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    • 105. 发明申请
    • STYRENE-BASED RESIN BLEND COMPRISING PARTICLES HAVING A TRI-LAYER STRUCTURE AND THE PREPARATION METHOD THEREOF
    • 基于苯乙烯的树脂混合包含具有三层结构的颗粒及其制备方法
    • US20140206820A1
    • 2014-07-24
    • US14114882
    • 2012-04-13
    • Ming ChenShuo WangHuixuan ZhangShulai LuChunyu ZhangZhichen CaoJianxun Pang
    • Ming ChenShuo WangHuixuan ZhangShulai LuChunyu ZhangZhichen CaoJianxun Pang
    • C08F257/02
    • C08F257/02C08F279/02C08F285/00C08L55/00C08F220/44
    • The present invention relates to a styrene resin blend having three-layer-structured particles, a method for preparing same, and an application thereof. In parts by weight, 100 parts of a vinyl aromatic compound, 0.1 to 10 parts of an initiator, 2 to 10 parts of an emulsifier, 100 to 300 parts of deionized water, and 0.1 to 10 parts of a cross-linking agent are polymerized at a temperature between 50° C. to 85° C. to acquire a core seeded emulsion; 15 to 70 parts of the core seeded emulsion, 0.1 to 10 parts of the initiator, 2 to 10 parts of the emulsifier, 80 to 300 parts of deionized water, and 30 to 85 parts of butadiene or another rubber monomers are reacted to acquire a two-layer particle emulsion; 40 to 90 parts of the two-layer particle emulsion, 10 to 70 parts of monomers of the vinyl aromatic compound, 10 to 60 parts of monomers of a vinyl cyanide compound, 2 to 10 parts of the emulsifier, and 80 to 300 parts of deionized water are reacted to acquire the blend; the impact strength thereof reaches 300 J/m, and the tensile strength is 53 MPa.
    • 本发明涉及具有三层结构的颗粒的苯乙烯树脂共混物,其制备方法及其应用。 以重量份计,将100份乙烯基芳族化合物,0.1至10份引发剂,2至10份乳化剂,100至300份去离子水和0.1至10份交联剂聚合 在50℃至85℃之间的温度下获得核心种子乳液; 将核心种子乳液15〜70份,引发剂0.1〜10份,乳化剂2〜10份,去离子水80〜300份,丁二烯或其他橡胶单体30〜85份反应,得到 两层颗粒乳液; 40〜90份双层颗粒乳液,10〜70份乙烯基芳香族化合物单体,10〜60份乙烯基氰化合物单体,2〜10份乳化剂,80〜300份 去离子水反应获得共混物; 其冲击强度达到300J / m,拉伸强度为53MPa。
    • 107. 发明授权
    • Adjustable level shifter
    • 可调电平转换器
    • US08624628B1
    • 2014-01-07
    • US13568227
    • 2012-08-07
    • Ming ChenShu Dong Cheng
    • Ming ChenShu Dong Cheng
    • H03K19/0175
    • H03K19/018521H03K19/018585
    • Described embodiments include a level shifter that provides a voltage level shift to applied signals, the amount of voltage shift being accurately controlled and independent of PVT. The level shifter has first transistor configured as a voltage follower with the gate coupled to an input terminal of the shifter and the source coupled to a node, a diode-connected transistor coupled between the node and an output terminal of the circuit, a first controlled current source coupled to the node, and a second controlled current source coupled to the output terminal. A controller receives a bandgap-stabilized voltage, squares the stabilized voltage to produce a control signal that controls the first and second controlled current sources. The voltage shift is proportional to a digitally-controlled scale factor (K) times the stabilized voltage. The ratio of the current from the first current source to the second current source is (K+1)/K.
    • 所描述的实施例包括电平移位器,其向施加的信号提供电压电平移位,电压漂移的量被精确地控制并且不依赖于PVT。 电平移位器具有被配置为电压跟随器的第一晶体管,栅极耦合到移位器的输入端并且源极耦合到节点,耦合在节点和电路的输出端之间的二极管连接的晶体管,第一受控 耦合到节点的电流源和耦合到输出端的第二受控电流源。 控制器接收带隙稳定的电压,对稳定的电压进行平方以产生控制第一和第二受控电流源的控制信号。 电压偏移与数字控制的比例因子(K)成倍比稳定电压。 来自第一电流源的电流与第二电流源的比率为(K + 1)/ K。
    • 110. 发明授权
    • Portable radio frequency identification (RFID) reader
    • 便携式射频识别(RFID)阅读器
    • US08461965B2
    • 2013-06-11
    • US12686922
    • 2010-01-13
    • Ming ChenFong ShiKenneth G. Voyce
    • Ming ChenFong ShiKenneth G. Voyce
    • H04Q5/22
    • G01S13/4445G01S3/043G01S13/4454G01S13/75
    • A particular portable radio frequency identification (RFID) reader includes an active antenna array including a plurality of antenna elements to receive RFID signals from RFID devices. The antenna elements include control circuitry to control a beam pattern generated by the active antenna array. The portable RFID reader further includes sum circuitry and difference circuitry. The sum circuitry is operable to determine a sum signal by summing the RFID signals received by at least two of the plurality of antenna elements. The difference circuitry is operable to determine a difference signal between the RFID signals received by at least two of the plurality of antenna elements. The portable RFID reader also includes a controller to electronically steer the beam pattern and to determine a direction from the RFID reader to a particular RFID device.
    • 特定便携式射频识别(RFID)读取器包括有源天线阵列,其包括用于从RFID设备接收RFID信号的多个天线元件。 天线元件包括用于控制由有源天线阵列产生的波束图案的控制电路。 便携式RFID读取器还包括和电路和差分电路。 总和电路可操作以通过将由多个天线元件中的至少两个接收的RFID信号相加来确定和信号。 差分电路可操作以确定由多个天线元件中的至少两个天线元件接收的RFID信号之间的差分信号。 便携式RFID读取器还包括控制器,用于电子地操纵光束图案并确定从RFID读取器到特定RFID设备的方向。