公开(公告)号：US08054880B2

公开(公告)日：2011-11-08

申请号：US11269428

申请日：2005-11-07

申请人： Guoyao Yu ,  Mayer D. Schwartz ,  Charles H. Van Dusen ,  Peter Borgwardt

发明人： Guoyao Yu ,  Mayer D. Schwartz ,  Charles H. Van Dusen ,  Peter Borgwardt

IPC分类号： H04N7/12

CPC分类号： H04N21/44004 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/15 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/194 ,  H04N19/436 ,  H04N21/23406

摘要： A method of operating a multi-processor video encoder by determining a target size corresponding to a preferred number of bits to be used when creating an encoded version of a picture in a group of sequential pictures making up a video sequence. The method includes the steps of calculating a first degree of fullness of a coded picture buffer at a first time, operating on the first degree of fullness to return an estimated second degree of fullness of the coded picture buffer at a second time, and operating on the second degree of fullness to return an initial target sized for the picture. The first time corresponds to the most recent time an accurate degree of fullness of the coded picture buffer can be calculated and the second time occurs after the first time.

摘要翻译： 一种通过在构成视频序列的一组连续图像中创建图像的编码版本时，通过确定与要使用的优选位数相对应的目标大小来操作多处理器视频编码器的方法。 该方法包括以下步骤：在第一时间计算编码图像缓冲器的第一饱和度，在第一次饱和度下操作，以在第二时间返回编码图像缓冲器的估计第二饱和度，并且操作 第二度的丰满度返回一幅初始的图像大小。 第一次对应于最近的时间，可以计算编码图像缓冲器的准确程度的饱和度，并且第二次在第一次之后发生。

公开(公告)号：US20110200114A1

公开(公告)日：2011-08-18

申请号：US13093799

申请日：2011-04-25

申请人： Mayer D. Schwartz

发明人： Mayer D. Schwartz

IPC分类号： H04N7/26

CPC分类号： H04N19/42 ,  H04N19/103 ,  H04N19/147 ,  H04N19/149 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

摘要： Information needed to generate an encoded version of a matrix of j transform coefficients c0 . . . cj−1 representing a block of digital video data is determined by forming a numerical signature σ of the matrix and looking up a value for the information needed in an array employing the signature σ as an index to the array.

摘要翻译： 生成j变换系数c0的矩阵的编码版本所需的信息。 。 。 表示数字视频数据块的cj-1通过形成数字签名＆sgr来确定; 并且查找使用签名＆sgr的数组中所需的信息的值; 作为数组的索引。

公开(公告)号：US20080151906A1

公开(公告)日：2008-06-26

申请号：US11956652

申请日：2007-12-14

申请人： Raja Kolli ,  Garrett Mead ,  John Reister ,  Christopher J. Shaver ,  Wendell Sun ,  Mark Tiedeman

发明人： Raja Kolli ,  Garrett Mead ,  John Reister ,  Christopher J. Shaver ,  Wendell Sun ,  Mark Tiedeman

IPC分类号： H04L12/56

CPC分类号： H04L12/2856 ,  H04L12/289 ,  H04L29/12207 ,  H04L29/12933 ,  H04L61/20 ,  H04L61/6068

摘要： A transparent routing device disposed within an access network configured in accordance with one or more lower-layer protocols is disclosed herein. The device includes a set of subscriber-side ports. Each of the subscriber-side ports is associated with a plurality of virtual subscriber-side interfaces disposed to effectively terminate a corresponding plurality of subscriber-side connections with subscriber host devices served by the access network. The device further includes at least one network-side port through which communication occurs with an external network in accordance with a higher-layer protocol. A routing table is configured to establish a correspondence between network addresses of the subscriber host devices and the plurality of virtual subscriber-side interfaces. During operation of the device, packets received through the at least one network-side port are forwarded to corresponding ones of the virtual subscriber-side interfaces based upon network addresses of the packets.

摘要翻译： 本文公开了布置在根据一个或多个下层协议配置的接入网络内的透明路由设备。 该设备包括一组用户端口。 每个用户侧端口与多个虚拟用户侧接口相关联，多个虚拟用户侧接口被设置为有效地终止与由接入网络服务的用户主机设备相对应的多个用户侧连接。 该设备还包括至少一个网络侧端口，根据较高层协议，与外部网络进行通信的至少一个网络侧端口。 路由表被配置为建立用户主机设备的网络地址与多个虚拟用户侧接口之间的对应关系。 在设备运行期间，基于分组的网络地址，通过至少一个网络侧端口接收到的分组被转发到虚拟用户侧接口中的相应虚拟用户侧接口。

公开(公告)号：US07099389B1

公开(公告)日：2006-08-29

申请号：US10316483

申请日：2002-12-10

申请人： Guoyao Yu ,  Zhi Zhou ,  Charles H. Van Dusen

发明人： Guoyao Yu ,  Zhi Zhou ,  Charles H. Van Dusen

IPC分类号： H04N7/12 ,  H04N11/02

CPC分类号： H04N19/115 ,  H04N19/117 ,  H04N19/124 ,  H04N19/152 ,  H04N19/172 ,  H04N19/177 ,  H04N19/40 ,  H04N19/61 ,  H04N19/80 ,  H04N19/85

摘要： A method of rate control using a picture-based lookahead sliding window in a dual-pass transcoder/encoder compressed video architecture extracts statistics from an input video signal according to a simple compression standard, the input video signal being a compressed video signal for transcoding or an uncompressed video signal for encoding. A trans-factor is calculated for a current picture based on previous pictures in a sliding window to predict the complexity of the current picture, the trans-factor being a ratio of global complexity measures for the simple compression standard versus a sophisticated compression standard. Bits for the current picture are then allocated based on the complexity of future pictures in the sliding window. After encoding the current picture according to the sophisticated compression standard, the target bits of and the picture complexity in the sliding window, as well as the trans-factor, are updated as the window is moved by one picture. The extraction of the statistics is achieved in a transcoder by using a simple compression standard decoder to produce the statistics from the compressed video signal as the input video signal, and in an encoder by using a simple compression encoder to generate the statistics from the uncompressed video signal as the input video signal.

摘要翻译： 在双通道代码转换器/编码器压缩视频架构中使用基于图像的前瞻滑动窗口的速率控制方法根据简单的压缩标准从输入视频信号中提取统计信息，输入视频信号是用于代码转换的压缩视频信号， 用于编码的未压缩视频信号。 基于滑动窗口中的先前图像来计算当前图像的转换因子，以预测当前图像的复杂度，反向因子是简单压缩标准与复杂压缩标准的全局复杂度度量之比。 然后根据滑动窗口中未来图片的复杂度分配当前图片的位。 在根据复杂的压缩标准对当前图像进行编码之后，当窗口被一个图像移动时，更新滑动窗口中的目标位和图像复杂度以及变换因子。 通过使用简单的压缩标准解码器从压缩视频信号作为输入视频信号产生统计信息，并且在编码器中通过使用简单的压缩编码器来生成来自未压缩视频的统计信息，在代码转换器中实现统计的提取 信号作为输入视频信号。

公开(公告)号：US06879644B1

公开(公告)日：2005-04-12

申请号：US09153810

申请日：1998-09-15

申请人： Jeremiah M. Jeffress

发明人： Jeremiah M. Jeffress

IPC分类号： H04L25/06

CPC分类号： H04L25/061

摘要： A method of automatically determining a peak level of a signal propagated on a carrier medium, such as for example POTS wiring, includes detecting a traversal of a noise threshold level by a data signal. The noise threshold level is determined relative to a noise floor. A determination is then made as to whether the data signal traverses a peak level within a predetermined time interval after the detection of the traversal of the noise threshold level. The peak level is then varied in accordance with the determination of whether the data signal traversed the peak level within the predetermined time interval. For example, should the data signal not traversed the peak level within the predetermined time interval, the peak level may be lowered. Alternatively, should the data signal traversed the peak level within the predetermined time interval, the peak level may be raised.

摘要翻译： 自动确定在载体介质（例如POTS布线）上传播的信号的峰值电平的方法包括通过数据信号检测噪声阈值电平的遍历。 噪声阈值水平相对于本底噪声确定。 然后，在检测到噪声阈值电平的遍历之后，确定数据信号是否在预定时间间隔内穿过峰值电平。 然后根据在预定时间间隔内数据信号是否经过峰值电平的确定来改变峰值电平。 例如，如果数据信号在预定时间间隔内未经过峰值电平，则峰值电平可能降低。 或者，如果数据信号在预定时间间隔内经过峰值电平，则可以提高峰值电平。

公开(公告)号：US07453829B2

公开(公告)日：2008-11-18

申请号：US10697512

申请日：2003-10-29

申请人： Athar N. Pasha ,  Ryan P. Hegar ,  Jon E. Erickson

发明人： Athar N. Pasha ,  Ryan P. Hegar ,  Jon E. Erickson

IPC分类号： H04L12/16

CPC分类号： H04L65/4038 ,  H04L29/06027

摘要： A video conferencing terminal includes an encoder that receives a baseband audio signal and a baseband video signal and creates compressed audio packets and compressed audio-video packets. A network interface driver receives the compressed audio packets and the compressed audio-video packets, IP encapsulates the compressed audio packets and the compressed audio-video packets, transmits the IP packets onto an IGMP network. The network interface driver also requests audio packets and audio-video packets from the network and recovers compressed audio packets and compressed audio-video packets from the IP packets received from the network. A decoder receives compressed audio packets and compressed audio-video packets from the network interface driver and generates a baseband video signal and multiple baseband audio signals.

摘要翻译： 视频会议终端包括接收基带音频信号和基带视频信号并产生压缩音频分组和压缩音频 - 视频分组的编码器。 网络接口驱动器接收压缩音频分组和压缩音视频分组，IP封装压缩音频分组和压缩音视频分组，将IP分组传送到IGMP网络。 网络接口驱动程序还从网络请求音频数据包和音视频数据包，并从网络接收的IP数据包中恢复压缩音频数据包和压缩音视频数据包。 解码器从网络接口驱动器接收压缩音频分组和压缩音频 - 视频分组，并产生基带视频信号和多个基带音频信号。

公开(公告)号：US07113486B2

公开(公告)日：2006-09-26

申请号：US10428698

申请日：2003-05-01

申请人： Mayer D. Schwartz

发明人： Mayer D. Schwartz

IPC分类号： G01R31/08 ,  G06F11/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04L12/28

CPC分类号： H04N21/64322 ,  H04N21/2381 ,  H04N21/4305 ,  H04N21/4307 ,  H04N21/4381

摘要： Variation in delay in transmission of data from a transmitting station to a receiving station is measured by encapsulating a portion of the data and an outgoing time stamp in a packet, the outgoing time stamp substantially representing the degree of progression of a periodic process at the time of including the outgoing time stamp in the packet. The packet is transmitted from the transmitting station and is received at the receiving station. At the receiving station, an incoming time stamp is added to the packet. The incoming time stamp substantially represents the degree of progression of a periodic process at the time of adding the incoming time stamp to the packet. The incoming time stamp is compared to the outgoing time stamp.

摘要翻译： 通过将数据的一部分和输出时间戳封装在分组中来测量来自发射站到接收站的数据传输延迟的变化，该输出时间戳基本上表示当时的周期性处理的进展程度 在包中包含传出时间戳。 该数据包是从发送站发送的，并在接收站接收。 在接收站，将一个传入的时间戳添加到数据包。 输入时间戳基本上表示在输入时间戳添加到分组时的周期性处理的进行程度。 输入时间戳与传出的时间戳进行比较。

公开(公告)号：US5587692A

公开(公告)日：1996-12-24

申请号：US345111

申请日：1994-11-28

申请人： Martin H. Graham ,  Matthew Taylor

发明人： Martin H. Graham ,  Matthew Taylor

IPC分类号： H04B3/30

CPC分类号： H04B3/30

摘要： A method for connecting together two twisted pair lines in a LAN so as to avoid common mode current. The invention recognizes that the impedance to ground is different for each wire in the twisted pair line. Moreover, this impedance is different from spool-to-spool for lines having the same purported impedance. A balun is placed at the connection between the lines.

摘要翻译： 将LAN中的两条双绞线连接在一起以避免共模电流的方法。 本发明认识到，对于双绞线中的每个线，对地的阻抗是不同的。 此外，该阻抗与具有相同声称阻抗的线路的线轴到线轴不同。 平衡 - 不平衡转换器位于线路之间的连接处。

公开(公告)号：US5379005A

公开(公告)日：1995-01-03

申请号：US092721

申请日：1993-07-16

申请人： Charles M. Aden ,  Martin H. Graham ,  Matthew Taylor ,  Mark Miller

发明人： Charles M. Aden ,  Martin H. Graham ,  Matthew Taylor ,  Mark Miller

IPC分类号： G06F3/00 ,  H03H7/42 ,  H04B3/50 ,  H04L12/40

CPC分类号： H03H7/42 ,  H04L12/40

摘要： A LAN which uses flat telephone cable having at least four conductors. The inner conductors are joined together and the outer conductors are joined together at each node thereby making reversals of the inner and outer conductors, which may occur at connectors, impossible. Each node uses two baluns to provide an unbalanced zone between the baluns for connecting to the DTE.

公开(公告)号：US5347225A

公开(公告)日：1994-09-13

申请号：US208914

申请日：1994-03-10

申请人： Martin H. Graham

发明人： Martin H. Graham

IPC分类号： G08B29/06 ,  H04L12/26 ,  G01R31/08

CPC分类号： G08B29/06 ,  H04L43/0811

摘要： An apparatus for monitoring and testing a twisted pair, particularly useful for an Ethernet network. First and second DC currents alternated with one another are applied to both ends of the line, asynchronously. By monitoring the potential on the line, a determination is made as to the condition of the line. For example, shorted, crossed, improperly terminated or open conditions can be detected. A visual indication of the condition of the line is provided and additionally, the visual indication provides an indication of the traffic level in the network.