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    • 2. 发明授权
    • Method and system for locating sensor node in sensor network using transmit power control
    • 使用发射功率控制在传感器网络中定位传感器节点的方法和系统
    • US08421615B2
    • 2013-04-16
    • US12270898
    • 2008-11-14
    • Jehyok RyuSun Gi KimHyo Hyun ChoiSun Shin AnSae Young AhnBum Jin Kim
    • Jehyok RyuSun Gi KimHyo Hyun ChoiSun Shin AnSae Young AhnBum Jin Kim
    • G08B1/08
    • G08C21/00
    • A method and apparatus for a sensor network having a plurality of reference nodes and a sensor node that enables the sensor node to compute a relative position through transmission range control and position mapping. In transmission range control, each reference node sends location information signals to the sensor node while varying transmission power. In position mapping, the sensor node forms a grid of vertical and horizontal lines corresponding to a square area defined by the neighboring reference nodes, extracts coordinates of intersections in the grid belonging to a shared region between areas covered by location information signals of various transmit power levels from the neighboring reference nodes, and sets the position of the sensor node to the middle points of the extracted coordinates. Each reference node sends a location information signal when a random backoff time expires after reception of a location information request signal.
    • 一种用于具有多个参考节点和传感器节点的传感器网络的方法和装置,其使传感器节点能够通过传输范围控制和位置映射来计算相对位置。 在传输范围控制中,每个参考节点在发射功率变化的同时向传感器节点发送位置信息信号。 在位置映射中,传感器节点形成对应于由相邻参考节点定义的平方区域的垂直和水平线的网格,提取属于各种发射功率的位置信息信号覆盖的区域之间的共享区域的网格中的交点的坐标 级别,并将传感器节点的位置设置为提取的坐标的中点。 当接收到位置信息请求信号之后随机退避时间到期时,每个参考节点发送位置信息信号。
    • 4. 发明申请
    • METHOD AND SYSTEM FOR LOCATING SENSOR NODE IN SENSOR NETWORK USING TRANSMIT POWER CONTROL
    • 使用发射功率控制在传感器网络中定位传感器节点的方法和系统
    • US20090128298A1
    • 2009-05-21
    • US12270898
    • 2008-11-14
    • Jehyok RYUSun Gi KimHyo Hyun ChoiSun Shin AnSae Young AhnBum Jin Kim
    • Jehyok RYUSun Gi KimHyo Hyun ChoiSun Shin AnSae Young AhnBum Jin Kim
    • H04Q5/22
    • G08C21/00
    • A method and apparatus for a sensor network having a plurality of reference nodes and a sensor node that enables the sensor node to compute a relative position through transmission range control and position mapping. In transmission range control, each reference node sends location information signals to the sensor node while varying transmission power. In position mapping, the sensor node forms a grid of vertical and horizontal lines corresponding to a square area defined by the neighboring reference nodes, extracts coordinates of intersections in the grid belonging to a shared region between areas covered by location information signals of various transmit power levels from the neighboring reference nodes, and sets the position of the sensor node to the middle points of the extracted coordinates. Each reference node sends a location information signal when a random backoff time expires after reception of a location information request signal.
    • 一种用于具有多个参考节点和传感器节点的传感器网络的方法和装置,其使传感器节点能够通过传输范围控制和位置映射来计算相对位置。 在传输范围控制中,每个参考节点在发射功率变化的同时向传感器节点发送位置信息信号。 在位置映射中,传感器节点形成对应于由相邻参考节点定义的平方区域的垂直和水平线的网格,提取属于各种发射功率的位置信息信号覆盖的区域之间的共享区域的网格中的交点的坐标 级别,并将传感器节点的位置设置为提取的坐标的中点。 当接收到位置信息请求信号之后随机退避时间到期时,每个参考节点发送位置信息信号。
    • 5. 发明授权
    • LED light source lens having upper, central and lower parts
    • LED光源透镜具有上,中,下部分
    • US07540635B2
    • 2009-06-02
    • US11500362
    • 2006-08-08
    • Jin Jong KimBum Jin KimHo Seop Jeong
    • Jin Jong KimBum Jin KimHo Seop Jeong
    • F21V5/00
    • G02B19/0071G02B19/0028G02B19/0061H01L33/54H01L33/60
    • Disclosed herein is a Light Emitting Diode (LED) light source lens for emitting light in a lateral direction. The LED source lens includes an upper part, an upper part and a central part. The upper part includes an upper part reflecting surface bent symmetrically with respect to the central axis of the lens, and an upper part refracting surface extended from the end of the upper part reflecting surface parallel with the central axis. The central part includes a side surface extended from the lower end of the upper part refracting surface and bend inwards, and refracts or reflects light through the side surface. The lower part accommodates the LED light source, and includes an arch-shaped lower part refracting surface extended outwards from the lower end of the side surface of the central part. The light radiated from the LED light source is emitted perpendicular to the central axis.
    • 本文公开了一种用于沿横向发射光的发光二极管(LED)光源透镜。 LED源透镜包括上部,上部和中心部。 上部包括相对于透镜的中心轴对称地弯曲的上部反射面,以及从上部反射面的与中心轴平行的端部延伸的上部折射面。 中心部分包​​括从上部折射表面的下端延伸并向内弯曲的侧表面,并且通过侧表面折射或反射光。 下部容纳LED光源,并且包括从中心部分的侧表面的下端向外延伸的拱形下部折射表面。 从LED光源照射的光垂直于中心轴发射。
    • 9. 发明申请
    • LED backlight apparatus with color deflection remove at periphery thereof
    • 具有彩色偏转的LED背光装置在其周围移除
    • US20070146298A1
    • 2007-06-28
    • US11585213
    • 2006-10-24
    • Bum Jin Kim
    • Bum Jin Kim
    • G09G3/36
    • G02F1/133603G02F1/133609G02F1/133621G02F2001/133613G09G3/3406G09G2310/0232
    • The invention relates to a direct backing type LED backlight apparatus which supplies a white light source by mixing monochromatic LEDs to a display device. The backlight apparatus includes a first LED row composed of red LEDs disposed adjacent to opposed peripheries of a substrate with green, blue and red LEDs alternately disposed between the red LEDs at the peripheries. The backlight apparatus also includes a second LED row having a similar arrangement of LEDs with blue LEDs disposed adjacent to the opposed peripheries. The backlight apparatus regulates the amount of radiation from the red and blue LEDs to be smaller than the amount of radiation from the rest of the LEDs. This allows elimination of color deflection at the peripheries of a light guide panel.
    • 本发明涉及通过将单色LED混合到显示装置来提供白光源的直接背衬型LED背光装置。 该背光装置包括一个第一LED行,其由邻近基板的相对周边设置的红色LED组成,绿色,蓝色和红色LED交替地设置在外围的红色LED之间。 背光装置还包括第二LED行,其具有与邻近相对周边设置的蓝色LED的类似布置的LED。 背光装置将来自红色和蓝色LED的辐射量调节为小于来自其余LED的辐射量。 这允许消除导光板的周边处的颜色偏转。