Vidyo, Inc.

Columbia University

At+t Corp.

Other

At&t Intellectual Property I, L.p.

Lucent Technologies Inc.

Layered Media

Alexandros Eleftheriadis

Ofer Shapiro

Danny Hong

Hari Kalva

Thomas Wiegand

Reha Civanlar

Atul Puri

Robert Lewis Schmidt

Roi Sasson

Jacob Chakareski

Andrea Basso

Jonathan Michael Lennox

Stephen Cipolli

Manoj K Saxena

Hari Kalya

Ran Sharon

Mehmet Reha Civanlar

Yihan Fang

James P Adragna

Shree Kumar Nayar

Arnaud Eric Jacquin

Dimitris Anastassiou

Amir Shaked

Mehaet Reha Civanlar

Jae-Boom Lee

Shif-Fu Chang

Ofer Sharpiro

Jonathan Lennox

Systems and methods for performing videoconferencing using split endpoints are disclosed herein. These endpoints can include a Main Unit and a Satellite Unit that are associated with each other, and where the tasks of video and audio encoding and decoding are separated between the two. In some embodiments the Main Unit performs video and audio encoding, and the Satellite Unit performs video and audio decoding. In some embodiments the Satellite Unit obtains media data through its associated Main Unit, whereas in other embodiments the Satellite Unit obtains media data directly from the Server.

Systems and methods for split echo cancellation

A method and related apparatus for initiating videoconferences in instant messaging systems is described, including using an agent to represent the videoconferencing system into the instant messaging system and enabling control using hyperlinked information posted by the agent into the instant messaging message area.

System and method for agent-based integration of instant messaging and video communication systems

Scalable video codecs are provided for use in videoconferencing systems and applications hosted on heterogeneous endpoints/receivers and network environments. The scalable video codecs provide a coded representation of a source video signal at multiple temporal, quality, and spatial resolutions.

System and method for scalable and low-delay videoconferencing using scalable video coding

Systems and methods for the pairing of room systems, and other systems that lack portability and a convenient user interface, to videoconferences are disclosed herein. In one embodiment of the disclosed subject matter, a user initiates room system pairing from his or her device. For example, the user can press a button on a remote control associated with the room system to set the system to pairing mode. The room system can register with a server that is controlling the videoconferencing system, which in turn can display the room system in a list of available room systems on the user's device. The user can have the option to select the particular room system, instructing the server to add the room system to the conference.

Systems and methods for room system pairing in video conferencing

Systems and methods for conducting a multi-endpoint video signal conference are provided. Conferencing endpoints are linked by pairs of a reliable and a less reliable communication channel. Conference video signals are scaleable coded in base layer and enhancement layers format. Video signal base layers, which correspond to a minimum picture quality, are communicated over reliable channels. The video signal enhancements layers may be communicated over the less reliable channels. A conference server mediates the switching of video layer information from transmitting endpoints to receiving endpoints without any intermediate coding or re-coding operations. The video conference can be integrated with an audio conference using either scalable coded audio signals or non-scaleable coded audio signals.

System and method for a conference server architecture for low delay and distributed conferencing applications

Systems and methods for error resilient transmission, rate control, and random access in video communication systems that use sealable video coding are provided. Error resilience is obtained by using information from low resolution layers to conceal or compensate loss of high resolution layer information. The same mechanism is used for rate control by selectively eliminating high resolution layer information from transmitted signals, which elimination can be compensated at the receiver using information from low resolution layers. Further, random access or switching between low and high resolutions is also achieved by using information from low resolution layers to compensate for high resolution spatial layer packets that may have not been received prior to the switching time.

System and method for providing error resilience, random access and rate control in scalable video communications

Systems and methods for performing videoconferencing using split endpoints are disclosed herein. These endpoints can include a Main Unit and a Satellite Unit that are associated with each other, and where the tasks of video and audio encoding and decoding are separated between the two. In some embodiment the Main Unit performs video and audio encoding, and the Satellite Unit performs video and audio decoding. In some embodiments the Satellite Unit obtains media date through its associated Main Unit, whereas in other embodiments the Satellite Unit obtains media data directly from the Server.

Systems and methods for using split endpoints in video communication systems

Systems and methods for interactively sharing and annotating visual information over a communication network between at least a first and a second endpoint are disclosed. The system includes a display coupled to the first endpoint and a user interaction device coupled to the first endpoint and associated with the display, wherein the first endpoint is configured to: receive visual information from, and transmit visual information to, at least the second endpoint over the communication network; show visual information received from at least the second endpoint on the display; obtain a copy of the visual information shown on the display when instructed by the user interaction device; add an annotation, if any, as indicated by the user interaction device; and transmit the annotated copy to the second endpoint.

Systems and methods for improved interactive content sharing in video communication systems

Systems and methods for error resilient transmission, rate control, and random access in video communication systems that use scalable video coding are provided. Error resilience is obtained by using information from low resolution layers to conceal or compensate loss of high resolution layer information. The same mechanism is used for rate control by selectively eliminating high resolution layer information from transmitted signals, which elimination can be compensated at the receiver using information from low resolution layers. Further, random access or switching between low and high resolutions is also achieved by using information from low resolution layers to compensate for high resolution spatial layer packets that may have not been received prior to the switching time.

Systems and methods for error resilient transmission and for random access in video communication systems are provided. The video communication systems are based on single-layer, scalable video, or simulcast video coding with temporal scalability, which may be used in video communication systems. A set of video frames or pictures in a video signal transmission is designated for reliable or guaranteed delivery to receivers using secure or high reliability links, or by retransmission techniques. The reliably-delivered video frames are used as reference pictures for resynchronization of receivers with the transmitted video signal after error incidence and for random access.

Systems and methods for error resilience and random access in video communication systems

A system and method for transmitting a plurality of video signals scalably coded into layers including a base layer and one or more enhancement layers and associated audio signals, if any, over a communication network for presentation to one or more end users. A layout to display the plurality of video signals is determined based on a set of criteria and only the data of the video signal layers that are necessary for displaying the video signals in the determined layout, and any associated audio signals, is selectively transmitted over the communication network.

System and method for improved view layout management in scalable video and audio communication systems

As information to be processed at an object-based video or audio-visual (AV) terminal, an object-oriented bitstream includes objects, composition information, and scene demarcation information. Such bitstream structure allows on-line editing, e.g. cut and paste, insertion/deletion, grouping, and special effects. In the interest of ease of editing, AV objects and their composition information are transmitted or accessed on separate logical channels (LCs). Objects which have a lifetime in the decoder beyond their initial presentation time are cached for reuse until a selected expiration time. The system includes a de-multiplexer, a controller which controls the operation of the AV terminal, input buffers, AV objects decoders, buffers for decoded data, a composer, a display, and an object cache.

Growing community of inventors

Tenafly, NJ, United States of America

Alexandros Eleftheriadis