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WO2012059115A1 - Procédé de réalisation d'une conférence téléphonique et équipement destiné à mettre en oeuvre ce procédé - Google Patents

Procédé de réalisation d'une conférence téléphonique et équipement destiné à mettre en oeuvre ce procédé Download PDF

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Publication number
WO2012059115A1
WO2012059115A1 PCT/EP2010/006678 EP2010006678W WO2012059115A1 WO 2012059115 A1 WO2012059115 A1 WO 2012059115A1 EP 2010006678 W EP2010006678 W EP 2010006678W WO 2012059115 A1 WO2012059115 A1 WO 2012059115A1
Authority
WO
WIPO (PCT)
Prior art keywords
subgroup
teleconference
protected communication
participants
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2010/006678
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German (de)
English (en)
Inventor
Karl Klug
Jürgen Totzke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unify GmbH and Co KG
Original Assignee
Siemens Enterprise Communications GmbH and Co KG
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 Siemens Enterprise Communications GmbH and Co KG filed Critical Siemens Enterprise Communications GmbH and Co KG
Priority to PCT/EP2010/006678 priority Critical patent/WO2012059115A1/fr
Publication of WO2012059115A1 publication Critical patent/WO2012059115A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1813—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
    • H04L12/1822—Conducting the conference, e.g. admission, detection, selection or grouping of participants, correlating users to one or more conference sessions, prioritising transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/563—User guidance or feature selection
    • H04M3/564—User guidance or feature selection whereby the feature is a sub-conference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42365—Presence services providing information on the willingness to communicate or the ability to communicate in terms of media capability or network connectivity

Definitions

  • teleconferencing In contrast to conventional conferences, in which the participants are located in a room and also have the opportunity, depending on affiliation to a group of participants, to position themselves spatially in the conference room so that a vote, especially on non-verbal communication, even during the conference is possible, teleconferencing generally does not provide adequate ability to vote participants during the teleconference within a group of participants.
  • the invention is therefore based on the object to provide a teaching for technical action that can contribute to solving the problems associated with this situation.
  • This object is achieved by a method for carrying out a teleconference or by a device for carrying out such a method according to one of the independent claims.
  • the subclaims are intended to provide advantageous developments of the invention under protection.
  • a method for carrying out a teleconference in which a teleconference circuit is established between subscribers of the teleconference, and in which at least one protected communication connection is established at least temporarily for at least one subgroup of all subscribers. At least a part of the subscribers of this subgroup can exchange information via this protected communication connection. This information is made available to those participants in the teleconference who do not belong to at least one subgroup, at least temporarily not accessible via this at least one protected communication connection.
  • a teleconferencing circuit and also a telephone conference circuit should be understood to mean an interconnection of telecommunication connections between the participants of a teleconference exchanging voice and possibly video or video signals between the participants in such a way that all the participants hear one or more speaking participants and ever according to the settings of the conference system, also can see.
  • conference call emphasizes the linguistic importance of the language as opposed to pictures or other data, and we thus the fact that a teleconference without video signals, alone with voice calls, ie a telephone conference, between the participants even in the age of video telephony, more conceivable is as a call without speech signals, which is carried out solely via video signals or other signals.
  • conference call is thus used, on the one hand, for the special case of a teleconference which exclusively uses voice signals and, on the other hand, for a subsystem of a teleconference which also uses voice signals but also other signals, such as video signals.
  • Telko English audio conference
  • Examples of such service features include the Einberu ⁇ fen additional participants (English add-on Conference), the independent subscribers dial (English Dial-in Conference), the convening of conference participants using a list (English Preset Conference), the introduction of announcements, the assignment of moderator functions and the authorization to transfer such to other participants, the possibility of side conferences and the simultaneous switching through several speakers (English n-loudest), for example, only the n loudest speaker are switched through.
  • the protected communication links of subgroups may preferably be realized as side conferences in which a corresponding access control ensured that only members have a subgroup access to the protected communication link.
  • a conference call can connect between three and ten or more participants. Some providers even provide virtual conference rooms for several hundred participants. Conference rooms are usually provided for security reasons with an access PIN, which will be communicated to invited participants.
  • Moderator functions for example, allow them to be switched to loud or explicitly to give them the floor. Also known is the application sharing, so the ability to share with the other participants his screen and its applications during the conference and thus to be able to present, for example, presentations.
  • a conference circuit should preferably be understood to mean a separate technical functional unit in exchanges or external servers (eg media servers), which allows several subscribers to a conference interconnect.
  • external servers eg media servers
  • Such conferencing provides additional service features needed for a large conference call beyond a simple three-party conference.
  • conference call is often equated with the term telephone conference. However, it is only with the technical unit conferencing that you have the opportunity to actually conduct a conference call. In previous analog telephone network, a conference call could be manually reserved and set up, or a telephone system with a corresponding number of connection lines was required at the initiating subscriber. In IP-based telecommunications networks, conferencing is provided by external media servers. Such conference calls can accommodate 200 and more subscribers and a large bundle of service features.
  • conference line in telecommunications means an active or inactive voice channel in a telephone conference at the end of which a subscriber or another telephone conference is connected. If several telephone conferences are cascaded in this way also speaks of daisy chain Conference. However, this possibility does not exist for signaling reasons usually for a conference call and is usually possible only for tripartite conferences, for example, analog subscribers.
  • a protected communication connection is understood to mean a communication connection between the subscribers of a subgroup of all subscribers of the teleconference which the subscribers of this subgroup can exchange information with each other without that information on the protected communication link being made available to the subscribers who do not belong to that subgroup.
  • a protected communication connection can be executed as a further, parallel to the actual teleconferencing circuit and independent of this second teleconferencing.
  • a parallel and independent further teleconferencing circuit to which only subscribers of a subgroup are involved, is set up in parallel to the actual teleconferencing circuit, in which all subscribers of the teleconference participate.
  • the terms subgroup and interest group are used synonymously in this context.
  • the interest group refers to a group of participants with the same interests, at least with regard to one topic. Participants of an interest group will therefore preferably join together to form a subgroup within the meaning of the present invention.
  • the participants of the teleconference use in connection with all established teleconferencing circuits, the same telecommunication terminals, which are preferably equipped with facilities that allow the participants between the individual teleconferencing switch back and forth.
  • a subscriber to a subset his microphone depending on which teleconferencing he wants to be transmitted at a given time, between the available teleconferencing circuits, depending on his affiliation to different subgroups, toggle.
  • a subscriber wishes to be heard by all subscribers of the teleconference, he switches his microphone to the teleconference's main teleconference circuit, which transmits his voice signal to all subscribers of the teleconference, as far as he is registered in the teleconference circuit as an active speaker.
  • this subscriber wishes to be heard only by the subscribers of his subgroup, he switches his microphone to the further teleconference circuit belonging to this subgroup, to which the subscribers of the subgroup, but not the subscribers outside the subgroup, have access.
  • About this belonging to the subset teleconferencing therefore takes place a protected communication in the sense that the information exchanged via this communication link information only the participants of the subgroup are accessible. In this sense one can speak of a protected communication connection.
  • the information exchanged over the at least one protected communication link comprises special information obtained by data processing techniques from image data taken by at least one subscriber of the subgroup during the teleconference.
  • image data are video data or individual images taken with a camera, which are preferably compressed or otherwise be further processed with data processing methods to make the results of this processing accessible to the participants of the subgroup.
  • the data processing methods that can be used in this case include, in particular, methods for data reduction, preferably data compression methods or methods for undersampling digital images, in which the number of pixels is reduced.
  • Further possibilities for data processing processing of the image data are the feature extraction, wherein here different methods can be used with which a distinction can be made between individual facial expressions, such as the facial expression of consent or facial expression of rejection or the facial expression of indifference.
  • Data processing techniques of gestures or facial expressions are preferably used for this purpose, with the aid of which symbolic information can be derived from image data or from video data, with the aid of which the participants within a subgroup can vote on specific topics or questions.
  • From the area of facial expressions recognition different methods of classifying facial expressions known to the person skilled in the art can be used, with which symbolic information can be obtained from image or video data of the faces of the participants, expressing the internal position of these participants on specific topics or questions reflect.
  • gesture recognition or “gesture recognition” is intended in this context to mean the automatic recognition of gestures carried out by humans with the aid of an information technology system, preferably a computer.
  • Computer science has provided a number of algorithms and mathematical methods for recognizing gestures and the use of gestures for human-computer interaction and is constantly developing the procedures. Every posture and body movement can represent a gesture in principle. The greatest importance is the recognition of hand and head gestures.
  • camera-based gesture recognition and mimic recognition systems are employed.
  • the cameras are used to create pictures of a participant in a teleconference. Both systems with a camera and with multiple cameras are preferably used.
  • Camera-based techniques rely on image analysis techniques to detect the posture or facial expressions of a participant in a teleconference.
  • Preferred tools for image analysis are the so-called optical flow for motion extraction, the Sobel operator, so-called wavelets such as the Gabor wavelets, the so-called Gauss-Laplace pyramid, the color classifiers, for example for skin color classification, the Hough transformation and the Contrast analysis for detection of geometric objects.
  • wavelets such as the Gabor wavelets, the so-called Gauss-Laplace pyramid
  • color classifiers for example for skin color classification
  • the Hough transformation the Contrast analysis for detection of geometric objects.
  • models for example a so-called rigid 2D or 3D model or so-called statistical models such as the Active Shape Model or Point Distribution Model.
  • the Sobel operator is a simple edge detection filter that is widely used in image processing where it is used as an algorithm using convolution (Sobel algorithm). This calculates the first derivative of the pixel brightness values, while simultaneously smoothing orthogonally to the direction of derivation.
  • the algorithm uses convolution using a 3x3 matrix (convolution matrix) that generates a gradient image from the original image. These are used to display high frequencies in the picture with gray values. The areas of greatest intensity are where the brightness of the original image changes the most and thus represents the largest edges. Therefore, a threshold function is usually applied after folding with the Sobeloperator. However, the algorithm can also be applied to other 2-dimensional information.
  • avelet denotes the functions underlying a continuous or discrete avelet transformation.
  • wavelet was coined in the 1980s in geophysics (Jean Morlet, Alex Grossmann) for functions that generalize the short-time Fourier transform, but has been used since the late 1980s only in the usual meaning today.
  • the compact, continuous (to any order of differentiability) and orthogonal wavelets were discovered by Ingrid Daubechies (1988) and the algorithm of fast wavelet Transformation (FWT) using multi-scale analysis (MRA) developed by Stephane Mallat and Yves Meyer (1989).
  • MRA multi-scale analysis
  • the Gauss or Laplace pyramids also called Burt-Adelson pyramids or Gauss and Laplace pyramids, are algorithms of digital signal processing.
  • Fuzziness and sharpness are characteristics of digital images to recognize certain structures or to deliberately manipulate images.
  • the individual frequency bands of an image represent the sharpness and blur of an image.
  • filter cores or the Fourier transformations can be used.
  • the sensor information flows into algorithms that analyze the raw data and recognize gestures. It uses algorithms for pattern recognition. To remove noise in the input data and to reduce data, the sensor data is often pre-processed in the first step. Subsequently, features are extracted from the input data. These features serve as input to the classification. Hidden Markov Models, Artificial Neural Networks and other techniques are often used for this purpose Origin mostly used in research on artificial intelligence.
  • Preferred embodiments of the invention provide, at least temporarily, to modify, in particular restrict or expand, the circle of those subscribers to whom the information of a protected communication connection is made available.
  • a teleconference circuit which is permanently accessible to all subscribers, exclusively to use protected communication connections, ie subsets reserved teleconferencing, which are temporarily made available to participants outside the respective subgroup, in particular all participants of the teleconference.
  • the protected communication devices are then protected only at the times for the subset in which they are made available to non-subscribers outside the subset.
  • a protected communication link is configured to be implemented by at least one communication channel, which may comprise a voice channel and a video channel and possibly other data channels, within a teleconference circuit comprising a plurality of communication channels.
  • the teleconferencing circuit consists, at least temporarily, of a plurality of protected communication connections which are at least partially and at least temporarily also made available to subscribers outside the subgroup, in particular also at times to all subscribers of the teleconference.
  • the protected communication link for the sub-group to which he belongs all partici ⁇ numbers of the conference will be made available for this time and on the other hand, when that participant turns only to the participants of its subgroup, this protected communication connection are made available only to the participants of the subgroup.
  • the invention provides at Tele ⁇ conferences with participants belonging to different interest groups to set up secure communication links within the meaning of the invention for these stakeholders.
  • the interest groups are therefore identical to the subgroups mentioned above.
  • the protected communication links may include as separate bilateral (P2P) connections between two persons or as a multilateral (MP2MP) connections between a plurality Perso ⁇ NEN, the voice channels and video channels preferably established.
  • P2P bilateral
  • MP2MP multilateral
  • FIG. 1 schematically shows a teleconferencing circuit, in particular a telephone conference circuit with seven subscribers and the associated signal streams;
  • FIG. 2 shows a preferred embodiment of the present invention.
  • FIG. 1 schematically shows a conventional telephone conference circuit TCS with subscribers PI, P2... P7.
  • FIG. 1 shows the situation in which the subscriber P2 is the only one speaking, and his voice signal 1 is supplied via the telephone lines 2 and 3 to the other telephone conference subscribers by means of the telephone conference circuit TCS.
  • FIG. 2 shows schematically a preferred embodiment of the invention, in which the conference call subscribers P5, P6 and P7 belong to the subgroup UG1 and in which the conference call subscribers P3 and P4 belong to the subgroup UG2.
  • the voice signal of the subscriber P2 is fed via the connecting line 1 to the telephone conference system TCS, which distributes this signal to all subscribers via the connecting lines 2 and 3.
  • the subscribers P3 and P4 have a secure communication connection available, which is communicated via the group conference circuit GCS, this group conference circuit receiving the audio signals 4 and 5 from the subscribers P3 and P4 respectively and the members of the subgroup UG2 via the connection line 6 forwards.
  • the audio signals 10, 11 and 12 are received by this or by another group conference circuit GCS and via corresponding connection lines 7, 8 and 9 to the Subscribers P5, P6 and P7 of the subgroup UG1 forwarded.
  • the group call will be configured such that a strict separation of Kommunikati ⁇ onsISTen the respective sub-groups is in any event ensured if this separation is desired, which according to the determination of the protected communication links Often the rule will be.
  • the protected communication links are preferably provided by an additional media channel, particularly preferably by a so-called instant messaging (IM) channel or by means of a so-called dedicated presence status.
  • instant messaging refers to the ability to transmit real-time text messages over an Internet Protocol-based network, such as the Internet or a corporate network. Often, instant messaging messages are also encrypted to increase security.
  • users preferably belong to a single Session Initiation Protocol Domain (SIP) domain.
  • SIP Session Initiation Protocol Domain
  • the term presence refers to a feature that makes it possible to detect the reachability or availability of another user in a network.
  • Both instant messaging and the procedure of "Dedicated Presence Status" are suitable interests ⁇ the end of an interest group meeting groups display. In this way it is possible to join an interest group session with a total conference call as soon as the affected stakeholders have indicated the end of their stakeholder meeting.
  • the user administration will introduce an additional role of a stakeholder moderator, which will be determined by the teleconferencing moderator, preferably at the initiation or scheduling or announcement of the teleconference.
  • the stakeholder moderator preferably also has the task of selecting participants in the conference call and making them members of the interest group led by him or her. As soon as or as long as the sessions of different interest groups are split into different protected communication links, the confidentiality of the communication within the interest groups is preserved.
  • the construction of confidential information within the interest groups is preferably realized via a hint or gesture channel.
  • the group communication circuits are arranged so that an interest group moderator can involve external subscribers, such as consultants, in the protected communication of the interest group as long as this protected communication connection of the interest group is not made accessible to the other teleconference subscribers.
  • Some embodiments of the invention provide that pa rallel to an audio or telephone conference Videodes th or data connections are connected, via which di participants of the teleconference together with each document to Doku, preferably by way of so-called application sharing can work together.
  • application sharing preferably by way of so-called application sharing can work together.
  • these private copies may be made accessible after termination of the protected cooperation within the interest group via the teleconferencing system, which is also equipped with corresponding data channels for application sharing.
  • the individual embodiments of the invention are preferably carried out by means of communication systems, such as so-called soft PBX systems or by means of so-called unified communication systems, which support a multiplicity of different media channels (media channels), in particular voice connections, video connections and instant messaging connections being supported can.
  • a point-to-point or multipoint-to-multipoint IM session may be associated with a conference call.
  • gestures such as so-called emoticons can be exchanged in addition to plain text messages.
  • the subscribers' subsets or subgroups are preferably subsets of all participants in the conference call for which additional bilateral P2P connections or multilateral (MP2MP) instant messaging sessions are established, preferably when the conference call is started, preferably a hint channel (Hint Channel ) or to transfer gestures between the participants of an interest group (subgroup), preferably using common or special symbols, such as so-called emoticons.
  • Hint Channel hint channel
  • emoticons preferably using common or special symbols, such as so-called emoticons.
  • the invention preferably provides for the structuring of a telephone conference and the conference participants, which preferably supports the establishment of additional media channels for the transmission of hints and gestures, which are automatically integrated into the conference call using the protected communication links according to the invention.
  • an instant messaging session is adapted to a changed number of participants as conference participants join or leave a session.
  • a hint and / or gesture channel may also be provided by means of a mobile phone, preferably by providing a data channel adjacent to the voice channel.
  • a participant's gestures or facial expressions may be tracked using a camera, preferably using facial recognition, face tracking or similar techniques, and preferably wherein the instantaneous situation is translated into a corresponding symbol or sequence of symbols, preferably translated into emoticons.
  • the current situation for example the mood of the participants or of some participants of an interest group (subgroup), can preferably be displayed as a snapshot on displays of all or some participants of an interest group, wherein the display is the display of a telephone, a mobile telephone. fons, a desktop computer, a mobile computer, or other information technology devices.
  • a protected communication link such crizoswei- se a Gestikkanal can, especially if all partici ⁇ mer agree to an interest group, some or all participants outside of an interest group or subgroup of the conference call can be made accessible.
  • Embodiments of the invention using pointers and / or gesture channels are particularly advantageous in the context of teleconferencing, in which video channels are used, that is in connection with so-called video conferencing.
  • any type of media channel is suitable for the protected communication of the subscribers of a subgroup, in particular so-called video distribution systems, particularly preferably when these are used as feedback channels.
  • Such methods are particularly advantageous in the context of automatic gesture recognition.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un procédé de réalisation d'une conférence téléphonique, un circuit de téléconférence étant établi entre les participants à la téléconférence et une liaison de communication protégée étant établie au moins temporairement pour au moins un sous-groupe de tous les participants. Grâce à cette liaison de communication protégée, au moins une partie des participants à ce sous-groupe peut échanger des informations. Ces informations ne sont au moins temporairement pas accessibles par cette liaison de communication protégée pour les participants à la téléconférence qui n'appartiennent pas audit sous-groupe.
PCT/EP2010/006678 2010-11-02 2010-11-02 Procédé de réalisation d'une conférence téléphonique et équipement destiné à mettre en oeuvre ce procédé Ceased WO2012059115A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/006678 WO2012059115A1 (fr) 2010-11-02 2010-11-02 Procédé de réalisation d'une conférence téléphonique et équipement destiné à mettre en oeuvre ce procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/006678 WO2012059115A1 (fr) 2010-11-02 2010-11-02 Procédé de réalisation d'une conférence téléphonique et équipement destiné à mettre en oeuvre ce procédé

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PCT/EP2010/006678 Ceased WO2012059115A1 (fr) 2010-11-02 2010-11-02 Procédé de réalisation d'une conférence téléphonique et équipement destiné à mettre en oeuvre ce procédé

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023158658A1 (fr) * 2022-02-15 2023-08-24 Immersitech, Inc. Gestionnaire de son central

Citations (5)

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Publication number Priority date Publication date Assignee Title
US20050080849A1 (en) * 2003-10-09 2005-04-14 Wee Susie J. Management system for rich media environments
WO2006034067A2 (fr) * 2004-09-17 2006-03-30 Nextel Communications, Inc. Systeme et methode pour etablir un appel reparti entre plusieurs abonnes et une session marginale
US7127487B1 (en) * 2001-10-15 2006-10-24 3Com Corporation System and method for sidebar functionality in a regular conference system
US20080159509A1 (en) * 2007-01-03 2008-07-03 Lloyd Whitfield Methods, systems, and products for monitoring conferences
WO2009092242A1 (fr) * 2007-12-27 2009-07-30 Huawei Technologies Co., Ltd. Procédé de mise en œuvre de sous-conférence, procédé, appareil et terminal de mise en œuvre de conférence privée

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7127487B1 (en) * 2001-10-15 2006-10-24 3Com Corporation System and method for sidebar functionality in a regular conference system
US20050080849A1 (en) * 2003-10-09 2005-04-14 Wee Susie J. Management system for rich media environments
WO2006034067A2 (fr) * 2004-09-17 2006-03-30 Nextel Communications, Inc. Systeme et methode pour etablir un appel reparti entre plusieurs abonnes et une session marginale
US20080159509A1 (en) * 2007-01-03 2008-07-03 Lloyd Whitfield Methods, systems, and products for monitoring conferences
WO2009092242A1 (fr) * 2007-12-27 2009-07-30 Huawei Technologies Co., Ltd. Procédé de mise en œuvre de sous-conférence, procédé, appareil et terminal de mise en œuvre de conférence privée

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023158658A1 (fr) * 2022-02-15 2023-08-24 Immersitech, Inc. Gestionnaire de son central

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