利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

91 条记录 (耗时 0.019 秒)

    Frequency synthesizer using a wide-band voltage controlled oscillator and a fast adaptive frequency calibration method
    52.
    发明授权
    Frequency synthesizer using a wide-band voltage controlled oscillator and a fast adaptive frequency calibration method 有权
    使用宽带压控振荡器的频率合成器和快速自适应频率校准方法

    公开(公告)号：US07154348B2

    公开(公告)日：2006-12-26

    申请号：US10942119

    申请日：2004-09-15

    申请人： Han-il Lee ,  In-chul Hwang

    发明人： Han-il Lee ,  In-chul Hwang

    IPC分类号： H03L7/00

    CPC分类号： H03L7/113 ,  H03L7/085 ,  H03L7/087 ,  H03L7/099 ,  H03L7/18

    摘要： A frequency synthesizer is provided. The frequency synthesizer includes an adaptive frequency calibration circuit and a phase locked loop (PLL). The frequency synthesizer performs in a frequency lock mode and in a phase lock mode. In the frequency lock mode, the adaptive frequency calibration circuit compares the frequency of an input signal with the frequency of an output signal of a voltage controlled oscillator of the PLL and outputs control bits as a result of the comparison. The voltage controlled oscillator has a plurality of operating characteristic curves and selects a curve from among the plurality of operating characteristic curves in response to the control bits. In the phase lock mode, the PLL controls an output phase of the voltage controlled oscillator based on a tuning voltage from the selected operating characteristic curve.

    摘要翻译： 提供频率合成器。 频率合成器包括自适应频率校准电路和锁相环（PLL）。 频率合成器在频率锁定模式和相位锁定模式下执行。 在频率锁定模式中，自适应频率校准电路将输入信号的频率与PLL的压控振荡器的输出信号的频率进行比较，并作为比较的结果输出控制位。 压控振荡器具有多个工作特性曲线，并响应于控制位选择多个操作特性曲线中的曲线。 在锁相模式下，PLL根据所选工作特性曲线的调谐电压控制压控振荡器的输出相位。

    Capacitance multiplier
    53.
    发明申请
    Capacitance multiplier 有权

    公开(公告)号：US20060273845A1

    公开(公告)日：2006-12-07

    申请号：US11506034

    申请日：2006-08-17

    申请人： Young-Jin Kim ,  In-Chul Hwang ,  Han-Il Lee ,  Jae-Heon Lee

    发明人： Young-Jin Kim ,  In-Chul Hwang ,  Han-Il Lee ,  Jae-Heon Lee

    IPC分类号： G05F1/10

    CPC分类号： H03H11/483

    摘要： A capacitance multiplier includes a self-biasing active load for generating a stable bias voltage without a separate current bias. In addition, the capacitance multiplier includes a cascode load within a multiplying section for increasing the output resistance and in turn the charging/discharging efficiency. Furthermore, the capacitance multiplier is implemented with a plurality of multiplying paths to reduce effects of noise for more stable generation of the multiplied capacitance.

    Preparing an alloy catalyst using conductive polymer coating
    54.
    发明授权
    Preparing an alloy catalyst using conductive polymer coating 有权
    使用导电聚合物涂层制备合金催化剂

    公开(公告)号：US09276270B2

    公开(公告)日：2016-03-01

    申请号：US13109407

    申请日：2011-05-17

    申请人： Bum Wook Roh ,  In Chul Hwang ,  Han Sung Kim ,  Hyung-Suk Oh

    发明人： Bum Wook Roh ,  In Chul Hwang ,  Han Sung Kim ,  Hyung-Suk Oh

    IPC分类号： B05D5/12 ,  H01M4/92 ,  B82Y30/00 ,  B82Y40/00

    CPC分类号： H01M4/921 ,  B82Y30/00 ,  B82Y40/00 ,  H01M4/926 ,  Y02E60/50

    摘要： Techniques herein prepare an alloy catalyst using a protective conductive polymer coating. More particularly, an alloy catalyst is prepared by: preparing a platinum catalyst supported on carbon; coating the surface of the platinum catalyst with a conductive polymer; supporting a transition metal salt on the coated catalyst; and heat treating the catalyst on which the transition metal salt is supported. Also, an alloy catalyst may be prepared by: preparing a platinum-transition metal catalyst supported on carbon; coating the surface of the platinum-transition metal catalyst with a conductive polymer; and heat treating the coated catalyst. Accordingly an alloy catalyst with superior dispersity can be prepared by increasing the degree of alloying of the catalyst through heat treatment while preventing the increase of catalyst particle size through carbonization of the conductive polymer. The prepared catalyst may be useful, for example, for a fuel cell electrode.

    摘要翻译： 本文的技术使用保护性导电聚合物涂层制备合金催化剂。 更具体地说，合金催化剂通过以下步骤制备：制备负载在碳上的铂催化剂; 用导电聚合物涂覆铂催化剂的表面; 在涂覆的催化剂上负载过渡金属盐; 并对其上负载有过渡金属盐的催化剂进行热处理。 此外，合金催化剂可以通过以下方法制备：制备负载在碳上的铂 - 过渡金属催化剂; 用导电聚合物涂覆铂 - 过渡金属催化剂的表面; 并对涂覆的催化剂进行热处理。 因此，通过加热催化剂的合金化程度，通过导电性聚合物的碳化来防止催化剂粒径的增加，可以制备出具有优异分散性的合金催化剂。 所制备的催化剂可用于例如燃料电池电极。

    Low noise reference circuit of improving frequency variation of ring oscillator
    58.
    发明授权
    Low noise reference circuit of improving frequency variation of ring oscillator 有权
    改善环形振荡器频率变化的低噪声参考电路

    公开(公告)号：US08405376B2

    公开(公告)日：2013-03-26

    申请号：US12625428

    申请日：2009-11-24

    申请人： In-chul Hwang ,  Myung-woon Hwang ,  Je-cheol Moon ,  Hyun-ha Jo

    发明人： In-chul Hwang ,  Myung-woon Hwang ,  Je-cheol Moon ,  Hyun-ha Jo

    IPC分类号： G05F3/16

    CPC分类号： G05F3/16

    摘要： A low noise reference voltage circuit without using an amplifier inside is capable of transforming a current IPTAT in positive proportion to absolute temperature into a voltage VPTAT in positive proportion to absolute temperature, and outputting it to a ring oscillator. The low noise reference voltage circuit improves a degradation of noise performance compared with a conventional band-gap reference voltage circuit and is in characteristic of low noise and higher PSRR.

    摘要翻译： 不使用内置放大器的低噪声基准电压电路能够将与绝对温度成正比的电流IPTAT与绝对温度正比变换为电压VPTAT，并将其输出到环形振荡器。 与传统的带隙基准电压电路相比，低噪声参考电压电路改善了噪声性能的劣化，并具有低噪声和更高的PSRR特性。

    Apparatus and method for creating macro command
    60.
    发明授权
    Apparatus and method for creating macro command 有权
    用于创建宏命令的装置和方法

    公开(公告)号：US08145803B2

    公开(公告)日：2012-03-27

    申请号：US12773375

    申请日：2010-05-04

    申请人： In-chul Hwang ,  Eun Namgung

    发明人： In-chul Hwang ,  Eun Namgung

    IPC分类号： G06F3/00 ,  G05B11/01 ,  G06F19/00

    CPC分类号： G08C17/00 ,  G08C2201/33 ,  H04N5/4403 ,  H04N21/42204 ,  H04N21/42226 ,  H04N21/4312 ,  H04N21/436 ,  H04N21/43615 ,  H04N2005/4435

    摘要： Disclosed is provided an apparatus and a method for operating a macro command and inputting a macro command, wherein the apparatus including a storing unit storing control signals received from a control device for selecting of a menu item of a host device, a creating unit creating the macro command combined with the control signals, and an executing unit reading the macro command and executing functions corresponding to the respective menu item of the host device according to a combination sequence of the control signals included in the read macro command.

    摘要翻译： 本发明提供了一种用于操作宏命令和输入宏命令的装置和方法，其中，该装置包括：存储单元，存储从控制装置接收的用于选择主机设备的菜单项的控制信号;创建单元， 宏指令与控制信号组合，以及执行单元，根据包含在读取宏命令中的控制信号的组合序列，读取宏命令并执行与主机设备的相应菜单项相对应的功能。