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458 条记录 (耗时 0.021 秒)

    Liquid crystal compound and compositions containing same
    81.
    发明授权
    Liquid crystal compound and compositions containing same 失效
    液晶化合物及其组合物

    公开(公告)号：US4525033A

    公开(公告)日：1985-06-25

    申请号：US328155

    申请日：1981-12-07

    申请人： Tadashi Ota

    发明人： Tadashi Ota

    IPC分类号： A61N7/00 ,  C09K19/30 ,  C09K19/42 ,  G02F1/13 ,  C09K3/34

    CPC分类号： A61N7/00 ,  C09K19/3068 ,  C09K19/42

    摘要： Liquid crystal compounds which are para-substituted phenyl esters of para-substituted cyclohexyl carboxylic acid, are effective in compositions for use in liquid crystal display devices, particularly for operation in the multiplexing mode. The cyanophenyl esters may be used in a wide variety of compositions. The compounds are stable, inert to moisture, light and oxygen and have low viscosity. Moreover, they can be used in compositions using the guest-host effect.

    摘要翻译： 作为对位取代的环己基羧酸的对位取代的苯基酯的液晶化合物在用于液晶显示装置的组合物中是有效的，特别是在复用模式下操作。 氰基苯基酯可以以各种各样的组合物使用。 这些化合物是稳定的，对潮湿，光和氧是惰性的，粘度低。 此外，它们可以用于使用客体主体效应的组合物中。

    FSK Demodulator employing a switched capacitor filter and period counters
    84.
    发明授权
    FSK Demodulator employing a switched capacitor filter and period counters 失效
    FSK解调器采用开关电容滤波器和周期计数器

    公开(公告)号：US4517519A

    公开(公告)日：1985-05-14

    申请号：US318496

    申请日：1981-11-05

    申请人： Fumiaki Mukaiyama

    发明人： Fumiaki Mukaiyama

    IPC分类号： H03H19/00 ,  H04L27/156 ,  H03D3/00 ,  H04L27/14

    CPC分类号： H03H19/004 ,  H04L27/1563

    摘要： An FSK demodulation circuit especially suited for integrated construction is provided. The demodulating circuit uses N counters and a counter selector circuit for sequentially switching the counters at every zero-cross point in the received FSK signal. Sensitivity of demodulation is improved by N-time zero-cross detection rather than counting the time between two adjacent zero-cross points. The FSK demodulation circuit uses a Switched Capacitor Bandpass Filter whose characteristics are changed by changing the frequency of an internal clock using simple dividing circuitry.

    摘要翻译： 提供了一种特别适合于一体化结构的FSK解调电路。 解调电路使用N个计数器和计数器选择器电路，用于在所接收的FSK信号中的每个零交叉点顺序地切换计数器。 通过N次零交叉检测来提高解调的灵敏度，而不是计算两个相邻零交叉点之间的时间。 FSK解调电路使用开关电容带通滤波器，其特性通过使用简单分频电路改变内部时钟的频率来改变。

    Magnetic head for perpendicular magnetization recording
    87.
    发明授权
    Magnetic head for perpendicular magnetization recording 失效
    用于垂直磁化记录的磁头

    公开(公告)号：US4513337A

    公开(公告)日：1985-04-23

    申请号：US602621

    申请日：1984-02-27

    申请人： Shin Shibata ,  Akira Aoyama ,  Tetsuya Mino

    发明人： Shin Shibata ,  Akira Aoyama ,  Tetsuya Mino

    IPC分类号： G11B5/127 ,  G11B5/27 ,  G11B5/22

    CPC分类号： G11B5/1278

    摘要： A magnetic head for perpendicular magnetization recording especially suitable for operation from only one side of a magnetic tape includes a central magnetic pole surrounded in spaced relationship by a peripheral magnetic pole. An exciting coil is wound around the central magnetic pole for maintaining the central and peripheral magnetic pole at different magnetic potentials. Both magnetic poles are located on the same side of a multi-layer magnetic recording medium to be magnetized by the recording head.

    摘要翻译： 用于垂直磁化记录的磁头特别适合仅从磁带的一侧进行操作，包括由外围磁极间隔开的中心磁极。 励磁线圈缠绕在中心磁极上，用于将中心和外围磁极保持在不同的磁势。 两个磁极位于由记录头磁化的多层磁记录介质的同一侧。

    Synchronizing circuit for matrix television set
    88.
    发明授权
    Synchronizing circuit for matrix television set 失效
    矩阵电视机同步电路

    公开(公告)号：US4496977A

    公开(公告)日：1985-01-29

    申请号：US497489

    申请日：1983-05-24

    申请人： Masayuki Ikeda

    发明人： Masayuki Ikeda

    IPC分类号： H04N3/12 ,  H04N3/14 ,  H04N5/08 ,  H04N5/12 ,  H04N5/66 ,  H04N5/04

    CPC分类号： H04N5/08 ,  H04N3/12

    摘要： A synchronizing circuit especially suitable for a matrix television set using a flat display, such as comprised of liquid crystals, light emitting diodes or electro-luminescent elements in place of a cathode ray tube, is provided. Signals necessary for horizontal and vertical scannings, or the like, are obtained by dividing the signal from an oscillator circuit. The frequency of the oscillator circuit does not equal that of the horizontal scanning signal, that is, in the order of 16 KHz. Phase comparison is performed on a horizontal synchronizing signal and a scanning signal, which is obtained by dividing the signal from the oscillator circuit, to apply negative feedback to the oscillator circuit whereby synchronization is performed. The oscillator is voltage controlled. The circuit is fabricated in a substantially integrated construction using few external parts.

    摘要翻译： 提供了一种特别适用于使用诸如液晶，发光二极管或电致发光元件代替阴极射线管的平面显示器的矩阵电视机的同步电路。 通过对来自振荡器电路的信号进行分频来获得水平和垂直扫描等所需的信号。 振荡电路的频率不等于水平扫描信号的频率，即16KHz的数量级。 通过对来自振荡电路的信号进行分频而获得的水平同步信号和扫描信号进行相位比较，从而将负反馈施加到振荡器电路，由此进行同步。 振荡器是电压控制的。 该电路采用几乎没有外部部件的基本上一体化的结构制造。

    Improved ribbon mask and guide for wire dot printers
    89.
    发明授权
    Improved ribbon mask and guide for wire dot printers 失效
    改进了丝印打印机的带状面罩和导轨

    公开(公告)号：US4492484A

    公开(公告)日：1985-01-08

    申请号：US407859

    申请日：1982-08-13

    申请人： Hiroyuki Akazawa ,  Kazue Yoshiie

    发明人： Hiroyuki Akazawa ,  Kazue Yoshiie

    IPC分类号： B41J11/62 ,  B41J31/12 ,  B41J35/06 ,  B41J35/26 ,  B41J35/04

    CPC分类号： B41J31/12 ,  B41J35/06 ,  B41J35/26

    摘要： A printing device for use in a wire dot printer having a plurality of printing wires. The printing device includes a frame and a carriage slidably supported on the frame for lateral translation thereacross. A printing head is supported on the carriage and includes a nose member which supports the plurality of printing wires. First and second holding members are disposed on the carriage so that the nose member is intermediate the first and second holding members. A ribbon mask constructed from an elastic material is disposed on the nose member. The ribbon mask is removably held between the first and second holding members and extends across the nose member.

    摘要翻译： 一种用于具有多个印刷线的有线打印机的打印装置。 打印装置包括一个框架和一个可滑动地支撑在框架上的支架，用于横向横向移动。 打印头支撑在滑架上，并且包括支撑多个打印线的鼻部构件。 第一和第二保持构件设置在滑架上，使得鼻部构件在第一和第二保持构件之间。 由弹性材料构成的带状掩模设置在鼻部构件上。 带状掩模可移除地保持在第一和第二保持构件之间并且延伸穿过鼻构件。

    Chattering preventive circuit
    90.
    发明授权
    Chattering preventive circuit 失效
    颤动预防电路

    公开(公告)号：US4479065A

    公开(公告)日：1984-10-23

    申请号：US382431

    申请日：1982-05-26

    申请人： Hitomi Aizawa

    发明人： Hitomi Aizawa

    IPC分类号： H01H9/54 ,  H03K5/1252 ,  H03K5/1254 ,  H03K17/56

    CPC分类号： H03K5/1252

    摘要： A chattering preventive circuit for preventing chattering in a switch having a mechanical contact. The circuit includes a switch element for producing an input signal representative of the open and closed states of the switch and also includes a periodic pulse signal. A first memory circuit receives the input signal and the periodic pulse signal and produces a write-in signal representative of the coincidence of the input signal and the periodic pulse signal. A second memory circuit receives the write-in signal and the periodic pulse signal and produces an output signal representative of the closed state of the switch element only when the switch element is kept closed for at least a predetermined time period. The second memory circuit will not produce the next output signal representative of another closing of the switch element unless the switch element first remains open for at least a predetermined time prior to reclosing.

    摘要翻译： 用于防止具有机械接触的开关中的颤动的颤动防止电路。 该电路包括用于产生表示开关的开和关状态的输入信号的开关元件，并且还包括周期脉冲信号。 第一存储电路接收输入信号和周期脉冲信号，并产生代表输入信号和周期脉冲信号一致的写入信号。 第二存储器电路仅在开关元件保持关闭至少预定时间段时接收写入信号和周期性脉冲信号并且产生表示开关元件的闭合状态的输出信号。 第二存储器电路将不产生代表开关元件的另一个闭合的下一个输出信号，除非开关元件首先在重新闭合之前保持打开至少预定的时间。