公开(公告)号：US5428629A

公开(公告)日：1995-06-27

申请号：US263902

申请日：1994-06-20

申请人： Michael Gutman ,  Ping Dong

发明人： Michael Gutman ,  Ping Dong

IPC分类号： H04L1/00 ,  G06F11/08 ,  H03M13/00

CPC分类号： H04L1/0057 ,  H04L1/0083

摘要： In a data packet communications network capable of transmitting a digitally coded data packet message including an error-check code from a source node to a destination node over a selected transmission link which includes at least one intermediate node operative to intentionally alter a portion of a message to form an altered message which is ultimately routed to the destination node, a method of recomputing at the intermediate node a new error-check code for the altered message with a predetermined number of computational operations, i.e. computational time, independent of the length of the message, while preserving the integrity of the initially computed error-check code of the message.

摘要翻译： 在能够通过选择的传输链路从源节点向目的地节点发送包括错误校验码的数字编码数据分组消息的数据分组通信网络中，所述传输链路包括至少一个中间节点，该中间节点有效地改变消息的一部分 以形成最终路由到目的地节点的改变的消息，在中间节点处重新计算具有预定数量的计算操作的改变的消息的新的错误校验码的方法，即计算时间，独立于 消息，同时保持消息的初始计算的错误检查码的完整性。

公开(公告)号：US20100095191A1

公开(公告)日：2010-04-15

申请号：US12577125

申请日：2009-10-09

申请人： Sriram Mudulodu ,  Ping Dong ,  Jordan Christopher Cookman ,  Tao Yu

发明人： Sriram Mudulodu ,  Ping Dong ,  Jordan Christopher Cookman ,  Tao Yu

IPC分类号： H04B1/66 ,  H03M13/27 ,  G06F11/07

CPC分类号： H04B1/66 ,  H03M13/2782 ,  H03M13/6505 ,  H03M13/6577 ,  H04L1/0052 ,  H04L1/0071

摘要： A method and apparatus for deinterleaving in a communication system is disclosed. The method and apparatus deinterleave data units using a data deinterleaver; compressed deinterleave input symbol quality information (SQI) units using a compressed deinterleaver, wherein at least one of the input SQI units deinterleaved by the compressed deinterleaver corresponds to at least one of the plurality of data units deinterleaved by the data deinterleaver; and apply the deinterleaved SQI units to the corresponding deinterleaved data units.

摘要翻译： 公开了一种在通信系统中解交织的方法和装置。 该方法和装置使用数据解交织器对数据单元进行解交织; 使用压缩解交织器的压缩解交织输入符号质量信息（SQI）单元，其中由所述压缩解交织器解交织的所述输入SQI单元中的至少一个对应于由所述数据解交织器解交错的所述多个数据单元中的至少一个; 并将去交织的SQI单元应用于相应的解交织数据单元。

公开(公告)号：US07151574B2

公开(公告)日：2006-12-19

申请号：US10725955

申请日：2003-12-01

申请人： Ping Dong ,  Jordan C. Cookman

发明人： Ping Dong ,  Jordan C. Cookman

IPC分类号： H04N9/77

CPC分类号： H04N9/646 ,  H04N9/78

摘要： A device and method are provided for implementing digital baseband separation of composite video signals with reduced memory requirements. The method and device require that only the composite signal be stored in a large delay element. Multiple quadrature demodulators are employed to generate multiple delayed complex baseband signals. Therefore, no large complex baseband delay element is required.

摘要翻译： 提供了一种用于实现具有减少的存储器要求的复合视频信号的数字基带分离的装置和方法。 该方法和装置要求仅将复合信号存储在大的延迟元件中。 采用多个正交解调器来产生多个延迟的复基带信号。 因此，不需要大的复基带延迟元件。

公开(公告)号：US07020674B2

公开(公告)日：2006-03-28

申请号：US10722728

申请日：2003-11-25

申请人： Jordan C. Cookman ,  Ping Dong

发明人： Jordan C. Cookman ,  Ping Dong

IPC分类号： G06F7/38

CPC分类号： G06F7/72 ,  G06F7/729 ,  H04L27/00

摘要： A method and device are provided that allow computation of multiple modulus conversion (MMC) outputs using little or no division operations. Instead of division operations, multiplication and logical shift operations are used to produce pseudo-quotients and pseudo-remainders, which may be corrected in a final step to produce correct MMC outputs. This allows for more efficient implementation, since division is typically less efficient than multiplication and logical shift. The method and device operate on MMC inputs that may be partitioned into sub-quotients of varying numbers of digits in any numbering system. The multiplication and logical shift operations are performed on each of the sub-quotients according to a procedure derived from long-division techniques.

公开(公告)号：US5268655A

公开(公告)日：1993-12-07

申请号：US890043

申请日：1992-05-27

申请人： Ping Dong

发明人： Ping Dong

IPC分类号： H03L7/093 ,  H03L7/107

CPC分类号： H03L7/093 ,  H03L7/107

摘要： A self-adjusting phase-locked loop (PLL) parameter adjusting device (APAD) (100) and method that automatically adjusts a phase-locked loop to provide tracking ability when and where needed, as opposed to utilizing a PLL adjusting device with preset parameters, thus maintaining minimal possible noise bandwidth. The method utilizes (1) successively integrating the PLL error output signal over a number of samples to provide a plurality of sums, (2) checking a predetermined number of sums and recording and counting the sign of each sum, (3) comparing the counted record to a predetermined threshold value, and (4) automatically adjusting PLL parameter(s) and the sample number in accordance with a predetermined strategy, such that adjusted PLL parameters are provided to the PLL.

摘要翻译： 一种自调节锁相环（PLL）参数调节装置（APAD）（100）和方法，可自动调节锁相环，以在需要时和位置提供跟踪能力，而不是利用具有预设参数的PLL调节装置 ，从而保持最小可能的噪声带宽。 该方法利用（1）在多个样本上连续积分PLL误差输出信号以提供多个和，（2）检查预定数量的和，并记录和计数每个和的符号，（3）比较计数 记录到预定阈值，以及（4）根据预定策略自动调整PLL参数和样本数，使得调整的PLL参数被提供给PLL。

公开(公告)号：US20130044887A1

公开(公告)日：2013-02-21

申请号：US13210916

申请日：2011-08-16

申请人： Ping Dong ,  Qing-Guang Liu ,  Wan-Chieh Pai

发明人： Ping Dong ,  Qing-Guang Liu ,  Wan-Chieh Pai

IPC分类号： H04R29/00 ,  H04R3/00

CPC分类号： H04R3/00 ,  H04M1/2475 ,  H04M1/605 ,  H04R29/00 ,  H04R2400/01

摘要： An audio apparatus is provided. The audio apparatus includes at most one electroacoustic transducer; and an audio controller, coupled to the electroacoustic transducer, for actively controlling the electroacoustic transducer to function as a loudspeaker or a microphone, wherein the loudspeaker converts output electrical signals to output sounds, and the microphone converts input sounds to input electrical signals.

摘要翻译： 提供一种音频装置。 音频装置至多包括一个电声换能器; 以及耦合到电声换能器的音频控制器，用于主动控制电声换能器用作扬声器或麦克风，其中扬声器将输出电信号转换为输出声音，并且麦克风将输入声音转换为输入电信号。

公开(公告)号：US08135058B2

公开(公告)日：2012-03-13

申请号：US12249814

申请日：2008-10-10

申请人： Jordan Christopher Cookman ,  Ping Dong ,  Tao Yu

发明人： Jordan Christopher Cookman ,  Ping Dong ,  Tao Yu

IPC分类号： H04L27/01 ,  H04B3/20

CPC分类号： H04L25/03159 ,  H04L25/0212 ,  H04L25/03057 ,  H04L27/2657 ,  H04L2025/03414

摘要： An adaptive known signal canceller comprising of a known signal canceller filter responsive to a known signal including a known portion of a transmitted signal, the known signal canceller filter operative to generate a filtered known signal, and a subtractor unit responsive to an input signal and operative to generate an output signal, the subtractor unit configured to subtract the filtered known signal from the input signal to generate an output signal, such that the known portion of the transmitted signal is substantially removed from the input signal. The adaptive known signal canceller further comprising of a known signal canceller update unit, responsive to a desired signal and an output signal and operative to continually adjust the coefficients of the known signal canceller filter based on the difference between the output signal and the desired signal, so that the filter coefficients substantially reflect the impulse response of a channel.

摘要翻译： 一种自适应的已知信号消除器，其包括响应于包括已发射信号的已知信号的已知信号的已知信号消除器滤波器，用于产生已滤波的已知信号的已知信号消除器滤波器以及响应于输入信号和操作的减法器单元 为了产生输出信号，减法器单元被配置为从输入信号中减去已滤波的已知信号以产生输出信号，从而基本上从输入信号中去除已发射信号的已知部分。 自适应已知信号消除器还包括已知的信号消除器更新单元，响应所需信号和输出信号，并且可操作以基于输出信号和期望信号之间的差连续地调整已知信号消除器滤波器的系数， 使得滤波器系数基本上反映了信道的脉冲响应。

公开(公告)号：US08077821B2

公开(公告)日：2011-12-13

申请号：US11527084

申请日：2006-09-25

申请人： Ping Dong ,  Jordan Christopher Cookman

发明人： Ping Dong ,  Jordan Christopher Cookman

IPC分类号： H04L7/00 ,  H04L27/10 ,  H04J3/22

CPC分类号： H04L7/0058 ,  H04L7/0278

摘要： In accordance with a method and apparatus of the present invention, a timing recovery device is disclosed to include a timing correction module responsive to a sampled input signal and adapted to generate a time-corrected signal and to further include a linear predictor coupled to the timing correction module for filtering the time-corrected signal to generate a whitened output signal and to further include a timing update module responsive to the whitened output signal for updating at least one parameter in the timing correction module.

摘要翻译： 根据本发明的方法和装置，公开了一种定时恢复装置，其包括响应于采样输入信号的定时校正模块，并适于产生经时间校正的信号，并且还包括耦合到定时的线性预测器 校正模块，用于对时间校正信号进行滤波以产生白化输出信号，并且还包括响应于白化输出信号的定时更新模块，用于更新定时校正模块中的至少一个参数。

公开(公告)号：US07649932B2

公开(公告)日：2010-01-19

申请号：US11291344

申请日：2005-11-30

申请人： Ping Dong ,  Tao Yu

发明人： Ping Dong ,  Tao Yu

IPC分类号： H03H7/30

CPC分类号： H04L25/03038 ,  H04L25/03057 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04L2025/0349 ,  H04L2025/03687

摘要： In one embodiment of the present invention, a segmented equalizer includes a plurality of feedforward equalizer segments, each feedforward equalizer segment responsive to delayed samples of an input signal {vn}, wherein n is the index of samples, and including a filter block for filtering the delayed samples by using coefficients which are updated based on a step size generated for each equalizer segment.

摘要翻译： 在本发明的一个实施例中，分段均衡器包括多个前馈均衡器段，每个前馈均衡器段响应于输入信号{vn}的延迟采样，其中n是采样索引，并且包括用于滤波的滤波器块 通过使用基于为每个均衡器段生成的步长来更新的系数的延迟采样。

公开(公告)号：US06463103B1

公开(公告)日：2002-10-08

申请号：US09657769

申请日：2000-09-08

申请人： Ping Dong ,  Kuo-Yu Lin

发明人： Ping Dong ,  Kuo-Yu Lin

IPC分类号： H04B1404

CPC分类号： H04B14/04

摘要： A spectral shaping PCM modem communication system uses a symbol encoder to encode a data bit stream into a PCM symbol stream. A plurality of different frames are formed from the PCM symbol stream. Performance metrics are computed for each possible frame and its inversion so a decision can be made in order to select a most desirable frame and inversion Delays are injected in the data flow to allow a look-ahead and thus provide for better frame selection and inversion decisions. A channel multiplexer combines decision bits and output frames to form encoded output frames that are fed to a digital channel connected to a telephone network wherein they are converted to analog signal. A corresponding decoder converts analog signals from the telephone network to digital signals. A timing recovery and equalization means corrects sample timing and removes inter-symbol interference effects introduced by telephone networks. The output of the equalizer is sampled at correct timing to recover the received samples and received frame. A channel de-multiplexer separates the frame selection and frame inversion decision bits from the symbol frames received. Inversion and framing decisions are discerned from the demultiplexed frame selection and frame inversion decision bits. Original PCM symbol frames are reconstructed and PCM symbols are decoded into a data bit stream. A non-negative shell mapping may be used as the symbol encoder. A decoder checks to see if a currently received frame is negative. If it is, then all samples in such current frame are inverted. Otherwise, all samples in the current frame are unchanged. The resulting frames are then forwarded to a non-negative shell mapping decoder for eventual reconversion to digital data.

摘要翻译： 频谱整形PCM调制解调器通信系统使用符号编码器将数据比特流编码成PCM符号流。 从PCM符号流形成多个不同的帧。 针对每个可能的帧及其反演来计算性能度量，以便可以做出决定以便选择最理想的帧和反演延迟被注入到数据流中以允许先行，从而提供更好的帧选择和反演决策 。 信道多路复合器组合决策位和输出帧以形成被馈送到连接到电话网络的数字信道的编码输出帧，其中它们被转换为模拟信号。 相应的解码器将来自电话网络的模拟信号转换成数字信号。 定时恢复和均衡意味着校正采样定时并消除电话网络引入的符号间干扰效应。 在正确的定时对均衡器的输出进行采样，以恢复接收到的采样和接收的帧。 信道解复用器将帧选择和帧反转决策位与接收的符号帧分离。 从解复用的帧选择和帧反转决定位中辨别反转和成帧决策。 原始PCM符号帧被重建并且PCM符号被解码成数据比特流。 可以使用非负外壳映射作为符号编码器。 解码器检查当前接收的帧是否为负。 如果是，则当前帧中的所有样本都被反转。 否则，当前帧中的所有样本都不变。 然后将所得到的帧转发到非负壳映射解码器，以最终重新转换为数字数据。