公开(公告)号：US20070047624A1

公开(公告)日：2007-03-01

申请号：US11536532

申请日：2006-09-28

Applicant: ERIC ELIAS

Inventor： ERIC ELIAS

IPC: H04B1/00

CPC classification number: H04M11/06 ,  H04M11/066

Abstract: Systems, methods, and devices for mixed voice and spread spectrum data signaling with enhanced concealment of data are disclosed. Audible artifacts may be reduced or suppressed in order to improve the audible quality of the sound. The distortion to the audio may be kept just below perceptibility, yet the data contained within the modulated signal is recoverable on the receiving side. The recovery of the data is robust to the impairments imposed by the communication channel. The disclosed systems, methods, and devices may be implemented in audio conferencing or video conferencing. Various embodiments of the present disclosure provide a data and voice mixer, which includes an improved spread spectrum data hiding transmitter. The transmitter may comprise a spreading encoder, a Phase Shift Keying (PSK) modulator, and a notch filter. A pseudo random switching pattern may be applied to a plurality of chip sequence generators in order to reduce or suppress an undesirable audible artifact. The transmitter may further comprise a phase randomizer operable to rotate the phase of the output of the spreading encoder by a pseudo random increment of approximately 45 degrees.

Abstract translation: 公开了用于具有增强的数据隐藏的混合语音和扩频数据信令的系统，方法和设备。 可能减少或抑制声音伪像，以改善声音的可听见的质量。 对音频的失真可以保持在低于感知度，但是包含在调制信号中的数据在接收侧是可恢复的。 数据的恢复对于由通信信道施加的损伤是稳健的。 所公开的系统，方法和设备可以在音频会议或视频会议中实现。 本公开的各种实施例提供了一种数据和语音混合器，其包括改进的扩频数据隐藏发射机。 发射机可以包括扩频编码器，相移键控（PSK）调制器和陷波滤波器。 可以将伪随机切换模式应用于多个码片序列发生器，以便减少或抑制不期望的可听见的伪像。 发射机还可以包括相位随机化器，其可操作以使扩展编码器的输出的相位旋转约45度的伪随机增量。

公开(公告)号：US20070014360A1

公开(公告)日：2007-01-18

申请号：US11180899

申请日：2005-07-13

Applicant: Stephen Botzko ,  Ilan Yona ,  Moshe Elbaz ,  Michael Horowitz

Inventor： Stephen Botzko ,  Ilan Yona ,  Moshe Elbaz ,  Michael Horowitz

IPC: H04N11/02 ,  H04N11/04 ,  H04B1/66

CPC classification number: H04N21/4382 ,  H04N19/107 ,  H04N19/115 ,  H04N19/166 ,  H04N19/169 ,  H04N19/176 ,  H04N19/188 ,  H04N19/51 ,  H04N19/513 ,  H04N19/553 ,  H04N19/61 ,  H04N19/65 ,  H04N19/66 ,  H04N19/895 ,  H04N21/2383 ,  H04N21/64738 ,  H04N21/64769 ,  H04N21/64784

Abstract: Disclosed herein is a system and method for reconstruction video information lost as a result of transmission errors. The system and method have four aspects, including: (1) changing the bit and/or packet rate; (2) inserting redundant information into the video bitstream; (3) providing automatic refresh of certain regions of the video on a periodic basis; and (4) interleaving coded macroblocks into diversity groups for transmission to spatially spread the effect of lost packets. The image reconstruction may then take advantage of these three aspects to provide an enhanced result in the presence of transmission losses.

Abstract translation: 这里公开了一种用于重建由于传输错误而丢失的视频信息的系统和方法。 该系统和方法有四个方面，包括：（1）改变位和/或分组速率; （2）将冗余信息插入到视频比特流中; （3）周期性地提供视频的某些区域的自动刷新; 和（4）将编码的宏块交织为分集组以进行传输，从而空间扩展丢失分组的影响。 然后，图像重构可以利用这三个方面来提供传输损失的存在的增强结果。

公开(公告)号：US07162096B1

公开(公告)日：2007-01-09

申请号：US11175666

申请日：2005-07-06

Applicant: Michael Horowitz

Inventor： Michael Horowitz

IPC: G06K9/36 ,  G06K9/46

CPC classification number: H04N19/124 ,  H04N19/17 ,  H04N19/194 ,  H04N19/61

Abstract: The present invention allows higher quality video images to be transmitted without a concomitant increase in a total number of video data bits transmitted per frame. Quantization parameters are applied to coefficients of macroblocks within a given video frame. A lower value of the quantization parameter is applied near a central region of a video frame. This central region is referred to as a prime video region. Applying the lower quantization parameter to the prime video region has the effect of increasing the video data bit density within that area. Outside of the prime video region, the video data bit density per macroblock is decreased so as to have a zero net-gain in bit density over the entire video frame. Furthermore, there may be a plurality of prime video regions where quantization parameters are dynamically coded. In this case, the value of the quantization parameter will increase or decrease within a given prime video region based on a relative importance of a particular prime video region. Consequently, a quantization parameter matrix may vary depending on the video scene.

Abstract translation: 本发明允许传输更高质量的视频图像，而不伴随每帧传输的视频数据比特数的总和增加。 量化参数被应用于给定视频帧内的宏块的系数。 在视频帧的中心区域附近施加较低的量化参数值。 该中心区域被称为主要视频区域。 将较低量化参数应用于主视频区域具有增加该区域内的视频数据位密度的效果。 在主视频区域之外，每个宏块的视频数据比特密度减小，从而在整个视频帧上具有零比特密度的净增益。 此外，可以存在多个主要视频区域，其中量化参数被动态地编码。 在这种情况下，基于特定主要视频区域的相对重要性，量化参数的值将在给定的主视频区域内增加或减少。 因此，量化参数矩阵可以根据视频场景而变化。

公开(公告)号：US20060274195A1

公开(公告)日：2006-12-07

申请号：US11465352

申请日：2006-08-17

Applicant: Noam Eshkoli

Inventor： Noam Eshkoli

IPC: H04N11/20

CPC classification number: H04N7/152 ,  G06F3/1454 ,  G09G2340/0442 ,  H04N7/147

Abstract: A system and method is disclosed for composing a video layout having an aspect ratio of 16:9 from a plurality of video segments having an aspect ratio other than 16:9. For example, the plurality of video segments might have an aspect ratio of 4:3. To create a composite frame having an aspect ratio of about 16:9, the disclosed system scales each one of the segments and places each scaled segment in the layout in such a way that the composite layout has an aspect ratio of about 16:9.

Abstract translation: 公开了一种用于从具有不同于16:9的纵横比的多个视频段构成具有16:9的纵横比的视频布局的系统和方法。 例如，多个视频段可以具有4:3的纵横比。 为了创建具有约16:9的纵横比的复合框架，所公开的系统对每个段进行缩放，并且将每个缩放的段放置在布局中，使得复合布局具有约16:9的纵横比。

公开(公告)号：US07133062B2

公开(公告)日：2006-11-07

申请号：US10631667

申请日：2003-07-31

Applicant: Randy Castles ,  Martin Sexton ,  Alain Nimri

Inventor： Randy Castles ,  Martin Sexton ,  Alain Nimri

IPC: H04N7/14

CPC classification number: H04N21/4823 ,  H04N7/147 ,  H04N7/15 ,  H04N21/4223 ,  H04N21/4316 ,  H04N21/4622 ,  H04N21/47 ,  H04N21/4788 ,  H04N21/485 ,  H04N21/8146

Abstract: The Graphical User Interface (GUI) of a videoconference terminal is provided with user-selectable icons which are associated by the user with various video signals. Textual labels for the various video signals may also be provided. This information may be exchanged with the “far end” participant in the video conference. During the videoconference participants may then simply select an icon to dynamically switch video feeds without having to remember by number the particular camera or other video signal associated with a desired video feed.

Abstract translation: 视频会议终端的图形用户界面（GUI）被提供有由用户与各种视频信号相关联的用户可选择的图标。 也可以提供各种视频信号的文本标签。 该信息可以与视频会议中的“远端”参与者交换。 在视频会议期间，参与者可以简单地选择一个图标来动态地切换视频馈送，而不用记住特定的相机或与期望的视频馈送相关联的其他视频信号。

公开(公告)号：US07054933B2

公开(公告)日：2006-05-30

申请号：US09812971

申请日：2001-03-19

Applicant: Warren Edward Baxley ,  Jeffrey Charles Adams ,  Eric Jay Nylander ,  Douglas Earl Harbert

Inventor： Warren Edward Baxley ,  Jeffrey Charles Adams ,  Eric Jay Nylander ,  Douglas Earl Harbert

IPC: G06F15/173

CPC classification number: H04L65/4038 ,  H04L12/1818 ,  H04L12/1827 ,  H04L29/06 ,  H04L29/06027 ,  H04L41/142 ,  H04L41/147 ,  H04L47/15 ,  H04L47/70 ,  H04L47/801 ,  H04L47/806 ,  H04L47/822 ,  H04L47/823 ,  H04L47/826 ,  H04M3/36 ,  H04M3/567 ,  H04N7/152

Abstract: A method for dynamically allocating MCU resources during a multipoint network event such as a conference call. The method determines the number of MCU resources to allocate for the start of the multipoint network event and then at each of a plurality of modeling intervals during the multipoint event adjusts the number of allocated MCU resources based upon actual inbound users. Self-tuning of the allocation of MCU resources for multipoint events occurs in advance of use by providing a look ahead allocation of resources based on what is likely to be needed in the future for a conferencing event. The number of multipoint events occurring within a tuning interval are counted. The number of MCU resources actually utilized during each multipoint event are accumulated and then a probability value is determined for future use of MCU resources for an upcoming multipoint event.

公开(公告)号：US07046295B2

公开(公告)日：2006-05-16

申请号：US10004326

申请日：2001-11-14

Applicant: Thao D. Hovanky

Inventor： Thao D. Hovanky

IPC: H04N5/225

CPC classification number: G08B13/1963 ,  F16M11/10 ,  F16M11/18 ,  F16M11/2014

Abstract: A positioning device is provided for rotatably positioning a camera or other article about orthogonal rotational axes. The positioning device includes a carriage supported for rotation about a horizontal axis by a yoke. The yoke is in turn rotatably coupled to a base assembly for rotation of the yoke about a vertical axis. Rotation of the camera about the horizontal and vertical axes is respectively effected by first and second voice coil actuators, each comprising a pair of magnets and at least one coil to which current is supplied. The amplitude and direction of the current supplied to the coil determines the speed and direction of rotation of the camera. The second voice coil actuator preferably includes a coil assembly comprising two opposed coils. This design overcomes the angular range limitations associated with prior art voice coil actuators and enables rotation of the camera about an extended angular range. The device can be advantageously utilized for adjustment of the pan and tilt angles of a video camera in a conferencing system.

公开(公告)号：US20060018285A1

公开(公告)日：2006-01-26

申请号：US11203053

申请日：2005-08-12

Applicant: Jeffrey Rodman ,  Gil Pearson

Inventor： Jeffrey Rodman ,  Gil Pearson

IPC: H04Q7/00

CPC classification number: H04M3/56 ,  H04M3/568 ,  H04M2207/18 ,  H04M2242/30

Abstract: A system and method for determining if a first and second device are co-located includes first and second sensors for receiving a sample signal. Each sensor is coupled to the first and second devices. The first and second devices each responsively generate a first and second signal representing the sampled signal. Also included is a transmission device located at the first device for transmitting the first signal to the second device and a receiving device located at the second device for receiving the first signal from the first device. Finally, a signal analysis device determines if the first and second devices are co-located.

公开(公告)号：US20050213736A1

公开(公告)日：2005-09-29

申请号：US11080999

申请日：2005-03-15

Applicant: Jeffrey Rodman ,  David Drell

Inventor： Jeffrey Rodman ,  David Drell

IPC: H04L12/16 ,  H04L12/28 ,  H04L12/66 ,  H04M3/42 ,  H04M3/56 ,  H04M7/00 ,  H04Q11/00

CPC classification number: H04L12/66 ,  H04L12/1822 ,  H04L12/1827 ,  H04M3/567 ,  H04M3/568 ,  H04M7/0057 ,  H04M7/006 ,  H04M11/06 ,  H04M11/066 ,  H04M2203/5036 ,  H04N7/152 ,  H04Q11/00 ,  H04Q2213/1309 ,  H04Q2213/13106 ,  H04Q2213/1324 ,  H04Q2213/24

Abstract: Disclosed herein are methods, systems, and devices for improved audio, video, and data conferencing. The present invention provides a conferencing system comprising a plurality of endpoints communicating data including audio data and control data according to a communication protocol. A local conference endpoint may control or be controlled by a remote conference endpoint. Data comprising control signals may be exchanged between the local endpoint and remote endpoint via various communication protocols. In other embodiments, the present invention provides for improved bridge architecture for controlling functions of conference endpoints including controlling functions of the bridge.

Abstract translation: 本文公开了用于改进音频，视频和数据会议的方法，系统和设备。 本发明提供一种会议系统，包括根据通信协议传送包括音频数据和控制数据的数据的多个端点。 本地会议端点可以由远程会议端点控制或控制。 包含控制信号的数据可以通过各种通信协议在本地端点和远程端点之间交换。 在其他实施例中，本发明提供了用于控制会议端点的功能的改进的桥接架构，包括控制桥的功能。

公开(公告)号：US20050213735A1

公开(公告)日：2005-09-29

申请号：US11080997

申请日：2005-03-15

Applicant: Jeffrey Rodman ,  David Drell

Inventor： Jeffrey Rodman ,  David Drell

IPC: H04L12/16 ,  H04L12/18 ,  H04M3/42 ,  H04M3/56 ,  H04Q11/00

CPC classification number: H04L12/1813 ,  H04B1/40 ,  H04L12/1822 ,  H04M1/6033 ,  H04M1/6041 ,  H04M3/567 ,  H04M3/568 ,  H04M7/006 ,  H04N7/15 ,  H04Q11/00 ,  H04Q2213/1324 ,  H04Q2213/13389 ,  H04Q2213/24

Abstract: Disclosed herein are methods, systems, and devices for improved audio, video, and data conferencing. The present invention provides a conferencing system comprising a plurality of endpoints communicating data including audio data and control data according to a communication protocol. A local conference endpoint may control or be controlled by a remote conference endpoint. Data comprising control signals may be exchanged between the local endpoint and remote endpoint via various communication protocols. In other embodiments, the present invention provides for improved bridge architecture for controlling functions of conference endpoints including controlling functions of the bridge.

Abstract translation: 本文公开了用于改进音频，视频和数据会议的方法，系统和设备。 本发明提供一种会议系统，包括根据通信协议传送包括音频数据和控制数据的数据的多个端点。 本地会议端点可以由远程会议端点控制或控制。 包含控制信号的数据可以通过各种通信协议在本地端点和远程端点之间交换。 在其他实施例中，本发明提供了用于控制会议端点的功能的改进的桥接架构，包括控制桥的功能。