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    • 14. 发明授权
    • Apparatus for driving voice coil actuator of camera and method thereof
    • 照相机音圈驱动器驱动装置及其方法
    • US08379903B2
    • 2013-02-19
    • US12773783
    • 2010-05-04
    • Min-Joung KoJin ParkJung Hyun LeeSeung-Kwon Lee
    • Min-Joung KoJin ParkJung Hyun LeeSeung-Kwon Lee
    • H04R1/00
    • H04N5/23212G02B7/28
    • An apparatus and a method for driving a voice coil actuator of a camera are disclosed. In the apparatus for driving a voice coil actuator of a camera, when an input shaping execution unit generates a shaping signal using a resonance frequency of the voice coil actuator to output a drive control signal subjected to input shaping, a drive circuit unit controls an operation of the voice coil actuator connected to a rear end according to the drive control signal using the shaping signal as an initial input. The shaping signal is used for removing resonance of the voice coil actuator and may be one of a 2-step shaping signal, a multi-step shaping signal having 4 or more steps, a linear shaping signal, a toggle shaping signal and the like.
    • 公开了一种用于驱动相机的音圈致动器的装置和方法。 在用于驱动相机的音圈致动器的装置中,当输入整形执行单元使用音圈致动器的共振频率产生整形信号以输出经受输入整形的驱动控制信号时,驱动电路单元控制操作 根据使用整形信号作为初始输入的驱动控制信号连接到后端的音圈致动器。 整形信号用于去除音圈致动器的谐振,并且可以是2步整形信号,具有4级或更多级的多级整形信号,线性整形信号,触发整形信号等之一。
    • 18. 发明申请
    • Electrode catalyst with improved longevity properties and fuel cell using the same
    • 具有改善寿命性能的电极催化剂和使用其的燃料电池
    • US20070248862A1
    • 2007-10-25
    • US11488175
    • 2006-07-18
    • Byungwoo ParkChunjoong KimMyunggoo KangJin ParkHyuk KimMin Kim
    • Byungwoo ParkChunjoong KimMyunggoo KangJin ParkHyuk KimMin Kim
    • H01M8/10
    • H01M4/9083H01M4/8605H01M4/8828H01M4/921H01M4/925Y02E60/50Y10T29/49108
    • Disclosed is an electrode catalyst comprising: (a) a support; (b) metal catalyst particles supported on the support and formed of a catalytically active metal or metal-containing alloy; and (c) an anti-coarsening compound, which is dispersed in at least one region selected from the group consisting of interstitial spaces among the catalyst particles and contact sites between the support and the catalyst particles, and has a coarsening temperature higher than that of the catalyst. A method for preparing the electrode catalyst is also disclosed. Additionally, disclosed is a method for preventing metal catalyst particles supported on a support and formed of a catalytically active metal or metal-containing alloy from coarsening, the method comprising: dispersing an anti-coarsening compound having a coarsening temperature higher than that of the metal catalyst, in at least one region selected from the group consisting of interstitial spaces among the metal catalyst particles and contact sites between the support and the metal catalyst particles. The electrode catalyst is structurally stable while not causing degradation of electrochemical quality, and thus can improve the longevity properties of a fuel cell.
    • 公开了一种电极催化剂,包括:(a)载体; (b)负载在载体上并由催化活性金属或含金属的合金形成的金属催化剂颗粒; 和(c)分散在选自催化剂颗粒间的间隙和载体与催化剂颗粒之间的接触位置的至少一个区域中的抗粗化化合物,其粗化温度高于 催化剂。 还公开了一种制备电极催化剂的方法。 此外,公开了一种防止金属催化剂颗粒负载在由催化活性金属或含金属的合金中粗大化形成的方法,该方法包括:将具有高于金属的粗化温度的抗粗化化合物 催化剂,在选自金属催化剂颗粒之间的间隙和载体与金属催化剂颗粒之间的接触位置的至少一个区域中。 电极催化剂结构稳定,不会导致电化学质量的降低,从而可以改善燃料电池的寿命性能。