公开(公告)号：US20120183074A1

公开(公告)日：2012-07-19

申请号：US13007271

申请日：2011-01-14

申请人： Arild FULDSETH

发明人： Arild FULDSETH

IPC分类号： H04N7/26

CPC分类号： H04N19/436 ,  H04N19/119 ,  H04N19/156 ,  H04N19/174 ,  H04N19/61

摘要： In video encoding it is common to encode the image data to remove redundancies in the information to be transmitted. While the pixel data is usually arranged in pixel blocks, the blocks can be arranged in one or more groups of N×M blocks called tiles. The tiles avoid the need to send header information on a tile-by-tile or block-by-block basis, and simplifies parallel processing of the tiles. Bits from respective tiles may then be reformatted to recreate bits according to a raster-scan direction. This enables the decoder to receive the bits in a regular raster-scan format, but also have the ability to decode the tiles once the bits are reformatted. By partitioning an image into tiles of size N×M, it is possible to further exploit the intra-frame correspondence of images in a vertical direction as well as horizontal direction since the tiles need not destroy as many dependencies between blocks in a tile as if the blocks where organized in slices or slice groups.

摘要翻译： 在视频编码中，通常对图像数据进行编码以消除要发送的信息中的冗余。 虽然像素数据通常以像素块排列，但块可以被布置在称为瓦片的N×M块的一组或多组中。 瓦片避免了在逐个瓦片或逐块的基础上发送头信息的需要，并且简化了瓦片的并行处理。 然后可以将来自各个瓦片的位重新格式化，以根据光栅扫描方向再现位。 这使得解码器能够以规则的光栅扫描格式接收这些位，但是一旦重新格式化位，也可以解码瓦片。 通过将图像分割成尺寸为N×M的图块，可以进一步利用垂直方向和水平方向上的图像的帧内对应，因为图块不需要破坏瓦片中的块之间的依赖关系，如同 在片或片组中组织的块。

公开(公告)号：US20120001999A1

公开(公告)日：2012-01-05

申请号：US12829176

申请日：2010-07-01

申请人： Jochen Christof SCHIRDEWAHN ,  Simen Andresen

发明人： Jochen Christof SCHIRDEWAHN ,  Simen Andresen

IPC分类号： H04N7/15

CPC分类号： H04N7/142

摘要： A videoconferencing terminal and method use a display and camera that are adaptable depending on the mode of operation: videoconference mode, or document camera mode. The camera is pivotally mounted on the display, and is pivotally positionable within different pivot ranges according to the pivot angle with respect to a surface on which the display is positioned. When the camera is rotated beyond a predetermined non-zero angle relative to a vertical plane, the mode of operation automatically switches to a document pick-up mode of operation. In the document pick-up mode, the image of the document is flipped so as to be viewed by users at both endpoints of a videoconference call. Also, the camera is set to maximum zoom and focus adjusted to a predetermined distance so as to make for a clean image capture of the document. Also, the camera provides for keystone correction due to the lens not being co-planer with the document.

摘要翻译： 视频会议终端和方法使用根据操作模式适应的显示器和相机：视频会议模式或文档相机模式。 相机可枢转地安装在显示器上，并且根据相对于显示器所在的表面的枢转角度可枢转地定位在不同的枢转范围内。 当相机相对于垂直平面旋转超过预定的非零角度时，操作模式自动切换到文档拾取操作模式。 在文档拾取模式中，翻转文档的图像，以便在视频会议呼叫的两个端点处由用户观看。 此外，相机被设置为将最大变焦和焦点调整到预定距离，以便使文档的干净的图像捕获。 此外，由于镜头不与文档共同配置，摄像机提供梯形失真校正。

公开(公告)号：US20110310212A1

公开(公告)日：2011-12-22

申请号：US13161173

申请日：2011-06-15

申请人： Axel Dahl

发明人： Axel Dahl

IPC分类号： H04N7/14

CPC分类号： H04L29/12094 ,  H04L29/12783 ,  H04L61/1529 ,  H04L61/35 ,  H04L63/08

摘要： A system and method allowing users of video call endpoints to register their video call addresses in a local, regional and/or global directory, where the directory is configured to validate whether the video call address is a valid accessible address and that the user registering the video call number actually has physical access to the a video call device using the video call address.

摘要翻译： 允许视频呼叫端点的用户在本地，区域和/或全局目录中注册其视频呼叫地址的系统和方法，其中目录被配置为验证视频呼叫地址是否是有效的可访问地址，并且用户注册 视频通话号码实际上使用视频通话地址对视频通话设备进行物理访问。

公开(公告)号：US20110176687A1

公开(公告)日：2011-07-21

申请号：US13008651

申请日：2011-01-18

申请人： Oystein BIRKENES

发明人： Oystein BIRKENES

IPC分类号： H04B3/20

CPC分类号： H04M9/085

摘要： A new acoustic echo suppressor and method for acoustic echo suppression is described herein. Exemplary embodiments of the acoustic echo suppressor use one linear regression model for each subband. The linear regression model for each subband may operate on the squared magnitude of the input samples as well as corresponding cross-products. In this way, accurate and robust estimates of the echo signal in each subband can be obtained, thereby providing good echo reduction while keeping the signal distortion low

摘要翻译： 本文描述了用于声学回声抑制的新的声学回声抑制器和方法。 声学回波抑制器的示例性实施例对每个子带使用一个线性回归模型。 每个子带的线性回归模型可以对输入样本的平方幅度以及相应的交叉乘积进行操作。 以这种方式，可以获得每个子带中的回波信号的精确和鲁棒的估计，从而提供良好的回波减少，同时保持信号失真低

公开(公告)号：US20110141222A1

公开(公告)日：2011-06-16

申请号：US12968418

申请日：2010-12-15

申请人： Håvard HOELSÆTER

发明人： Håvard HOELSÆTER

IPC分类号： H04N7/15

CPC分类号： H04N7/152 ,  H04N7/18

摘要： A method including: obtaining a sequence of pictures from a camera associated with a video conferencing endpoint; determining a presence of a target point coinciding with an optical source within a field of view of the camera, wherein the optical source emits pulses of electromagnetic radiation at a rate that causes the camera to capture some frames with a pulse of electromagnetic radiation from the optical source and some frames without the pulse of electromagnetic radiation from the optical source; determining a location of the target point within one or more of the pictures by comparing a first frame from the camera that includes the pulse of electromagnetic radiation from the optical source and a second frame from the camera that does not include the pulse of electromagnetic radiation from the optical source; moving the camera so that a center of one or more subsequent pictures obtained by the camera coincides with the target point; and zooming the camera until receipt of an instruction to stop zooming is received, or until maximal zoom is achieved.

摘要翻译： 一种方法，包括：从与视频会议端点相关联的摄像机获得图像序列; 确定在相机视野内与光源重合的目标点的存在，其中光源以使得相机利用来自光学器件的电磁辐射的脉冲捕获一些帧的速率发射电磁辐射的脉冲 源和一些没有来自光源的电磁辐射脉冲的帧; 通过比较包括来自光源的电磁辐射脉冲的相机的第一帧和不包括电磁辐射脉冲的第二帧来确定一个或多个图像内的目标点的位置， 光源; 移动相机使得由相机获得的一个或多个后续图片的中心与目标点重合; 并且放大相机直到接收到停止缩放的指令为止，或者直到达到最大变焦。

公开(公告)号：US07932920B2

公开(公告)日：2011-04-26

申请号：US11378978

申请日：2006-03-17

申请人： Tom Erik Lia ,  Bjorn Aalerud ,  Geir Scott Nilsen

发明人： Tom Erik Lia ,  Bjorn Aalerud ,  Geir Scott Nilsen

IPC分类号： H04N7/14

CPC分类号： H04N7/147 ,  H04N7/148 ,  H04N7/152

摘要： A method and apparatus for conferencing dynamically determines conference parameters such as image layout, image resolution and bandwidth. The conference parameters are dynamically determined based on the number of participants or video sources or both that currently connect to the conference. Video signals received from connected sites are processed to provide a composite video signal according to defined conference parameters and the composite video signal is transmitted to the connected sites. Upon one or more other sites connecting to the conference or one or more of the connected sites disconnecting from the conference or both, such that the number of sites or sources currently connected in the conference changes, one or more conference parameters is redefined. The received video signals are processed according to the redefined conference parameters to provide a second composite video signal that is transmitted to the connected sites. The conference parameters include composite image layout, image resolution, and conference bandwidth rate.

摘要翻译： 用于会议的方法和装置动态地确定诸如图像布局，图像分辨率和带宽的会议参数。 会议参数根据当前连接到会议的参与者或视频源的数量或两者动态地确定。 根据定义的会议参数处理从连接站点接收的视频信号以提供复合视频信号，并将复合视频信号传输到所连接的站点。 在连接到会议的一个或多个其他站点或与会议或两者连接的一个或多个连接站点中，使得当前在会议中连接的站点或源的数量改变时，重新定义一个或多个会议参数。 接收的视频信号根据重新定义的会议参数进行处理，以提供传输到连接站点的第二复合视频信号。 会议参数包括复合图像布局，图像分辨率和会议带宽速率。

公开(公告)号：US07856112B2

公开(公告)日：2010-12-21

申请号：US11239042

申请日：2005-09-30

申请人： Trygve Frederik Marton ,  Johan Ludvig Nielsen ,  Petter Muren

发明人： Trygve Frederik Marton ,  Johan Ludvig Nielsen ,  Petter Muren

IPC分类号： H04R9/08

CPC分类号： H04R27/00

摘要： The present invention discloses an inventive microphone assembly for desktop communication systems. It utilises the advantages of placing the microphone in a desktop conferencing system as close as possible to the tabletop surface, without exposing the microphone for unfavourable mechanical or acoustic influence. This is achieved by building it into the footing in front of system, in a mechanically controlled and robust way. In this way, the high frequency response can be controlled to optimise sound quality, and at the same time the microphone assembly can be configured as a flexible unit that easily can be re-used in other systems.

摘要翻译： 本发明公开了一种用于桌面通信系统的发明的麦克风组件。 它利用将麦克风放置在桌面会议系统中尽可能靠近台面的优点，而不会使麦克风暴露于不利的机械或声学影响。 这是通过将其建立在系统前面的基础上，以机械控制和鲁棒的方式实现的。 以这种方式，可以控制高频响应以优化声音质量，并且同时麦克风组件可被配置为容易在其他系统中重新使用的灵活单元。

公开(公告)号：USD624514S1

公开(公告)日：2010-09-28

申请号：US29313109

申请日：2008-12-08

申请人： Maren Anne Roed ,  Stig Myler ,  Friederike Faller ,  Torkel Steffen Mellingen

设计人： Maren Anne Roed ,  Stig Myler ,  Friederike Faller ,  Torkel Steffen Mellingen

公开(公告)号：US20100231556A1

公开(公告)日：2010-09-16

申请号：US12721149

申请日：2010-03-10

申请人： Anthony Mines ,  Stephen Bretherton

发明人： Anthony Mines ,  Stephen Bretherton

IPC分类号： G06F3/041

CPC分类号： H04N7/15 ,  G06F3/0418

摘要： A device, system, and computer-readable medium for an interactive whiteboard including an interface which receives a first control signal from a touch-sensitive display surface and a second control signal from a codec, the first control signal identifying a position on the touch-sensitive display surface, and the second control signal identifying a codec setting of the codec; and a processor which calculates, based on the first control signal and the second control signal, a corresponding position on a display screen of a computing device to the position on the touch-sensitive display surface, and which sends the corresponding position to the computing device.

摘要翻译： 一种用于交互式白板的设备，系统和计算机可读介质，包括从触敏显示表面接收第一控制信号的接口和来自编解码器的第二控制信号，所述第一控制信号标识所述触控显示器上的位置， 敏感显示面，第二控制信号识别编解码器的编解码器设置; 以及处理器，其基于所述第一控制信号和所述第二控制信号，将计算设备的显示屏幕上的对应位置计算到所述触敏显示表面上的位置，并将相应的位置发送到所述计算设备 。

公开(公告)号：US20090323827A1

公开(公告)日：2009-12-31

申请号：US12374125

申请日：2007-07-13

申请人： Gisle Bjontegaard

发明人： Gisle Bjontegaard

IPC分类号： H04N7/68 ,  H04N7/15

CPC分类号： G06T5/002 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/20012

摘要： A pre-processing of video data before coding and transmission, for a method for noise reduction in High-Density video images. A low implementation-complex filter filters raw pixel data output of a video camera with a low pass property for both spatial and temporal noise and the filter is adapted based on the high frequency content of the picture, leaving most of the image content unaffected by the filtering process.

摘要翻译： 在编码和传输之前的视频数据的预处理，用于高密度视频图像中的降噪方法。 低实施复杂滤波器对具有空间和时间噪声的低通特性的摄像机的原始像素数据输出进行滤波，并且基于图像的高频内容来适配滤波器，使大部分图像内容不受 过滤过程。