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    • 1. 发明申请
    • CIRCUITS AND METHODS FOR CONTROLLING A LIGHT SOURCE
    • 用于控制光源的电路和方法
    • US20110140621A1
    • 2011-06-16
    • US12856795
    • 2010-08-16
    • Xinmin YIChing-Chuan KUOJianping WANGFeng SHI
    • Xinmin YIChing-Chuan KUOJianping WANGFeng SHI
    • H05B37/02
    • H05B33/0854
    • A driving circuit for controlling a light source includes a frequency controller and a switch module. The frequency controller is operable for receiving a first dimming signal for controlling the light source to achieve a predetermined brightness, and for generating a second dimming signal having a frequency out of one or more predetermined ranges according to the first dimming signal when the frequency of the first dimming signal is within the predetermined ranges. The switch module coupled to the frequency controller is operable for switching on and off alternately to achieve the predetermined brightness of the light source according to the second dimming signal when the frequency of the first dimming signal is within the predetermined ranges and according to the first dimming signal when the frequency of the first dimming signal is out of the predetermined ranges.
    • 用于控制光源的驱动电路包括频率控制器和开关模块。 频率控制器可操作用于接收用于控制光源以实现预定亮度的第一调光信号,并且用于根据第一调光信号产生具有根据第一调光信号的一个或多个预定范围的频率的第二调光信号, 第一调光信号在预定范围内。 耦合到频率控制器的开关模块可操作用于当第一调光信号的频率在预定范围内且根据第一调光时交替地接通和断开以根据第二调光信号实现光源的预定亮度 当第一调光信号的频率超出预定范围时,发出信号。
    • 3. 发明申请
    • FINGERPRINT TEMPLATE BASED ON FUZZY FEATURE POINT INFORMATION AND FINGERPRINT IDENTIFICATION METHOD
    • 基于模糊特征点信息和指纹识别方法的指纹模板
    • US20160371532A1
    • 2016-12-22
    • US14902288
    • 2014-12-24
    • Feng SHI
    • Feng SHIZhongqiu LIUJian LI
    • G06K9/00
    • G06K9/00087G06K9/00067G06K9/00093
    • The present invention discloses a fingerprint template and a fingerprint identification method based on fuzzy feature point information. The fingerprint template contains several pieces of incomplete feature point information, including registration information and comparison information, wherein only coordinate information and attribute information of feature points and a value of a polynomial are recorded. In the polynomial P(Xi)=C0+C1Xi+C2Xi2 . . . CnXin, n is an order of the polynomial, and Xi is a numerical value obtained by quantifying one or multiple pieces of feature point information except the registration information in the feature point information and is a coefficient having a certain preset rule. Corresponding feature point information of a scene fingerprint is substituted into the polynomial to figure out C0-Cn, and whether the C0-Cn meet the preset rule is judged to judge whether the scene fingerprint is matched with a template fingerprint.
    • 本发明公开了一种基于模糊特征点信息的指纹模板和指纹识别方法。 指纹模板包含几个不完整的特征点信息,包括注册信息和比较信息,其中仅记录特征点的坐标信息和属性信息以及多项式的值。 在多项式P(Xi)= C0 + C1Xi + C2Xi2中。 。 。 CnXin,n是多项式的阶数,Xi是通过对特征点信息中的注册信息以外的一个或多个特征点信息进行量化而得到的数值,并且是具有某个预定规则的系数。 将场景指纹的相应特征点信息代入多项式中以得出C0-Cn,并判断C0-Cn是否符合预设规则,以判断场景指纹是否与模板指纹匹配。