Lifesize Communications, Inc.

Logitech Europe S.a.

Lifesize, Inc.

Hrishikesh G Kulkarni

Sandeep Lakshmipathy

Raghuram Belur

Binu Kaiparambil Shanmukhadas

Hitesh Chouhan

Prithvi Ranganath

Vikas

Ashish Goyal

Gautam Khot

Sudeep U Nayak

Keith C King

Vivek Wamorkar

Sampath Kumar Srinivas

Shantha Kumari Harohalli Sathyanarayana Rao

A videoconference may be initiated between a plurality of endpoints. At least one of the endpoints may be coupled to a recording server, which may be configured to record the videoconference. A configuration may be selected (e.g., automatically or manually) for performing the recording. The endpoint (e.g., acting as an MCU) may transmit information to endpoints and may transmit recording information to the recording server. The recording information may be different from the videoconference information. For example, it may be in a 'streaming friendly' format, at a different bit rate, encoded differently, have different inputs, etc. The manner in which the videoconference is stored and/or recorded may be based on the selected configuration. Clients may be configured to receive and display the videoconference from the recording server and may be configured to change the provided layout to different layouts, e.g., based on user input.

Distributed recording or streaming of a videoconference in multiple formats

A federated media server system. The federated media server system may include a plurality of media servers. A first media server may be coupled to a second media server over a network. The first media server may also be coupled to a third media server over the network. Additionally, the second and third media servers may be coupled to a plurality of respective clients. The first media server may be configured to record video, e.g., videoconferences, and stream recordings to clients and/or the second and third media servers. The second and third media servers may assist in performing video recording, transcoding, storage of recordings, multicasting, etc.

Distributed transcoding of a video based on insufficient computing resources

Distributed recording of a video based on available disk space

Multicasting a video to a plurality of clients based on a single stream

Streaming a videoconference using distributed transcoding

Distributed recording of a videoconference in multiple formats

Selective audio combination for a conference. The conference may be initiated between a plurality of participants at respective participant locations. The conference may be performed using a plurality of conferencing endpoints at each of the participant locations. Audio may be received from each of the plurality of conferencing endpoints. Audio level information may also be received from each of the plurality of conferencing endpoints. The audio may be combined from a plural subset of the plurality of conferencing endpoints to produce conference audio. The plural subset is less than all of the plurality of conferencing endpoints. The audio may be combined based on the audio level information. The conference audio may be provided to the plurality of conferencing endpoints.

Selective audio combination for a conference

Collaborative recording of a videoconference using a recording server

Conducting a private videoconference within a videoconference. A videoconference may be established between a plurality of endpoints. Input may be received requesting the private videoconference for a plural subset of the plurality of endpoints. The private videoconference may be established between the plural subset of the plurality of endpoints. The initial videoconference may continue during the private videoconference. Private videoconference data may be transmitted only to the plural subset of endpoints of the private videoconference. The private videoconference may be sent directly between the plural subset of endpoints or may be sent via a multipoint control unit, e.g., of the initial videoconference. The private videoconference data may not be sent to the remaining endpoints of the initial videoconference.

Conducting a direct private videoconference within a videoconference

Conducting a private videoconference within a videoconference via an MCU

Performing a videoconference. The videoconference may be established at a first videoconferencing location between at least three videoconferencing locations. The locations may include the first location, a second location, and a third location. The first location may maintain a plurality of videoconferencing units and the second and third locations may each maintain a single videoconferencing unit. A first videoconferencing unit of the first location acts as a multipoint control unit (MCU) of the videoconference. The MCU may receive respective videoconferencing information from each videoconferencing unit of the videoconference. The MCU may provide active videoconferencing information of an active participant to ones of the videoconferencing units at the second and third locations corresponding to non-active participants. The MCU may provide second and third videoconference information from the videoconferencing units of the second and third locations for presentation at the first location. This provision may be performed independently of the active participant.

Telepresence between a multi-unit location and a plurality of single unit locations

System and method for performing a videoconference. The videoconference may be established between at least three videoconferencing locations. Each videoconferencing location may include respective pluralities of displays, video inputs, and videoconferencing units. A first videoconferencing unit at a first videoconferencing location may receive an indication that there is an active talker at the first videoconferencing location. An indication that there is an active talker at the first videoconferencing location may also be provided to a second videoconferencing unit at the first videoconferencing location. The first and second videoconferencing units may provide signals to corresponding videoconferencing units at second and third videoconferencing locations indicating that videoconferencing signals from the first videoconferencing location should be displayed. The second and third videoconferencing locations may switch to display videoconferencing signals from the first videoconferencing location based on the signals which indicate that videoconferencing signals from the first videoconferencing location should be displayed.

Multiway telepresence without a hardware MCU

Sharing computer video in a videoconference. The method may include acquiring video on a computer. The method may also include coding the acquired video on the computer. Transmitting the coded video from the computer to a videoconferencing unit may also be included in the method. Also, the method may include packaging the transmitted video coded on the videoconferencing unit. Furthermore, the method may include transmitting the packaged video to a videoconferencing destination.

Videoconferencing using a precoded bitstream

In some embodiments, a videoconferencing endpoint may be an MCU (Multipoint Control Unit) or may include embedded MCU functionality. In various embodiments, the endpoint may thus conduct a videoconference by receiving/compositing video and audio from multiple videoconference endpoints. The endpoint may select a subset of endpoints and form a composite video image from the subset of the videoconference endpoints to send to the other videoconference endpoints. In some embodiments, the subset of endpoints that are selected for compositing into the composite video image may be selected according to criteria such as the last N talking participants. In some embodiments, the master endpoint may request the non-talker endpoints to stop sending video to help conserve the resources on the master endpoint. In some embodiments, the master endpoint may ignore video from endpoints that are not being displayed.

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Bengaluru, India

Hrishikesh G Kulkarni