公开(公告)号：WO2004091214A1

公开(公告)日：2004-10-21

申请号：PCT/NO2004/000067

申请日：2004-03-12

Applicant: TANDBERG TELECOM AS ,  KJESBU, Snorre ,  LUNDE, Finn Helge ,  MUREN, Petter ,  MARTON, Trygve Frederik

Inventor： KJESBU, Snorre ,  LUNDE, Finn Helge ,  MUREN, Petter ,  MARTON, Trygve Frederik

IPC: H04N7/14

CPC classification number: H04N7/144

Abstract: The present invention discloses an arrangement and a method of a videoconferencing end-point providing eye contact between users at different sites. The invention allows for placing the conference camera in the light beam of a projector apparatus without degrading the camera-captured view by the projector light. This is provided by generating a black spot in the light beam covering the camera lens, and by adjusting the position and/or size of the black spot according to a camera position detector, which may be the camera itself or one or more light sensors around and close to the camera lens.

Abstract translation: 本发明公开了一种视频会议端点在不同站点的用户之间提供眼睛接触的布置和方法。 本发明允许将投影仪设备的光束放置在投影仪设备的光束中，而不会因投影仪光而使照相机拍摄的视野降低。 这是通过在覆盖照相机镜头的光束中产生黑点，并且通过根据照相机位置检测器调整黑点的位置和/或尺寸来提供的，摄像机位置检测器可以是照相机本身或一个或多个光传感器 并靠近相机镜头。

公开(公告)号：WO2004049730A1

公开(公告)日：2004-06-10

申请号：PCT/NO2003/000388

申请日：2003-11-20

Applicant: TANDBERG TELECOM AS ,  BJØNTEGAARD, Gisle

Inventor： BJØNTEGAARD, Gisle

IPC: H04N7/50

CPC classification number: H04N19/57 ,  H04N19/52 ,  H04N19/56

Abstract: The present invention discloses a method for improved prediction of the motion vector of a pixel block in a video picture that is to be coded. According to a preferred embodiment of the present invention, the actual motion vectors of two adjacent blocks close to the uppermost left corner of the block are selected as candidates for the prediction. One additional block, also adjacent to the block, is selected to decide which of the motion vectors to be used as the prediction. The vector difference to the motion vector of the decision block is decisive for the final selection.

Abstract translation: 本发明公开了一种改进预测要编码的视频图像中的像素块的运动矢量的方法。 根据本发明的优选实施例，选择靠近块的最左上角的两个相邻块的实际运动矢量作为预测的候选。 选择与块相邻的一个附加块以决定要用作预测的哪些运动矢量。 与决策块的运动矢量的矢量差异对于最终选择是决定性的。

公开(公告)号：WO2004043074A1

公开(公告)日：2004-05-21

申请号：PCT/NO2003/000371

申请日：2003-11-04

Applicant: TANDBERG TELECOM AS ,  FULDSETH, Arild ,  KALJORD, Andreas ,  JOHANSEN, Tom-Ivar ,  MIDTSKOGEN, Steinar

Inventor： FULDSETH, Arild ,  KALJORD, Andreas ,  JOHANSEN, Tom-Ivar ,  MIDTSKOGEN, Steinar

IPC: H04N7/68

CPC classification number: H04N7/15 ,  H04L9/083 ,  H04L9/0841 ,  H04L9/12 ,  H04L63/0428 ,  H04L2209/30 ,  H04L2209/56 ,  H04L2209/80 ,  H04L2463/062 ,  H04N19/61 ,  H04N19/895

Abstract: A system, apparatus, method and computer program product for detecting and correcting packet losses that adversely affect video quality. This packet loss feature may be employed as part of the secure video conference system, method and computer program product, or be employed in a non-secure system, method and computer program product.

Abstract translation: 一种用于检测和校正对视频质量有不利影响的分组丢失的系统，装置，方法和计算机程序产品。 该分组丢失特征可以被用作安全视频会议系统，方法和计算机程序产品的一部分，或者可以用在非安全系统，方法和计算机程序产品中。

公开(公告)号：WO2004043068A1

公开(公告)日：2004-05-21

申请号：PCT/NO2003/000372

申请日：2003-11-04

Applicant: TANDBERG TELECOM AS ,  LEPENNEC, Thierry

Inventor： LEPENNEC, Thierry

IPC: H04N7/15

CPC classification number: H04N7/15 ,  H04L9/083 ,  H04L9/0841 ,  H04L9/12 ,  H04L63/0428 ,  H04L2209/30 ,  H04L2209/56 ,  H04L2209/80 ,  H04L2463/062 ,  H04N19/61 ,  H04N19/895

Abstract: A system, apparatus, method, and computer program product for establishing secure videoconferences between multiple nodes communicating via two or more transport protocols in which at least one encryption protocol is used.

Abstract translation: 一种用于在通过使用至少一个加密协议的两个或多个传输协议进行通信的多个节点之间建立安全视频会议的系统，装置，方法和计算机程序产品。

公开(公告)号：EP2047423B1

公开(公告)日：2012-01-04

申请号：EP07793922.1

申请日：2007-07-13

Applicant: Tandberg Telecom AS

Inventor： BJØNTEGAARD, Gisle

IPC: G06T5/00 ,  G06T5/50

CPC classification number: G06T5/002 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/20012

Abstract: The present invention is related to pre-processing of video data before coding and transmission. In particular, the present invention discloses a method for noise reduction in High-Density video images. This is realized by a low implementation-complex filter filtering the raw pixel data output of a video camera with low pass property for both spatial and temporal noise combined with an adaptation of the filter based on the high frequency content of the picture, leaving most of the image content unaffected by the filtering process.

公开(公告)号：EP2384581A1

公开(公告)日：2011-11-09

申请号：EP09836441.7

申请日：2009-12-28

Applicant: Tandberg Telecom AS

Inventor： ENDRESEN, Lars, Petter

IPC: H04N7/26 ,  H04N7/50

CPC classification number: H04N19/93 ,  H04N19/129 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60

Abstract: A process for calculating run-and-level representations of quantized transform coefficients includes packing each quantized transform coefficients in a value interval (Max, Min) by setting all quantized transform coefficients greater than Max equal to Max, and all quantized transform coefficients less than Min equal to Min; reordering the quantized transform coefficients resulting in an array C of reordered quantized transform coefficients; masking C by generating an array M containing ones in positions corresponding to positions of C having non-zero values, and zeros in positions corresponding to positions of C having zero values; and for each position containing a one in M, generating a run and a level representation by setting the level value equal to an occurring value in a corresponding position C, and setting the run value equal to the number of proceeding positions relative to a current position in M since a previous occurrence of one in M.

公开(公告)号：EP2382779A1

公开(公告)日：2011-11-02

申请号：EP09835319.6

申请日：2009-12-15

Applicant: Tandberg Telecom AS

Inventor： PEPPERELL, Andrew

IPC: H04N7/15 ,  H04N5/265

CPC classification number: H04N7/152

Abstract: Processing images in conference between a plurality of video conferencing terminal. The method includes providing properties of terminals, defining a number of groups based on the properties of the terminals, then determining an ordered list of the a number of groups, and determining a pane layout for displaying images from the terminals. The pane layout is determined based on the provided properties of the terminal the pane layout is displayed on and the properties of the other terminals in the conference. Then, mapping the ordered list of the number of groups to the respective determined pane layout, and providing at least one composite image stream to each of the terminals according to the selected pane layout and mapping of the a number of groups. Different types of telepresence endpoints, (e.g. different manufacturers, numbers of screens/cameras, etc.) can thus interoperate well in the same video conference.

公开(公告)号：EP2380349A1

公开(公告)日：2011-10-26

申请号：EP09833677.9

申请日：2009-11-27

Applicant: Tandberg Telecom AS

Inventor： CATCHPOLE, Jason ,  COCKERTON, Craig

IPC: H04N7/15 ,  G06K9/62

CPC classification number: G06K9/00288 ,  G06F17/30793 ,  G06F17/30817 ,  G06K2009/00328

Abstract: The present invention provides a system and a method making names of participants in an archived conference or presentation searchable after being stored in the archive server. According to the invention, one or more media streams coded according to H.323 or SIP are transmitted to a streaming/archiving server for converting multimedia content into a standard streaming format. A face recognition unit analyzes the video part of the multimedia content to detect faces and identify the detected faces. The face recognition unit utilizes protocol information and other video conferencing recourses to greatly reduce the search space during face recognition process, hence reducing computational cost and improving robustness of recognitions.

公开(公告)号：EP2380130A1

公开(公告)日：2011-10-26

申请号：EP09833682.9

申请日：2009-12-17

Applicant: Tandberg Telecom AS

Inventor： ENDRESEN, Lars, Petter

IPC: G06T1/60 ,  G09G5/393 ,  H04N5/14

CPC classification number: H04N19/117 ,  H04N19/182 ,  H04N19/59 ,  H04N19/61 ,  H04N19/80

Abstract: A method for calculating pixel values of interpolated pixel positions located between integer pixel positions in frames of a video picture by a predefined filter operation, the method including: storing the pixel values of the integer pixel position; determining to which of a number of predefined resolution formats the video picture is adapted; defining a fixed width (W) and fixed height value (H) for the frames corresponding to a resolution format determined by the determining; loading a first set of memory addresses for the memory of the video processing apparatus corresponding to a plurality of the pixel values of integer pixel positions; and executing a filter operation on the plurality of the pixel values of integer pixel positions and calculating a plurality of the pixel values of the interpolated pixel positions.

Abstract translation: 一种用于通过预定义的滤波操作来计算位于视频画面的帧中的整数像素位置之间的插值像素位置的像素值的方法，所述方法包括：存储整数像素位置的像素值; 确定所述视频图片适应于多个预定义分辨率格式中的哪一个; 为对应于由所述确定确定的分辨率格式的帧定义固定宽度（W）和固定高度值（H） 将对应于整数像素位置的多个像素值的视频处理装置的存储器的第一组存储器地址加载; 以及对整数像素位置的多个像素值执行滤波操作，并计算内插像素位置的多个像素值。

公开(公告)号：EP2338277A1

公开(公告)日：2011-06-29

申请号：EP09814834.9

申请日：2009-09-17

Applicant: Tandberg Telecom AS

Inventor： MELLINGEN, Torkel, Steffen ,  SHAW, Eamonn ,  LØVHAUGEN, Norma

IPC: H04N7/14 ,  H04N7/15 ,  G06F3/048 ,  G06T5/00

CPC classification number: H04N7/147 ,  G06F3/0486 ,  G06F3/04886 ,  H04N7/152

Abstract: A computer-implemented interface for a local telepresence video conferencing facility, pre-assigns displays at the local telepresence video conferencing facility to respective video images from remote telepresence video conference facilities such that respective video images from the remote telepresence video conference facilities will be displayed on corresponding displays at the local telepresence video conferencing facility once communications connections are made. A controller pre-assigns the displays according to control commands from a tactile input device prior to establishing the communication connections with the remote telepresence video conference facilities. A touchscreen display presents avatars of remote conference participants to illustrate pre-assignments of displays to particular remote telepresence video conference facilities prior to the communication connections being made.