公开(公告)号：US08787112B2

公开(公告)日：2014-07-22

申请号：US12958158

申请日：2010-12-01

Applicant: David M Cook ,  Ran-Fun Chiu

Inventor： David M Cook ,  Ran-Fun Chiu

IPC: G01V1/36 ,  G01V1/28

CPC classification number: G01V1/375

Abstract: Methods and apparatus are provided related to seismic sensor data. Seismic sensor signaling is digitally sampled in accordance with a local clock and without synchronization to standardized time. Timestamp data is used to synthesize data correspondent to an artificial stimulus waveform. Cross-correlation of the synthesized data with the seismic sensor data yields a correlation result. The correlation result can be scaled to an original starting time for the seismic data sampling. The scaled correlation result can be stored in computer-accessible media and subject to further processing or interpretation.

Abstract translation: 提供了与地震传感器数据相关的方法和装置。 地震传感器信号根据本地时钟进行数字采样，无需与标准化时间同步。 时间戳数据用于合成与人造刺激波形相对应的数据。 合成数据与地震传感器数据的相互关系产生相关结果。 相关结果可以缩放到地震数据采样的原始起始时间。 缩放的相关结果可以存储在计算机可访问的媒体中，并进行进一步的处理或解释。

公开(公告)号：US20120140594A1

公开(公告)日：2012-06-07

申请号：US12958158

申请日：2010-12-01

Applicant: David M. Cook ,  Ran-Fun Chiu

Inventor： David M. Cook ,  Ran-Fun Chiu

IPC: G01V1/36

CPC classification number: G01V1/375

Abstract: Methods and apparatus are provided related to seismic sensor data. Seismic sensor signaling is digitally sampled in accordance with a local clock and without synchronization to standardized time. Timestamp data is used to synthesize data correspondent to an artificial stimulus waveform. Cross-correlation of the synthesized data with the seismic sensor data yields a correlation result. The correlation result can be scaled to an original starting time for the seismic data sampling. The scaled correlation result can be stored in computer-accessible media and subject to further processing or interpretation.

Abstract translation: 提供了与地震传感器数据相关的方法和装置。 地震传感器信号根据本地时钟进行数字采样，无需与标准化时间同步。 时间戳数据用于合成与人造刺激波形相对应的数据。 合成数据与地震传感器数据的相互关系产生相关结果。 相关结果可以缩放到地震数据采样的原始起始时间。 缩放的相关结果可以存储在计算机可访问的媒体中，并进行进一步的处理或解释。

公开(公告)号：US4035625A

公开(公告)日：1977-07-12

申请号：US600729

申请日：1975-07-31

Applicant: Ran-Fun Chiu ,  James Bryon Sherman ,  Judson Truman Gilbert

Inventor： Ran-Fun Chiu ,  James Bryon Sherman ,  Judson Truman Gilbert

IPC: H03H7/01 ,  H04B3/06 ,  H04L25/03 ,  H04L27/22 ,  H04L27/38 ,  H04B3/14

CPC classification number: H04L25/03038 ,  H04L27/22

Abstract: A phase modulation modem providing switch selectable speeds on voice-band channels utilizes four phase, modified eight phase, and optimized eight phase, two amplitude modulation techniques. A binary equalizer automatically corrects for envelope delay and amplitude distortion of the carrier signal caused by the voice-band channel. Each symbol time, the X-axis error and Y-axis error for the received symbol is determined by comparing the received X and Y components with stored ideal X and Y components for that symbol. These error X and error Y values are used to modify primary and secondary equalization constants. The equalization constants, thus modified during this symbol time, are used on the next received symbol to correct for the phase and amplitude distortion measured during past symbol times. This sequence is repeated for each symbol time. Preselected equalization constants are utilized on the first symbol received. To equalize the line very rapidly at start-up, a phase training signal is sent prior to data transmission. After this "course" adjustment the equalizer operates on the received data symbols to very accurately correct the phase and amplitude distortions of the received symbols. A symbol quality signal is conveniently generated as a result of the equalizer operation.

Abstract translation: 在语音频带信道上提供开关可选速度的相位调制调制解调器利用四相，改进的八相和优化的八相二幅度调制技术。 二进制均衡器自动校正由声带通道引起的载波信号的包络延迟和幅度失真。 每个符号时间，通过将接收的X和Y分量与该符号的存储的理想X和Y分量进行比较来确定接收符号的X轴误差和Y轴误差。 这些误差X和误差Y值用于修改初级和次级均衡常数。 在该符号时间期间修改的均衡常数在下一个接收的符号上被使用，以校正在过去符号时间期间测量的相位和幅度失真。 为每个符号时间重复此序列。 在所接收的第一个符号上使用预选均衡常数。 为了在启动时非常快速地平衡线路，在数据传输之前发送相位训练信号。 在这个“课程”调整之后，均衡器对所接收的数据符号进行操作以非常精确地校正接收的符号的相位和幅度失真。 作为均衡器操作的结果，方便地生成符号质量信号。

公开(公告)号：US4873702A

公开(公告)日：1989-10-10

申请号：US260288

申请日：1988-10-20

Applicant: Ran-Fun Chiu

Inventor： Ran-Fun Chiu

IPC: H04L25/06

CPC classification number: H04L25/066 ,  H04L25/064

Abstract: A technique for eliminating unwanted dc offset voltages in a receiver for decoding a plurality of multilevel digitally modulated signals. The data transmission system is arranged to send a particular preamble signal each time a different data source begins transmission of its data. The preamble signal produces at the receiver output multiple cycles of maximum level excursions. During the period of time that the preamble signal is received, a signal processor in the receiver determines an initial dc offset value by averaging the level of the received digitally modulated signal. After the transmission of the preamble, the signal processor continually generates updated dc offset voltages which are equal to the sum of the previously generated dc offset voltage and the difference between the amplitude level represented by the received digitally modulated signal and the amplitude level of the closest "coding" amplitude level; the difference being multiplied by a scaling factor. Once a scaling factor is applied to the updated dc offset value, the result is added to the previous dc offset voltage. And, the process is continually repeated to produce updated dc offset voltages.

Abstract translation: 一种用于消除接收机中不需要的直流偏移电压的技术，用于解码多个多电平数字调制信号。 数据传输系统被布置为每当不同的数据源开始传输其数据时发送特定的前导信号。 前导信号在接收机输出产生多个周期的最大电平偏移。 在接收到前置信号的时间段期间，接收机中的信号处理器通过对所接收的数字调制信号的电平进行平均来确定初始直流偏移值。 信号处理器发送前导码后，连续生成等于先前产生的直流偏移电压和由接收到的数字调制信号表示的振幅电平与最接近的数字调制信号的振幅电平之差的和的更新的直流偏移电压 “编码”幅度水平; 该差异乘以缩放因子。 一旦将比例因子应用于更新的直流偏移值，结果将被添加到先前的直流失调电压。 并且，该过程被不断地重复以产生更新的直流失调电压。

公开(公告)号：US07325075B1

公开(公告)日：2008-01-29

申请号：US10801468

申请日：2004-03-15

Applicant: Ran-Fun Chiu

Inventor： Ran-Fun Chiu

IPC: G06F15/16

CPC classification number: H04L29/12028 ,  H04L29/12047 ,  H04L61/103 ,  H04L61/15

Abstract: The present invention provides methods for address and name discovery for Ethernet entities. In one aspect, a method is provided for discovering an Ethernet address of a target device in a network having a plurality of devices. The method uses a device name of the target device. A broadcast Ethernet packet includes a source address field and a payload field, the source address field including an Ethernet address of an initiator and the payload field of the broadcast Ethernet packet includes the device name of the target device. The Ethernet packet is broadcast over the network to each device in the network including the target device. The broadcast Ethernet packet is ignored at the devices other than the target device. A response Ethernet packet is received from the target device. The response Ethernet packet includes a destination address field with the Ethernet address of the initiator. The response Ethernet packet also includes the Ethernet address of the target device. In another aspect, a method is provided for name discovery.

Abstract translation: 本发明提供了用于以太网实体的地址和名称发现的方法。 一方面，提供一种用于发现具有多个设备的网络中的目标设备的以太网地址的方法。 该方法使用目标设备的设备名称。 广播以太网分组包括源地址字段和有效载荷字段，包括发起方的以太网地址的源地址字段和广播以太网分组的有效载荷字段包括目标设备的设备名称。 以太网分组通过网络广播到包括目标设备的网络中的每个设备。 广播以太网数据包在目标设备以外的设备处被忽略。 从目标设备接收到响应以太网数据包。 响应以太网数据包包括与发起方的以太网地址的目标地址字段。 响应以太网数据包还包括目标设备的以太网地址。 在另一方面，提供了一种用于名称发现的方法。

公开(公告)号：US10135673B2

公开(公告)日：2018-11-20

申请号：US14400366

申请日：2012-06-15

Applicant: Paul T. Congdon ,  Sujata Banerjee ,  Ran-Fun Chiu ,  Kyu Han Kim ,  James S. Hiscock

Inventor： Paul T. Congdon ,  Sujata Banerjee ,  Ran-Fun Chiu ,  Kyu Han Kim ,  James S. Hiscock

IPC: G06F15/16 ,  H04L12/24 ,  H04W12/08 ,  H04W80/06 ,  H04W88/02

Abstract: An electronic device has a plurality of environments including respective communication stacks. The environments correspond to respective different user personas. Data associated with the different user personas are communicated in corresponding separate transport flows over the network.

公开(公告)号：US20150127786A1

公开(公告)日：2015-05-07

申请号：US14400366

申请日：2012-06-15

Applicant: Paul T Congdon ,  Sujata Banerjee ,  Ran-Fun Chiu ,  Kyu Han Kim ,  James S. Hiscock

Inventor： Paul T Congdon ,  Sujata Banerjee ,  Ran-Fun Chiu ,  Kyu Han Kim ,  James S. Hiscock

IPC: H04L12/24

CPC classification number: H04L41/0803 ,  H04W12/08 ,  H04W80/06 ,  H04W88/02

Abstract: An electronic device has a plurality of environments including respective communication stacks. The environments correspond to respective different user personas. Data associated with the different user personas are communicated in corresponding separate transport flows over the network.

Abstract translation: 电子设备具有包括各个通信栈的多个环境。 环境对应于各自不同的用户角色。 与不同用户角色相关联的数据通过网络在相应的单独传输流中传送。

公开(公告)号：US5883901A

公开(公告)日：1999-03-16

申请号：US972149

申请日：1997-11-17

Applicant: Ran-Fun Chiu ,  Mehrban Jam

Inventor： Ran-Fun Chiu ,  Mehrban Jam

IPC: H04L5/00 ,  H04J1/12 ,  H04J3/16 ,  H04L5/14 ,  H04L5/26 ,  H04L7/00 ,  H04L12/28 ,  H04L12/44 ,  H04N7/173 ,  H04J3/06

CPC classification number: H04L5/143 ,  H04J1/12 ,  H04J3/1694 ,  H04L12/2801 ,  H04L12/2854 ,  H04L5/26 ,  H04N2007/17381

Abstract: A computer network for high-speed data communication, has a data transmission cable with a root and at least one leaf node wherein the upstream transmission is synchronized by information received on a downstream channel. Each client station receives data on a first frequency band, and transmits data on a second frequency band according to synchronization signals received on the first frequency band. The client station's transmission packets may include requests for reserved slots on the second frequency band for subsequent transmissions, and the SCS has a scheduler operable to determine a start time for requested reserved slots, and transmits the start time for the requested reserved slots. The client stations are operable to wait to continue transmission after waiting for the start time.

Abstract translation: 一种用于高速数据通信的计算机网络，具有根和至少一个叶节点的数据传输电缆，其中上游传输由在下游信道上接收的信息同步。 每个客户站在第一频带上接收数据，并且根据在第一频带上接收的同步信号在第二频带上发送数据。 客户站的传输分组可以包括在第二频带上对后续传输的保留时隙的请求，并且SCS具有可用于确定所请求的保留时隙的开始时间的调度器，并且发送所请求的保留时隙的开始时间。 在等待开始时间之后，客户站可操作以等待继续发送。

公开(公告)号：US5150379A

公开(公告)日：1992-09-22

申请号：US766692

申请日：1991-09-27

Applicant: Richard A. Baugh ,  Ran-Fun Chiu ,  Darlene L. Hart ,  Merban Jam ,  Sui-hing Leung

Inventor： Richard A. Baugh ,  Ran-Fun Chiu ,  Darlene L. Hart ,  Merban Jam ,  Sui-hing Leung

IPC: G11B5/035 ,  G11B5/09 ,  G11B20/10 ,  G11B20/24 ,  H04L25/03

CPC classification number: H04L25/03057 ,  G11B20/10009 ,  G11B20/24 ,  G11B5/035 ,  G11B5/09 ,  H04L25/03114 ,  H04L2025/03369 ,  H04L2025/03496 ,  H04L2025/03617

Abstract: Signal processing system for reducing error due to intersymbol interference and other noise, the system having a feedforward equalizer adaptively responsive to a first error signal (e.sub.n) and having a noise decorrelator adaptively responsive to an adjusting signal (q.sub.n) derived from the first error signal. In a preferred embodiment the source of the signal (S.sub.n) is a magnetic disk having encoded data thereon. The feedforward equalizer reduces intersymbol interference. A decision device connected to the feedforward equalizer is coupled to connect the signal (X.sub.n) from the feedforward equalizer into a stream (d.sub.n) of data samples having a limited number of predetermined signal levels. The first error signal is the difference between signal levels of data samples in the stream and the output of the feedforward equalizer. The first error signal is utilized to adjust the feedforward equalizer and to provide an input to the noise decorrelator. The noise decorrelator is an adaptive multi-tap assembly having a summing junction at the decorrelator output to provide a predicted noise signal (e.sub.pn) to the output signal of the feedforward equalizer. The adjusting signal which adaptively adjusts tap weights of the noise decorrelator is the difference between the first error signal and the predicted noise signal.

公开(公告)号：US4052557A

公开(公告)日：1977-10-04

申请号：US600608

申请日：1975-07-31

Applicant: Ran-Fun Chiu ,  James Bryon Sherman ,  Judson Truman Gilbert

Inventor： Ran-Fun Chiu ,  James Bryon Sherman ,  Judson Truman Gilbert

IPC: H04B3/06 ,  H04L27/22 ,  H04L27/38 ,  H04L27/24

CPC classification number: H04L27/22

Abstract: In a phase-modulated communication system utilizing voice-band communication channels wherein phase-jumps may be experienced, a phase-jump detector indicates the occurrence of such phase-jumps. A phase-jump corrector responds to the persistence of a phase-jump condition by correcting for it without requiring shut-down and complete reequalization of the transmission channel. Monitoring of the incoming signal for phase-jump occurrence provides a convenient signal quality indication that represents the magnitude of the error in the X and Y components of each received symbol.