公开(公告)号：US20100061505A1

公开(公告)日：2010-03-11

申请号：US12208835

申请日：2008-09-11

Applicant: Albert W. Wegener ,  Yi Ling

Inventor： Albert W. Wegener ,  Yi Ling

IPC: A61B6/00

CPC classification number: G06T9/20 ,  A61B6/032 ,  H03M7/30 ,  H04N19/124 ,  H04N19/15 ,  H04N19/162 ,  H04N19/172 ,  H04N19/46 ,  H04N19/593 ,  H04N19/80 ,  H04N19/85 ,  H04N19/91

Abstract: A compression subsystem for a computed tomography system compresses projection data to for efficient data transfer and storage. The compression includes detecting edges in the projection data corresponding to the object being imaged to set boundaries for compression operations. The edge detection compares difference samples to positive and negative thresholds to determine the boundaries. The projection samples or the difference samples are compressed between the boundaries. The boundaries are encoded and included in the compressed data. The compressed samples are decompressed prior to image reconstruction processing. Decompression includes decoding the compressed samples and the boundary values. This abstract does not limit the scope of the invention as described in the claims.

Abstract translation: 用于计算机断层摄影系统的压缩子系统压缩投影数据以进行有效的数据传输和存储。 压缩包括检测与被成像对象相对应的投影数据中的边缘，以设置用于压缩操作的边界。 边缘检测将差分样本与正和负阈值进行比较，以确定边界。 投影样本或差分样本在边界之间被压缩。 边界被编码并包含在压缩数据中。 在图像重建处理之前对压缩的样本进行解压缩。 解压缩包括对压缩样本和边界值进行解码。 该摘要并不限制如权利要求中所述的本发明的范围。

公开(公告)号：US20120176966A1

公开(公告)日：2012-07-12

申请号：US13343636

申请日：2012-01-04

Applicant: Yi Ling

Inventor： Yi Ling

IPC: H04W4/00

CPC classification number: H04B1/40 ,  H04L25/03 ,  H04L27/2615 ,  H04L27/2628 ,  H04L27/2647 ,  H04W88/085

Abstract: A method and apparatus provide signal compression for transfer over serial data links in a base transceiver system (BTS) of a wireless communication network. For the uplink, an RF unit of the BTS applies frequency domain compression of baseband signal samples, resulting from analog to digital conversion of received analog signals followed by digital downconversion, forming compressed coefficients. After transfer over the serial data link, the baseband processor then applies frequency domain decompression to the compressed coefficients prior to normal signal processing. For the downlink, the baseband processor applies frequency domain compression of baseband signal samples and transfers the compressed coefficients to the RF unit. The RF unit applies frequency domain decompression to the compressed coefficients prior to digital upconversion and digital to analog conversion, generating the analog signal for transmission over the antenna. This abstract does not limit the scope of the invention as described in the claims.

Abstract translation: 一种方法和装置为无线通信网络的基站收发器系统（BTS）中的串行数据链路提供信号压缩。 对于上行链路，BTS的RF单元对基带信号样本进行频域压缩，由接收到的模拟信号的模数转换产生的数字下变频，形成压缩系数。 在通过串行数据链路传输之后，基带处理器在正常信号处理之前对压缩系数进行频域解压缩。 对于下行链路，基带处理器对基带信号样本进行频域压缩，并将压缩的系数传送到RF单元。 RF单元在数字上变频和数模转换之前对压缩系数应用频域解压缩，产生用于通过天线传输的模拟信号。 该摘要并不限制如权利要求中所述的本发明的范围。

公开(公告)号：US20090240804A1

公开(公告)日：2009-09-24

申请号：US12478399

申请日：2009-06-04

Applicant: Fenghua Zhao ,  Liyang Wang ,  Peng Zhou ,  Yi Ling ,  Xuegin Liu ,  Yong Yu

Inventor： Fenghua Zhao ,  Liyang Wang ,  Peng Zhou ,  Yi Ling ,  Xuegin Liu ,  Yong Yu

IPC: G06F15/173 ,  G06F12/14

CPC classification number: H04L12/1877 ,  H04L63/1416 ,  H04L63/1458

Abstract: A method for preventing IGMP packet attacks includes two levels of anti-attack steps: anti-attacking on the basis of the source IP address of an IGMP packet; and anti-attacking on the basis of the multicast group IP address of the IGMP packet. Moreover, an apparatus for preventing IGMP packet attacks is disclosed herein. In the embodiments of the present disclosure, the attacks are prevented hierarchically in light of the source address and multicast group IP of the IGMP packet, thus effectively solving network exceptions caused by malicious IGMP packets which surge in a short time.

Abstract translation: 防止IGMP报文攻击的方法包括两级防攻击步骤：根据IGMP报文的源IP地址进行防攻击; 并根据IGMP报文的组播组IP地址进行反攻击。 此外，本文公开了一种用于防止IGMP分组攻击的装置。 在本公开的实施例中，根据IGMP分组的源地址和组播组IP分层地防止攻击，从而有效地解决了在短时间内浪涌的恶意IGMP分组引起的网络异常。

公开(公告)号：US07136333B2

公开(公告)日：2006-11-14

申请号：US10770261

申请日：2004-02-02

Applicant: Terrence L. Wong ,  John L. Fan ,  David C. Lee ,  Yi Ling ,  Yung-Cheng Lo ,  Steven E. McLaughlin ,  Laura L. McPheters ,  Richard L. Martin ,  Judith C. Powelson ,  Steven R. Spielman ,  David K. Warland ,  Jonathan A. Zingman

Inventor： Terrence L. Wong ,  John L. Fan ,  David C. Lee ,  Yi Ling ,  Yung-Cheng Lo ,  Steven E. McLaughlin ,  Laura L. McPheters ,  Richard L. Martin ,  Judith C. Powelson ,  Steven R. Spielman ,  David K. Warland ,  Jonathan A. Zingman

IPC: G11B15/52

CPC classification number: G11B20/1252 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/00745 ,  G11B7/013 ,  G11B20/10009 ,  G11B20/1403 ,  G11B20/1833 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B2020/1222 ,  G11B2020/1268 ,  G11B2020/1275 ,  G11B2020/1287 ,  G11B2220/20 ,  G11B2220/2537 ,  H03M13/00 ,  H03M13/23

Abstract: A system and method are disclosed for reading a multilevel signal from an optical disc. The method includes reading a raw analog data signal from a disc using an optical detector and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal and correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.

Abstract translation: 公开了一种用于从光盘读取多电平信号的系统和方法。 该方法包括使用光学检测器从盘读取原始模拟数据信号并调整原始模拟数据信号的幅度。 从幅度调整模拟数据信号中恢复定时信号，并通过处理原始模拟数据信号和定时信号对原始模拟数据信号的幅度调制进行校正。

公开(公告)号：US08989088B2

公开(公告)日：2015-03-24

申请号：US13476862

申请日：2012-05-21

Applicant: Yi Ling

Inventor： Yi Ling

IPC: H04W4/00 ,  H04J11/00 ,  H04W88/08 ,  H03M7/30 ,  H04L27/26

CPC classification number: H04W88/085 ,  H03M7/30 ,  H04L27/2607 ,  H04L27/265

Abstract: A method and apparatus provides OFDM signal compression for transfer over serial data links in a base transceiver system (BTS) of a wireless communication network. For the uplink, an RF unit of the BTS applies OFDM cyclic prefix removal and OFDM frequency transformation of the baseband signal samples followed by frequency domain compression of the baseband signal samples, resulting from analog to digital conversion of received analog signals followed by digital downconversion, forming compressed coefficients. After transfer over the serial data link, the baseband processor applies frequency domain decompression to the compressed coefficients prior to further signal processing. For the downlink, the RF unit performs frequency domain decompression of the compressed coefficients and applies OFDM inverse frequency transformation of the decompressed coefficients and OFDM cyclic prefix insertion prior to digital upconversion and digital to analog conversion, generating the analog signal for transmission over the antenna.

Abstract translation: 方法和装置提供用于在无线通信网络的基站收发器系统（BTS）中的串行数据链路上进行传输的OFDM信号压缩。 对于上行链路，BTS的RF单元对基带信号样本进行OFDM循环前缀去除和OFDM频率变换，随后是基带信号采样的频域压缩，由接收的模拟信号的模数转换，随后进行数字下变频， 形成压缩系数。 在通过串行数据链路传输之后，基带处理器在进一步信号处理之前对压缩系数应用频域解压缩。 对于下行链路，RF单元执行压缩系数的频域解压缩，并且在数字上变频和数模转换之前应用解压缩系数和OFDM循环前缀插入的OFDM逆频变换，生成模拟信号以在天线上传输。

公开(公告)号：US20100070836A1

公开(公告)日：2010-03-18

申请号：US12208839

申请日：2008-09-11

Applicant: Albert W. Wegener ,  Yi Ling

Inventor： Albert W. Wegener ,  Yi Ling

IPC: G06F17/30 ,  G06F11/00

CPC classification number: G06T9/00 ,  A61B6/032 ,  A61B6/4078 ,  A61B6/4233 ,  A61B6/56

Abstract: A compression subsystem for a computed tomography system compresses projection data to for efficient data transfer and storage. The compression includes applying an attenuation profile to an array of projection data samples. The attenuation profile is a function of sample coordinates and determines attenuation values applied to the samples. The attenuated samples are encoded and packed for data transfer. Alternatively, difference operators are applied to the attenuated samples and the differences are encoded. The average number of bits per compressed sample is monitored and the attenuation profiles can be modified to achieve a desired number of bits per compressed sample. The compressed samples are decompressed prior to image reconstruction processing. Decompression includes decoding the compressed samples and applying a gain profile to the decoded samples to restore the original dynamic range. This abstract does not limit the scope of the invention as described in the claims.

Abstract translation: 用于计算机断层摄影系统的压缩子系统压缩投影数据以进行有效的数据传输和存储。 压缩包括将衰减分布应用于投影数据样本阵列。 衰减曲线是样本坐标的函数，并确定应用于样本的衰减值。 衰减的样本被编码和打包用于数据传输。 或者，将差分运算符应用于衰减的样本，并对差异进行编码。 监视每个压缩样本的平均位数，并且可以修改衰减曲线，以实现每个压缩样本所需的位数。 在图像重建处理之前对压缩样本进行解压缩。 解压缩包括对压缩样本进行解码并将增益曲线应用于解码样本以恢复原始动态范围。 该摘要并不限制如权利要求中所述的本发明的范围。

公开(公告)号：US06657933B2

公开(公告)日：2003-12-02

申请号：US09910464

申请日：2001-07-19

Applicant: Terrence L. Wong ,  John L. Fan ,  David C. Lee ,  Yi Ling ,  Yung-Cheng Lo ,  Steven W. McLaughlin ,  Laura L. McPheters ,  Richard L. Martin ,  Judith C. Powelson ,  Steven R. Spielman ,  David K. Warland ,  Jonathan A. Zingman

Inventor： Terrence L. Wong ,  John L. Fan ,  David C. Lee ,  Yi Ling ,  Yung-Cheng Lo ,  Steven W. McLaughlin ,  Laura L. McPheters ,  Richard L. Martin ,  Judith C. Powelson ,  Steven R. Spielman ,  David K. Warland ,  Jonathan A. Zingman

IPC: G11B509

CPC classification number: G11B20/1252 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/00745 ,  G11B7/013 ,  G11B20/10009 ,  G11B20/1403 ,  G11B20/1833 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B2020/1222 ,  G11B2020/1268 ,  G11B2020/1275 ,  G11B2020/1287 ,  G11B2220/20 ,  G11B2220/2537 ,  H03M13/00 ,  H03M13/23

Abstract: A system and method are disclosed for reading a multilevel signal from an optical disc. The method includes reading a raw analog data signal from a disc using an optical detector and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal and correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.

公开(公告)号：US20120250740A1

公开(公告)日：2012-10-04

申请号：US13476862

申请日：2012-05-21

Applicant: Yi Ling

Inventor： Yi Ling

IPC: H04B1/38

CPC classification number: H04W88/085 ,  H03M7/30 ,  H04L27/2607 ,  H04L27/265

Abstract: A method and apparatus provides OFDM signal compression for transfer over serial data links in a base transceiver system (BTS) of a wireless communication network. For the uplink, an RF unit of the BTS applies OFDM cyclic prefix removal and OFDM frequency transformation of the baseband signal samples followed by frequency domain compression of the baseband signal samples, resulting from analog to digital conversion of received analog signals followed by digital downconversion, forming compressed coefficients. After transfer over the serial data link, the baseband processor applies frequency domain decompression to the compressed coefficients prior to further signal processing. For the downlink, the RF unit performs frequency domain decompression of the compressed coefficients and applies OFDM inverse frequency transformation of the decompressed coefficients and OFDM cyclic prefix insertion prior to digital upconversion and digital to analog conversion, generating the analog signal for transmission over the antenna.

Abstract translation: 方法和装置提供用于在无线通信网络的基站收发器系统（BTS）中的串行数据链路上进行传输的OFDM信号压缩。 对于上行链路，BTS的RF单元对基带信号样本进行OFDM循环前缀去除和OFDM频率变换，随后是基带信号采样的频域压缩，由接收的模拟信号的模数转换，随后进行数字下变频， 形成压缩系数。 在通过串行数据链路传输之后，基带处理器在进一步信号处理之前对压缩系数应用频域解压缩。 对于下行链路，RF单元执行压缩系数的频域解压缩，并且在数字上变频和数模转换之前应用解压缩系数和OFDM循环前缀插入的OFDM逆频变换，生成模拟信号以在天线上传输。

公开(公告)号：US08045811B2

公开(公告)日：2011-10-25

申请号：US12352116

申请日：2009-01-12

Applicant: Albert W. Wegener ,  Carl R. Crawford ,  Yi Ling

Inventor： Albert W. Wegener ,  Carl R. Crawford ,  Yi Ling

IPC: G06K9/36

CPC classification number: G06T9/00 ,  H04N19/15 ,  H04N19/17 ,  H04N19/196

Abstract: A computed tomography system has a stationary part, a rotatable part mounted for rotation around an object to be examined and an interface between the stationary part and the rotatable part. The rotatable part includes an x-ray source, a sensor array for detecting x-rays passing through the object to produce projection data samples, a compressor that compresses the projection data samples and a storage device that stores the compressed samples. The storage device on the rotatable part can include one or more solid state drives. For image reconstruction, the compressed samples are retrieved from the storage device, transferred across the interface to the stationary part. A decompressor at the stationary part decompresses the received compressed samples and provides decompressed samples to the image reconstruction processor. This abstract does not limit the scope of the invention as described in the claims.

Abstract translation: 计算机断层摄影系统具有静止部分，可旋转部分安装成围绕待检查物体旋转，以及固定部分和可旋转部分之间的界面。 可旋转部分包括X射线源，用于检测通过物体的X射线以产生投影数据样本的传感器阵列，压缩投影数据样本的压缩器和存储压缩样本的存储装置。 可旋转部件上的存储装置可以包括一个或多个固态驱动器。 对于图像重建，从存储设备检索压缩样本，通过接口传输到固定部分。 固定部分的解压缩器解压缩接收到的压缩样本，并将解压缩的样本提供给图像重构处理器。 该摘要并不限制如权利要求中所述的本发明的范围。

公开(公告)号：US07916830B2

公开(公告)日：2011-03-29

申请号：US12208835

申请日：2008-09-11

Applicant: Albert W. Wegener ,  Yi Ling

Inventor： Albert W. Wegener ,  Yi Ling

IPC: A61B6/00

CPC classification number: G06T9/20 ,  A61B6/032 ,  H03M7/30 ,  H04N19/124 ,  H04N19/15 ,  H04N19/162 ,  H04N19/172 ,  H04N19/46 ,  H04N19/593 ,  H04N19/80 ,  H04N19/85 ,  H04N19/91

Abstract: A compression subsystem for a computed tomography system compresses projection data to for efficient data transfer and storage. The compression includes detecting edges in the projection data corresponding to the object being imaged to set boundaries for compression operations. The edge detection compares difference samples to positive and negative thresholds to determine the boundaries. The projection samples or the difference samples are compressed between the boundaries. The boundaries are encoded and included in the compressed data. The compressed samples are decompressed prior to image reconstruction processing. Decompression includes decoding the compressed samples and the boundary values. This abstract does not limit the scope of the invention as described in the claims.

Abstract translation: 用于计算机断层摄影系统的压缩子系统压缩投影数据以用于有效的数据传输和存储。 压缩包括检测与被成像对象相对应的投影数据中的边缘，以设置用于压缩操作的边界。 边缘检测将差分样本与正和负阈值进行比较，以确定边界。 投影样本或差分样本在边界之间被压缩。 边界被编码并包含在压缩数据中。 在图像重建处理之前对压缩样本进行解压缩。 解压缩包括对压缩样本和边界值进行解码。 该摘要并不限制如权利要求中所述的本发明的范围。