peer connection if ICE connection is established. On the other hand, if ICE connection fails a connection is created S42 via a TURN server.

    [0037] In one aspect, the method further comprise a step to send the media stream S50 via the uni-directional connection to the at least one receiving device.

    [0038] In one aspect, the sending device sends a request for setting-up a bi-directional connection S60 with the at least one receiving device. In one example, the sending device receives permission S70 to set up a bi-directional connection between the sending device and the receiving device. When the connection is set up the sending device receive streaming media S80 from receiving device. In another example, the sending device receives a rejection to set up a bi-directional connection S90. Then the sending device may S91 continue to stream media or not. In one example the sending device continue to stream media through the uni-directional connection S92. In one example the sending device stops to send media and disconnect S93 the uni-directional connection.

    [0039] The method will now be described starting from figure 7 disclosing method steps, performed in a receiving electronic device 200, 210, of setting up a connection for streaming media between the sending electronic device 100, 110 and at least one receiving electronic device 200, 210. When the described steps are not dependent on each other, these steps may be implemented in any combination.

    [0040] According to one aspect, the receiving device 200, 210 is woken by a GCM notification or alike, receiving a session initiation message S100 from the session server with information about the sending device 100, 110 and the list of IP addresses of the sending device collected by the same.

    [0041] In one aspect, the receiving device 200, 210 creates a requested list of IP-addresses S110 by collecting its own IP-addresses and transmits the list of collected IP-addresses S120 to the sending device 100, 110 via the session server, i.e. XMPP server.

    [0042] In one aspect, the receiving device receives S130 and presents S140 streaming media S130 on a user interface of the receiving device 200, 210 for acceptance from the receiving device.

    [0043] In one aspect, the method further comprises the step to receive a request S150 to set up a bi-directional connection between the receiving device 200, 210 and the sending device 100, 110.

    [0044] In one example, when the user of the receiving device decides to confirm a bi-directional connection S150 the receiving device sends a permission to set up a bi-directional connection S160. In one aspect, the method further comprises the step to immediately start to connect S170 to the sending device 100, 110, using the ICE protocol, by trying all the IP-addresses of the list belonging to the receiving device 200, 210. Then a bi-directional connection is set up and the receiving device sends a media stream S180 to the sending device 100, 110.

    [0045] In another example, when the user of the receiving devices decides to not confirm a bi-directional connection S190 the receiving sends a rejection to set-up a bi-directional connection. Then the sending device can decide whether to continue to stream media through the uni-directional connection or to disconnect the connection and stop streaming media.

    [0046] In one embodiment, as shown in figure 2b, a media stream is set up between a sending mobile phone 100 to receiving electronic device 210, such as a computer, a server or the like. The sending mobile phone 100, sends a session initiation message S10 and a request for setting up a uni-directional connection S20 to the receiving server 220. Further the sending mobile phone receives a response S30 containing the list of IP-addresses from the receiving server. In one example the step of receiving S30 IP-address further comprises the step to immediately start to set up a uni-directional connection S40 between the sending mobile phone 100 and the receiving server 210, using ICE protocol, by trying all the IP-addresses of the list belonging to the sending device. In one aspect, the sending device initiates the session using an out-of-bound protocol, i.e. XMPP or similar via a server, i.e XMPP server.

    [0047] In one aspect, the step of setting up a uni-directional connection S40 by using ICE establishment further comprises the step to create S41 a peer-to-peer connection if ICE connection is established. On the other hand, if ICE connection fails a connection is created S42 via a TURN server.

    [0048] In one aspect, the method further comprise a step to send the media stream S50 via the uni-directional connection from the sending mobile phone to the receiving server.

    [0049] The receiving server 210 receives a session initiation message S100 from the sending mobile phone 100. The receiving server 210 further creates the requested list of IP-addresses by collecting its IP-addresses using Session Traversal Utilities for Network Address Translator, STUN, protocol S110 and initiates the session by transmitting the list of IP-addresses S120 using an out-of-bound protocol like XMPP or similar via a session server. The receiving server further receives a media stream S130 from the mobile phone and presents the received media stream or stores the received media stream in a memory of the receiving server.

    [0050] In one embodiment, as shown in figure 2c, a media stream is set up between a sending server 110 to a receiving mobile phone 200. The sending server 110, sends a session initiation message S10 and a request for setting up a uni-directional connection S20 to the receiving mobile phone 200. Further the sending server receives a response S30 containing the list of IP-addresses from the receiving mobile phone. In one example the step of receiving S30 IP-address further comprises the step to immediately start to set up a uni-directional connection S40 between the sending server 110 and the mobile phone 200, using ICE protocol, by trying all the IP-addresses of the list belonging to the sending server. In one aspect, the sending server initiates the session using an out-of-bound protocol, i.e. XMPP or similar via a server, i.e. XMPP server.

    [0051] In one aspect, the step of setting up a uni-directional connection S40 by using ICE establishment further comprises the step to create S41 a peer-to-peer connection if ICE connection is established. On the other hand, if ICE connection fails a connection is created S42 via a TURN server.

    [0052] In one aspect, the method further comprise a step to send the media stream S50 via the uni-directional connection from the sending server to the receiving mobile phone.

    [0053] The receiving mobile phone 200 receives a session initiation message S100 from the sending server 110. The receiving mobile phone 200 further creates the requested list of IP-addresses by collecting its IP-addresses using Session Traversal Utilities for Network Address Translator protocol, STUN, S110 and initiates the session by transmitting the list of IP-addresses S120 using an out-of-bound protocol like XMPP or similar via a session server. The receiving mobile phone further receives a media stream S130 from the sending server and presents the received media stream on a User Interface, such as a display of the mobile phone or stores the received media stream in a memory of the receiving mobile phone.

    [0054] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" "comprising," "includes" and/or "including" when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

    [0055] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

    [0056] The foregoing has described the principles, preferred embodiments and modes of operation of the present invention. However, the invention should be regarded as illustrative rather than restrictive, and not as being limited to the particular embodiments discussed above. The different features of the various embodiments of the invention can be combined in other combinations than those explicitly described. It should therefore be appreciated that variations may be made in those embodiments by those skilled in the art without departing from the scope of the present invention as defined by the following claims.


    Claims

    1. A method for setting up a media stream connection between a sending device (100, 110) and at least one receiving device (200, 210), performed in said sending device, comprising the steps:

    to send a session initiation message (S10) to said at least one receiving device;

    to send a request (S20) for a list of IP-addresses of said at least one receiving device;

    to receive (S30) said list of IP-addresses from said at least one receiving device;

    to set up a first connection which is uni-directional (S40) between said sending device (100, 110) and said at least one receiving device (200, 210) by using said received list of IP-addresses;

    to send a request (S60) to set up a second connection which is bi-directional between said sending device and said at least one receiving device;

    to send said media stream (S50) via said uni-directional connection to said at least one receiving device before receiving any permission to set up the bi-directional connection from the receiving device.


     
    2. The method according to claim 1, wherein said session initiation message comprises:

    a. information about which device to send said media stream, which is said receiving device (200, 210); and

    b. a list of IP addresses comprised in said sending device (100, 110).


     
    3. The method according to claim 1, wherein said method further comprising the steps:

    a. to receive (S70) permission to set up a bi-directional connection from said receiving device.


     
    4. The method according to claim 3, wherein said method further comprises the step:

    a. to receive media stream (S80) from said receiving device.


     
    5. The method according to claim 1, wherein said method further comprises the step:

    a. to receive a rejection (S90) to set up a bi-directional connection;

    b. to send media stream to said receiving device (S92) until receiving a disconnect (S93) of said uni-directional connection.


     
    6. The method according to claim 2, wherein said list of IP-addresses is collected by using Session Traversal Utilities for Network Address Translator protocol, STUN.
     
    7. The method according to claim 1, wherein the step of set up (S40) uni-directional connection further comprises the step:

    a. to connect to said receiving device using Internet Communication Engine protocol, ICE, by trying all the IP-addresses of the list belonging to said sending device.


     
    8. The method according to claim 7, wherein the step of connecting further comprises:

    a. to create a peer-to-peer connection (S41) if ICE connection is established;

    b. to create a connection via a Traversal Using Relays Network Translator server, server (S42) if ICE connection fails.


     
    9. A method for setting up a connection for streaming media between a sending device (100, 110) and at least one receiving device (200, 210), performed in said receiving device, comprising the steps:

    to receive (S100) a session initiation message from said sending device;

    to create (S110) a list of IP-addresses belonging to said receiving device and transmit (S120) said list to said sending device,

    to receive a request (S130) to set up a bi-directional connection between said receiving device and said sending device on one of said IP addresses;

    to receive (S130) streaming media on one of said IP addresses, over a first connection which is uni-directional (S40) from said sending device (100, 110) before sending a response to said request to set up a bi-directional connection, and

    to present (S140) said streaming media on a user interface of said receiving device for acceptance from the receiving device.


     
    10. The method according to claim 9, wherein said method further comprises the step:

    a. to send (S160) permission to set up a bi-directional connection to said sending device.


     
    11. The method according to claim 9 or 10, wherein said method further comprises the step:

    a. to connect (S170) to said sending device using Internet Communication Engine, ICE, protocol by trying all the IP-addresses of the list belonging to said receiving device.


     
    12. The method according to claim 10 or 11, wherein said method further comprises the step:

    a. to send (S180) a media stream to said sending device.


     
    13. The method according to claim 9, wherein said method further comprises the step:

    a. to send (S190) a rejection to set up a bi-directional connection to said sending device.


     


    Ansprüche

    1. Verfahren zum Aufsetzen einer Mediastream-Verbindung zwischen einer Sendevorrichtung (100, 110) und mindestens einer Empfangsvorrichtung (200, 210), durchgeführt in der Sendevorrichtung, die folgenden Schritte umfassend:

    Senden einer Sitzungsinitiierungsnachricht (S10) an die mindestens eine Empfangsvorrichtung;

    Senden einer Anforderung (S20) für eine Liste von IP-Adressen der mindestens einen Empfangsvorrichtung;

    Empfangen (S30) der Liste von IP-Adressen von der mindestens einen Empfangsvorrichtung;

    Aufsetzen einer ersten Verbindung, welche unidirektional ist, (S40) zwischen der Sendevorrichtung (110, 110) und der mindestens einen Empfangsvorrichtung (200, 210) unter Verwendung der empfangenen Liste von IP-Adressen;

    Senden einer Anforderung (S60), eine zweite Verbindung aufzusetzen, welche bidirektional ist, zwischen der Sendevorrichtung und der mindestens einen Empfangsvorrichtung;

    Senden des Mediastreams (S50) über die unidirektionale Verbindung an die mindestens eine Empfangsvorrichtung, bevor jegliche Erlaubnis empfangen wird, die bidirektionale Verbindung von der Empfangsvorrichtung aufzusetzen.


     
    2. Verfahren nach Anspruch 1, wobei die Sitzungsinitiierungsnachricht Folgendes umfasst:

    a. Informationen darüber, welche Vorrichtung, welche die Empfangsvorrichtung (200, 210) ist, den Mediastream senden soll; und

    b. eine Liste von IP-Adressen, die in der Sendevorrichtung (100, 110) vorgehalten wird.


     
    3. Verfahren nach Anspruch 1, wobei das Verfahren ferner den folgenden Schritt umfasst:

    a. Empfangen (S70) einer Erlaubnis, eine bidirektionale Verbindung von der Empfangsvorrichtung aufzusetzen.


     
    4. Verfahren nach Anspruch 3, wobei das Verfahren ferner den folgenden Schritt umfasst:

    a. Empfangen des Mediastreams (S80) von der Empfangsvorrichtung.


     
    5. Verfahren nach Anspruch 1, wobei das Verfahren ferner die folgenden Schritte umfasst:

    a. Empfangen einer Ablehnung (S90), eine bidirektionale Verbindung aufzusetzen;

    b. Senden eines Mediastreams an die Empfangsvorrichtung (S92) bis ein Trennen (S93) der unidirektionalen Verbindung empfangen wird.


     
    6. Verfahren nach Anspruch 2, wobei die Liste von IP-Adressen unter Verwendung eines Session-Traversal-Utilities-for-Network-Address-Translator-Protokolls bzw. STUN gesammelt wird.
     
    7. Verfahren nach Anspruch 1, wobei der Schritt des Aufsetzens (S40) einer unidirektionalen Verbindung ferner den folgenden Schritt umfasst:

    a. Verbinden mit der Empfangsvorrichtung unter Verwendung eines Internet-Communication-Engine-Protokolls bzw. ICE durch Ausprobieren aller IP-Adressen der Liste, die zu der Sendevorrichtung gehören.


     
    8. Verfahren nach Anspruch 7, wobei der Schritt des Verbindens ferner Folgendes umfasst:

    a. Herstellen einer Peer-to-Peer-Verbindung (S41), wenn eine ICE-Verbindung erstellt ist;

    b. Herstellen einer Verbindung über einen Traversal-Using-Relays-Network-Translator-Server bzw. Server (S42), falls die ICE-Verbindung fehlschlägt.


     
    9. Verfahren zum Aufsetzen einer Verbindung zum Mediastreamen zwischen einer Sendevorrichtung (100, 110) und mindestens einer Empfangsvorrichtung (200, 210), durchgeführt in der Empfangsvorrichtung, die folgenden Schritte umfassend:

    Empfangen (S100) einer Sitzungsinitiierungsnachricht von der Sendevorrichtung;

    Herstellen (S110) einer Liste von IP-Adressen, die zu der Empfangsvorrichtung gehören und Übermitteln (S120) der Liste an die Sendevorrichtung;

    Empfangen einer Anforderung (S130), auf einer der IP-Adressen eine bidirektionale Verbindung zwischen der Empfangsvorrichtung und der Sendevorrichtung aufzusetzen;

    Empfangen (S130) von Streamingmedia auf einer der IP-Adressen über eine erste Verbindung, welche unidirektional ist, (S40) von der Sendevorrichtung (110, 110) vor dem Senden einer Antwort auf die Anforderung, eine bidirektionale Verbindung aufzusetzen, und

    Präsentieren (S140) der Streamingmedia auf einer Benutzerschnittstelle der Empfangsvorrichtung für Akzeptanz durch die Empfangsvorrichtung.


     
    10. Verfahren nach Anspruch 9, wobei das Verfahren ferner den folgenden Schritt umfasst:

    a. Senden (S160) einer Erlaubnis, eine bidirektionale Verbindung zu der Sendevorrichtung aufzusetzen.


     
    11. Verfahren nach Anspruch 9 oder 10, wobei das Verfahren ferner den folgenden Schritt umfasst:

    a. Verbinden (S170) mit der Sendevorrichtung unter Verwendung eines Internet-Communication-Engine-Protokolls bzw. ICE-Protokolls durch Ausprobieren aller IP-Adressen der Liste, die zu der Empfangsvorrichtung gehören.


     
    12. Verfahren nach Anspruch 10 oder 11, wobei das Verfahren ferner den folgenden Schritt umfasst:

    a. Senden (S180) eines Mediastreams an die Sendevorrichtung.


     
    13. Verfahren nach Anspruch 9, wobei das Verfahren ferner den folgenden Schritt umfasst:

    a. Senden (S190) einer Ablehnung, eine bidirektionale Verbindung zu der Sendevorrichtung aufzusetzen.


     


    Revendications

    1. Procédé pour établir une connexion de flux multimédia entre un dispositif émetteur (100, 110) et au moins un dispositif récepteur (200, 210), exécuté dans ledit dispositif émetteur, comprenant les étapes consistant à :

    envoyer un message d'ouverture de session (S10) audit ou auxdits dispositifs récepteurs ;

    envoyer une demande (S20) pour une liste d'adresses IP dudit ou desdits dispositifs récepteurs ;

    recevoir (S30) ladite liste d'adresses IP dudit ou desdits dispositifs récepteurs ;

    établir une première connexion qui est unidirectionnelle (S40) entre ledit dispositif émetteur (100, 110) et ledit ou lesdits dispositifs récepteurs (200, 210) en utilisant ladite liste d'adresses IP reçue ;

    envoyer une demande (S60) d'établissement d'une seconde connexion qui est bidirectionnelle entre ledit dispositif émetteur et ledit ou lesdits dispositifs récepteurs ;

    envoyer ledit flux multimédia (S50) par le biais de ladite connexion unidirectionnelle audit ou auxdits dispositifs récepteurs avant de recevoir une quelconque autorisation d'établissement de la connexion bidirectionnelle à partir du dispositif récepteur.


     
    2. Procédé selon la revendication 1, dans lequel ledit message d'ouverture de session comprend :

    a. des informations indiquant sur quel dispositif envoyer ledit flux multimédia, qui est ledit dispositif récepteur (200, 210) ; et

    b. une liste d'adresses IP comprises dans ledit dispositif émetteur (100, 110).


     
    3. Procédé selon la revendication 1, dans lequel ledit procédé comprend en outre l'étape consistant à :

    a. recevoir (S70) l'autorisation d'établir une connexion bidirectionnelle à partir dudit dispositif récepteur.


     
    4. Procédé selon la revendication 3, dans lequel ledit procédé comprend en outre l'étape consistant à :

    a. recevoir un flux multimédia (S80) depuis ledit dispositif récepteur.


     
    5. Procédé selon la revendication 1, dans lequel ledit procédé comprend en outre les étapes consistant à :

    a. recevoir un refus (S90) d'établir une connexion bidirectionnelle ;

    b. envoyer un flux multimédia audit dispositif récepteur (S92) jusqu'à la réception d'une déconnexion (S93) de ladite connexion unidirectionnelle.


     
    6. Procédé selon la revendication 2, dans lequel ladite liste d'adresses IP est collectée en utilisant un protocole d'utilitaires de traversée de session pour un traducteur d'adresses réseau, STUN (Session Traversal Utilities for Network Address Translators).
     
    7. Procédé selon la revendication 1, dans lequel l'étape d'établissement (S40) de connexion unidirectionnelle comprend en outre l'étape consistant à :

    a. se connecter audit dispositif récepteur à l'aide d'un protocole ICE (Internet Communication Engine) en essayant toutes les adresses IP de la liste appartenant audit dispositif émetteur.


     
    8. Procédé selon la revendication 7, dans lequel l'étape de connexion comprend en outre :

    a. la création d'une connexion entre homologues (S41) si une connexion ICE est établie ;

    b. la création d'une connexion par un serveur Traversal Using Relays Network Translator (S42) en cas d'échec de la connexion ICE.


     
    9. Procédé pour établir une connexion de flux multimédia entre un dispositif émetteur (100, 110) et au moins un dispositif récepteur (200, 210), exécuté dans ledit dispositif récepteur, comprenant les étapes consistant à :

    recevoir (S100) un message d'ouverture de session en provenance dudit dispositif émetteur ;

    créer (S110) une liste d'adresses IP appartenant audit dispositif récepteur et transmettre (S120) ladite liste audit dispositif émetteur,

    recevoir une demande (S130) d'établissement d'une connexion bidirectionnelle entre ledit dispositif récepteur et ledit dispositif émetteur sur l'une desdites adresses IP ;

    recevoir (S130) du contenu multimédia en continu sur l'une desdites adresses IP, par une première connexion qui est unidirectionnelle (S40) depuis ledit dispositif émetteur (100, 110) avant d'envoyer une réponse à ladite demande d'établissement d'une connexion bidirectionnelle, et

    présenter (S140) ledit contenu multimédia en continu sur une interface utilisateur dudit dispositif récepteur pour l'acceptation par le dispositif récepteur.


     
    10. Procédé selon la revendication 9, dans lequel ledit procédé comprend en outre l'étape consistant à :

    a. envoyer (S160) l'autorisation d'établir une connexion bidirectionnelle avec ledit dispositif émetteur.


     
    11. Procédé selon la revendication 9 ou 10, dans lequel ledit procédé comprend en outre l'étape consistant à :

    a. se connecter (S170) audit dispositif émetteur à l'aide du protocole ICE (Internet Communication Engine) en essayant toutes les adresses IP de la liste appartenant audit dispositif récepteur.


     
    12. Procédé selon la revendication 10 ou 11, dans lequel ledit procédé comprend en outre l'étape consistant à :

    a. envoyer (S180) un flux multimédia audit dispositif émetteur.


     
    13. Procédé selon la revendication 9, dans lequel ledit procédé comprend en outre l'étape consistant à :

    a. envoyer (S190) un refus d'établir une connexion bidirectionnelle avec ledit dispositif émetteur.


     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description