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17 条记录 (耗时 0.017 秒)

    Digital input stage for an ultrasound apparatus
    2.
    发明授权
    Digital input stage for an ultrasound apparatus 失效
    超声波设备的数字输入级

    公开(公告)号：US4975885A

    公开(公告)日：1990-12-04

    申请号：US413293

    申请日：1989-09-27

    申请人： Dietrich Hassler ,  Erhard Schmidt ,  Peter Wegener

    发明人： Dietrich Hassler ,  Erhard Schmidt ,  Peter Wegener

    IPC分类号： G01S7/526 ,  A61B8/06 ,  G01S7/52 ,  G01S15/52 ,  G01S15/89

    CPC分类号： G01S7/5205 ,  G01S15/52 ,  G01S15/8979 ,  G01S7/52028 ,  G01S7/52033

    摘要： An ultrasound apparatus has a transducer array which includes a number of individual transducer, each transducer having a channel exclusively associated therewith. In an input stage for the ultrasound apparatus, an analog stage is provided in each channel to which the echo signals for a transducer associated with that channel are supplied. This analog stage concludes with an analog-to-digital converter in each channel. The output of the analog-to-digital converter is connected to a further processing circuit in each channel for the acquisition of Doppler signals of moving target echoes. A combined ultrasound imaging device and Doppler device is thus achieved, which allows the acquisition of Doppler signals with the digital input technology of the ultrasound imaging processing circuit. This permits expansion of digital operating RF input components of imaging devices to include Doppler signal processing.

    摘要翻译： 超声波装置具有包括多个单独换能器的换能器阵列，每个换能器具有与之完全相关的通道。 在超声波装置的输入级中，在每个通道中提供模拟级，与该通道相关联的换能器的回波信号被提供给该级。 该模拟级结束于每个通道中的模拟 - 数字转换器。 模数转换器的输出连接到每个通道中的另一个处理电路，用于获取移动目标回波的多普勒信号。 因此实现了组合的超声成像装置和多普勒装置，其允许利用超声成像处理电路的数字输入技术来采集多普勒信号。 这允许扩大成像设备的数字操作射频输入组件以包括多普勒信号处理。

    Soluble, electrically conductive polymers, process for preparing them, and their use
    5.
    发明授权
    Soluble, electrically conductive polymers, process for preparing them, and their use 失效
    可溶性导电聚合物，制备方法及其使用

    公开(公告)号：US5093033A

    公开(公告)日：1992-03-03

    申请号：US88662

    申请日：1987-08-24

    申请人： Michael Feldhues ,  Thomas Mecklenburg ,  Peter Wegener ,  Gunther Kampf

    发明人： Michael Feldhues ,  Thomas Mecklenburg ,  Peter Wegener ,  Gunther Kampf

    IPC分类号： C08G61/10 ,  C08G61/12 ,  C08L101/00 ,  C09D165/00 ,  H01B1/12

    CPC分类号： C08G61/126 ,  H01B1/127 ,  Y10T428/2933 ,  Y10T428/31504

    摘要： The invention relates to intrinsically electrically conductive polymers, preferably oligomers, which, in the oxidized form, are completely soluble in dipolar aprotic solvents at room temperature and which contain structural units which are derived from at least one monomer of the formula (I) ##STR1## in which R.sup.1 is a C.sub.1 -C.sub.2 -alkoxy group or --O(CH.sub.2 CH.sub.2 O).sub.n CH.sub.3 with n=1 to 4 and R.sup.2 is a hydrogen atom, a C.sub.1 -C.sub.12 -alkyl group, a C.sub.1 -C.sub.12 -alkoxy group or --O(CH.sub.2 CH.sub.2 O).sub.n CH.sub.3 with n=1 to 4, or R.sup.1 and R.sup.2 together are --O(CH.sub.2).sub.m --CH.sub.2 or --O(CH.sub.2).sub.m --O-- with m=1 to 12. The invention also relates to a process for the preparation of these polymers by electrochemical polymerization of at least one monomer of this formula (I) in the presence of a conductive salt, the anode having a specific surface area of at least 0.01 m.sup.2 /g and preferably a gauze, sponge, fabric or felt structure, the electrolyte solvent being dipolar and aprotic and the electrolyte system being moved only slightly or not at all relative to the anode. The polymers according to the invention can readily be used especially for coating purposes.

    摘要翻译： 本发明涉及本征导电聚合物，优选低聚物，其以氧化形式在室温下完全溶于偶极非质子溶剂中，并且其含有衍生自式（I）的至少一种单体的结构单元

    Process for the manufacture of cyanogen
    8.
    发明授权
    Process for the manufacture of cyanogen 失效
    氰原的制造工艺

    公开(公告)号：US3997653A

    公开(公告)日：1976-12-14

    申请号：US583516

    申请日：1975-06-04

    申请人： Wilhelm Riemenschneider ,  Peter Wegener

    发明人： Wilhelm Riemenschneider ,  Peter Wegener

    IPC分类号： C01C3/00

    CPC分类号： C01C3/003

    摘要： Cyanogen is produced by catalytic oxidation of hydrogen cyanide with oxygen in the presence of a catalyst solution. The catalyst solution consists of aliphatic ethers or of nitriles and copper(II)nitrate and may further contain up to 20 % by weight of water.

    摘要翻译： 氰化物是通过在催化剂溶液存在下用氧气将氰化氢催化氧化制备的。 催化剂溶液由脂族醚或腈和硝酸铜（II）组成，并且还可含有至多20重量％的水。