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    Apparatus for automatic gain control and wireless receiver employing the same
    1.
    发明申请
    Apparatus for automatic gain control and wireless receiver employing the same 失效
    用于自动增益控制的装置和采用该装置的无线接收器

    公开(公告)号：US20070076828A1

    公开(公告)日：2007-04-05

    申请号：US11635197

    申请日：2006-12-07

    申请人： Jang Choi ,  Seong Kim ,  Hyun Yu

    发明人： Jang Choi ,  Seong Kim ,  Hyun Yu

    IPC分类号： H04L27/08

    CPC分类号： H04L27/0002 ,  H03G3/001 ,  H03G3/3068

    摘要： Provided is an apparatus for automatic gain control (AGC) widely used in a receiver of a wireless communication system. The receiver of a wireless communication system includes: a step variable gain amplifier and an analog variable gain amplifier disposed in the path of a wireless signal and amplifying the wireless signal; an analog gain control unit for generating a gain control voltage for feedback-controlling an amplification value of the analog variable gain amplifier; a digital gain control unit for receiving the control voltage and generating a digital code determining an amplification value of the step variable gain amplifier. The apparatus for AGC constituted as described above can reduce power consumption and the number of devices by efficiently running an AGC loop in an analog domain, and can be embodied at low cost in a structure appropriately controlling the step gain amplifier and the analog gain amplifier.

    摘要翻译： 提供了广泛用于无线通信系统的接收机中的自动增益控制（AGC）的装置。 无线通信系统的接收机包括：设置在无线信号的路径中的步进可变增益放大器和模拟可变增益放大器，并放大无线信号; 模拟增益控制单元，用于产生用于反馈控制模拟可变增益放大器的放大值的增益控制电压; 数字增益控制单元，用于接收控制电压并产生确定阶跃可变增益放大器的放大值的数字代码。 如上所述构成的AGC装置可以通过有效地运行模拟域中的AGC环路来降低功耗和装置数量，并且可以在适当地控制步进增益放大器和模拟增益放大器的结构中以低成本实现。

    Single side embossed color steel sheet with printing and manufacturing method thereof
    2.
    发明申请
    Single side embossed color steel sheet with printing and manufacturing method thereof 有权
    单面压纹彩钢板及其印刷及其制造方法

    公开(公告)号：US20060147745A1

    公开(公告)日：2006-07-06

    申请号：US11325828

    申请日：2006-01-04

    申请人： Jang Choi ,  Sung Jun ,  Sang Park ,  Won Lee ,  Byung Lee

    发明人： Jang Choi ,  Sung Jun ,  Sang Park ,  Won Lee ,  Byung Lee

    IPC分类号： B21D39/00 ,  B32B15/08 ,  C25D5/00

    CPC分类号： C09D175/06 ,  B05D3/12 ,  B05D5/061 ,  B05D7/14 ,  B05D7/57 ,  B05D2202/15 ,  B05D2252/00 ,  B05D2350/65 ,  B05D2503/00 ,  C08G18/42 ,  C08G18/58 ,  Y10T428/12396 ,  Y10T428/12556 ,  Y10T428/12569 ,  Y10T428/12799 ,  Y10T428/12972 ,  Y10T428/26 ,  Y10T428/31681

    摘要： A single-side embossed color steel sheet, and a method for manufacturing the same are disclosed. The steel sheet comprises a steel sheet substrate, a zinc or zinc alloy-plated layer, a non-chromate or chromate pretreated layer, a primary coat paint layer of modified epoxy or modified polyester, a color base paint layer, a printed layer, and a top coat clear paint layer. The color base paint layer comprises a polyester resin as a main resin, a melamine resin as a crosslink resin, a crosslink accelerator, other additives, solvent, etc. The printed layer exhibits a feeling of solidity with various feelings of texture and colors. The top coat clear paint layer serves to protect the printed layer from contaminants. The color steel sheet exhibits a remarkably enhanced feeling of solidity at an irregular surface thereof, and has enhanced contaminant resistance properties and environmental friendliness, thereby satisfying requirements for aesthetic design and functionality of products.

    摘要翻译： 公开了一种单面压纹彩色钢板及其制造方法。 钢板包括钢板基材，锌或锌合金镀层，非铬酸盐或铬酸盐预处理层，改性环氧树脂或改性聚酯的初级涂层漆层，色底漆层，印刷层和 顶漆清漆层。 色底漆层包括作为主要树脂的聚酯树脂，作为交联树脂的三聚氰胺树脂，交联促进剂，其它添加剂，溶剂等。印刷层具有各种感觉的纹理和颜色的坚实感。 顶层透明漆层用于保护印刷层免受污染。 彩色钢板在其不规则表面显示出显着增强的坚固感，并且具有增强的耐污染性和环境友好性，从而满足了美学设计和产品功能的要求。

    Apparatus for automatically measuring a relatively wide range of leakage currents
    3.
    发明申请
    Apparatus for automatically measuring a relatively wide range of leakage currents 失效
    用于自动测量相对宽范围的漏电流的装置

    公开(公告)号：US20050088196A1

    公开(公告)日：2005-04-28

    申请号：US10929807

    申请日：2004-08-30

    申请人： In Choi ,  Dong Lee ,  Jeong Ahn ,  Gil Jung ,  Jang Choi

    发明人： In Choi ,  Dong Lee ,  Jeong Ahn ,  Gil Jung ,  Jang Choi

    IPC分类号： G01R31/02 ,  G01R19/25 ,  G01R31/12

    CPC分类号： G01R19/2513 ,  G01R31/1245

    摘要： A leakage current measurement apparatus for measuring leakage currents is disclosed. The leakage current measurement apparatus automatically selects one of non-inductive shunt resistors of 10Ω, 100Ω, and 1000Ω and measures leakage currents of an outdoor isolation material for an ultra-high voltage. Additionally, the leakage current measurement apparatus is capable of measuring a relatively wide range of leakage currents with a relatively high precision, even at a remote location, as a measurement range is automatically adjusted within measurement ranges preset by a user when leakage currents of an outdoor isolation material change, and being protected against a surge possibly generated by an ultra-high voltage. Also, it can remotely measure in real-time leakage currents of an outdoor isolation material installed at a remote location over Ethernet.

    摘要翻译： 公开了一种用于测量泄漏电流的泄漏电流测量装置。 泄漏电流测量装置自动选择10mega，100Omega和1000Omega的非感性并联电阻器，并测量超高压室外隔离材料的漏电流。 此外，即使在远程位置，泄漏电流测量装置能够以相对较高的精度测量相对宽的泄漏电流范围，因为在用户在室外的泄漏电流下由用户预设的测量范围内自动调节测量范围 隔离材料变化，并被防止可能由超高电压产生的浪涌。 此外，它可以通过以太网远程测量安装在远程位置的室外隔离材料的实时泄漏电流。