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    • 6. 发明授权
    • Power supplying circuit and phase-change random access memory including the same
    • 供电电路和包括相同的相变随机存取存储器
    • US07817489B2
    • 2010-10-19
    • US12251761
    • 2008-10-15
    • Beak-hyung ChoKwang-ho KimWon-seok Lee
    • Beak-hyung ChoKwang-ho KimWon-seok Lee
    • G11C5/14
    • G11C5/145G11C13/0004G11C13/0038
    • A power supplying circuit (PSC) and a phase-change random access memory (PRAM) including the PSC. According to an aspect of the invention, the PSC includes: a first voltage generator configured to output a first voltage to a first terminal; and a second voltage generator configured to output a second voltage to a second terminal, the second voltage generator including: a voltage pump unit configured to output the second voltage based on a clock signal and a pump control signal; a pump output detector coupled to the voltage pump unit, the pump output detector configured to output a pump output detection signal; and a discharging unit coupled to the voltage pump unit, the discharging unit configured to discharge a level of the second voltage to a predetermined level in response to a discharge signal. Embodiments of the invention may prevent write and/or read malfunctions that can occur due to changes in the level of a voltage supplied to PRAM cell blocks.
    • 供电电路(PSC)和包括PSC的相变随机存取存储器(PRAM)。 根据本发明的一个方面,PSC包括:第一电压发生器,被配置为将第一电压输出到第一端子; 以及第二电压发生器,被配置为向第二端子输出第二电压,所述第二电压发生器包括:电压泵单元,被配置为基于时钟信号和泵控制信号输出所述第二电压; 耦合到所述电压泵单元的泵输出检测器,所述泵输出检测器被配置为输出泵输出检测信号; 以及耦合到所述电压泵单元的放电单元,所述放电单元被配置为响应于放电信号将所述第二电压的电平放电到预定电平。 本发明的实施例可以防止由于提供给PRAM单元块的电压的电平的变化而可能发生的写入和/或读取故障。
    • 9. 发明授权
    • Transparent thermoplastic resin compositions and process for preparing the same
    • 透明热塑性树脂组合物及其制备方法
    • US07579406B2
    • 2009-08-25
    • US11206581
    • 2005-08-18
    • Jeong-su ChoiMi-young LeeHyong-min BahnKeun-hoon YooWon-seok Lee
    • Jeong-su ChoiMi-young LeeHyong-min BahnKeun-hoon YooWon-seok Lee
    • C08L47/00
    • C08F285/00C08L33/04C08L51/04Y10S525/902C08F220/00C08L2666/04
    • The present invention relates to a transparent thermoplastic resin composition which characteristically contains A) 20-80 weight % of graft copolymer composed of a) conjugated diene rubber latex; b) intermediate layer prepared by copolymerization of acrylic acid alkylester derivative and aromatic vinyl derivative with the above a); and c) graft layer prepared by copolymerization of methacrylic acid alkylester derivative or acrylic acid alkylester derivative, a romatic vinyl derivative and vinyl cyan derivative with the above b) and B) 20-80 weight % of MSAN copolymer prepared by copolymerization of methacrylic acid alkylester derivative or acrylic acid alkylester derivative, aromatic vinyl derivative and vinyl cyan derivative. The transparent thermoplastic resin composition of the present invention has enhanced transparency, impact strength, surface gloss, weather resistance and color by being prepared by the method of the invention which is characterized by the steps of forming an intermediate layer by adding acrylic rubber to polybutadiene rubber, grafting, and regulating refractive indices of each monomers of a copolymer.
    • 本发明涉及一种透明热塑性树脂组合物,其特征在于包含A)20-80重量%的由共轭二烯橡胶胶乳组成的接枝共聚物; b)通过丙烯酸烷基酯衍生物和芳族乙烯基衍生物与上述a)的共聚制备的中间层; 和c)通过甲基丙烯酸烷基酯衍生物或丙烯酸烷基酯衍生物,芳香族乙烯基衍生物和乙烯基氰基衍生物与上述b)和B)共聚制备的接枝层,其为通过甲基丙烯酸烷基酯共聚制备的20-80重量%的MSAN共聚物 衍生物或丙烯酸烷基酯衍生物,芳族乙烯基衍生物和乙烯基氰基衍生物。 本发明的透明热塑性树脂组合物通过本发明的方法制备透明性,冲击强度,表面光泽,耐候性和颜色,其特征在于以下步骤:通过向聚丁二烯橡胶中加入丙烯酸橡胶形成中间层 ,接枝和调节共聚物各单体的折射率。