公开(公告)号：US20170153279A1

公开(公告)日：2017-06-01

申请号：US15360196

申请日：2016-11-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dae-Young CHUNG ,  Jae-Jin PARK ,  Dong-Hyuk LIM

IPC: G01R23/02 ,  G01R19/00 ,  H03D7/12 ,  H03F3/04 ,  H03K5/02

Abstract: A lock-in amplifier includes a clock signal generator configured to generate a first demodulation clock signal and a second demodulation clock signal having a phase difference of 90 degrees and a same demodulation frequency; and a detector configured to, based on an input signal, the first demodulation clock signal, and the second demodulation clock signal, provide an offset voltage corresponding to an offset of the lock-in amplifier in a first operation mode, and provide a first output voltage and a second output voltage, each of which correspond to a demodulation frequency component of the input signal in a second operation mode.

公开(公告)号：US20150120257A1

公开(公告)日：2015-04-30

申请号：US14447149

申请日：2014-07-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jae-Jin PARK ,  Jae-Ha KIM ,  Tae-Hwan KIM ,  Ji-Hwan HYUN

IPC: G06F17/50

CPC classification number: G06F17/5036 ,  G06F2217/10

Abstract: A method of verifying operation of an oscillator includes performing a Monte-Carlo simulation with respect to points in an initial-conditions space, and then judging whether a frequency error exists. An oscillation error is determined to exist when the frequency error exists. Additional operations include determining a point at which a probability of having a settling time longer than a maximum value, of a settling time obtained up to a present time, is maximum when the frequency error does not exist. The Monte-Carlo simulation is then performed on the determined point to judge whether the frequency error exists.

Abstract translation: 验证振荡器的操作的方法包括对初始状态空间中的点执行蒙特卡罗模拟，然后判断是否存在频率误差。 当存在频率误差时，确定存在振荡误差。 附加操作包括确定当频率误差不存在时，达到当前时间之前获得的建立时间的建立时间长于其最大值的概率的点是最大的点。 然后在确定的点上执行蒙特卡罗模拟，以判断是否存在频率误差。