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    • 12. 发明授权
    • Broadband multi-phase output delay locked loop circuit utilizing a delay matrix
    • 使用延迟矩阵的宽带多相输出延迟锁定环路电路
    • US07705644B2
    • 2010-04-27
    • US12028936
    • 2008-02-11
    • Ho-young KimDong-bee JangJae-yoon SimYoung-sang Kim
    • Ho-young KimDong-bee JangJae-yoon SimYoung-sang Kim
    • H03L7/06
    • H03L7/0812H03L7/10
    • A broadband multi-phase output delay locked loop (DLL) circuit can be operated in a wide range of frequencies and generate various phases. Unlike conventional voltage control delay lines in which delay cells are connected in series, the DLL circuit utilizes a delay matrix in which a resistant network is used so that the number of delay cells connected in series is reduced, various phases can be outputted, and a delay interval error (phase error) due to the resistant network is minimized. The current of the delay cells is controlled so that the delay cells in the delay matrix can operate in a wide range of frequencies, and load capacitance values of capacitors connected in parallel in the delay cells can be controlled.
    • 宽带多相输出延迟锁定环(DLL)电路可以在宽频率范围内工作,并产生各种相位。 与其中延迟单元串联连接的常规电压控制延迟线不同,DLL电路利用其中使用电阻网络的延迟矩阵,使得串联连接的延迟单元的数量减少,可以输出各种相位,并且 由于抵抗网络导致的延迟间隔误差(相位误差)被最小化。 控制延迟单元的电流,使得延迟矩阵中的延迟单元可以在宽的频率范围内工作,并且可以控制在延迟单元中并联连接的电容器的负载电容值。
    • 13. 发明申请
    • OPTICAL DRIVER INCLUDING A MULTIPHASE CLOCK GENERATOR HAVING A DELAY LOCKED LOOP (DLL), OPTIMIZED FOR GIGAHERTZ FREQUENCIES
    • 包括具有延迟锁定环路的多时钟发生器(DLL)的光学驱动器,优于GIGAHERTZ FREQUENCIES
    • US20090153206A1
    • 2009-06-18
    • US12352330
    • 2009-01-12
    • Ho-young KimYong-sub KIM
    • Ho-young KimYong-sub KIM
    • H03L7/06H03K3/00
    • G11B7/00456G11B7/0062G11B7/126H03L7/0805H03L7/0812H03L7/0891H04L7/0337
    • An optical (disc) driving system including the DLL based multiphase clock generator circuit capable of generating 32 different phases from input clock having a frequency of 800 MHz or greater. The multiphase clock generator includes on a delay locked loop (DLL) having a frequency divider for outputting an N-divided clock to a first set of M voltage-controlled delay cells within a feedback loop, and further including an identical set of M voltage-controlled delay cells outside of the feedback loop for delaying the undivided clock and for outputting M multiphase clocks.An optical driver circuit of an optical driving system and a method for implementing a write-strategy for preventing “overlapping” of marks written on adjacent grooves on an optical disc. The circuit and method produce multiple write-strategy waveforms (channels) switching at a high resolution (e.g., T/32) in the Gigahertz frequency range.
    • 一种包括基于DLL的多相时钟发生器电路的光(盘)驱动系统,能够从具有800MHz或更高频率的输入时钟产生32个不同的相位。 多相时钟发生器包括具有分频器的延迟锁定环(DLL),用于将N分频时钟输出到反馈回路内的M个电压控制延迟单元的第一组,并且还包括相同的一组M电压 - 控制延迟单元在反馈回路外部,用于延迟未分配的时钟并输出M个多相时钟。 光学驱动系统的光驱动器电路和实现写入策略的方法,用于防止写在光盘上的相邻凹槽上的标记的“重叠”。 电路和方法产生在吉赫兹频率范围内以高分辨率(例如,T / 32)切换的多个写策略波形(通道)。
    • 15. 发明授权
    • Chemical mechanical polishing apparatus having a cleaner for cleaning a conditioning disc and method of conditioning a polishing pad of the apparatus
    • 具有用于清洁调节盘的清洁剂的化学机械抛光装置和调节该装置的抛光垫的方法
    • US06695684B2
    • 2004-02-24
    • US09969992
    • 2001-10-04
    • Young-rae ParkHo-young KimHong-kyu Hwang
    • Young-rae ParkHo-young KimHong-kyu Hwang
    • B24B100
    • B24B53/017H01L21/67046
    • A chemical mechanical polishing apparatus includes a polishing pad on which a wafer requiring planarization is placed, a conditioning disc having an abrasive surface for conditioning the polishing pad, a tank containing de-ionized water in which the conditioning disc soaks while standing by, and a cleaner for cleaning the conditioning disc. The conditioning disc cleaner is disposed in the tank of de-ionized water to remove polishing impurities from an abrasive surface of the conditioning disc. The cleaner may include a brush having bristles against which the abrasive surface of the conditioning disc is placed when it is lowered into the tank. In operation, after the wafer is polished, an abrasive surface of the conditioning disc is run over the upper surface of the polishing pad to condition the surface of the polishing pad. Then the conditioning disc is moved off of the upper surface of the polishing pad and to a stand-by position in which the abrasive surface of the disc is submerged in a liquid. Finally, while the conditioning disc is in its stand-by position, impurities are forced off of the abrasive surface and into the liquid by the cleaner disposed in the liquid. The conditioning disc is thus cleaned so that impurities are not transferred to the polishing pad during the next conditioning process.
    • 化学机械抛光装置包括其上放置有需要平面化的晶片的抛光垫,具有用于调节抛光垫的研磨表面的调节盘,包含调节盘在静置时浸泡的去离子水的罐,以及 用于清洁调理盘的清洁剂。 调节盘清洁器设置在去离子水的罐中,以从调理盘的研磨表面去除抛光杂质。 清洁器可以包括具有刷毛的刷子,当调节盘的研磨表面下降到罐中时,该刷头与该刷头对准。 在操作中,在抛光晶片之后,调节盘的研磨表面在抛光垫的上表面上延伸以调节抛光垫的表面。 然后调节盘从抛光垫的上表面移动到盘的研磨表面浸没在液体中的待机位置。 最后,当调节盘处于其待机位置时,通过设置在液体中的清洁剂将杂质从研磨表面强制离开液体。 因此,调节盘被清洁,使得杂质在下一个调理过程中不会转移到抛光垫。