公开(公告)号：US08497797B2

公开(公告)日：2013-07-30

申请号：US12878618

申请日：2010-09-09

申请人： Dae Heon Lee ,  Sung Hyun Kim ,  Sang Woo Cho ,  Ji Eun Choi

发明人： Dae Heon Lee ,  Sung Hyun Kim ,  Sang Woo Cho ,  Ji Eun Choi

IPC分类号： G01S13/00

CPC分类号： G01S13/888 ,  G01S7/41 ,  G01S13/06 ,  H01Q3/08 ,  H01Q21/06

摘要： Provided are a two-dimensional array antenna and a device for detecting an internal object using the same. The device includes a plurality of unit antennas in a two-dimensional array of m columns and n rows on a board (where m and n are integers greater than 1), a first switch selecting one or more transmitting antenna to radiate a pulse signal onto an internal object in a structure from among the unit antennas; a second switch selecting one or more receiving antenna to collect a signal reflected from the internal object from among the unit antennas, and a transceiving analysis module analyzing information about the position and shape of the internal object.

摘要翻译： 提供了一种二维阵列天线和用于检测使用该天线的内部物体的装置。 该装置包括在板上的m列和n行的二维阵列中的多个单位天线（其中m和n是大于1的整数），第一开关选择一个或多个发射天线以将脉冲信号辐射到 单元天线中的结构中的内部对象; 选择一个或多个接收天线以从所述单元天线收集从所述内部对象反射的信号的第二开关，以及分析关于所述内部对象的位置和形状的信息的收发分析模块。

公开(公告)号：US07920822B2

公开(公告)日：2011-04-05

申请号：US12056670

申请日：2008-03-27

申请人： Kwang Uk Chu ,  In Ho Hwang ,  Jong Kyu Kim ,  Sang Woo Cho ,  Dae Heon Lee

发明人： Kwang Uk Chu ,  In Ho Hwang ,  Jong Kyu Kim ,  Sang Woo Cho ,  Dae Heon Lee

IPC分类号： H04K3/00

CPC分类号： H04K3/825 ,  H04K3/42 ,  H04K3/43 ,  H04K2203/12

摘要： Provided is a device for preventing eavesdropping through a speaker. More particularly, a device for preventing eavesdropping by transmitting a jamming signal through a speaker common signal line is provided, the device including: a jamming signal generator for generating a jamming signal comprising a noise signal; an amplifier for amplifying the jamming signal; and a transformer for receiving the amplified jamming signal from the amplifier and outputting the amplified jamming signal to a speaker common signal line. The device may transmit a jamming signal in an audible frequency band to the speaker common signal line, thereby rendering conversations unrecognizable to eavesdroppers when an electrical signal induced from a speaker is detected through the speaker common signal line.

摘要翻译： 提供了用于防止通过扬声器窃听的设备。 更具体地，提供了一种通过将扬声器公共信号线发送干扰信号来防止窃听的装置，该装置包括：干扰信号发生器，用于产生包括噪声信号的干扰信号; 用于放大干扰信号的放大器; 以及用于从放大器接收放大的干扰信号并将放大的干扰信号输出到扬声器公共信号线的变压器。 设备可以将扬声器公共信号线中的可听频带中的干扰信号发送到扬声器公共信号线，从而当通过扬声器公共信号线检测到从扬声器感应到的电信号时，使得会话无法识别到窃听器。