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    • 75. 发明授权
    • Method of allocating and withdrawing time slot using position movement of time slot and TDMA communication system using the same
    • 使用时隙的位置移动和使用其的TDMA通信系统分配和撤回时隙的方法
    • US08693449B2
    • 2014-04-08
    • US13333546
    • 2011-12-21
    • Ju Hyung LeeSang Jun KimMan Yeob LimJoon Young ChoJong Sung Kim
    • Ju Hyung LeeSang Jun KimMan Yeob LimJoon Young ChoJong Sung Kim
    • H04J3/00
    • H04W72/0446H04W64/006
    • The present invention relates to a TDMA communication system using the position movement of a time slot. The TDMA communication system includes a TDMA network, a network central station, and terminals. The network central station includes a receiver for receiving transmission cycle information and time slot allocation requests from the terminals, a network central station controller for writing a degree of identification for the number of cases of time slot allocation according to the information transmission cycle, searching for an allocable optimum time slot, and withdrawing a time slot from a terminal which has finished communication, a time slot management unit for allocating a time slot to the terminal based on degree of identification for the number of cases of time slot allocation written by the network central station controller, and a transmitter for transmitting information about the allocated time slot to the terminal.
    • 本发明涉及使用时隙的位置移动的TDMA通信系统。 TDMA通信系统包括TDMA网络,网络中心站和终端。 网络中心站包括用于从终端接收传输周期信息和时隙分配请求的接收机,一个网络中心站控制器,用于根据信息传输周期写出时隙分配情况的数量的识别度,搜索 可分配的最佳时隙,并且从已经完成通信的终端中撤出时隙;时隙管理单元,用于基于由网络写入的时隙分配的个案数目的识别次数向终端分配时隙 中心站控制器和用于向终端发送关于分配的时隙的信息的发射机。
    • 78. 发明授权
    • Backlight unit and apparatus and method for controlling LED driving circuit
    • 背光单元及控制LED驱动电路的设备及方法
    • US08664874B2
    • 2014-03-04
    • US13460135
    • 2012-04-30
    • Jeong-il KangTae-sung Kim
    • Jeong-il KangTae-sung Kim
    • H05B37/02
    • H05B33/0818
    • A backlight unit is provided. The backlight unit includes an LED; an LED driving unit which drives the LED in accordance with a switching operation of a transistor; and a control unit which adds an additional signal to an output current of the LED to obtain a combined current, compares the combined current with the reference current, and controls the switching operation of the transistor based on the results of the comparison, wherein the additional signal is a current signal whose level increases over time in each period and is then reset to a predefined value in each period in accordance with an operation cycle of the transistor.
    • 提供背光单元。 背光单元包括LED; LED驱动单元,其根据晶体管的开关动作驱动LED; 以及控制单元,其向LED的输出电流添加附加信号以获得组合电流,将组合的电流与参考电流进行比较,并且基于比较的结果来控制晶体管的开关操作,其中附加 信号是电流信号,其电平在每个周期内随时间增加,然后根据晶体管的操作周期在每个周期中复位到预定值。