# US 9,438,643 B2 · Multi-device conference participation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,438,643 B2 - Document ID: US9438643B2 - Status: Granted - Kind: B2 - Application number: 14/597,241 - Filed: 2015-01-15 - Published: 2016-07-21 - Granted: 2016-09-06 - Earliest claimed: 2015-01-15 - Assignees: Cisco Technology, Inc. - Applicants: Cisco Technology, Inc. - Inventors: Dong Zhang; Ling Zhang; Guang Xu; Yongze Xu; Zhiliang Wang - Web page: https://patentgrep.com/patent/US9438643B2 ## CPC - H04L 65/1089: by adding media; by removing media - H04L 65/1094: Inter-user-equipment sessions transfer or sharing - H04L 65/4015: {where at least one of the additional parallel sessions is real time or time sensitive, e.g. white board sharing, collaboration or spawning of a subconference} - H04L 65/403: Arrangements for multi-party communication, e.g. for conferences (data switching systems for conference H04L12/18; arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities H04M3/56; television conferencing systems H04N7/15) - H04N 7/147: {Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals (selecting H04Q)} - H04N 7/15: Conference systems - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract In one embodiment a method includes connecting a primary video conference client device (PVCCD) to a video conference session; allocating: at least a first presentation segment of the video conference session to be presented by the PVCCD, and also allocating at least a second presentation segment of the video conference session to be presented by at least one secondary video conference client device (SVCCD), receiving a data stream associated with at least the first presentation segment, and presenting the first presentation segment on the PVCCD. ## Claims ### Claim 1 A method comprising: connecting a primary video conference client device (PVCCD) to a video conference session; allocating: at least a first presentation segment of said video conference session to be presented by said PVCCD, and at least a second presentation segment of said video conference session to be presented by at least one secondary video conference client device (SVCCD); enabling user selection of at least one SVCCD from among available video conference client devices; receiving a data stream associated with at least said first presentation segment; and presenting said first presentation segment on said PVCCD. ### Claim 2 (depends on 1) The method according to claim 1 wherein at least one of said presentation segments is a visual display from said video conference session. ### Claim 3 (depends on 1) The method according to claim 1 wherein at least one of said presentation segments is audio from said video conference session. ### Claim 4 (depends on 1) The method according to claim 1 and wherein said receiving comprises: receiving said data stream, wherein said data stream is also associated with said second presentation segment; and forwarding a portion of said received data stream to said SVCCD, wherein said forwarded portion is associated with said second presentation segment. ### Claim 5 (depends on 1) The method according to claim 1 wherein at least a portion of said first presentation segment and a portion of said second presentation segment are associated with a same visual display to be presented in different resolutions. ### Claim 6 (depends on 1) The method according to claim 1 and also comprising: forwarding details of at least said second presentation segment to a video conference server associated with said video conference session, wherein said received data stream is not associated with said second presentation segment. ### Claim 7 (depends on 1) The method according to claim 1 wherein said allocating comprises: performing said allocating in accordance with allocations performed for previous video conference sessions. ### Claim 8 (depends on 1) The method according to claim 1 wherein said allocating comprises: performing said allocating in accordance with previously entered user preferences. ### Claim 9 (depends on 1) The method according to claim 1 wherein said allocating comprises: designating another video conference client device as said PVCCD; and redesignating previous said PVCCD as said SVCCD. ### Claim 10 (depends on 1) The method according to claim 1 and also comprising: adding an available video conference client device as said SVCCD. ### Claim 11 (depends on 1) The method according to claim 1 and also comprising: removing at least one said SVCCD from said video conference session; and performing said allocating without said removed SVCCD. ### Claim 12 A method comprising: connecting a video conference client device to a video conference session; designating said connected video conference client device as a secondary video conference client device (SVCCD) in accordance with a selection of said video conference client device as said SVCCD on an associated primary video conference client device (PVCCD); receiving a presentation segment allocation from said PVCCD wherein said presentation segment allocation indicates at least a presentation segment of said video conference session to be presented on said SVCCD; receiving a data stream comprising at least said presentation segment; and presenting said presentation segment on said SVCCD. ### Claim 13 (depends on 12) The method according to claim 12 wherein said presentation segment is a visual display from said video conference session. ### Claim 14 (depends on 12) The method according to claim 12 wherein said presentation segment is audio from said video conference session. ### Claim 15 (depends on 12) The method according to claim 12 wherein said receiving said data stream comprises: receiving said data stream from said PVCCD. ### Claim 16 (depends on 12) The method according to claim 12 wherein said receiving said data stream comprises: receiving said data stream from a video conference server, wherein said video conference server is associated with said video conference session. ### Claim 17 (depends on 12) The method according to claim 12 wherein said data thread also comprises presentation data not allocated for presentation on said SVCCD. ### Claim 18 (depends on 12) The method according to claim 12 and also comprising: receiving a handover request initiated on said PVCCD; and redesignating said SVCCD as said PVCCD. ### Claim 19 A primary video conference device (PVCCD) comprising: an input/output module operative to send and receive data associated with a video conference session; a display screen operative to at least display a presentation of said data; a processor; and a video conference application to be executed by said processor and configured to: connect said PVCCD to said video conference session; allocate: at least a first presentation segment of said video conference session to be presented on said display screen, and at least a second presentation segment of said video conference session to be presented by at least one secondary video conference client device (SVCCD); enable user selection of at least one SVCCD from among available video conference client devices; receive via said I/O module a data stream associated with at least said first presentation segment; and present said first presentation segment on said display screen.