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WO2013055369A1 - Collaboration électronique - Google Patents

Collaboration électronique Download PDF

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Publication number
WO2013055369A1
WO2013055369A1 PCT/US2011/056437 US2011056437W WO2013055369A1 WO 2013055369 A1 WO2013055369 A1 WO 2013055369A1 US 2011056437 W US2011056437 W US 2011056437W WO 2013055369 A1 WO2013055369 A1 WO 2013055369A1
Authority
WO
WIPO (PCT)
Prior art keywords
local
clients
collaboration
host
parameters
Prior art date
Application number
PCT/US2011/056437
Other languages
English (en)
Inventor
James R. Cole
Mark E. Gorzynski
Michael D. Derocher
Original Assignee
Hewlett-Packard Development Company, L.P.
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 Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2011/056437 priority Critical patent/WO2013055369A1/fr
Publication of WO2013055369A1 publication Critical patent/WO2013055369A1/fr

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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
    • H04L12/1827—Network arrangements for conference optimisation or adaptation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/01—Social networking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems

Definitions

  • Figure 1 is a schematic illustration of an example collaboration system.
  • Figure 2 is a flow diagram of an example collaboration method for use by the system of Figure 1.
  • Figure 3 is a schematic illustration of a first example of the collaboration system of Figure 1.
  • Figure 4 is a schematic illustration of a second example of the collaboration system of Figure 1.
  • Figure 5 is a schematic illustration of a third example of the collaboration system of Figure 1.
  • Figure 6 is a fragmentary side elevational view of an example local environment of the collaboration system of Figure 5.
  • FIG. 1 schematically illustrates one example of an electronic collaboration system 20.
  • Electronic collaboration system 20 facilitates electronic collaboration, such as web conferencing and video conferencing, with reduced latency and reduced data loss.
  • Electronic collaboration system 20 comprises local environments 22, 24 and a meeting host or meeting host module 25. Although two local environments are shown, in other examples, system 20 may comprise additional local environments having different numbers and forms of local clients.
  • Local environments 22, 24 each comprise a grouping of those local clients 26 which are interconnected by a same local network node 28 and which have electronic collaborations amongst one another coordinated by the same local host or local host server module 30.
  • Local clients 26 comprise electronic devices used by different collaboration or conference participants to participate in an electronic collaboration.
  • Figure 1 illustrates three example local clients: laptops 26A, 26D, electronic tablets 26B, 26E and personal data assistants 26C, 26F.
  • Other examples of local clients include, but are not limited to, net book computing devices, smart phones, basic phones, input/output devices such as microphones or cameras, and other electronic devices capable of communicating as part of a collaboration.
  • Each local network node 28 comprises an electronic device which defines a local network 34.
  • Examples of a network node 28 include, but are not limited to, a network switch, a network gateway, a router, a wireless access point (WAP) or some hybrid combination thereof.
  • Local clients 26 on the local network 34 are
  • network links 36 each of which may be a wired (e.g., Ethernet) connection, a wireless connection (e.g., based on the IEEE 802.1 1 standard, or some combination or wired and wireless connection.
  • Each network node 28 serves as an interface between local clients 26 on local network 34 and provides communication with other networks external to local network 34.
  • each network node 28 and local network 34 corresponds to a local environment 22, 24.
  • local environments 22, 24 comprise dedicated videoconference studios or a conference rooms outfitted with videoconference equipment, wherein the associated network node 28 is located within or in close proximity to the dedicated studio or conference room.
  • network node 28 may provide network access to video conference equipment such as display devices, loudspeakers, or other video conferencing computer equipment.
  • each local environment 22, 24 may comprise a number of similarly situated or located rooms, wherein network node 28 is located within one room or in close proximity to one or more of such similarly located conference rooms.
  • local environments 22, 24 may correspond to one or more similarly located or situated cubicles or other areas designated, explicitly or implicitly, as being available for dedicated to a particular electronic collaboration objective.
  • Local host server 30 comprises a computing device server configured to follow instructions provided on a non-transient computer readable medium so as to coordinate and administer electronic collaborations directly between local clients 26 on the local network 34.
  • local host server 30 carries out authentication operations and local media sharing.
  • authorization is carried out by the local host server 30 requests that a new local client requesting to participate in a collaboration event provide or input one or more passwords or other identification values, wherein local host server compares the entered identification or authentication input to stored values to either allow or deny the new local client access to the collaboration event.
  • other authentication processes may be utilized.
  • local host server 30 carries out the sharing of collaboration resources or media between local clients 26 on local network 34. Examples of collaboration or media that may be shared between local clients by local host server 30 includes cursor movements or graphic changes, slides, documents, video, audio and the like.
  • local host server 30 comprises a computing device separate and distinct from local clients 26 but connected to each local client 26 on the local network 34 via network node 28 and links 36.
  • local host server 30 may alternatively be provided by one of local clients 26.
  • the local client 26 serves as the host, coordinating and administering the collaboration event across network node 28 and links 26. Because such authentication and media sharing amongst local clients 26 all occurs across local network 34, authentication and data or media sharing is faster (less latency) and more reliable (less data packet loss during
  • Meeting host 25 (also known as the conference host) comprises a computing device server configured to follow instructions provided on a non-transient computer readable medium so as to collect, generate and distribute or share collaboration event parameters for collaboration between local clients served by different local hosts or not served or associated with any local host.
  • Collaboration event parameters comprise protocols and settings that define and control the sharing of data or media between local clients in different local environments. Such parameters pertain to protocols and setting that impact interaction between local clients of different local environments. Examples of such collaboration event parameters comprise: presentation control, data transmission security, a collaboration event participant roster and, in the case of video conferencing, seating order.
  • Presentation control parameters comprise those protocols which identify which local client or clients in a collaboration event are designated as a main presenter or main presenters. Such parameters may also distribute other conference control functions amongst different local clients.
  • Data transmission security parameters comprise protocols pertaining to the different security levels across different local environments. For example, one local environment may have a first level of security protocols while another local environment may have a less secure, less stringent level of security protocols. One environment may be within a company network while another environment may be within a hotel or semi- public network. Such parameters may impact how or what collaboration data may be shared or transmitted across or between different local environments.
  • Collaboration participation roster parameters comprise a listing of some or all local clients participating in the conference or collaboration event. Such a roster may include parameters or information such as the particular local client's data transmission and receiving capabilities or requirements, the local client's security or access authorization and the like.
  • Seating order parameters comprise protocols specifically relating to video conferencing collaboration events. Such seating order parameters define the order in which visual depictions of the video conference participants are presented on the display of a particular local client.
  • a video conference is designed to simulate a conference with participants sitting around a table. The display of the participants on each local device or local client will vary due to different perspectives of the different local clients and their users or conference participants.
  • meeting host 25 distributes such collaboration parameters amongst all local clients 26. Meeting host 25 additionally updates changes to such collaboration parameters on each local client 26. As a result, each local client has direct access to the collaboration parameters to facilitate direct sharing with local clients in other environments without having to communicate through an intermediary.
  • meeting host 25 stores and maintains or updates the collaboration parameters in a memory 40.
  • Local clients 40 may access the stored collaboration parameters periodically or when media is to be shared. Using the obtained collaboration parameters, each local client 40 may directly communicate the information to be shared to other local clients.
  • Figure 1 further illustrates an example of media sharing during a collaboration event or conference.
  • system 20 operates in a federated manner with those local actions and transmissions being handled or administered by a local host 30 and with those actions or transmissions that are not local in nature, but pertaining to interactions between local clients across different environments, being handled or administered based upon the collaboration parameters collected or generated and shared by meeting host 25.
  • Figure 1 illustrates one example of the sharing or transmission of media (video, files etc.) by local client 26D of environment 24 to the other local clients 26 participating in the collaboration event.
  • media to be shared is distributed directly to other local clients in the same environment 24 across network node 28 and links 36 under the administration or control of local host 30.
  • media being shared with local clients outside environment 26, such as with local clients 26 in environment 22, is distributed directly through the local network node 28 using the collaboration parameters provided by meeting host 40.
  • the two network nodes 28 of the two local environments are equivalent and federated. As a result, latency times and accidental data packet losses may be reduced.
  • FIG. 2 is a flow diagram illustrating the overall federation scheme or method 100 employed by system 20 of Figure 1.
  • local host 30A administers collaboration amongst local clients 26A, 26B and 26C.
  • such local administration may comprise authenticating local clients 26A, 26B and 26C and transmitting shared media directly between local clients 26A, 26B and 26C.
  • local host 30B carries out substantially the same administrative functions such as authenticating local clients 26D, 26E and 26F and transmitting shared media directly between local clients 26D, 26E and 26F. Because such administration of data or media sharing is carried out at a local level by a local host 30, latency and data loss may be reduced.
  • meeting host 40 shares collaboration parameters amongst clients 26 not in the same local environment 22, 24.
  • collaboration parameters comprise protocols and settings that define and control the sharing of data or media between local clients in different local environments. Such parameters pertain to protocols and setting that impact interaction between local clients of different local environments.
  • collaboration event parameters comprise: presentation control, data transmission security, a collaboration event participant roster and, in the case of video conferencing, seating order. Because meeting host 40 shares such collaboration parameters, local clients 26 may more efficiently share collaboration media to clients in other environments since the media being shared does not need to be transmitted through a middleman, another central host.
  • meeting host 40 distributes and maintains the collaboration parameters in the memory of each local client 26.
  • meeting host 40 maintains the profile or collaborative parameters in a memory 40, wherein local clients 26 access the memory 40 to obtain such collaboration parameters.
  • meeting host 40 does both, allowing local clients not having memory or sufficient memory for storing such collaborative parameters to access the memory 40 to participate in a collaborative event while, at the same time, facilitating more efficient collaborative actions for those local clients that have sufficient memory to store such collaborative parameters.
  • FIG. 3 schematically illustrates collaboration system 220, one particular example of collaboration system 20.
  • Collaboration system 220 comprises local environments 222, 224 and meeting host 225.
  • Local environments 222 and 224 are similar to local environments 22 and 24, respectively, except that meeting host module 25 is illustrated as being provided by the same electronic device 227A that serves as the local host server and includes local host module 28.
  • Each of electronic devices 227A and 227B which serve as the local host server and which include a local host module 28 is further illustrated as including a memory 229 storing each of local parameters 231 and collaboration parameters 233.
  • electronic device 227 and electronic device 227B are each dedicated host devices with device 227B serving as a local host and device 227A serving as both the local host for environment 222 and the meeting host for environments 222 and 224, as well as any other environments not shown.
  • one or both of electronic devices 227A and 227B may additionally serve as a local client 26.
  • electronic device 227A and/or electronic device 227B may comprise a personal electronic device such as a laptop computer, personal data assistant (PDA), tablet, smart phone or the like which may be used by a collaboration event participant to partake in the collaboration event, while also serving as the local host (device 227B) or both the local host and the meeting host (device 227A).
  • PDA personal data assistant
  • collaboration parameters 233 stored in memory 229 comprise protocols and settings that define and control the sharing of data or media between local clients in different local environments. Such parameters pertain to protocols and setting that impact interaction between local clients of different local environments. Examples of such collaboration event parameters comprise: presentation control, data transmission security, a collaboration event participant roster and, in the case of video conferencing, seating order.
  • Local parameters 231 comprise data, settings and protocols that impact or pertain to the transmission or sharing of collaboration data between local clients 26 within a local network 34 (shown in Figure 1). Local parameters 231 are those data, settings and protocols that the associated local host module 28 uses to administer local actions or operations such as authentication operations and local media sharing
  • local hosts 30 interact with local clients 26 in the associated local environment to carry out local operations in the local environment such as authentication and media sharing.
  • changes to the local parameters are stored in the local parameters section of memory 229.
  • local host modules 30 each communicate with meeting host module 26 to transmit data that may impact collaboration parameters 233.
  • meeting host module maintains the collaboration parameters 233 stored in each memory 239. For example, when a new local client logs in and is authenticated by local host module 30, local host module 30 transmits this event to meeting host module 26.
  • Meeting host module 30 then updates the collaboration parameters 233 to add the new local client to the roster and to insert the new local client in the seating order (in the case of videoconferencing).
  • the local host 30 of the source of the media uses local parameters to share such media amongst local clients 26 in the same local environment.
  • each local host 30 consults the current collaboration parameters 233 and transmits the media directly to the other local clients using the collaboration parameters.
  • local client 26A may have presentation control and implement movement of a cursor.
  • the change is transmitted to local clients 26B and 26C, the local clients 26 in the same local environment 222 by local host module 30 according to the local parameters 231.
  • the local host module 30 further consults collaboration parameters 233 to identify all local clients 26 of other local environments, clients 26D, 26E and 26F in this example, and then transmits the cursor movement directly to such clients. The same process occurs when other sharing of media occurs.
  • local client 26A may have presentation control and implement movement of a cursor.
  • the change is presented on a local display (a display screen or central monitor viewed by all collaboration participants in the same local environment) by local host module 30 according to the local parameters 231 to achieve low latency.
  • the local host module 30 further consults collaboration parameters 233 to identify all local clients 26 of other local environments, clients 26D, 26E and 26F in this example, and then transmits the cursor movement directly to such clients.
  • FIG 4 schematically illustrates collaboration system 320, another example of collaboration system 20 shown in Figure 1.
  • Collaboration system 320 is similar to collaboration system 220 except that meeting host 25 is provided by a separate and distinct electronic device 327 rather than being provided as part of the same electronic device that also provides a local host 30.
  • meeting host 25 has a memory 331 storing collaboration parameters 333.
  • collaboration system 320 operates in much the same fashion as collaboration system 220.
  • meeting host 25 additionally stores and maintains or updates the same set of collaboration parameters 333 in memory 331.
  • additional clients not associated with a particular local host 30 may partake in a collaboration event by communicating directly with meeting host 25.
  • meeting host 25 may carry out authentication for such clients not associated with a local host 30.
  • the client may directly utilize collaboration parameters 333 stored at meeting host 25.
  • FIG. 5 illustrates collaboration system 400, another example of collaboration system 20.
  • collaboration system 400 comprises local environment 422, meeting host 425 and isolated local clients 428, 429.
  • Local environment 422 comprises local clients 426A, 426B, 426C, 426D, 426E, display device 427, local host 430 and associated memory 431.
  • Figure 6 illustrates local environment 422 in greater detail.
  • local client 426A comprises a laptop or netbook computing device used by first collaboration participant and presentation controller 435A.
  • local client 426A connects to the local network 434 and local host 430 (shown in Figure 5) in a wired fashion, connecting to network jack 441.
  • local client 426A may connect to local network 434 and local host 430 (shown in Figure 5) in a wireless fashion.
  • Local client 426B comprises an interactive display device, such as a touch screen, used by the collaboration participant 435B and incorporated into a collaboration table 437.
  • Local clients 426C, 426D and 426E each comprise a camera 439 and a display 441.
  • Camera 439 captures video of participants as well as any articles or objects to be visually shared.
  • Display 431 visually presents other participants in the collaboration event and/or object articles presented before other cameras 439.
  • display 431 visibly presents images of different collaboration participants 435 according to a seating order which is provided as part of collaboration parameters maintained by meeting host 425 (shown in Figure 5).
  • the participants and their arrangement that are visually displayed by other display devices in other local environments or on displays of other local clients may be different due to different seat perspectives.
  • Display device 427 comprises a public device to visibly present data and graphics or video shared by all participants 435 in the collaboration event.
  • display device 427 is shown as presenting a shared collaboration resource 443 shared by local client 426A.
  • the shared collaboration resource 443 includes a graph 445, topic list 447, list of collaboration locations or environments rural 449 and a current list of participants 451.
  • local host 430 comprises a computing device server configured to follow instructions provided on a non-transient computer readable medium so as to coordinate and administer electronic collaborations directly between local clients 426 on the local network 434.
  • local host server 430 carries out
  • local host server 430 carries out authentication of the new local client.
  • local client 426 requests that the new local client provide or input one or more passwords or other identification values, wherein local host server compares the entered identification or authentication input to stored values to either allow or deny the new local client access to the collaboration event.
  • other authentication processes may be utilized.
  • local host server 430 carries out the sharing of collaboration resources or media between local clients 426 on local network 434.
  • local host server 430 comprises a computing device separate and distinct from local clients 426 but connected to each on the local network 434.
  • local host server 430 may alternatively be provided by one of local clients 426.
  • the local client 426 serves as the host, coordinating and administering the collaboration event 426. Because such authentication and media sharing amongst local clients 426 all occurs locally, authentication and data or media sharing is faster (less latency) and more reliable (less data packet loss during
  • Meeting or conference host 425 comprises a computing device server configured to follow instructions provided on a non-transient computer readable medium so as to collect, generate and distribute or share collaboration event parameters for collaboration between local clients served by different local hosts or not served or associated with any local host.
  • Meeting host 425 maintains the profile or collaborative parameters in a memory 440 (memory cache), wherein local clients 426 access the memory 440 to obtain such collaboration parameters which are stored in memory 431. Because meeting host 440 stores collaboration parameters in memory 446, clients 428 and 429 which are not serviced by a local host may still participate in a collaborative event using collaboration parameters of meeting host 425.
  • local host 430 interacts with local clients 426 in local environment 400 to carry out local operations in the local environment such as authentication and media sharing. Changes to the local parameters are stored in the local parameters section of memory 431.
  • Local host module 430 communicates with meeting host module 425 to transmit data that may impact collaboration parameters.
  • Meeting host module maintains the collaboration parameters stored in each memory 431 and memory 440. For example, when a new local client 426 logs in and is authenticated by local host module 430, local host module 430 transmits this event to meeting host module 425.
  • Meeting host module 430 then updates the collaboration parameters to add the new local client to the roster and to insert the new local client in the seating order (in the case of videoconferencing).
  • the local host 430 of the source of the media uses local parameters to share such media amongst local clients 426 in the same local environment.
  • the local client which is the origin of the media to be shared consults the current collaboration parameters and transmits the media directly to the other local clients using the collaboration parameters.
  • the shared media is transmitted directly to each client.
  • media originating from a local client is shared with other clients 426 at the same local environment 400 as well as other clients, 428, 429 at other local environments.
  • local client 426A may have presentation control and implement movement of a cursor.
  • the change is transmitted to local clients 426B, the local client 426 in the same local environment 422 by local host module 430 according to the local parameters.
  • the local host module 430 further consults collaboration parameters to identify all clients participating in the collaboration event, clients 428 and 429 in this example, and then transmits the cursor movement directly to such clients were 28, 429.
  • local client 426A may have presentation control and implement movement of a cursor.
  • the change is presented on a local display (a display screen or central monitor viewed by all collaboration participants in the same local environment) by local host module 30 according to the local parameters to achieve low latency.
  • the local host module 430 further consults collaboration parameters to identify all local clients 426 of other local environments, clients 428, 429 in this example, and then transmits the cursor movement directly to such clients.
  • media originating from a local client may not be transmitted to other local clients and the same local environment, but may be transmitted to clients in other environments.
  • each of cameras 439 of each of local clients 426C, 426D and 426E continuously capture video of their associated participants 435.
  • the depiction of participants 435 on displays may continuously change.
  • the changes are transmitted to local host 430 which consult memory 431 to identify other clients outside of environment 400 which are partaking in the collaboration event.
  • the collaboration parameters would indicate that clients 428, 429 are also participating in the collaboration event.
  • local host 430 uses the seating order in the collaboration parameters, local host 430 transmits the video or images from cameras 439 to remote clients, such as clients 428, 429. Because the video is transmitted directly to remote clients 428, 429, transmission latencies and data loss may be reduced.
  • each of systems 20, 220, 320, and 420 form a collaboration event or conference that is defined by user interaction and media flow that exists in a distributed realization. Because such systems establish a hierarchy of federated systems, media transmission between distant and remote sites may be achieved using techniques, such as alternate encoding algorithms, not reasonable for personal devices and grabs not even room-scale systems. Because such systems utilize local authentication and private or direct client-to-client or site-to-site communications to create a collaboration overlay on top of an existing, typically private, network, established tunneling techniques may be used to traverse such isolation. As a result, clients that are not authorized to access the private network may still access the collaboration functions that exist on the network.
  • conference hosting functions are separated into multiple federated entities, instead of a single instance, individual hosting functions may be located in both public spaces and network-based deployments.
  • the layered deployment provides universal accessibility for mobile clients while providing minimal latency required for localized public space or local environments.
  • each local conference host such as host 430, serves as a node for content distribution overlay, local environments experience immediate data visibility speeds as the data becomes available.
  • Limited upload systems may securely stream content to the dissolution system to make it more available while maintaining control over content visibility.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Tourism & Hospitality (AREA)
  • General Physics & Mathematics (AREA)
  • Human Resources & Organizations (AREA)
  • Marketing (AREA)
  • Primary Health Care (AREA)
  • Strategic Management (AREA)
  • Economics (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computing Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

Des collaborations peuvent être gérées parmi des premiers clients (26, 426, 428, 429) et des seconds clients (26, 426, 428, 429) au moyen respectivement de premiers et de seconds serveurs hôtes (30, 430), tout en partageant des paramètres de collaboration pour des collaborations entre les premiers clients (26, 426, 428, 429) et les seconds clients (26, 426, 428, 429).
PCT/US2011/056437 2011-10-14 2011-10-14 Collaboration électronique WO2013055369A1 (fr)

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PCT/US2011/056437 WO2013055369A1 (fr) 2011-10-14 2011-10-14 Collaboration électronique

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Application Number Priority Date Filing Date Title
PCT/US2011/056437 WO2013055369A1 (fr) 2011-10-14 2011-10-14 Collaboration électronique

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040158586A1 (en) * 2003-02-10 2004-08-12 Mingtar Tsai Method and system of using shared file for data collaboration
US20040263636A1 (en) * 2003-06-26 2004-12-30 Microsoft Corporation System and method for distributed meetings
US20100251140A1 (en) * 2009-03-31 2010-09-30 Voispot, Llc Virtual meeting place system and method
US20110025819A1 (en) * 2008-06-30 2011-02-03 Gorzynski Mark E Compositing Video Streams

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040158586A1 (en) * 2003-02-10 2004-08-12 Mingtar Tsai Method and system of using shared file for data collaboration
US20040263636A1 (en) * 2003-06-26 2004-12-30 Microsoft Corporation System and method for distributed meetings
US20110025819A1 (en) * 2008-06-30 2011-02-03 Gorzynski Mark E Compositing Video Streams
US20100251140A1 (en) * 2009-03-31 2010-09-30 Voispot, Llc Virtual meeting place system and method

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