US20080316295A1 - Virtual decoders - Google Patents

Virtual decoders Download PDF

Info

Publication number
US20080316295A1
US20080316295A1 US12142263 US14226308A US2008316295A1 US 20080316295 A1 US20080316295 A1 US 20080316295A1 US 12142263 US12142263 US 12142263 US 14226308 A US14226308 A US 14226308A US 2008316295 A1 US2008316295 A1 US 2008316295A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
video
video images
images
image
coordinate 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.)
Abandoned
Application number
US12142263
Inventor
Keith C. King
Wayne E. Mock
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.)
Lifesize Inc
Original Assignee
LifeSize Communications Inc
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

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/15Conference systems
    • H04N7/152Multipoint control units therefor

Abstract

In various embodiments, a Multipoint Control Unit (MCU) or another video conferencing device (e.g., an endpoint) may generate a video frame that includes video images of two or more video conferencing endpoints. The video frame may then be sent to another video conferencing device that may receive the video frame and separate the two or more video images into separate video images. In some embodiments, the video frame may be separated into its separate images using, for example, metadata sent along with the video frame. The metadata may include video image identifiers and location information (e.g., coordinates in the video frame) of the video images. In some embodiments, the separated video images may be provided to a compositor that may composite the separated video images, for example, into a new layout.

Description

    PRIORITY
  • This application claims the benefit of priority of U.S. Provisional Patent Application Ser. No. 60/945,723 titled “Virtual Decoders”, filed on Jun. 22, 2007, whose inventors are Keith C. King and Wayne E. Mock, which is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • This application also claims the benefit of priority of U.S. Provisional Patent Application Ser. No. 60/945,734 titled “Videoconferencing Device which Performs Multi-way Conferencing”, filed on Jun. 22, 2007, whose inventors are Keith C. King and Wayne E. Mock, which is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • This application also claims the benefit of priority of U.S. Provisional Patent Application titled “Virtual Multiway Scaler Compensation”, Ser. No. 60/949,674, which was filed Jul. 13, 2007, whose inventors are Keith C. King and Wayne E. Mock, which is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates generally to conferencing and, more specifically, to video conferencing.
  • 2. Description of the Related Art
  • Video conferencing may be used to allow two or more participants at remote locations to communicate using both video and audio. Each participant location may include a video conferencing endpoint for video/audio communication with other participants. Each video conferencing endpoint may include a camera and microphone to collect video and audio from a first or local participant to send to another (remote) participant. Each video conferencing endpoint may also include a display and speaker to reproduce video and audio received from a remote participant. Each video conferencing endpoint may also be coupled to a computer system to allow additional functionality into the video conference. For example, additional functionality may include data conferencing (including displaying and/or modifying a document for two or more participants during the conference).
  • Video conferencing involves transmitting video streams between video conferencing endpoints. The video streams transmitted between the video conferencing endpoints may include video frames. The video frames may include pixel macroblocks that may be used to construct video images for display in the video conferences. Video frame types may include intra-frames, forward predicted frames, and bi-directional predicted frames. These frame types may involve different types of encoding and decoding to construct video images for display. Currently, in a multi-way video conference call, a multipoint control unit (MCU) may composite video images received from different video conferencing endpoints onto video frames of a video stream that may be encoded and transmitted to the various video conferencing endpoints for display.
  • SUMMARY OF THE INVENTION
  • In various embodiments, an MCU or another video conferencing device (e.g., an endpoint) may generate a video frame that includes video images of two or more video conferencing endpoints. The MCU may also transmit coordinate information along with the video frame (e.g., as metadata). The metadata may include video image identifiers and location information (e.g., coordinates in the video frame) of the video images. The video frame may then be sent to a video conferencing endpoint that may receive the video frame and separate the two or more video images into separate video images. In some embodiments, the coordinate information sent along with the video frame may be used by the video conferencing endpoint to determine the locations of the video images in the video frame to facilitate separation of the video images.
  • In some embodiments, after the video conferencing endpoint separates out the video images, the separated video images may be provided to a compositor that may composite the separated video images into a new video image layout. Other video images (e.g., from local video or received from other video conferencing endpoints) may also be composited into the new video image layout. In some embodiments, the new video image layout may be configured to be displayed (e.g., as a continuous presence image). In some embodiments, participants at each video conferencing endpoint may use their local video conferencing endpoints to customize their continuous presence layout. For example, participants may rearrange the video images and/or replace one or more video images in the video image layout (e.g., with a current video image from their local video source).
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 illustrates a video conferencing endpoint network, according to an embodiment.
  • FIG. 2 illustrates a video conferencing endpoint, according to an embodiment.
  • FIG. 3 illustrates a flowchart of a method for compositing a video image layout at an MCU and forming a new layout at the endpoint, according to an embodiment.
  • FIGS. 4 a-d illustrates an MCU transmitting a video frame comprising multiple video images, according to an embodiment.
  • FIG. 5 a illustrates an overall view of the re-compositing process including a virtual decoder, according to an embodiment.
  • FIG. 5 b illustrates several embodiments of composite video images.
  • FIG. 6 illustrates a video image layout, according to an embodiment.
  • FIG. 7 illustrates separated video images from the video image layout, according to an embodiment.
  • FIG. 8 illustrates a new video layout using the separated video images, according to an embodiment.
  • FIG. 9 illustrates a coordinate system for a video frame, according to an embodiment.
  • FIG. 10 illustrates various video image layouts, according to various embodiments.
  • While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the drawings and detailed description thereto are not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention as defined by the appended claims. Note, the headings are for organizational purposes only and are not meant to be used to limit or interpret the description or claims. Furthermore, note that the word “may” is used throughout this application in a permissive sense (i.e., having the potential to, being able to), not a mandatory sense (i.e., must). The term “include”, and derivations thereof, mean “including, but not limited to”. The term “coupled” means “directly or indirectly connected”.
  • DETAILED DESCRIPTION OF THE EMBODIMENTS Incorporation by Reference
  • U.S. patent application titled “Speakerphone”, Ser. No. 11/251,084, which was filed Oct. 14, 2005, whose inventor is William V. Oxford is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • U.S. patent application titled “Videoconferencing System Transcoder”, Ser. No. 11/252,238, which was filed Oct. 17, 2005, whose inventors are Michael L. Kenoyer and Michael V. Jenkins, is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • U.S. patent application titled “Speakerphone Supporting Video and Audio Features”, Ser. No. 11/251,086, which was filed Oct. 14, 2005, whose inventors are Michael L. Kenoyer, Craig B. Malloy and Wayne E. Mock is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • U.S. patent application titled “Video Conferencing System which Allows Endpoints to Perform Continuous Presence Layout Selection”, Ser. No. ______, which was filed Jun. 19, 2008, whose inventors are Keith C. King and Wayne E. Mock, is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • U.S. patent application titled “Video Conferencing Device which Performs Multi-way Conferencing”, Ser. No. ______, which was filed Jun. 19, 2008, whose inventors are Keith C. King and Wayne E. Mock, is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • U.S. patent application titled “Video Decoder which Processes Multiple Video Streams”, Ser. No. ______, which was filed Jun. 19, 2008, whose inventors are Keith C. King and Wayne E. Mock, is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • U.S. patent application titled “Integrated Videoconferencing System”, Ser. No. 11/405,686, which was filed Apr. 17, 2006, whose inventors are Michael L. Kenoyer, Patrick D. Vanderwilt, Craig B. Malloy, William V. Oxford, Wayne E. Mock, Jonathan I. Kaplan, and Jesse A. Fourt is hereby incorporated by reference in its entirety as though fully and completely set forth herein.
  • FIG. 1 illustrates an embodiment of a video conferencing system network 100. FIG. 1 illustrates an exemplary embodiment of a video conferencing system network 100 which may include a network 101, endpoints 103 a-103 d (e.g., video conferencing systems), and a Multipoint Control Unit (MCU) 108. Although not shown in FIG. 1, the video conferencing system network 100 may also include other devices, such as gateways, a service provider, conference units, and plain old telephone system (POTS) telephones, among others. Endpoints 103 a-103 d may be coupled to network 101 via gateways (not shown). Gateways may each include firewall, network address translation (NAT), packet filter, and/or proxy mechanisms, among others.
  • The endpoints 103 a-103 d may include video conferencing system endpoints (also referred to as “participant locations”). Each endpoint 103 a-103 d may include a camera, display device, microphone, speakers, and a codec or other type of video conferencing hardware. In some embodiments, endpoints 103 a-103 d may include video and voice communications capabilities (e.g., video conferencing capabilities) and include or be coupled to various audio devices (e.g., microphones, audio input devices, speakers, audio output devices, telephones, speaker telephones, etc.) and include or be coupled to various video devices (e.g., monitors, projectors, displays, televisions, video output devices, video input devices, cameras, etc.). In some embodiments, endpoints 103 a-103 d may include various ports for coupling to one or more devices (e.g., audio devices, video devices, etc.) and/or to one or more networks. Endpoints 103 a-103 d may each include and/or implement one or more real time protocols, e.g., session initiation protocol (SIP), H.261, H.263, H.264, H.323, among others. In an embodiment, endpoints 103 a-103 d may implement H.264 encoding for high definition (HD) video streams.
  • In some embodiments, the MCU 108 may function as a Multipoint Control Unit to receive video from two or more sources (e.g., endpoints 103 a-d) and provide video (e.g., with composited video images) to two or more recipients (e.g., endpoints). “MCU” as used herein is intended to have the full breath of its ordinary meaning.
  • The network 101 may include a wide area network (WAN) such as the Internet. The network 101 may include a plurality of networks coupled together, e.g., one or more local area networks (LANs) coupled to the Internet. The network 101 may also include public switched telephone network (PSTN). The network 101 may also include an Integrated Services Digital Network (ISDN) that may include or implement H.320 capabilities. In various embodiments, video and audio conferencing may be implemented over various types of networked devices.
  • In some embodiments, endpoints 103 a-103 d and MCU 108 may each include various wireless or wired communication devices that implement various types of communication, such as wired Ethernet, wireless Ethernet (e.g., IEEE 802.11), IEEE 802.16, paging logic, RF (radio frequency) communication logic, a modem, a digital subscriber line (DSL) device, a cable (television) modem, an ISDN device, an ATM (asynchronous transfer mode) device, a satellite transceiver device, a parallel or serial port bus interface, and/or other type of communication device or method.
  • In various embodiments, the methods and/or systems described may be used to implement connectivity between or among two or more participant locations or endpoints, each having voice and/or video devices (e.g., endpoints 103 a-103 d and MCU 108, etc.) that communicate through network 101.
  • In some embodiments, the video conferencing system network 100 (e.g., endpoints 103 a-d and MCU 108) may be designed to operate with network infrastructures that support T1 capabilities or less, e.g., 1.5 mega-bits per second or less in one embodiment, and 2 mega-bits per second in other embodiments. In some embodiments, other capabilities may be supported (e.g., 6 mega-bits per second, over 10 mega-bits per second, etc). The video conferencing system may support HD capabilities. The term “high resolution” includes displays with resolution of 1280×720 pixels and higher. In one embodiment, high-definition resolution may include 1280×720 progressive scans at 60 frames per second, or 1920×1080 interlaced or 1920×1080 progressive. Thus, an embodiment of the present invention may include a video uconferencing system with HD “e.g. similar to HDTV” display capabilities using network infrastructures with bandwidths Ti capability or less. The term “high-definition” is intended to have the full breath of its ordinary meaning and includes “high resolution”.
  • FIG. 2 illustrates an exemplary embodiment of a video conferencing system endpoint 103 (e.g., 103 a), also referred to as an endpoint or participant location. The endpoint 103 may have a system codec box 209 to manage both a speakerphone 205/207 and the video conferencing devices. The speakerphones 205/207 and other video conferencing system components may be coupled to the codec box 209 and may receive audio and/or video data from the system codec box 209.
  • In some embodiments, the endpoint 103 may include a camera 204 (e.g., an HD camera) for acquiring video images of the participant location (e.g., of participant 214). Other cameras are also contemplated. The endpoint 103 may also include a display 201 (e.g., an HDTV display). Video images acquired by the camera 204 may be displayed locally on the display 201 and may also be encoded and transmitted to other video conferencing endpoints 103 in the video conference, e.g., through the MCU 108.
  • The endpoint 103 may also include a sound system 261. The sound system 261 may include multiple speakers including left speakers 271, center speaker 273, and right speakers 275. Other numbers of speakers and other speaker configurations may also be used. The endpoint 103 may also use one or more speakerphones 205/207 which may be daisy chained together.
  • In some embodiments, the video conferencing endpoint components (e.g., the camera 204, display 201, sound system 261, and speakerphones 205/207) may be coupled to the system codec (“compressor/decompressor”) box 209. The system codec box 209 may be placed on a desk or on a floor. Other placements are also contemplated. The system codec box 209 may receive audio and/or video data from a network (e.g., network 101). The system codec box 209 may send the audio to the speakerphone 205/207 and/or sound system 261 and the video to the display 201. The received video may be HD video that is displayed on the HD display. The system codec box 209 may also receive video data from the camera 204 and audio data from the speakerphones 205/207 and transmit the video and/or audio data over the network 101 to another conferencing system. The conferencing system may be controlled by a participant through the user input components (e.g., buttons) on the speakerphones 205/207 and/or remote control 250. Other system interfaces may also be used.
  • In various embodiments, the system codec box 209 may implement a real time transmission protocol. In some embodiments, a system codec box 209 may include any system and/or method for encoding and/or decoding (e.g., compressing and decompressing) data (e.g., audio and/or video data). In some embodiments, the system codec box 209 may not include one or more of the compressing/decompressing functions. In some embodiments, communication applications may use system codec box 209 to convert an analog signal to a digital signal for transmitting over various digital networks (e.g., network 101, PSTN, the Internet, etc.) and to convert a received digital signal to an analog signal. In various embodiments, codecs may be implemented in software, hardware, or a combination of both. Some codecs for computer video and/or audio may include MPEG, Indeo™, and Cinepak™, among others.
  • In some embodiments, the endpoint 103 may capture a local image of the local participants and provide a video stream to the MCU 108. The MCU 108 may also receive video streams from other endpoints 103. The MCU 108 may create a composite image of two or more of the received video streams and provide the composite image to each of the endpoints 103. The composite image, generated by the MCU 108, may have a certain layout. According to one embodiment, the MCU 108 may also generate coordinate information (or metadata) that describes the locations of the various images in the composite image. The endpoint 103 may use the coordinate information to separate the plurality of images from the composite image, and then generate a new composite image having a new layout, e.g., as specified by the user. The endpoint 103 may also use a virtual decoder technique in separating out the received composite image, as described below. In some embodiments, separating may include copying, replacing, and/or modifying data from the video images to be used to create a new composite image.
  • FIG. 3 illustrates a flowchart of a method for compositing a video image layout at an MCU 108 and forming a new layout at the endpoint 103, according to an embodiment. It should be noted that in various embodiments of the methods described below, one or more of the elements described may be performed concurrently, in a different order than shown, or may be omitted entirely. Other additional elements may also be performed as desired.
  • At 301, the MCU 108 may receive video images 555 from a plurality of endpoints 103. The endpoints 103 may be remote (e.g., endpoints 103 a, 103 b, and 103 c) or local (e.g., local endpoint 103 d including a local camera) and the video images 555 may include video (e.g., from camera 204) or presentations (e.g., from a Microsoft Powerpoint™ presentation). In some embodiments, the MCU 108 may use one or more decoders 409 (e.g., three decoders 409) to decode the received video images 555 from the respective endpoints 103. For example, video packets for the video frames with the respective received video images 555 may be assembled as they are received (e.g., over an Internet Protocol (IP) port) into the MCU 108. FIGS. 4 a-d illustrate embodiments of MCUs 108.
  • In some embodiments, the MCU 108 may also receive video image layout preferences from one or more of the endpoints 103. For example, endpoint 103 may receive a video image layout preference from one or more video conferencing participants 214 (e.g., through a menu on an on-screen interface) and may transmit that preference to the MCU 108. In some embodiments, a button on remote 250 may allow a video conference participant 214 to cycle through two or more available layout preferences. The video image layout preference may include a layout type (e.g., layout type 1001, 1003, 1005, 1007, 1009, or 1011 as seen in FIG. 10). Other layout types are also possible. The video image layout preference may specify which endpoint's video image to place in each of the available layout positions (e.g., which endpoint video image should be placed in the main layout position and which endpoint video images should be placed in the other layout positions). In some embodiments, the MCU 108 may not receive a video image layout preference from one or more endpoints 103. In some embodiments, the video image layout preference may be generated at the MCU 108. For example, software on the MCU 108 may determine which endpoint 103 has the current speaker/presenter and may place the corresponding video image in a main video image window of the layout (e.g., with other endpoint video images arranged around the main video image). Other layout selection methods are also contemplated.
  • In some embodiments, the MCU 108 may also be operable to receive other information from the endpoints 103. For example, an endpoint 103 may send data to the MCU 108 to move a far end camera (e.g., on another endpoint). The MCU 108 may subsequently transmit this information to the respective endpoint to move the far end camera.
  • At 303, the MCU 108 may generate a composite video image comprising two or more video images 555 (for example, from the endpoints 103 (such as video images 555 a, 555 b, 555 c, and 555 d)). In some embodiments, the MCU 108 may have one or more scalers 411 (e.g., four scalers) and compositors 413 to scale received video images 555 and composite two or more of the video images 555 from the endpoints 103 into, for example, a composite video image 505 (e.g. which may include one or more video images 555 in, for example, a continuous presence layout). Example composite video images 505 are illustrated in FIG. 5 b (e.g., composite video images 505 a, 505 b, 505 c, and 505 d).
  • In some embodiments, scalers 411 may be coupled to video decoders 409 (e.g., through crosspoint switch 499 shown in FIG. 4 c) that decode video images 555 from the various video sources (e.g., endpoints 103). The scalers 411 may scale the video images 555 after the video images 555 are decoded. In some embodiments, one or more of the video images 555 may not be scaled. For example, the two or more video images 555 may be rearranged into a composite video image 505 without being scaled. In some embodiments, the scalers 411 may be 7-15 tap scalers. The scalers 411 may use linear combinations (e.g., with similar or different coefficients) of a plurality of pixels in a video image 555 for each pixel scaled. Other scalers 411 are also contemplated. In some embodiments, the video images 555 may be stored in shared memory 495 after being scaled. In some embodiments, the scaler 411, compositor 421, compositor 413, and scalers 415 may be included on one or more FPGAs (Field-Programmable Gate Arrays). Other processor types and processor distributions are also contemplated. For example, FPGAs and/or other processors may be used for one or more other elements shown on FIG. 4 b.
  • In some embodiments, compositors 413 may access the video images 555 (e.g., from shared memory 495) to form composited video images. In some embodiments, the MCU 108 may composite the video images 555 into the respective video image layouts requested by the endpoints 103. For example, the MCU 108 may composite two or more of the received video images 555 into a continuous presence layout (e.g., see layout types 1001, 1003, 1005, 1007, 1009, or 1011 in FIG. 10). In some embodiments, the MCU 108 may form multiple composite video images according to respective received video image layout preferences.
  • In some embodiments, the output of the compositors 413 may again be scaled (e.g., by scalers 415 (such as scalers 415 a, 415 b, and 415 c)) prior to being encoded by video encoders 453. The video data received by scalers 415 may be scaled according to the resolution requirements of a respective endpoint 103. In some embodiments, the output of a compositor 413 may not be scaled prior to being encoded and transmitted to the endpoints 103. In some embodiments, the composite video image 505 may be transmitted as a video frame 507 through video stream 500 (see FIG. 5 a) to the respective endpoints 103.
  • In some embodiments, the MCU 108 may determine the coordinates of the video images 555 in the composite video image 505. For example, the coordinate information 519 may indicate the start/stop locations of one or more of the video images 555 in the video frame 507. This coordinate information 519 may be stored on the MCU 108.
  • At 305, the MCU 108 may transmit the composite video image 505 (which includes one or more video images 555) and the coordinate information 519 to each endpoint 103. For example, the MCU 108 may transmit a respective composite video image 505 (with the respective coordinate information 519 for the respective composite video image 505) to a respective endpoint 103 (e.g., according to the video image layout preference received from the respective endpoint 103). The MCU 108 may also transmit the coordinate information 519 to the endpoints 103. The coordinate information 519 sent to a respective endpoint 103 may be specific to the respective composite video image 505 sent to that endpoint 103. The coordinate information 519 may identify the locations of specific video images 555 in the received composite video image 505. In some embodiments, the coordinate information 519 may be transmitted as metadata 901 with the composite video image 505. The metadata 901 may include coordinate information 519 for a video frame 507 with the start (and/or stop) information for a video image 555 (e.g., video image boundaries and/or pixel start/stop points) corresponding to an endpoint 103. The metadata 901 may also include attributes of each of the plurality of endpoints 103 including identifying information respective to the corresponding endpoints 103 for each video image 555. Other information in the metadata 901 is also contemplated.
  • At 307, the endpoint 103 may receive the composite video image 505 and the coordinate information 519 (e.g., in metadata 901). For example, video frame 507 comprising two or more video images 555 may be received. The video frame 507 may be received as a series of video packets 503 in video stream 500 at decoder 515. The decoder 515 may assemble the video packets 503 into their respective video frames 507 for further processing in virtual decoder 517.
  • In some embodiments, the coordinate information 519 may include a size of an original composite video image. For example, after determining the coordinate information 519, the MCU 108 may need to subsequently scale the composite video image (e.g., scale down the composite video image to be sent over a reduced bandwidth network connection) to be sent to one or more endpoints 103. In some embodiments, the composite video image 505 may be scaled to a scaled composite video image in a scaler (e.g., scaler 415). The coordinate information 519 may be included in metadata 901 passed with a video frame 507 that includes the scaled composite video image. In some embodiments, the coordinate information 519 may be reformatted (e.g., at the MCU 108 or at the receiving endpoint 103) to reflect the new coordinates of one or more of the resized video images in the scaled composite video image. For example, when the endpoint 103 receives the scaled composite video image, the endpoint 103 may detect the actual size of the scaled composite video image and may determine the new coordinates of one or more of the video images 555 in the scaled composite video image using, for example, a ratio of the size of the original composite video image (which may be indicated in the coordinate information 519) to the size of the scaled composite video image detected by the endpoint 103. These new coordinates may then be used to separate one or more of the resized images in the scaled composite video image (see 309 below) to use in compositing a new composite video image (see 311 below). For example, see U.S. Provisional Patent Application titled “Virtual Multiway Scaler Compensation”, Ser. No. 60/949,674, which was filed Jul. 13, 2007, whose inventors are Keith C. King and Wayne E. Mock, which was incorporated by reference above.
  • At 309, the endpoint 103 may separate the video images 555 using the coordinate information 519. Virtual decoders 517 at one or more of the endpoints 103 may separate the composite video image 505 (e.g., a continuous presence layout) into two or more separate video images 559. In some embodiments, the coordinate information 519 may be used to find video image boundaries of the video images 555 within the video frame 507. In some embodiments, the coordinate information 519 may be used to determine where the respective video images 555 start and stop in the video frame 507. These start/stop locations may be used by the virtual decoder 517 to separate one or more video images 555 from the video frame 507. For example, the separate video images may be defined and/or scaled out of the composite video image 505. For example, the coordinate information 519 may be used by the virtual decoder 517 to crop the respective video images 555 (e.g., video images 555 a and 555 b) in the video frame 507. In some embodiments, separating the video images 555 may include, for example, storing the separated video images 559 in separate locations of a memory. In some embodiments, separating the video images 555 may include storing start and/or stop locations of the separated video images 559 in a memory. Other means for separating the video images 555 are also contemplated. For example, separating may include copying, replacing, and/or modifying data from the video images 555 of the composite video image 505 to be used to create a new composite image layout (see 311 below).
  • FIG. 9 illustrates an example of a use of coordinate information 519 to locate the boundaries of four video images (e.g., video images 555 a-d) in order to separate the video images 555. For example, the User 1 video image 555 a may have a left boundary at 0, a top boundary at 0, a right boundary at 639 (e.g., 639 pixels to the right of the left edge of the video frame 507), and a bottom boundary at 359. Similarly, the user 2 video image 555 b may have a left boundary at 640, a top boundary at 0, a right boundary at 1279, and a bottom boundary at 359. Coordinate information 519 (e.g., boundary information) for other video images (e.g., video images 555 c and 555 d) may also be provided e.g., in metadata 901. In some embodiments, coordinate information for a respective video image may be placed in a row of information for the respective video image. For example, row one of data in metadata 901 may include a call identifier, system name, number, Internet Protocol (IP) address, and left, top, right, bottom coordinates (e.g., 0, 0, 639, and 359) for a respective video image (other information may also be included).
  • While four video images 555 are shown with respect to video frame 507, it is noted that video frame 507 may include a composite video image 505 with other combinations and layouts of two or more video images 555. For example, as seen in FIG. 5 b, composite video image 505 b may include four video images 555 stacked on top of each other. In some embodiments, each video image of the stacked video images may be 1280 by 720 pixels (e.g., for a total size of 1280 by 2880) (other dimensions and number of video images are also contemplated). In some embodiments, composite video image 505 c may include four images side by side. As another example, the composite video image 505 d may include two video images (e.g., each 640 by 360 pixels) arranged side by side in a 1280 by 360 pixel video frame. The video frame 507 may then be separated into two 640 by 360 pixel video images. Other combinations and layouts are also contemplated. In some embodiments, the number of video images 555 composited in the composite video image 505 may depend on the number of participating endpoints 103 in the video conference. For example, each participating endpoint may have a corresponding video image (which may be, for example, 1280 by 720) in the composite video image 505.
  • FIG. 6 shows an example of a composite video image 600 with three video images 601, 603, and 605 originating from different endpoints 103. The composite video image 600 may include a main video image 601 of the endpoint with the current speaker/presenter and two or more side video images (e.g., side video images 603 and 605) of other endpoints participating in the video conference. Coordinate information 519 for coordinates 609, 611, and 613 may be sent with the video frame 507 and used by the virtual decoder 517 to separate the video images into separated video images 701, 703, and 705 (as seen in FIG. 7).
  • In some embodiments, the virtual decoder 517 may be implemented as a software abstraction on hardware such as an FPGA or other processor. In some embodiments, one or more virtual decoders 517 may be implemented on a single ASIC (Application Specific Integrated Chip). Other virtual decoder configurations are also contemplated. In some embodiments, a separate processor may implement the virtual decoder 517 by issuing commands to reprogram at least one FPGA to implement the virtual decoder 517. Other configurations are also contemplated.
  • At 311, the endpoint 103 may generate a new composite video image based, for example, on user preference. In some embodiments, one or more of the separated video images 559 may be provided to one or more scalers 513. The video images (including scaled video images, if any) may then be provided to one or more compositors 515. One or more compositors 515 may composite the video images into a new video image layout 559 (e.g., requested by a local participant 214 through their local endpoint 103 d). In some embodiments, a local participant may cycle through the layout offerings from the endpoint 103 (e.g., by clicking an icon to cycle to the next available layout). In some embodiments, the scalers 513 and compositors 515 may be implemented in hardware or software. In some embodiments, icon scalers may be used (e.g., if all of the endpoint's other scalers are being used).
  • As an example, if the main video image 701 and each of the two side video images 703 and 705 are to be placed in a video image layout with equal sized video images, the main video image 701 may be scaled down and the two side video images 703 and 705 may be scaled up (or not scaled at all). Other scaling combinations are also contemplated. In some embodiments, the separated video images may not be scaled (e.g., the separated video images may be only rearranged).
  • In some embodiments, the endpoint 103 may form a new composite video image that includes its current local video image 555 e (see FIG. 5 a) as one of the video images. In some embodiments, the layout of the received video image layout and the new video image layout may be the same. In some embodiments, the current local video image 555 e may be more current than the local video image 555 c originally sent to the MCU 108 and received in the composite video image 505.
  • At 313, the endpoint 103 may display the new composite video image. FIG. 8 illustrates an example of a new video image layout with three similar sized video images 801, 803, and 805 on display. FIG. 10 illustrates other possible video image layouts, according to various embodiments. Other video image layouts are also contemplated. In some embodiments, the metadata 901 may be displayed (e.g., with each respective video image in the video image layout).
  • Embodiments of a subset or all (and portions or all) of the above may be implemented by program instructions stored in a memory medium or carrier medium and executed by a processor. A memory medium may include any of various types of memory devices or storage devices. The term “memory medium” is intended to include an installation medium, e.g., a Compact Disc Read Only Memory (CD-ROM), floppy disks, or tape device; a computer system memory or random access memory such as Dynamic Random Access Memory (DRAM), Double Data Rate Random Access Memory (DDR RAM), Static Random Access Memory (SRAM), Extended Data Out Random Access Memory (EDO RAM), Rambus Random Access Memory (RDRAM), etc.; or a non-volatile memory such as a magnetic media, e.g., a hard drive, or optical storage. The memory medium may include other types of memory as well, or combinations thereof. In addition, the memory medium may be located in a first computer in which the programs are executed, or may be located in a second different computer that connects to the first computer over a network, such as the Internet. In the latter instance, the second computer may provide program instructions to the first computer for execution. The term “memory medium” may include two or more memory mediums that may reside in different locations, e.g., in different computers that are connected over a network.
  • In some embodiments, a computer system at a respective participant location may include a memory medium(s) on which one or more computer programs or software components according to one embodiment of the present invention may be stored. For example, the memory medium may store one or more programs that are executable to perform the methods described herein. The memory medium may also store operating system software, as well as other software for operation of the computer system.
  • Further modifications and alternative embodiments of various aspects of the invention may be apparent to those skilled in the art in view of this description. Accordingly, this description is to be construed as illustrative only and is for the purpose of teaching those skilled in the art the general manner of carrying out the invention. It is to be understood that the forms of the invention shown and described herein are to be taken as embodiments. Elements and materials may be substituted for those illustrated and described herein, parts and processes may be reversed, and certain features of the invention may be utilized independently, all as would be apparent to one skilled in the art after having the benefit of this description of the invention. Changes may be made in the elements described herein without departing from the spirit and scope of the invention as described in the following claims.

Claims (20)

  1. 1. A computer implemented method, comprising:
    receiving a video frame comprising two or more video images, wherein at least two of the two or more video images are from different video conferencing endpoints; and
    separating the two or more video images into separate video images.
  2. 2. The computer implemented method of claim 1, wherein the video frame is received from a multipoint control unit (MCU).
  3. 3. The computer implemented method of claim 1, wherein separating the video images is performed through the use of coordinate information.
  4. 4. The computer implemented method of claim 3, wherein the coordinate information is received in metadata with the video frame.
  5. 5. The computer implemented method of claim 3, wherein separating the video images is performed by separating the video images at their respective boundaries, wherein the boundaries are identified through the coordinate information received with the video frame.
  6. 6. The computer implemented method of claim 3, wherein the coordinate information indicates a top boundary, a left boundary, a right boundary, and a bottom boundary of at least one video image of the two or more video images.
  7. 7. The computer implemented method of claim 5, wherein indicating a top boundary comprises indicating a pixel location of a starting pixel at a top of the at least one video image of the two or more video images.
  8. 8. The computer implemented method of claim 1, wherein separating the two or more video images comprises cropping the two or more video images down to one video image.
  9. 9. The computer implemented method of claim 1, wherein separating the two or more video images comprises storing the two or more video images in separate locations of a memory.
  10. 10. A method, comprising:
    receiving video images from a plurality of video conferencing endpoints communicatively coupled to an MCU;
    generating a composite video image comprised of at least two video images from respective video conferencing endpoints of the plurality of video conferencing endpoints;
    transmitting the composite video image to at least one video conferencing endpoint; and
    transmitting coordinate information to the at least one video conferencing endpoint, wherein the coordinate information includes information on a location of a video image of the at least two video images within the composite video image;
    wherein the at least one video conferencing endpoint is operable to separate at least one video image from the composite video image using the coordinate information.
  11. 11. The method of claim 10, wherein the coordinate information is comprised in metadata transmitted with a video frame comprising the composite video image.
  12. 12. The method of claim 10, further comprising receiving an image layout preference from the at least one video conferencing endpoint.
  13. 13. The method of claim 12, wherein the composite video image is generated according to the received image layout preference.
  14. 14. The method of claim 10, wherein the at least one video conferencing endpoint is operable to separate the video images by separating the video images at their respective boundaries, wherein the boundaries are identified through the coordinate information received with the composite video image.
  15. 15. The method of claim 10, wherein the coordinate information indicates a top boundary, a left boundary, a right boundary, and a bottom boundary of at least one video image of the two or more video images.
  16. 16. The method of claim 15, wherein indicating a top boundary comprises indicating a pixel location of a starting pixel at a top of the at least one video image of the two or more video images.
  17. 17. The method of claim 10, wherein the at least one video conferencing endpoint is operable to separate the video images by cropping the two or more video images down to one video image.
  18. 18. The method of claim 10, wherein the at least one video conferencing endpoint is operable to separate the video images by storing the two or more video images in separate locations of a memory.
  19. 19. A system, comprising:
    a processor;
    a memory coupled to the processor and configured to store program instructions executable by the processor to:
    receive a video frame comprising two or more video images, wherein at least two of the two or more video images are from different video conferencing endpoints; and
    separate the two or more video images into separate video images.
  20. 20. The system of claim 19, wherein separating the two or more video images is performed by separating the video images at their respective boundaries, wherein the boundaries are identified through coordinate information received with the video frame.
US12142263 2007-06-22 2008-06-19 Virtual decoders Abandoned US20080316295A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US94572307 true 2007-06-22 2007-06-22
US94573407 true 2007-06-22 2007-06-22
US94967407 true 2007-07-13 2007-07-13
US12142263 US20080316295A1 (en) 2007-06-22 2008-06-19 Virtual decoders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12142263 US20080316295A1 (en) 2007-06-22 2008-06-19 Virtual decoders

Publications (1)

Publication Number Publication Date
US20080316295A1 true true US20080316295A1 (en) 2008-12-25

Family

ID=40136043

Family Applications (5)

Application Number Title Priority Date Filing Date
US12142340 Active 2031-06-08 US8237765B2 (en) 2007-06-22 2008-06-19 Video conferencing device which performs multi-way conferencing
US12142302 Active 2031-09-28 US8319814B2 (en) 2007-06-22 2008-06-19 Video conferencing system which allows endpoints to perform continuous presence layout selection
US12142263 Abandoned US20080316295A1 (en) 2007-06-22 2008-06-19 Virtual decoders
US12142377 Active 2031-05-22 US8633962B2 (en) 2007-06-22 2008-06-19 Video decoder which processes multiple video streams
US13605161 Active US8581959B2 (en) 2007-06-22 2012-09-06 Video conferencing system which allows endpoints to perform continuous presence layout selection

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US12142340 Active 2031-06-08 US8237765B2 (en) 2007-06-22 2008-06-19 Video conferencing device which performs multi-way conferencing
US12142302 Active 2031-09-28 US8319814B2 (en) 2007-06-22 2008-06-19 Video conferencing system which allows endpoints to perform continuous presence layout selection

Family Applications After (2)

Application Number Title Priority Date Filing Date
US12142377 Active 2031-05-22 US8633962B2 (en) 2007-06-22 2008-06-19 Video decoder which processes multiple video streams
US13605161 Active US8581959B2 (en) 2007-06-22 2012-09-06 Video conferencing system which allows endpoints to perform continuous presence layout selection

Country Status (1)

Country Link
US (5) US8237765B2 (en)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100315483A1 (en) * 2009-03-20 2010-12-16 King Keith C Automatic Conferencing Based on Participant Presence
US20110074910A1 (en) * 2009-09-28 2011-03-31 King Keith C Supporting Multiple Videoconferencing Streams in a Videoconference
US20110074913A1 (en) * 2009-09-28 2011-03-31 Kulkarni Hrishikesh G Videoconferencing Using a Precoded Bitstream
GB2481298A (en) * 2010-06-15 2011-12-21 Apple Inc Generating, transmitting and receiving object detection metadata
US20120140016A1 (en) * 2010-04-27 2012-06-07 Binu Kaiparambil Shanmukhadas Streaming a Videoconference From a Server Including Boundary Information for Client Layout Adjustment
US20120236023A1 (en) * 2011-03-18 2012-09-20 Seiko Epson Corporation Information storage medium, terminal device, display system, and a method for controlling a terminal device
WO2013019638A1 (en) * 2011-07-29 2013-02-07 Cisco Technology, Inc. Method, computer- readable storage medium, and apparatus for modifying the layout used by a video composing unit to generate a composite video signal
US20130271557A1 (en) * 2010-11-04 2013-10-17 Yoshinaga Kato Communication terminal, communication method and computer readable information recording medium
US8717400B2 (en) 2011-07-29 2014-05-06 Lifesize Communications, Inc. Automatically moving a conferencing based on proximity of a participant
US8780166B2 (en) 2011-04-26 2014-07-15 Lifesize Communications, Inc. Collaborative recording of a videoconference using a recording server
US8786667B2 (en) 2011-04-26 2014-07-22 Lifesize Communications, Inc. Distributed recording of a videoconference in multiple formats
US8842153B2 (en) 2010-04-27 2014-09-23 Lifesize Communications, Inc. Automatically customizing a conferencing system based on proximity of a participant
US8866874B2 (en) 2012-04-20 2014-10-21 Logitech Europe S.A. Adjusting a camera whose video is not currently displayed in a videoconferencing system
US8872882B2 (en) 2012-02-29 2014-10-28 Logitech Europe S.A. Streaming a videoconference using distributed transcoding
US8885057B2 (en) 2011-12-16 2014-11-11 Logitech Europe S.A. Performing camera control using a remote control device
US8922615B2 (en) 2011-12-16 2014-12-30 Logitech Europe S.A. Customizing input to a videoconference using a remote control device
US8922616B2 (en) 2011-12-16 2014-12-30 Logitech Europe S.A. Customizing a mute input of a remote control device
US8928726B2 (en) 2012-04-20 2015-01-06 Logitech Europe S.A. Videoconferencing system with context sensitive wake features
US8937636B2 (en) 2012-04-20 2015-01-20 Logitech Europe S.A. Using previous selection information in a user interface having a plurality of icons
US20150054911A1 (en) * 2008-11-24 2015-02-26 Steven M. Gottlieb Systems and methods for interfacing video games and user communications
US8970658B2 (en) 2012-04-20 2015-03-03 Logitech Europe S.A. User interface allowing a participant to rejoin a previously left videoconference
US9021371B2 (en) 2012-04-20 2015-04-28 Logitech Europe S.A. Customizing a user interface having a plurality of top-level icons based on a change in context
US20150304360A1 (en) * 2014-04-17 2015-10-22 Huawei Technologies Co., Ltd. Videoconferencing Information Presentation Method, Apparatus, and System
US20150341596A1 (en) * 2014-05-23 2015-11-26 Polycom, Inc. Method and system for new layout experience in video communication
CN105453556A (en) * 2013-06-06 2016-03-30 株式会社理光 Transmission terminal, transmission system, display method and program
US9661270B2 (en) 2008-11-24 2017-05-23 Shindig, Inc. Multiparty communications systems and methods that optimize communications based on mode and available bandwidth
US10133916B2 (en) 2016-09-07 2018-11-20 Steven M. Gottlieb Image and identity validation in video chat events

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9516272B2 (en) * 2010-03-31 2016-12-06 Polycom, Inc. Adapting a continuous presence layout to a discussion situation
US8446454B2 (en) * 2007-05-21 2013-05-21 Polycom, Inc. Dynamic adaption of a continuous presence videoconferencing layout based on video content
EP2227013A3 (en) * 2009-03-04 2017-05-10 Lifesize, Inc. Virtual distributed multipoint control unit
US8330794B2 (en) * 2009-06-10 2012-12-11 Microsoft Corporation Implementing multiple dominant speaker video streams with manual override
US20100332598A1 (en) * 2009-06-25 2010-12-30 Ashish Goyal Routing Videoconference Signals Based on Network Configurations
US8179417B2 (en) * 2009-07-22 2012-05-15 Hewlett-Packard Development Company, L.P. Video collaboration
US8433755B2 (en) * 2010-04-07 2013-04-30 Apple Inc. Dynamic designation of a central distributor in a multi-participant conference
US8704870B2 (en) 2010-05-13 2014-04-22 Lifesize Communications, Inc. Multiway telepresence without a hardware MCU
US8717407B2 (en) 2010-05-13 2014-05-06 Lifesize Communications, Inc. Telepresence between a multi-unit location and a plurality of single unit locations
US8717408B2 (en) * 2010-05-13 2014-05-06 Lifesize Communications, Inc. Conducting a private videoconference within a videoconference via an MCU
US8675038B2 (en) 2010-09-28 2014-03-18 Microsoft Corporation Two-way video conferencing system
EP2448265A1 (en) 2010-10-26 2012-05-02 Google, Inc. Lip synchronization in a video conference
US8427520B2 (en) * 2010-12-02 2013-04-23 Polycom, Inc. Removing a self image from a continuous presence video image
US9001276B2 (en) 2011-06-30 2015-04-07 Tata Consultancy Services Limited System and method for multiplexing video contents from multiple broadcasting channels into single broadcasting channel
US20130019150A1 (en) * 2011-07-13 2013-01-17 Rony Zarom System and method for automatic and dynamic layout design for media broadcast
CN102883130B (en) * 2011-07-15 2018-03-27 中兴通讯股份有限公司 Control method and apparatus telepresence venue
US8589487B1 (en) * 2011-07-25 2013-11-19 Sprint Communications Company L.P. Parallel multimedia conferencing
US9210302B1 (en) 2011-08-10 2015-12-08 Google Inc. System, method and apparatus for multipoint video transmission
US20130106988A1 (en) * 2011-10-28 2013-05-02 Joseph Davis Compositing of videoconferencing streams
US8749612B1 (en) 2011-12-01 2014-06-10 Google Inc. Reduced bandwidth usage in video conferencing
US8917309B1 (en) 2012-03-08 2014-12-23 Google, Inc. Key frame distribution in video conferencing
US8791982B1 (en) 2012-06-27 2014-07-29 Google Inc. Video multicast engine
CN103051864B (en) * 2012-12-26 2016-08-17 浙江元亨通信技术股份有限公司 Mobile video conferencing method
US9930293B2 (en) 2013-03-15 2018-03-27 Zeller Digital Innovations, Inc. Presentation systems and related methods
US9462225B2 (en) 2013-03-15 2016-10-04 Zeller Digital Innovations, Inc. Presentation systems and related methods
JP5664687B2 (en) * 2013-03-22 2015-02-04 カシオ計算機株式会社 Image processing apparatus, image processing method, and program
US9954909B2 (en) * 2013-08-27 2018-04-24 Cisco Technology, Inc. System and associated methodology for enhancing communication sessions between multiple users
US9210379B2 (en) 2014-02-27 2015-12-08 Google Inc. Displaying a presenter during a video conference
US9609275B2 (en) 2015-07-08 2017-03-28 Google Inc. Single-stream transmission method for multi-user video conferencing
US9769419B2 (en) 2015-09-30 2017-09-19 Cisco Technology, Inc. Camera system for video conference endpoints
US9948888B1 (en) * 2016-08-04 2018-04-17 Google Llc Techniques for utilizing a television for a video chat session

Citations (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686698A (en) * 1985-04-08 1987-08-11 Datapoint Corporation Workstation for interfacing with a video conferencing network
US4893326A (en) * 1987-05-04 1990-01-09 Video Telecom Corp. Video-telephone communications system
US5014267A (en) * 1989-04-06 1991-05-07 Datapoint Corporation Video conferencing network
US5239623A (en) * 1988-10-25 1993-08-24 Oki Electric Industry Co., Ltd. Three-dimensional image generator
US5365265A (en) * 1991-07-15 1994-11-15 Hitachi, Ltd. Multipoint teleconference system employing communication channels set in ring configuration
US5374952A (en) * 1993-06-03 1994-12-20 Target Technologies, Inc. Videoconferencing system
US5382972A (en) * 1988-09-22 1995-01-17 Kannes; Deno Video conferencing system for courtroom and other applications
US5398309A (en) * 1993-05-17 1995-03-14 Intel Corporation Method and apparatus for generating composite images using multiple local masks
US5453780A (en) * 1994-04-28 1995-09-26 Bell Communications Research, Inc. Continous presence video signal combiner
US5515099A (en) * 1993-10-20 1996-05-07 Video Conferencing Systems, Inc. Video conferencing system controlled by menu and pointer
US5528740A (en) * 1993-02-25 1996-06-18 Document Technologies, Inc. Conversion of higher resolution images for display on a lower-resolution display device
US5534914A (en) * 1993-06-03 1996-07-09 Target Technologies, Inc. Videoconferencing system
US5537440A (en) * 1994-01-07 1996-07-16 Motorola, Inc. Efficient transcoding device and method
US5548591A (en) * 1993-12-28 1996-08-20 Canon Kabushiki Kaisha Multi-point communication system and communication terminal station apparatus
US5572248A (en) * 1994-09-19 1996-11-05 Teleport Corporation Teleconferencing method and system for providing face-to-face, non-animated teleconference environment
US5581671A (en) * 1993-10-18 1996-12-03 Hitachi Medical Corporation Method and apparatus for moving-picture display of three-dimensional images
US5594859A (en) * 1992-06-03 1997-01-14 Digital Equipment Corporation Graphical user interface for video teleconferencing
US5600646A (en) * 1995-01-27 1997-02-04 Videoserver, Inc. Video teleconferencing system with digital transcoding
US5617539A (en) * 1993-10-01 1997-04-01 Vicor, Inc. Multimedia collaboration system with separate data network and A/V network controlled by information transmitting on the data network
US5625410A (en) * 1993-04-21 1997-04-29 Kinywa Washino Video monitoring and conferencing system
US5629736A (en) * 1994-11-01 1997-05-13 Lucent Technologies Inc. Coded domain picture composition for multimedia communications systems
US5640543A (en) * 1992-06-19 1997-06-17 Intel Corporation Scalable multimedia platform architecture
US5649055A (en) * 1993-03-26 1997-07-15 Hughes Electronics Voice activity detector for speech signals in variable background noise
US5657096A (en) * 1995-05-03 1997-08-12 Lukacs; Michael Edward Real time video conferencing system and method with multilayer keying of multiple video images
US5684527A (en) * 1992-07-28 1997-11-04 Fujitsu Limited Adaptively controlled multipoint videoconferencing system
US5719951A (en) * 1990-07-17 1998-02-17 British Telecommunications Public Limited Company Normalized image feature processing
US5737011A (en) * 1995-05-03 1998-04-07 Bell Communications Research, Inc. Infinitely expandable real-time video conferencing system
US5751338A (en) * 1994-12-30 1998-05-12 Visionary Corporate Technologies Methods and systems for multimedia communications via public telephone networks
US5764277A (en) * 1995-11-08 1998-06-09 Bell Communications Research, Inc. Group-of-block based video signal combining for multipoint continuous presence video conferencing
US5767897A (en) * 1994-10-31 1998-06-16 Picturetel Corporation Video conferencing system
US5812789A (en) * 1996-08-26 1998-09-22 Stmicroelectronics, Inc. Video and/or audio decompression and/or compression device that shares a memory interface
US5821986A (en) * 1994-11-03 1998-10-13 Picturetel Corporation Method and apparatus for visual communications in a scalable network environment
US5831666A (en) * 1992-06-03 1998-11-03 Digital Equipment Corporation Video data scaling for video teleconferencing workstations communicating by digital data network
US5838664A (en) * 1997-07-17 1998-11-17 Videoserver, Inc. Video teleconferencing system with digital transcoding
US5841763A (en) * 1995-06-13 1998-11-24 Multilink, Inc. Audio-video conferencing system
US5859979A (en) * 1993-11-24 1999-01-12 Intel Corporation System for negotiating conferencing capabilities by selecting a subset of a non-unique set of conferencing capabilities to specify a unique set of conferencing capabilities
US5870146A (en) * 1997-01-21 1999-02-09 Multilink, Incorporated Device and method for digital video transcoding
US5896128A (en) * 1995-05-03 1999-04-20 Bell Communications Research, Inc. System and method for associating multimedia objects for use in a video conferencing system
US5900907A (en) * 1997-10-17 1999-05-04 Polycom, Inc. Integrated videoconferencing unit
US5914940A (en) * 1996-02-09 1999-06-22 Nec Corporation Multipoint video conference controlling method and system capable of synchronizing video and audio packets
US5990931A (en) * 1996-04-10 1999-11-23 Vtel Corporation Automatic display update of still frame images for videoconferencing
US5995608A (en) * 1997-03-28 1999-11-30 Confertech Systems Inc. Method and apparatus for on-demand teleconferencing
US6038532A (en) * 1990-01-18 2000-03-14 Matsushita Electric Industrial Co., Ltd. Signal processing device for cancelling noise in a signal
US6043844A (en) * 1997-02-18 2000-03-28 Conexant Systems, Inc. Perceptually motivated trellis based rate control method and apparatus for low bit rate video coding
US6049694A (en) * 1988-10-17 2000-04-11 Kassatly; Samuel Anthony Multi-point video conference system and method
US6078350A (en) * 1992-02-19 2000-06-20 8 X 8, Inc. System and method for distribution of encoded video data
US6101480A (en) * 1998-06-19 2000-08-08 International Business Machines Electronic calendar with group scheduling and automated scheduling techniques for coordinating conflicting schedules
US6122668A (en) * 1995-11-02 2000-09-19 Starlight Networks Synchronization of audio and video signals in a live multicast in a LAN
US6128649A (en) * 1997-06-02 2000-10-03 Nortel Networks Limited Dynamic selection of media streams for display
US6195184B1 (en) * 1999-06-19 2001-02-27 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration High-resolution large-field-of-view three-dimensional hologram display system and method thereof
US6243129B1 (en) * 1998-01-09 2001-06-05 8×8, Inc. System and method for videoconferencing and simultaneously viewing a supplemental video source
US6281882B1 (en) * 1995-10-06 2001-08-28 Agilent Technologies, Inc. Proximity detector for a seeing eye mouse
US6285661B1 (en) * 1998-01-28 2001-09-04 Picturetel Corporation Low delay real time digital video mixing for multipoint video conferencing
US6288740B1 (en) * 1998-06-11 2001-09-11 Ezenia! Inc. Method and apparatus for continuous presence conferencing with voice-activated quadrant selection
US6292204B1 (en) * 1993-09-28 2001-09-18 Ncr Corporation Method and apparatus for display of video images in a video conferencing system
US6300973B1 (en) * 2000-01-13 2001-10-09 Meir Feder Method and system for multimedia communication control
US6314211B1 (en) * 1997-12-30 2001-11-06 Samsung Electronics Co., Ltd. Apparatus and method for converting two-dimensional image sequence into three-dimensional image using conversion of motion disparity into horizontal disparity and post-processing method during generation of three-dimensional image
US6400996B1 (en) * 1999-02-01 2002-06-04 Steven M. Hoffberg Adaptive pattern recognition based control system and method
US6453285B1 (en) * 1998-08-21 2002-09-17 Polycom, Inc. Speech activity detector for use in noise reduction system, and methods therefor
US20020133247A1 (en) * 2000-11-11 2002-09-19 Smith Robert D. System and method for seamlessly switching between media streams
US6480823B1 (en) * 1998-03-24 2002-11-12 Matsushita Electric Industrial Co., Ltd. Speech detection for noisy conditions
US6526099B1 (en) * 1996-10-25 2003-02-25 Telefonaktiebolaget Lm Ericsson (Publ) Transcoder
US6535604B1 (en) * 1998-09-04 2003-03-18 Nortel Networks Limited Voice-switching device and method for multiple receivers
US6564380B1 (en) * 1999-01-26 2003-05-13 Pixelworld Networks, Inc. System and method for sending live video on the internet
US6590604B1 (en) * 2000-04-07 2003-07-08 Polycom, Inc. Personal videoconferencing system having distributed processing architecture
US6594688B2 (en) * 1993-10-01 2003-07-15 Collaboration Properties, Inc. Dedicated echo canceler for a workstation
US6603501B1 (en) * 2000-07-12 2003-08-05 Onscreen24 Corporation Videoconferencing using distributed processing
US20030174146A1 (en) * 2002-02-04 2003-09-18 Michael Kenoyer Apparatus and method for providing electronic image manipulation in video conferencing applications
US6646997B1 (en) * 1999-10-25 2003-11-11 Voyant Technologies, Inc. Large-scale, fault-tolerant audio conferencing in a purely packet-switched network
US6728221B1 (en) * 1999-04-09 2004-04-27 Siemens Information & Communication Networks, Inc. Method and apparatus for efficiently utilizing conference bridge capacity
US6744460B1 (en) * 1999-10-04 2004-06-01 Polycom, Inc. Video display mode automatic switching system and method
US6760415B2 (en) * 2000-03-17 2004-07-06 Qwest Communications International Inc. Voice telephony system
US6774928B2 (en) * 2001-07-03 2004-08-10 Koninklijke Philips Electronics N.V. Mobile for video-conferencing
US20040183897A1 (en) * 2001-08-07 2004-09-23 Michael Kenoyer System and method for high resolution videoconferencing
US6813083B2 (en) * 2000-02-22 2004-11-02 Japan Science And Technology Corporation Device for reproducing three-dimensional image with background
US6816904B1 (en) * 1997-11-04 2004-11-09 Collaboration Properties, Inc. Networked video multimedia storage server environment
US6847403B1 (en) * 1997-11-05 2005-01-25 Polycom, Inc. Integrated portable videoconferencing unit
US6909552B2 (en) * 2003-03-25 2005-06-21 Dhs, Ltd. Three-dimensional image calculating method, three-dimensional image generating method and three-dimensional image display device
US20050198134A1 (en) * 2001-06-02 2005-09-08 Michael Kenoyer System and method for point to point integration of personal computers with videoconferencing systems
US6944259B2 (en) * 2001-09-26 2005-09-13 Massachusetts Institute Of Technology Versatile cone-beam imaging apparatus and method
US6967321B2 (en) * 2002-11-01 2005-11-22 Agilent Technologies, Inc. Optical navigation sensor with integrated lens
US20060013416A1 (en) * 2004-06-30 2006-01-19 Polycom, Inc. Stereo microphone processing for teleconferencing
US20060087553A1 (en) * 2004-10-15 2006-04-27 Kenoyer Michael L Video conferencing system transcoder
US7089285B1 (en) * 1999-10-05 2006-08-08 Polycom, Inc. Videoconferencing apparatus having integrated multi-point conference capabilities
US7120157B2 (en) * 2003-01-13 2006-10-10 The Regents Of The University Of California Edge router for optical label switched network
US20060244817A1 (en) * 2005-04-29 2006-11-02 Michael Harville Method and system for videoconferencing between parties at N sites
US20060244812A1 (en) * 2005-04-28 2006-11-02 Hyeonkuk Jeong Video processing in a multi-participant video conference
US7133062B2 (en) * 2003-07-31 2006-11-07 Polycom, Inc. Graphical user interface for video feed on videoconference terminal
US20060259552A1 (en) * 2005-05-02 2006-11-16 Mock Wayne E Live video icons for signal selection in a videoconferencing system
US20070009114A1 (en) * 2005-05-02 2007-01-11 Kenoyer Michael L Integrated videoconferencing system
US20070165106A1 (en) * 2005-05-02 2007-07-19 Groves Randall D Distributed Videoconferencing Processing
US7339605B2 (en) * 2004-04-16 2008-03-04 Polycom, Inc. Conference link between a speakerphone and a video conference unit
US7876978B2 (en) * 2005-10-13 2011-01-25 Penthera Technologies, Inc. Regions of interest in video frames

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5828591A (en) * 1992-11-02 1998-10-27 Intel Corporation Method and apparatus for using a cache memory to store and retrieve intermediate and final results
EP0849519A1 (en) * 1995-10-21 1998-06-24 Daimler-Benz Aerospace Airbus Gesellschaft mit beschränkter Haftung Fastening element for fixation of flexible protection hoses
JPH09149396A (en) * 1995-11-27 1997-06-06 Fujitsu Ltd Multi-spot television conference system
US5828838A (en) * 1996-06-20 1998-10-27 Intel Corporation Method and apparatus for conducting multi-point electronic conferences
US6657975B1 (en) 1999-10-25 2003-12-02 Voyant Technologies, Inc. Large-scale, fault-tolerant audio conferencing over a hybrid network
US20030232648A1 (en) 2002-06-14 2003-12-18 Prindle Joseph Charles Videophone and videoconferencing apparatus and method for a video game console
US20040008249A1 (en) * 2002-07-10 2004-01-15 Steve Nelson Method and apparatus for controllable conference content via back-channel video interface
US7321384B1 (en) 2003-06-03 2008-01-22 Cisco Technology, Inc. Method and apparatus for using far end camera control (FECC) messages to implement participant and layout selection in a multipoint videoconference
US20060031628A1 (en) * 2004-06-03 2006-02-09 Suman Sharma Buffer management in a network device without SRAM
US7312809B2 (en) 2004-10-12 2007-12-25 Codian Ltd. Method and apparatus for controlling a conference call
US7505447B2 (en) * 2004-11-05 2009-03-17 Ruckus Wireless, Inc. Systems and methods for improved data throughput in communications networks
US8004542B2 (en) * 2005-01-17 2011-08-23 Kabushiki Kaisha Toshiba Video composition apparatus, video composition method and video composition program
US7899170B2 (en) 2005-04-28 2011-03-01 Apple Inc. Multi-participant conference setup
US7692682B2 (en) 2005-04-28 2010-04-06 Apple Inc. Video encoding in a video conference
US7949117B2 (en) 2005-04-28 2011-05-24 Apple Inc. Heterogeneous video conferencing
US7660464B1 (en) * 2005-12-22 2010-02-09 Adobe Systems Incorporated User interface for high dynamic range merge image selection
JP5181639B2 (en) 2006-12-04 2013-04-10 新日鐵住金株式会社 Welded steel pipe and its manufacturing method for high strength thick line pipe superior in low temperature toughness

Patent Citations (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686698A (en) * 1985-04-08 1987-08-11 Datapoint Corporation Workstation for interfacing with a video conferencing network
US4893326A (en) * 1987-05-04 1990-01-09 Video Telecom Corp. Video-telephone communications system
US5382972A (en) * 1988-09-22 1995-01-17 Kannes; Deno Video conferencing system for courtroom and other applications
US6049694A (en) * 1988-10-17 2000-04-11 Kassatly; Samuel Anthony Multi-point video conference system and method
US5239623A (en) * 1988-10-25 1993-08-24 Oki Electric Industry Co., Ltd. Three-dimensional image generator
US5014267A (en) * 1989-04-06 1991-05-07 Datapoint Corporation Video conferencing network
US6038532A (en) * 1990-01-18 2000-03-14 Matsushita Electric Industrial Co., Ltd. Signal processing device for cancelling noise in a signal
US5719951A (en) * 1990-07-17 1998-02-17 British Telecommunications Public Limited Company Normalized image feature processing
US5365265A (en) * 1991-07-15 1994-11-15 Hitachi, Ltd. Multipoint teleconference system employing communication channels set in ring configuration
US6373517B1 (en) * 1992-02-19 2002-04-16 8X8, Inc. System and method for distribution of encoded video data
US6078350A (en) * 1992-02-19 2000-06-20 8 X 8, Inc. System and method for distribution of encoded video data
US5594859A (en) * 1992-06-03 1997-01-14 Digital Equipment Corporation Graphical user interface for video teleconferencing
US5831666A (en) * 1992-06-03 1998-11-03 Digital Equipment Corporation Video data scaling for video teleconferencing workstations communicating by digital data network
US5640543A (en) * 1992-06-19 1997-06-17 Intel Corporation Scalable multimedia platform architecture
US5684527A (en) * 1992-07-28 1997-11-04 Fujitsu Limited Adaptively controlled multipoint videoconferencing system
US5528740A (en) * 1993-02-25 1996-06-18 Document Technologies, Inc. Conversion of higher resolution images for display on a lower-resolution display device
US5649055A (en) * 1993-03-26 1997-07-15 Hughes Electronics Voice activity detector for speech signals in variable background noise
US5625410A (en) * 1993-04-21 1997-04-29 Kinywa Washino Video monitoring and conferencing system
US5398309A (en) * 1993-05-17 1995-03-14 Intel Corporation Method and apparatus for generating composite images using multiple local masks
US5374952A (en) * 1993-06-03 1994-12-20 Target Technologies, Inc. Videoconferencing system
US5534914A (en) * 1993-06-03 1996-07-09 Target Technologies, Inc. Videoconferencing system
US6292204B1 (en) * 1993-09-28 2001-09-18 Ncr Corporation Method and apparatus for display of video images in a video conferencing system
US5617539A (en) * 1993-10-01 1997-04-01 Vicor, Inc. Multimedia collaboration system with separate data network and A/V network controlled by information transmitting on the data network
US5689641A (en) * 1993-10-01 1997-11-18 Vicor, Inc. Multimedia collaboration system arrangement for routing compressed AV signal through a participant site without decompressing the AV signal
US6594688B2 (en) * 1993-10-01 2003-07-15 Collaboration Properties, Inc. Dedicated echo canceler for a workstation
US5581671A (en) * 1993-10-18 1996-12-03 Hitachi Medical Corporation Method and apparatus for moving-picture display of three-dimensional images
US5515099A (en) * 1993-10-20 1996-05-07 Video Conferencing Systems, Inc. Video conferencing system controlled by menu and pointer
US5859979A (en) * 1993-11-24 1999-01-12 Intel Corporation System for negotiating conferencing capabilities by selecting a subset of a non-unique set of conferencing capabilities to specify a unique set of conferencing capabilities
US5548591A (en) * 1993-12-28 1996-08-20 Canon Kabushiki Kaisha Multi-point communication system and communication terminal station apparatus
US5537440A (en) * 1994-01-07 1996-07-16 Motorola, Inc. Efficient transcoding device and method
US5453780A (en) * 1994-04-28 1995-09-26 Bell Communications Research, Inc. Continous presence video signal combiner
US5572248A (en) * 1994-09-19 1996-11-05 Teleport Corporation Teleconferencing method and system for providing face-to-face, non-animated teleconference environment
US6160573A (en) * 1994-09-19 2000-12-12 Telesuite Corporation Teleconference method and system for providing face-to-face teleconference environment
US6654045B2 (en) * 1994-09-19 2003-11-25 Telesuite Corporation Teleconferencing method and system
US5767897A (en) * 1994-10-31 1998-06-16 Picturetel Corporation Video conferencing system
US5629736A (en) * 1994-11-01 1997-05-13 Lucent Technologies Inc. Coded domain picture composition for multimedia communications systems
US5821986A (en) * 1994-11-03 1998-10-13 Picturetel Corporation Method and apparatus for visual communications in a scalable network environment
US5751338A (en) * 1994-12-30 1998-05-12 Visionary Corporate Technologies Methods and systems for multimedia communications via public telephone networks
US5600646A (en) * 1995-01-27 1997-02-04 Videoserver, Inc. Video teleconferencing system with digital transcoding
US5657096A (en) * 1995-05-03 1997-08-12 Lukacs; Michael Edward Real time video conferencing system and method with multilayer keying of multiple video images
US5896128A (en) * 1995-05-03 1999-04-20 Bell Communications Research, Inc. System and method for associating multimedia objects for use in a video conferencing system
US5737011A (en) * 1995-05-03 1998-04-07 Bell Communications Research, Inc. Infinitely expandable real-time video conferencing system
US5841763A (en) * 1995-06-13 1998-11-24 Multilink, Inc. Audio-video conferencing system
US6281882B1 (en) * 1995-10-06 2001-08-28 Agilent Technologies, Inc. Proximity detector for a seeing eye mouse
US6122668A (en) * 1995-11-02 2000-09-19 Starlight Networks Synchronization of audio and video signals in a live multicast in a LAN
US5764277A (en) * 1995-11-08 1998-06-09 Bell Communications Research, Inc. Group-of-block based video signal combining for multipoint continuous presence video conferencing
US5914940A (en) * 1996-02-09 1999-06-22 Nec Corporation Multipoint video conference controlling method and system capable of synchronizing video and audio packets
US5990931A (en) * 1996-04-10 1999-11-23 Vtel Corporation Automatic display update of still frame images for videoconferencing
US5812789A (en) * 1996-08-26 1998-09-22 Stmicroelectronics, Inc. Video and/or audio decompression and/or compression device that shares a memory interface
US6526099B1 (en) * 1996-10-25 2003-02-25 Telefonaktiebolaget Lm Ericsson (Publ) Transcoder
US5870146A (en) * 1997-01-21 1999-02-09 Multilink, Incorporated Device and method for digital video transcoding
US6043844A (en) * 1997-02-18 2000-03-28 Conexant Systems, Inc. Perceptually motivated trellis based rate control method and apparatus for low bit rate video coding
US5995608A (en) * 1997-03-28 1999-11-30 Confertech Systems Inc. Method and apparatus for on-demand teleconferencing
US6128649A (en) * 1997-06-02 2000-10-03 Nortel Networks Limited Dynamic selection of media streams for display
US5838664A (en) * 1997-07-17 1998-11-17 Videoserver, Inc. Video teleconferencing system with digital transcoding
US5900907A (en) * 1997-10-17 1999-05-04 Polycom, Inc. Integrated videoconferencing unit
US6816904B1 (en) * 1997-11-04 2004-11-09 Collaboration Properties, Inc. Networked video multimedia storage server environment
US6847403B1 (en) * 1997-11-05 2005-01-25 Polycom, Inc. Integrated portable videoconferencing unit
US6314211B1 (en) * 1997-12-30 2001-11-06 Samsung Electronics Co., Ltd. Apparatus and method for converting two-dimensional image sequence into three-dimensional image using conversion of motion disparity into horizontal disparity and post-processing method during generation of three-dimensional image
US6243129B1 (en) * 1998-01-09 2001-06-05 8×8, Inc. System and method for videoconferencing and simultaneously viewing a supplemental video source
US6285661B1 (en) * 1998-01-28 2001-09-04 Picturetel Corporation Low delay real time digital video mixing for multipoint video conferencing
US6480823B1 (en) * 1998-03-24 2002-11-12 Matsushita Electric Industrial Co., Ltd. Speech detection for noisy conditions
US6288740B1 (en) * 1998-06-11 2001-09-11 Ezenia! Inc. Method and apparatus for continuous presence conferencing with voice-activated quadrant selection
US6101480A (en) * 1998-06-19 2000-08-08 International Business Machines Electronic calendar with group scheduling and automated scheduling techniques for coordinating conflicting schedules
US6453285B1 (en) * 1998-08-21 2002-09-17 Polycom, Inc. Speech activity detector for use in noise reduction system, and methods therefor
US6535604B1 (en) * 1998-09-04 2003-03-18 Nortel Networks Limited Voice-switching device and method for multiple receivers
US6564380B1 (en) * 1999-01-26 2003-05-13 Pixelworld Networks, Inc. System and method for sending live video on the internet
US6400996B1 (en) * 1999-02-01 2002-06-04 Steven M. Hoffberg Adaptive pattern recognition based control system and method
US6728221B1 (en) * 1999-04-09 2004-04-27 Siemens Information & Communication Networks, Inc. Method and apparatus for efficiently utilizing conference bridge capacity
US6195184B1 (en) * 1999-06-19 2001-02-27 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration High-resolution large-field-of-view three-dimensional hologram display system and method thereof
US6744460B1 (en) * 1999-10-04 2004-06-01 Polycom, Inc. Video display mode automatic switching system and method
US7089285B1 (en) * 1999-10-05 2006-08-08 Polycom, Inc. Videoconferencing apparatus having integrated multi-point conference capabilities
US6646997B1 (en) * 1999-10-25 2003-11-11 Voyant Technologies, Inc. Large-scale, fault-tolerant audio conferencing in a purely packet-switched network
US6300973B1 (en) * 2000-01-13 2001-10-09 Meir Feder Method and system for multimedia communication control
US6757005B1 (en) * 2000-01-13 2004-06-29 Polycom Israel, Ltd. Method and system for multimedia video processing
US6813083B2 (en) * 2000-02-22 2004-11-02 Japan Science And Technology Corporation Device for reproducing three-dimensional image with background
US6760415B2 (en) * 2000-03-17 2004-07-06 Qwest Communications International Inc. Voice telephony system
US6590604B1 (en) * 2000-04-07 2003-07-08 Polycom, Inc. Personal videoconferencing system having distributed processing architecture
US6603501B1 (en) * 2000-07-12 2003-08-05 Onscreen24 Corporation Videoconferencing using distributed processing
US20020133247A1 (en) * 2000-11-11 2002-09-19 Smith Robert D. System and method for seamlessly switching between media streams
US20050198134A1 (en) * 2001-06-02 2005-09-08 Michael Kenoyer System and method for point to point integration of personal computers with videoconferencing systems
US6774928B2 (en) * 2001-07-03 2004-08-10 Koninklijke Philips Electronics N.V. Mobile for video-conferencing
US20040183897A1 (en) * 2001-08-07 2004-09-23 Michael Kenoyer System and method for high resolution videoconferencing
US6944259B2 (en) * 2001-09-26 2005-09-13 Massachusetts Institute Of Technology Versatile cone-beam imaging apparatus and method
US20030174146A1 (en) * 2002-02-04 2003-09-18 Michael Kenoyer Apparatus and method for providing electronic image manipulation in video conferencing applications
US6967321B2 (en) * 2002-11-01 2005-11-22 Agilent Technologies, Inc. Optical navigation sensor with integrated lens
US7120157B2 (en) * 2003-01-13 2006-10-10 The Regents Of The University Of California Edge router for optical label switched network
US6909552B2 (en) * 2003-03-25 2005-06-21 Dhs, Ltd. Three-dimensional image calculating method, three-dimensional image generating method and three-dimensional image display device
US7133062B2 (en) * 2003-07-31 2006-11-07 Polycom, Inc. Graphical user interface for video feed on videoconference terminal
US7339605B2 (en) * 2004-04-16 2008-03-04 Polycom, Inc. Conference link between a speakerphone and a video conference unit
US20060013416A1 (en) * 2004-06-30 2006-01-19 Polycom, Inc. Stereo microphone processing for teleconferencing
US20060087553A1 (en) * 2004-10-15 2006-04-27 Kenoyer Michael L Video conferencing system transcoder
US20060244812A1 (en) * 2005-04-28 2006-11-02 Hyeonkuk Jeong Video processing in a multi-participant video conference
US20060244817A1 (en) * 2005-04-29 2006-11-02 Michael Harville Method and system for videoconferencing between parties at N sites
US20060259552A1 (en) * 2005-05-02 2006-11-16 Mock Wayne E Live video icons for signal selection in a videoconferencing system
US20070009114A1 (en) * 2005-05-02 2007-01-11 Kenoyer Michael L Integrated videoconferencing system
US20070009113A1 (en) * 2005-05-02 2007-01-11 Kenoyer Michael L Set top box videoconferencing system
US20070165106A1 (en) * 2005-05-02 2007-07-19 Groves Randall D Distributed Videoconferencing Processing
US7876978B2 (en) * 2005-10-13 2011-01-25 Penthera Technologies, Inc. Regions of interest in video frames

Cited By (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9661270B2 (en) 2008-11-24 2017-05-23 Shindig, Inc. Multiparty communications systems and methods that optimize communications based on mode and available bandwidth
US20150054911A1 (en) * 2008-11-24 2015-02-26 Steven M. Gottlieb Systems and methods for interfacing video games and user communications
US9782675B2 (en) * 2008-11-24 2017-10-10 Shindig, Inc. Systems and methods for interfacing video games and user communications
US20100315483A1 (en) * 2009-03-20 2010-12-16 King Keith C Automatic Conferencing Based on Participant Presence
US20110074910A1 (en) * 2009-09-28 2011-03-31 King Keith C Supporting Multiple Videoconferencing Streams in a Videoconference
US20110074913A1 (en) * 2009-09-28 2011-03-31 Kulkarni Hrishikesh G Videoconferencing Using a Precoded Bitstream
US8558862B2 (en) 2009-09-28 2013-10-15 Lifesize Communications, Inc. Videoconferencing using a precoded bitstream
US8754922B2 (en) 2009-09-28 2014-06-17 Lifesize Communications, Inc. Supporting multiple videoconferencing streams in a videoconference
US20120140016A1 (en) * 2010-04-27 2012-06-07 Binu Kaiparambil Shanmukhadas Streaming a Videoconference From a Server Including Boundary Information for Client Layout Adjustment
US9621854B2 (en) 2010-04-27 2017-04-11 Lifesize, Inc. Recording a videoconference using separate video
US9204097B2 (en) 2010-04-27 2015-12-01 Lifesize Communications, Inc. Recording a videoconference using video different from the videoconference
US8786666B2 (en) 2010-04-27 2014-07-22 Lifesize Communications, Inc. Providing separate video and presentation streams to a recording server
US8717404B2 (en) 2010-04-27 2014-05-06 Lifesize Communications, Inc. Recording a videoconference based on recording configurations
US8854416B2 (en) 2010-04-27 2014-10-07 Lifesize Communications, Inc. Recording a videoconference using a recording server
US8786665B2 (en) * 2010-04-27 2014-07-22 Lifesize Communications, Inc. Streaming a videoconference from a server including boundary information for client layout adjustment
US8854417B2 (en) 2010-04-27 2014-10-07 Lifesize Communications, Inc. Initiating recording of a videoconference via a single user interaction
US8842153B2 (en) 2010-04-27 2014-09-23 Lifesize Communications, Inc. Automatically customizing a conferencing system based on proximity of a participant
US9100630B2 (en) 2010-06-15 2015-08-04 Apple Inc. Object detection metadata
GB2481298B (en) * 2010-06-15 2014-06-11 Apple Inc Object detection metadata
US8744195B2 (en) 2010-06-15 2014-06-03 Apple Inc. Object detection metadata
GB2481298A (en) * 2010-06-15 2011-12-21 Apple Inc Generating, transmitting and receiving object detection metadata
US8509540B2 (en) 2010-06-15 2013-08-13 Apple Inc. Object detection metadata
US9876987B2 (en) 2010-11-04 2018-01-23 Ricoh Company, Ltd. Communication terminal, communication method and computer readable information recording medium
US9654730B2 (en) * 2010-11-04 2017-05-16 Ricoh Company, Ltd. Communication terminal, communication method and computer readable information recording medium
US20130271557A1 (en) * 2010-11-04 2013-10-17 Yoshinaga Kato Communication terminal, communication method and computer readable information recording medium
US9160994B2 (en) * 2011-03-18 2015-10-13 Seiko Epson Corporation Information storage medium, terminal device, display system, and a method for controlling a terminal device
US20120236023A1 (en) * 2011-03-18 2012-09-20 Seiko Epson Corporation Information storage medium, terminal device, display system, and a method for controlling a terminal device
US8780166B2 (en) 2011-04-26 2014-07-15 Lifesize Communications, Inc. Collaborative recording of a videoconference using a recording server
US9407867B2 (en) 2011-04-26 2016-08-02 Lifesize, Inc. Distributed recording or streaming of a videoconference in multiple formats
US8786667B2 (en) 2011-04-26 2014-07-22 Lifesize Communications, Inc. Distributed recording of a videoconference in multiple formats
WO2013019638A1 (en) * 2011-07-29 2013-02-07 Cisco Technology, Inc. Method, computer- readable storage medium, and apparatus for modifying the layout used by a video composing unit to generate a composite video signal
US9497415B2 (en) 2011-07-29 2016-11-15 Cisco Technology, Inc. Method, computer-readable storage medium, and apparatus for modifying the layout used by a video composing unit to generate a composite video signal
US8941708B2 (en) 2011-07-29 2015-01-27 Cisco Technology, Inc. Method, computer-readable storage medium, and apparatus for modifying the layout used by a video composing unit to generate a composite video signal
US8717400B2 (en) 2011-07-29 2014-05-06 Lifesize Communications, Inc. Automatically moving a conferencing based on proximity of a participant
CN103718545A (en) * 2011-07-29 2014-04-09 思科技术公司 Method, computer- readable storage medium, and apparatus for modifying the layout used by a video composing unit to generate a composite video signal
US8922615B2 (en) 2011-12-16 2014-12-30 Logitech Europe S.A. Customizing input to a videoconference using a remote control device
US9531981B2 (en) 2011-12-16 2016-12-27 Lifesize, Inc. Customized mute in a videoconference based on context
US8885057B2 (en) 2011-12-16 2014-11-11 Logitech Europe S.A. Performing camera control using a remote control device
US8922616B2 (en) 2011-12-16 2014-12-30 Logitech Europe S.A. Customizing a mute input of a remote control device
US8872882B2 (en) 2012-02-29 2014-10-28 Logitech Europe S.A. Streaming a videoconference using distributed transcoding
US8982176B2 (en) 2012-02-29 2015-03-17 Logitech Europe S.A. Distributed transcoding of a video based on insufficient computing resources
US9241133B2 (en) 2012-02-29 2016-01-19 Logitech Europe S.A. Distributed recording of a video based on available disk space
US9288441B2 (en) 2012-02-29 2016-03-15 Logitech Europe S.A. Distributed transcoding of a video based on insufficient computing resources
US9288442B2 (en) 2012-02-29 2016-03-15 Logitech Europe S.A. Multicasting a videoconference recording to a plurality of clients
US9019338B2 (en) 2012-02-29 2015-04-28 Logitech Europe S.A. Multicasting a video to a plurality of clients based on a single stream
US8866874B2 (en) 2012-04-20 2014-10-21 Logitech Europe S.A. Adjusting a camera whose video is not currently displayed in a videoconferencing system
US9021371B2 (en) 2012-04-20 2015-04-28 Logitech Europe S.A. Customizing a user interface having a plurality of top-level icons based on a change in context
US9386255B2 (en) 2012-04-20 2016-07-05 Lifesize, Inc. User interface allowing a participant to rejoin a previously left videoconference
US8928726B2 (en) 2012-04-20 2015-01-06 Logitech Europe S.A. Videoconferencing system with context sensitive wake features
US8937636B2 (en) 2012-04-20 2015-01-20 Logitech Europe S.A. Using previous selection information in a user interface having a plurality of icons
US9671927B2 (en) 2012-04-20 2017-06-06 Lifesize, Inc. Selecting an option based on context after waking from sleep
US8970658B2 (en) 2012-04-20 2015-03-03 Logitech Europe S.A. User interface allowing a participant to rejoin a previously left videoconference
US20160105642A1 (en) * 2013-06-06 2016-04-14 Tatsuya Nagase Transmission terminal, transmission system, display method and program
CN105453556A (en) * 2013-06-06 2016-03-30 株式会社理光 Transmission terminal, transmission system, display method and program
US20150304360A1 (en) * 2014-04-17 2015-10-22 Huawei Technologies Co., Ltd. Videoconferencing Information Presentation Method, Apparatus, and System
US20150341596A1 (en) * 2014-05-23 2015-11-26 Polycom, Inc. Method and system for new layout experience in video communication
US9876989B2 (en) * 2014-05-23 2018-01-23 Polycom, Inc. Method and system for new layout experience in video communication
US20180103236A1 (en) * 2014-05-23 2018-04-12 Polycom, Inc. Method and system for new layout experience in video communication
US10133916B2 (en) 2016-09-07 2018-11-20 Steven M. Gottlieb Image and identity validation in video chat events

Also Published As

Publication number Publication date Type
US20080316296A1 (en) 2008-12-25 application
US8237765B2 (en) 2012-08-07 grant
US20080316297A1 (en) 2008-12-25 application
US8581959B2 (en) 2013-11-12 grant
US20120327182A1 (en) 2012-12-27 application
US8319814B2 (en) 2012-11-27 grant
US20080316298A1 (en) 2008-12-25 application
US8633962B2 (en) 2014-01-21 grant

Similar Documents

Publication Publication Date Title
US7124166B2 (en) Duplicating digital streams for digital conferencing using switching technologies
US6243129B1 (en) System and method for videoconferencing and simultaneously viewing a supplemental video source
US6510553B1 (en) Method of streaming video from multiple sources over a network
US20070200923A1 (en) System and method for videoconferencing using scalable video coding and compositing scalable video conferencing servers
US6963353B1 (en) Non-causal speaker selection for conference multicast
US6380968B1 (en) Method and apparatus for controlling a remote video camera in a video conferencing system
US7362349B2 (en) Multi-participant conference system with controllable content delivery using a client monitor back-channel
US20070040900A1 (en) System and Method for Configuring Routing of Video from Multiple Sources to Multiple Destinations of Videoconference Using Software Video Switch
US7532231B2 (en) Video conference recorder
US20050021620A1 (en) Web data conferencing system and method with full motion interactive video
US7710450B2 (en) System and method for dynamic control of image capture in a video conference system
US8081205B2 (en) Dynamically switched and static multiple video streams for a multimedia conference
US5481297A (en) Multipoint digital video communication system
US20040008249A1 (en) Method and apparatus for controllable conference content via back-channel video interface
US6466248B1 (en) Videoconference recording
US20120026278A1 (en) Merging content
US6795106B1 (en) Method and apparatus for controlling a video camera in a video conferencing system
US20120274731A1 (en) Collaborative Recording of a Videoconference Using a Recording Server
US20110261142A1 (en) Providing Separate Video and Presentation Streams to a Recording Server
US7257641B1 (en) Multipoint processing unit
US20070291667A1 (en) Intelligent audio limit method, system and node
US20120274730A1 (en) Distributed Recording of a Videoconference in Multiple Formats
EP1381237A2 (en) Multi-participant conference system with controllable content and delivery via back-channel video interface
US20040083302A1 (en) Transmitting video and audio signals from a human interface to a computer
US20100149306A1 (en) Intelligent grouping and synchronized group switching for multimedia conferencing

Legal Events

Date Code Title Description
AS Assignment

Owner name: LIFESIZE COMMUNICATIONS, INC., TEXAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KING, KEITH C.;MOCK, WAYNE E.;REEL/FRAME:021451/0578;SIGNING DATES FROM 20080724 TO 20080804

AS Assignment

Owner name: LIFESIZE, INC., TEXAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIFESIZE COMMUNICATIONS, INC.;REEL/FRAME:037900/0054

Effective date: 20160225