公开(公告)号：US06754872B2

公开(公告)日：2004-06-22

申请号：US09805526

申请日：2001-03-13

申请人： Yumin Zhang ,  Robert C. Malkemes ,  Charles Reed

发明人： Yumin Zhang ,  Robert C. Malkemes ,  Charles Reed

IPC分类号： H03M1303

CPC分类号： H04L1/0625 ,  H04L1/0059 ,  H04L1/0065

摘要： A method and apparatus for reducing channel distortion in a broadband, wireless network comprising a residential communications gateway that accepts all incoming communications signals and securely broadcasts those signals throughout a residence. In one embodiment, the gateway comprises a space time block encoder to reduce the effects of multipath and at least one error correction encoder to provide error correction. The space time block encoder generates at least two space time block coded signals that are transmitted via the wireless network. Each space time block coded signal is transmitted using a different antenna.

摘要翻译： 一种用于减少宽带无线网络中的信道失真的方法和装置，包括住宅通信网关，其接收所有进入的通信信号并且在整个住宅中安全地广播这些信号。 在一个实施例中，网关包括空间时间块编码器，以减少多路径的影响和至少一个纠错编码器以提供纠错。 时空块编码器生成经由无线网络发送的至少两个空时块编码信号。 使用不同的天线发送每个时空块编码信号。

公开(公告)号：US08773096B2

公开(公告)日：2014-07-08

申请号：US13434612

申请日：2012-03-29

申请人： Shawn Wang ,  Yumin Zhang ,  Jeffrey G. Barrow

发明人： Shawn Wang ,  Yumin Zhang ,  Jeffrey G. Barrow

IPC分类号： G05F1/40 ,  G05F1/44

CPC分类号： G05F1/575

摘要： A voltage regulator includes an amplifier to generate a difference voltage responsive to a comparison of a reference voltage and a feedback voltage. An output driver is coupled to the amplifier and drives a regulated output voltage responsive to the difference voltage. An impedance circuit is coupled between the output driver and a low power source and establishes the feedback voltage responsive to a current through the impedance circuit. A variation detector is operably coupled between the regulated output voltage and the difference voltage and is configured to modify the difference voltage. In some embodiments, the difference voltage is modified responsive to a rapid change of the regulated output voltage capacitively coupled to the variation detector. In other embodiments, the difference voltage is modified responsive to a rapid change of the feedback voltage capacitively coupled to the variation detector.

摘要翻译： 电压调节器包括响应于参考电压和反馈电压的比较而产生差分电压的放大器。 输出驱动器耦合到放大器并响应于差分电压驱动稳定的输出电压。 阻抗电路耦合在输出驱动器和低电源之间，并响应于通过阻抗电路的电流建立反馈电压。 变异检测器可操作地耦合在调节的输出电压和差分电压之间，并且被配置为修改差分电压。 在一些实施例中，响应于电容耦合到变化检测器的稳压输出电压的快速变化来修改差分电压。 在其他实施例中，响应于电容耦合到变化检测器的反馈电压的快速变化来修改差分电压。

公开(公告)号：US20110288191A1

公开(公告)日：2011-11-24

申请号：US12737763

申请日：2009-06-10

申请人： Ling Wang ,  Xinxiang Zhao ,  Xinquan Shang ,  Yumin Zhang ,  Xuefeng Yan ,  Yuyan Qin

发明人： Ling Wang ,  Xinxiang Zhao ,  Xinquan Shang ,  Yumin Zhang ,  Xuefeng Yan ,  Yuyan Qin

IPC分类号： C08J9/28 ,  C08F12/32 ,  C08F12/12 ,  C08F22/14 ,  C08F12/34 ,  C08F20/06 ,  C08F20/18 ,  C08F20/44 ,  C08F12/08 ,  C08F12/36

CPC分类号： C07D501/12 ,  B01J20/267 ,  B01J20/28066 ,  B01J20/28076 ,  B01J20/28085 ,  B01J20/3064

摘要： The invention relates to macroporous absorbent resin special for extracting cephalosporin C and process for preparation. Specific surface area of such kinds of adsorbent resins is around 1000-2000 m2/g, pore volume is 1.5-2.5 ml/g. The preparation method is as follows: according to the suspension polymerization to prepare the macroporous copolymer matrix. The mixture of monomer, porogenic agent, initiator of polymerization was put into solution of dissolving some dispersant, then system was heated to 60-100 C.°, and maintained for 5-10 hours, then crosslinked macroporous copolymer matrix is obtained. With the existence of inert medium, the above described macroporous copolymer matrix reacted with Lewis acid as catalyst at 50-120 C.° though the alkylate reaction between the aromatic nucleus. The macroporous absorbent resin special for extracting cephalosporin C descried above possess advantages of high adsorption capacity, good selectivity for target substance, desorption and regeneration easily, and high purity of cephalosporin C can be obtained.

摘要翻译： 本发明涉及特别用于提取头孢菌素C的大孔吸收树脂及其制备方法。 这种吸附树脂的比表面积为约1000-2000m2 / g，孔体积为1.5-2.5ml / g。 其制备方法如下：根据悬浮聚合制备大孔共聚物基体。 将单体，致孔剂，聚合引发剂的混合物放入溶解一些分散剂的溶液中，然后将体系加热至60-100℃，保持5-10小时，得到交联的大孔共聚物基质。 随着惰性介质的存在，上述大孔共聚物基体与路易斯酸作为催化剂在50-120℃反应，尽管芳族核之间的烷基化反应。 上述特种用于提取头孢菌素C的大孔吸收树脂具有吸附能力高，目标物质选择性好，解吸和再生容易的优点，可以得到高纯度的头孢菌素C.

公开(公告)号：US06968494B2

公开(公告)日：2005-11-22

申请号：US09804877

申请日：2001-03-13

申请人： Yumin Zhang

发明人： Yumin Zhang

IPC分类号： H04B7/08 ,  H04L1/00 ,  H03M13/03

CPC分类号： H04L1/0068 ,  H04B7/0845 ,  H04L1/0013 ,  H04L1/0041 ,  H04L1/0065 ,  H04L1/0071

摘要： A method and apparatus for transmitting an input data signal over an information channel. The input data signal comprises a sequence of data blocks. A puncture coded signal is generated for each data block in the sequence of data blocks. The total number of bits in the puncture coded signal is equal to the number of bits in a particular data block plus additional error correcting bits used to perform error correction at a receiver. The number of error correcting bits is adaptively adjusted for each data block in response to a channel quality measure for the information channel.

摘要翻译： 一种用于通过信息信道发送输入数据信号的方法和装置。 输入数据信号包括数据块序列。 针对数据块序列中的每个数据块产生一个穿刺编码信号。 穿刺编码信号中的总位数等于特定数据块中的位数加上用于在接收机处执行纠错的附加纠错位。 响应于信息信道的信道质量测量，针对每个数据块自适应地调整纠错位的数量。

公开(公告)号：US08723573B1

公开(公告)日：2014-05-13

申请号：US13528387

申请日：2012-06-20

申请人： Wei Wang ,  Yumin Zhang

发明人： Wei Wang ,  Yumin Zhang

IPC分类号： H03K5/12

CPC分类号： G11C7/1057

摘要： An output driver that includes a pull-up network comprising a first plurality of resistive branches forming a first R-2R resistive ladder structure, wherein the resistive branches of the pull-up network are coupled to a high voltage supply through pull-up switching transistors. The output driver may further include a pull-down network comprising a second plurality of resistive branches forming a second R-2R resistive ladder structure, wherein the resistive branches of the pull-down network are coupled to a low voltage supply through pull-down switching transistors. The output driver includes a control circuit to selectively activate or deactivate each of the first plurality of resistive branches and to selectively activate or deactivate each of the second plurality of resistive branches.

摘要翻译： 一种包括上拉网络的输出驱动器，包括形成第一R-2R电阻梯形结构的第一多个电阻分支，其中上拉网络的电阻分支通过上拉开关晶体管耦合到高压电源 。 输出驱动器还可以包括包括形成第二R-2R电阻梯形结构的第二多个电阻分支的下拉网络，其中下拉网络的电阻分支通过下拉开关耦合到低电压电源 晶体管。 输出驱动器包括用于选择性地激活或去激活第一多个电阻分支中的每一个并且选择性地激活或去激活第二多个电阻分支中的每一个的控制电路。

公开(公告)号：US20130257402A1

公开(公告)日：2013-10-03

申请号：US13434612

申请日：2012-03-29

申请人： Shawn Wang ,  Yumin Zhang ,  Jeffrey G. Barrow

发明人： Shawn Wang ,  Yumin Zhang ,  Jeffrey G. Barrow

IPC分类号： G05F1/10

CPC分类号： G05F1/575

摘要： A voltage regulator includes an amplifier to generate a difference voltage responsive to a comparison of a reference voltage and a feedback voltage. An output driver is coupled to the amplifier and drives a regulated output voltage responsive to the difference voltage. An impedance circuit is coupled between the output driver and a low power source and establishes the feedback voltage responsive to a current through the impedance circuit. A variation detector is operably coupled between the regulated output voltage and the difference voltage and is configured to modify the difference voltage. In some embodiments, the difference voltage is modified responsive to a rapid change of the regulated output voltage capacitively coupled to the variation detector. In other embodiments, the difference voltage is modified responsive to a rapid change of the feedback voltage capacitively coupled to the variation detector.

摘要翻译： 电压调节器包括响应于参考电压和反馈电压的比较而产生差分电压的放大器。 输出驱动器耦合到放大器并响应于差分电压驱动稳定的输出电压。 阻抗电路耦合在输出驱动器和低电源之间，并响应于通过阻抗电路的电流建立反馈电压。 变异检测器可操作地耦合在调节的输出电压和差分电压之间，并且被配置为修改差分电压。 在一些实施例中，响应于电容耦合到变化检测器的稳压输出电压的快速变化来修改差分电压。 在其他实施例中，响应于电容耦合到变化检测器的反馈电压的快速变化来修改差分电压。

公开(公告)号：US20050180558A1

公开(公告)日：2005-08-18

申请号：US11062235

申请日：2005-02-17

申请人： Yumin Zhang

发明人： Yumin Zhang

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： Disclosed herein is a method and apparatus for providing echo cancellation. A plurality of reflections is received. A first strong reflection of the plurality of reflections is selected as a main path. The first strong reflection is then demodulated.

摘要翻译： 本文公开了一种用于提供回波消除的方法和装置。 接收多个反射。 选择多个反射的第一强反射作为主要途径。 然后解调第一个强反射。

公开(公告)号：US6113107A

公开(公告)日：2000-09-05

申请号：US43577

申请日：1998-05-26

申请人： Baodong Wang ,  Ping Cai ,  Chuansi Xue ,  Yumin Zhang ,  Xiaoshan Cai

发明人： Baodong Wang ,  Ping Cai ,  Chuansi Xue ,  Yumin Zhang ,  Xiaoshan Cai

IPC分类号： F02F5/00 ,  F16J9/10 ,  F16J9/16 ,  F16J9/20

CPC分类号： F16J9/10 ,  F16J9/20

摘要： This invention relates to piston compression ring assemblies, each of which consists of a main ring element and an auxiliary ring element. The assemblies can by themselves adjust the radial gaps between the assemblies and the liner, and the gaps between the assemblies and the liner, and the gaps between the assemblies and the wall of the ring groove in the piston. The two ring elements engage with each other on their flat sides, and there is a notch for accommodating lubrication oil provided in the engaging portion. The radial cuts in each ring element stagger each other by an angle of 180.degree.. The two ring elements are good sealing and lubricating, respectively, therefore they can reduce the leakage of gas and the compensation of oil, and have a long period of use. They can thus improve the efficiency and the power of internal combustion engine, and reduce the emission and the noise of the internal combustion engine.

摘要翻译： PCT No.PCT / CN96 / 00030 Sec。 371日期：1998年5月26日 102（e）日期1998年5月26日PCT提交1996年5月3日PCT公布。 公开号WO97 / 12139 日期1997年4月3日本发明涉及活塞压缩环组件，每个活塞压缩环组件由主环形元件和辅助环形元件组成。 组件本身可以调节组件和衬套之间的径向间隙，以及组件和衬套之间的间隙，以及组件之间的间隙和活塞中的环槽的壁。 两个环形元件在其平坦侧面彼此接合，并且存在用于容纳设置在接合部分中的润滑油的凹口。 每个环形元件的径向切口彼此交错180°。 两个环形元件分别具有良好的密封和润滑性，因此可以减少气体的泄漏和油的补偿，并且使用时间长。 因此，能够提高内燃机的效率和功率，并且能够降低内燃机的排放和噪音。