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14 条记录 (耗时 0.025 秒)

    Light emitting device and driving circuit thereof
    1.
    发明授权
    Light emitting device and driving circuit thereof 有权
    发光装置及其驱动电路

    公开(公告)号：US08513899B2

    公开(公告)日：2013-08-20

    申请号：US12550912

    申请日：2009-08-31

    申请人： Hyun Gu Kang ,  Sang Min Lee ,  Yoon Seok Lee ,  Won Il Kim ,  You Jin Kwon

    发明人： Hyun Gu Kang ,  Sang Min Lee ,  Yoon Seok Lee ,  Won Il Kim ,  You Jin Kwon

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0809

    摘要： A light emitting device comprises a first light emitting unit and a second light emitting unit connected in series with each other, and a PTF unit connected in parallel with the first light emitting unit and in series with the second light emitting unit. Each of the first light emitting unit and second light emitting unit comprises at least one LED. The PTF unit allows the second light emitting unit to be operated before operation of the first light emitting unit upon application of an AC voltage source. The light emitting device reduces total harmonic distortion and flickering, and improves power factor and optical efficiency. A driving circuit of the light emitting device is also disclosed.

    摘要翻译： 发光装置包括彼此串联连接的第一发光单元和第二发光单元，以及与第一发光单元并联并与第二发光单元串联的PTF单元。 第一发光单元和第二发光单元中的每一个包括至少一个LED。 在施加AC电压源时，PTF单元允许第二发光单元在第一发光单元的操作之前被操作。 发光装置降低总谐波失真和闪烁，提高功率因数和光效。 还公开了发光器件的驱动电路。

    Thiazole compound and a process thereof
    5.
    发明授权
    Thiazole compound and a process thereof 失效
    噻唑化合物及其工艺

    公开(公告)号：US06277996B1

    公开(公告)日：2001-08-21

    申请号：US09564979

    申请日：2000-05-04

    申请人： Dae-chul Yoon ,  Seung-won Yoo ,  Dong Gyun Shin ,  Myoung Ki Lee ,  Mi Soon Park ,  Yoon Seok Lee ,  Yoon Seok Song

    发明人： Dae-chul Yoon ,  Seung-won Yoo ,  Dong Gyun Shin ,  Myoung Ki Lee ,  Mi Soon Park ,  Yoon Seok Lee ,  Yoon Seok Song

    IPC分类号： C07D27738

    CPC分类号： C07D277/40 ,  Y02P20/55

    摘要： The present invention relates to a new crystalline aminothiazole derivative represented by the following formula (I) which is very useful for the preparation of cephalosporin antibiotics, including ceftazidime and cefixime, etc: wherein R1 and R2 are the same or different and independently represent H, an alkyl group of 1 to 4 carbon atoms, or a cycloalkyl group of 3 to 5 carbon atoms, X represents chlorine or bromine, and the acid in the acid addition salt represents an inorganic acid, such as hydrochloric acid, hydrobromic acid, sulfuric acid, or perchloric acid, or an organic acid, such as formic acid, acetic acid, trifluoroacetic acid, propionic acid, methanesulfonic acid, or benzenesulfonic acid.

    摘要翻译： 本发明涉及一种非常适用于头孢菌素和头孢克肟等头孢菌素抗生素非常有用的新型结晶氨基噻唑衍生物，其中R1和R2相同或不同，独立地代表H， 1〜4个碳原子的烷基或3〜5个碳原子的环烷基，X表示氯或溴，酸加成盐中的酸表示无机酸，如盐酸，氢溴酸，硫酸 或高氯酸，或有机酸如甲酸，乙酸，三氟乙酸，丙酸，甲磺酸或苯磺酸。

    DIMMER FOR A LIGHT EMITTING DEVICE
    7.
    发明申请
    DIMMER FOR A LIGHT EMITTING DEVICE 有权
    用于发光装置的调光器

    公开(公告)号：US20110181196A1

    公开(公告)日：2011-07-28

    申请号：US12844238

    申请日：2010-07-27

    申请人： Hyun Gu Kang ,  Do Hyung Kim ,  Sang Min Lee ,  Yoon Seok Lee

    发明人： Hyun Gu Kang ,  Do Hyung Kim ,  Sang Min Lee ,  Yoon Seok Lee

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0818 ,  H05B33/0851

    摘要： Exemplary embodiments of the present invention relate to a dimmer for a light emitting device using an alternating (AC) voltage source. The dimmer includes a switch to be switched in response to a switching control signal and to deliver an AC voltage of an AC voltage source to the light emitting device, a current detector to detect an electric current to be provided to the light emitting device and to output a current detection signal, and a controller to output the switching control signal in response to a dimming control signal and the current detection signal.

    摘要翻译： 本发明的示例性实施例涉及使用交流（AC）电压源的发光器件的调光器。 调光器包括响应于开关控制信号而被切换的开关，并将交流电压源的交流电压传递到发光器件;电流检测器，用于检测要提供给发光器件的电流;以及 输出电流检测信号，以及控制器，响应于调光控制信号和电流检测信号输出开关控制信号。

    Process for preparing cephalosporin antibiotics using new thiazole compound
    9.
    发明授权
    Process for preparing cephalosporin antibiotics using new thiazole compound 失效
    使用新的噻唑化合物制备头孢菌素抗生素的方法

    公开(公告)号：US06384212B1

    公开(公告)日：2002-05-07

    申请号：US09564980

    申请日：2000-05-04

    申请人： Dae-chul Yoon ,  Seung Won Yoo ,  Dong Gyun Shin ,  Myoung Ki Lee ,  Mi Soon Park ,  Yoon Seok Lee ,  Yoon Seok Song ,  Ju Cheol Lee ,  Sang Mi Oh

    发明人： Dae-chul Yoon ,  Seung Won Yoo ,  Dong Gyun Shin ,  Myoung Ki Lee ,  Mi Soon Park ,  Yoon Seok Lee ,  Yoon Seok Song ,  Ju Cheol Lee ,  Sang Mi Oh

    IPC分类号： C07D50124

    CPC分类号： C07D501/00

    摘要： The present invention relates to a new, simple, and easy process for preparing cephalosporin antibiotics of the following formula (I), such as ceftazidime and cefixime. The process comprises acylating a 7-amino cephalosporanic acid derivative of the following formula (III) with a crystalline aminothiazole compound of the following formula (II): wherein R1 and R2 are the same or different and independently represent H, a C1-4 alkyl or C3-5 cycloalkyl group, R4 represents acetoxymethyl, methylpyridine, or vinyl, X represents chlorine or bromine, and the acid in the acid addition salt represents an inorganic acid, such as hydrochloric acid, or an organic acid, such as formic acid or acetic acid.

    摘要翻译： 本发明涉及用于制备下列通式（I）的头孢菌素抗生素的新的，简单的和容易的方法，例如头孢他啶和头孢克肟。 该方法包括用下式（II）的结晶氨基噻唑化合物酰化下式（III）的7-氨基头孢菌酸衍生物：其中R 1和R 2相同或不同并且独立地代表H，C 1-4烷基 或C3-5环烷基，R4表示乙酰氧基甲基，甲基吡啶或乙烯基，X表示氯或溴，酸加成盐中的酸表示无机酸，如盐酸或有机酸，如甲酸或 醋酸。

    Dimmer for a light emitting device
    10.
    发明授权
    Dimmer for a light emitting device 有权
    调光器用于发光器件

    公开(公告)号：US08222825B2

    公开(公告)日：2012-07-17

    申请号：US12844238

    申请日：2010-07-27

    申请人： Hyun Gu Kang ,  Do Hyung Kim ,  Sang Min Lee ,  Yoon Seok Lee

    发明人： Hyun Gu Kang ,  Do Hyung Kim ,  Sang Min Lee ,  Yoon Seok Lee

    IPC分类号： H05B37/02 ,  H05B39/04 ,  H05B41/36

    CPC分类号： H05B33/0818 ,  H05B33/0851

    摘要： Exemplary embodiments of the present invention relate to a dimmer for a light emitting device using an alternating (AC) voltage source. The dimmer includes a switch to be switched in response to a switching control signal and to deliver an AC voltage of an AC voltage source to the light emitting device, a current detector to detect an electric current to be provided to the light emitting device and to output a current detection signal, and a controller to output the switching control signal in response to a dimming control signal and the current detection signal.

    摘要翻译： 本发明的示例性实施例涉及使用交流（AC）电压源的发光器件的调光器。 调光器包括响应于开关控制信号而被切换的开关，并将交流电压源的交流电压传递到发光器件;电流检测器，用于检测要提供给发光器件的电流;以及 输出电流检测信号，以及控制器，响应于调光控制信号和电流检测信号输出开关控制信号。