公开(公告)号：WO2005002236A1

公开(公告)日：2005-01-06

申请号：PCT/NO2004/000118

申请日：2004-04-27

Applicant: TANDBERG TELECOM AS ,  BJØNTEGAARD, Gisle

Inventor： BJØNTEGAARD, Gisle

IPC: H04N7/50

CPC classification number: H04N19/14 ,  H04N19/132 ,  H04N19/176 ,  H04N19/61

Abstract: The present invention applies to video coding and discloses a method for detecting blocks that are to be indicated as skipped at an earlier stage of the encoding process, than would be the case with a straight forward implementation of the ITU H.263 and H.264 standards. This is provided by transforming the 4x4 blocks in the macro blocks having a skip vector of zero with a binary-transform function. The blocks having values of the four uppermost left binary-transform coefficients less than a predefined threshold, is defined as skipped. Thus, no further costly computational demanding transformation or quantization of these blocks will be necessary.

Abstract translation: 本发明适用于视频编码，并且公开了一种用于在编码处理的较早阶段检测要被指示为跳过的块的方法，而不是直接执行ITU H.263和H.264的情况 标准。 这是通过用二进制变换函数变换具有零跳跃向量的宏块中的4×4块来提供的。 具有小于预定阈值的四个最上面的二进制变换系数的值的块被定义为跳过。 因此，不需要进一步昂贵的计算要求的这些块的变换或量化。

公开(公告)号：WO2004110064A1

公开(公告)日：2004-12-16

申请号：PCT/NO2004/000077

申请日：2004-03-19

Applicant: TANDBERG TELECOM AS ,  KARLSEN, Per, Arne ,  NILSEN, Geir, Scott ,  LORENTZEN, Nils, Henrik

Inventor： KARLSEN, Per, Arne ,  NILSEN, Geir, Scott ,  LORENTZEN, Nils, Henrik

IPC: H04N7/15

CPC classification number: H04L65/1009 ,  H04L29/06027 ,  H04L41/0896 ,  H04L65/103 ,  H04L65/104

Abstract: The present invention discloses a method and a gateway for down speeding the data rate at the circuit switched side of a call being translated in the gateway if the packet switched side do not have sufficient bandwidth capabilities for matching the circuit switched data rate. According to one embodiment of the present invention, the gateway will compare the bandwidth of the H.320 and the H.323 side of a call after establishing the connection, i.e preferably directly after signalling has been completed. Then, if the H.323 side of the call is connected at a lower rate than the H.320 side e.g. because of insufficient capabilities of the H.323 endpoint, the gateway will initiate a down speeding procedure at the H.320 side e.g. by means of the features of the BONDING TM technique. The down speeding procedure disconnects a number of B-channels of the H.320 connection to make the call rate equal or lower than the call rate of the H.323 side of the call.

Abstract translation: 本发明公开了一种方法和网关，用于在分组交换侧没有足够的带宽能力以匹配电路交换数据速率的情况下，降低在网关中转换的呼叫的电路交换侧的数据速率。 根据本发明的一个实施例，网关将在建立连接之后比较呼叫的H.320和H.323侧的带宽，即最好在信令完成之后直接进行比较。 然后，如果呼叫的H.323侧以比H.320侧更低的速率连接，例如 由于H.323端点的能力不足，网关将启动H.320端的下行超速程序，例如 借助于BONDING TM技术的特点。 降速过程断开H.320连接的多个B信道，使呼叫速率等于或低于呼叫的H.323侧的呼叫速率。

公开(公告)号：WO2004105399A1

公开(公告)日：2004-12-02

申请号：PCT/NO2004/000121

申请日：2004-04-29

Applicant: TANDBERG TELECOM AS ,  JOHANSEN, Tom-Ivar ,  BJØNTEGAARD, Gisle

Inventor： JOHANSEN, Tom-Ivar ,  BJØNTEGAARD, Gisle

IPC: H04N7/50

CPC classification number: H04N19/85 ,  H04N19/186 ,  H04N19/593 ,  H04N19/60

Abstract: The invention is related to handling various picture resolution in an extended version of the compression standard H.264/AVC or other similar standards. The present invention provides an extension of the standard to include formats like the above-described 4:2:2 and 4:4:4. The method is based on the way chrominance is already treated in H.264/AVC.

Abstract translation: 本发明涉及在压缩标准H.264 / AVC或其它类似标准的扩展版本中处理各种图像分辨率。 本发明提供了标准的扩展，以包括如上述4：2：2和4：4：4的格式。 该方法基于H.264 / AVC中色度已被处理的方式。

公开(公告)号：WO2011149359A1

公开(公告)日：2011-12-01

申请号：PCT/NO2011/000158

申请日：2011-05-25

Applicant: TANDBERG TELECOM AS ,  BERGER, Espen ,  BÜHLER, Pascal ,  KROKNES, Jan, Asle

Inventor： BERGER, Espen ,  BÜHLER, Pascal ,  KROKNES, Jan, Asle

IPC: H04L29/06 ,  H04N7/15

CPC classification number: H04N7/152 ,  H04L65/403 ,  H04L65/605

Abstract: A system and a method for exchanging audio, video, and data information between at least two clients in a communication network supported by a central unit. The method comprises the steps of connecting the at least two clients to the central unit using a call control protocol, the call control protocol negotiating video formats and connection information for sending and receiving media streams; transmitting information from a first client to the central unit, the information comprising meta-data describing different media streams the first client is capable of transmitting; transmitting the information received from the first client to the at least one other client; on receiving the information on the different media streams the first client is capable of transmitting, the at least one other client is deciding on which of the available media streams from the first client the at least one other client will subscribe to; transmitting a subscribe message from the at least one other client to the central unit, subscribing to at least one available media stream from the first client; on receiving at least one subscribe message from the at least one other client, the central unit transmits a message requesting the first client to start transmitting media streams subscribed to by the at least one other client; transmitting the media streams subscribed to by the at least one other client from the first client to the central unit; and transmitting the media streams subscribed to by the at least one other client from the central unit to the at least one other client.

Abstract translation: 一种用于在由中央单元支持的通信网络中的至少两个客户端之间交换音频，视频和数据信息的系统和方法。 所述方法包括以下步骤：使用呼叫控制协议将所述至少两个客户端连接到所述中央单元，所述呼叫控制协议协商视频格式以及用于发送和接收媒体流的连接信息; 将信息从第一客户端发送到中央单元，所述信息包括描述第一客户端能够发送的不同媒体流的元数据; 将从所述第一客户端接收到的信息发送到所述至少一个其他客户端; 在接收到第一客户端能够发送的不同媒体流上的信息时，至少一个其他客户端决定来自第一客户端的至少一个其他客户端将订阅哪些可用媒体流; 将来自所述至少一个其他客户端的订阅消息发送到所述中央单元，订阅来自所述第一客户端的至少一个可用媒体流; 在从所述至少一个其他客户端接收至少一个订阅消息时，所述中央单元发送请求所述第一客户端开始发送由所述至少一个其他客户端订阅的媒体流的消息; 将由所述至少一个其他客户端预订的媒体流从所述第一客户端发送到所述中央单元; 以及将由所述至少一个其他客户端预订的媒体流从所述中央单元发送到所述至少一个其他客户端。

公开(公告)号：WO2011046446A1

公开(公告)日：2011-04-21

申请号：PCT/NO2010/000361

申请日：2010-10-13

Applicant: TANDBERG TELECOM AS ,  BJØNTEGAARD, Gisle

Inventor： BJØNTEGAARD, Gisle

IPC: H04N7/50

CPC classification number: H04N19/18 ,  H04N19/129 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61

Abstract: A method for scanning macroblocks in video compression and selecting alternatively sized large macroblocks accordingly. The scanning pattern is divided into scanning fragments with a size corresponding to different possible large macroblocks. This allows for varying the size of the selected macroblocks, based on minimizing distortion and/or bit rate consumption.

Abstract translation: 一种用于扫描视频压缩中的宏块的方法，并相应地选择大小的大宏块。 扫描图案被分成具有对应于不同可能的大宏块的大小的扫描片段。 这允许基于最小化失真和/或比特率消耗来改变所选宏块的大小。

公开(公告)号：WO2010033036A1

公开(公告)日：2010-03-25

申请号：PCT/NO2009/000323

申请日：2009-09-17

Applicant: TANDBERG TELECOM AS ,  MELLINGEN, Torkel, Steffen ,  SHAW, Eamonn ,  LØVHAUGEN, Norma

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: The invention relates to a control system for a local telepresence videoconferencing system, wherein the telepresence system comprises cameras and display screens, comprising: a graphical user interface comprising a left display icon, a center display icon, a right display icon, and contact field icons 8, wherein each of said contact field icons 8 is associated with a remote videoconference system, touch screen control display for displaying and manipulating the graphical user interface, and where said graphical user interface permits a user to pre-arrange respective assignments of display screens to one or more remote videoconference systems prior to establishing a connection with the one or more remote video conference systems and present an image on said touch screen control display of said respective assignments on said display screens prior to establishing said connection. The invention also relates to a method for establishing a video conference call between a local telepresence videoconferencing system and one or more remote video conferencing system.

Abstract translation: 本发明涉及一种用于本地远程呈现视频会议系统的控制系统，其中远程呈现系统包括相机和显示屏幕，包括：图形用户界面，包括左显示图标，中心显示图标，右显示图标和联系人字段图标 如图8所示，其中每个所述接触字段图标8与远程视频会议系统相关联，用于显示和操纵图形用户界面的触摸屏控制显示器，并且其中所述图形用户界面允许用户预先布置显示屏幕的相应分配 一个或多个远程视频会议系统，在与所述一个或多个远程视频会议系统建立连接之前，并且在建立所述连接之前，在所述显示屏幕上的所述触摸屏上显示所述各个分配的图像。 本发明还涉及一种用于在本地远程呈现视频会议系统和一个或多个远程视频会议系统之间建立视频电话会议的方法。

公开(公告)号：WO2010002266A1

公开(公告)日：2010-01-07

申请号：PCT/NO2009/000237

申请日：2009-06-25

Applicant: TANDBERG TELECOM AS ,  MARTON, Trygve, Frederik

Inventor： MARTON, Trygve, Frederik

IPC: H03M11/10 ,  B41J5/44 ,  G10L21/02

CPC classification number: G10L21/0208 ,  H04N7/147

Abstract: A method and a device for reducing keyboard noise in a conferencing equipment which includes a microphone and a keyboard. The method comprises steps of providing an audio signal originating from said microphone; detecting an operation of said keyboard; providing a pre-stored estimate of a keyboard audio noise resulting from said operation of said keyboard; and calculating a noise reduced output signal based on said estimate of said keyboard audio noise and said audio signal. The calculating of the noise reduced output signal may include spectral subtraction techniques. Comfort noise may also be generated and added.

Abstract translation: 一种用于在包括麦克风和键盘的会议设备中减少键盘噪声的方法和装置。 该方法包括提供源自所述麦克风的音频信号的步骤; 检测所述键盘的操作; 提供对所述键盘的所述操作产生的键盘音频噪声的预先存储的估计; 以及基于所述键盘音频噪声和所述音频信号的所述估计来计算降噪输出信号。 降噪输出信号的计算可能包括频谱减法技术。 也可能产生和添加舒适噪音。

公开(公告)号：WO2009145640A1

公开(公告)日：2009-12-03

申请号：PCT/NO2009/000204

申请日：2009-05-29

Applicant: TANDBERG TELECOM AS ,  HUSØY, Per, Ove

Inventor： HUSØY, Per, Ove

IPC: H04N7/15 ,  H04L12/18

CPC classification number: H04N7/15 ,  H04L12/1827 ,  H04N7/173 ,  H04N21/440272 ,  H04N21/44218 ,  H04N21/4788

Abstract: A method for displaying an image on a display, particularly in a video conferencing system, comprising the following steps: providing a primary image; providing an observation angle of a viewer with respect to said display; modifying the primary image as a function of said observation angle, resulting in a modified image; and displaying said modified image on said display. The modifying of the image may include a horizontal scaling of the primary image, in particular extending the primary image with an extension factor which is larger for higher observation angles than for smaller observation angles, e.g. in inverse proportion to a cosine function of the observation angle. If a multi-view display is used, the primary image and the modified image may be displayed in different directions, i.e. to viewers with different viewing angles with respect to the display.

Abstract translation: 一种用于在显示器上显示图像的方法，特别是在视频会议系统中，包括以下步骤：提供主图像; 提供观看者相对于所述显示器的观察角度; 作为所述观察角度的函数修改主图像，导致修改的图像; 以及在所述显示器上显示所述修改的图像。 图像的修改可以包括主图像的水平缩放，特别是使用对于较高观察角度较大的扩展因子来扩展主图像，而不是较小的观察角度。 与观察角的余弦函数成反比。 如果使用多视图显示，则可以在不同的方向上显示主图像和修改图像，即相对于显示器具有不同视角的观看者。

公开(公告)号：WO2009082233A1

公开(公告)日：2009-07-02

申请号：PCT/NO2008/000341

申请日：2008-09-24

Applicant: TANDBERG TELECOM AS ,  ENDSTAD, Gisle ,  GRAVERMOEN, Tore ,  NIELSEN, Johan, Ludvig

Inventor： ENDSTAD, Gisle ,  GRAVERMOEN, Tore ,  NIELSEN, Johan, Ludvig

IPC: H04R1/38 ,  H04M1/62

CPC classification number: H04R1/342 ,  H04R19/016

Abstract: The present invention discloses an inventive microphone assembly for desktop communication systems. It utilises the advantages of directional microphones in a desktop conferencing system 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. The microphone assembly according to the present invention maximize microphone sensitivity in the direction of a near end user while simultaneously minimize microphone sensitivity in the direc-tion of the loudspeaker.

Abstract translation: 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。 它在桌面会议系统中利用定向麦克风的优点，而不会对麦克风造成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。 根据本发明的麦克风组件使近端用户的方向上的麦克风灵敏度最大化，同时使扬声器方向上的麦克风灵敏度最小化。

公开(公告)号：WO2009011592A1

公开(公告)日：2009-01-22

申请号：PCT/NO2008/000249

申请日：2008-06-30

Applicant: TANDBERG TELECOM AS ,  ENSTAD, Gisle ,  KORNELIUSSEN, Jan, Tore ,  HUSØY, Per, Ove

Inventor： ENSTAD, Gisle ,  KORNELIUSSEN, Jan, Tore ,  HUSØY, Per, Ove

IPC: H04N7/15

CPC classification number: H04N5/232 ,  H04N5/23219 ,  H04N5/23296 ,  H04N7/142 ,  H04N7/15 ,  H04N21/4223 ,  H04N21/4788 ,  H04N2005/44521

Abstract: The present invention uses video detection techniques to detect participants and their respective locations in video frames captured by the camera, and based on the location and sizes of said detected participants, automatically determine and use the optimal camera orientation and zoom for capturing the best view of all the participants.

Abstract translation: 本发明使用视频检测技术来检测由相机拍摄的视频帧中的参与者及其各自的位置，并且基于所检测到的参与者的位置和大小，自动确定并使用最佳照相机方向和缩放以捕获最佳视图 所有参与者。