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    • 3. 发明授权
    • Method and apparatus for reducing peak to average power ratio using peak windowing
    • 使用峰值窗口降低峰均功率比的方法和装置
    • US08548092B2
    • 2013-10-01
    • US13004271
    • 2011-01-11
    • In-Tae KangJung-Hwa BaeJung-Uk WooShin-Ho KimSang-Min BaeJong-Han LimDong-Min KimBo-Rham Lee
    • In-Tae KangJung-Hwa BaeJung-Uk WooShin-Ho KimSang-Min BaeJong-Han LimDong-Min KimBo-Rham Lee
    • H04K1/02
    • H04L27/2624
    • A method and apparatus for reducing a Peak to Average Power Ratio (PAPR) using peak windowing is provided. In the apparatus, an absolute value calculator calculates an absolute value of an input signal, a subtractor subtracts a predetermined clipping threshold level from the absolute value, a smoothing unit performs smoothing on the subtracted signal according to a predetermined smoothing scheme and outputs a first smoothed signal, an adder adds the first smoothed signal to the clipping threshold level, an inverse calculator outputs a second smoothed signal by multiplying the clipping threshold level by an inverse of the added signal, and a multiplier outputs a final PAPR-reduced signal by multiplying the input signal by the second smoothed signal. The method and apparatus address an overcompensation problem while processing signals having a large bandwidth and a high data rate without delay, thereby minimizing the clipping influences on Bit Error Rate (BER) and Adjacent Channel Leakage Ratio (ACLR) performances.
    • 提供了一种使用峰值窗口降低峰均功率比(PAPR)的方法和装置。 在设备中,绝对值计算器计算输入信号的绝对值,减法器根据绝对值减去预定的限幅阈值电平,平滑单元根据预定的平滑方案对减法信号进行平滑处理,并输出第一个平滑 信号,加法器将第一平滑信号与削波阈值电平相加,逆计算器通过将削波阈值电平乘以相加信号的倒数来输出第二平滑信号,乘法器将最终的PAPR降低信号乘以 输入信号由第二平滑信号。 该方法和装置在不延迟地处理具有大带宽和高数据速率的信号的同时解决过度补偿问题,从而最小化对误码率(BER)和相邻信道泄漏比(ACLR)性能的削波影响。
    • 10. 发明申请
    • Positive photoresist composition for liquid crystal device
    • 用于液晶装置的正光致抗蚀剂组合物
    • US20050064321A1
    • 2005-03-24
    • US10494486
    • 2002-10-21
    • Hoon KangJoon-Yeon ChoDong-Min KimSeung-Uk Lee
    • Hoon KangJoon-Yeon ChoDong-Min KimSeung-Uk Lee
    • G03F7/008G03F7/00G03F7/004G03F7/023H01L21/027G03C1/494
    • G03F7/0236G03F7/0007
    • The present invention relates to an LCD circuit photoresist composition for manufacturing fine circuit patterns on liquid crystal display circuits or semiconductor integrated circuits, and more particularly, and LCD circuit photoresist composition including (a) mixed polymer resins comprising a novolak resin with a molecular weight ranging from 3,000 to 9,000 and a fractionated novolak resin with a molecular weight ranging from 3,500 to 10,000; (b) a diazide-type photosensitive compound; (c) a photosensitizer; and (d) organic solvents. An LCD circuit photoresist composition of the present invention has excellent photosensitivity, retention ratio, resolution, contrast, heat resistance, adhesion, and stripper solubility, thus this photoresist composition can be easily applied to industrial work places for better working environments.
    • 本发明涉及用于在液晶显示电路或半导体集成电路上制造精细电路图案的LCD电路光致抗蚀剂组合物,更具体地说,涉及包括(a)包含分子量范围的酚醛清漆树脂的混合聚合物树脂的LCD电路光致抗蚀剂组合物 3,000至9,000份,分子量为3,500至10,000份的分级酚醛清漆树脂; (b)二叠氮型光敏化合物; (c)光敏剂; 和(d)有机溶剂。 本发明的LCD电路光阻组合物具有优异的光敏性,保留率,分辨率,对比度,耐热性,粘合性和剥离剂溶解性,因此该光致抗蚀剂组合物可以容易地应用于工业工作场所,从而达到更好的工作环境。