公开(公告)号：US20090021325A1

公开(公告)日：2009-01-22

申请号：US12176173

申请日：2008-07-18

申请人： Jae CHAN LEE ,  Joong Han Yoon ,  Gi Ho Han ,  Seok Min Woo ,  Dong Hyun Kim ,  Hyun Hak Kim

发明人： Jae CHAN LEE ,  Joong Han Yoon ,  Gi Ho Han ,  Seok Min Woo ,  Dong Hyun Kim ,  Hyun Hak Kim

IPC分类号： H03H7/38

CPC分类号： H03H7/40 ,  H04B1/005 ,  H04B1/18

摘要： A front end module is disclosed. The front end module includes a plurality of antennas receiving different frequency band signals, respectively, an impedance matching circuit unit comprising a plurality of tuners respectively connected to the plurality of antennas to control impedance matching, a selection unit selecting one frequency band signal from multiple frequency band signals passing through the impedance matching circuit unit, a measuring unit measuring signal strength of a received signal selected at the selection unit, and a control unit controlling an operation of the selection unit and an impedance of the tuner according to the signal strength of the received signal measured at the measuring unit.

摘要翻译： 公开了一种前端模块。 前端模块包括分别接收不同频带信号的多个天线，阻抗匹配电路单元，包括分别连接到多个天线的多个调谐器以控制阻抗匹配;选择单元，从多个频率中选择一个频带信号 通过阻抗匹配电路单元的频带信号，测量在选择单元处选择的接收信号的信号强度的测量单元，以及控制单元根据信号强度来控制选择单元和调谐器的阻抗的控制单元 在测量单元测量的接收信号。

公开(公告)号：US20100031548A1

公开(公告)日：2010-02-11

申请号：US12325105

申请日：2008-11-28

申请人： Jae CHAN LEE ,  Yong Gil NAMGUNG ,  Hyun Hak KIM ,  Seok Min WOO

发明人： Jae CHAN LEE ,  Yong Gil NAMGUNG ,  Hyun Hak KIM ,  Seok Min WOO

IPC分类号： G09F3/18 ,  G06F7/00

CPC分类号： G09F3/204 ,  G09F3/208

摘要： An electronic shelf label has a simple structure to be easily installed or removed and is attached and detached only through a predetermined-shaped key so as to prevent unauthorized personnel from removing the electronic shelf label, thereby protecting the electronic shelf label from theft.

摘要翻译： 电子货架标签具有简单的结构，易于安装或拆卸，仅通过预定形状的键被安装和拆卸，以防止未经授权的人员移除电子货架标签，从而保护电子货架标签免受盗窃。