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1. 发明公开

US20230341447A1 METHOD, DEVICE AND SYSTEM FOR MEASURING FREQUENCY DOMAIN CHARACTERISTICS, AND STORAGE MEDIUM 审中-公开
公开(公告)号：US20230341447A1
公开(公告)日：2023-10-26
申请号：US18164095
申请日：2023-02-03
申请人： CHANGXIN MEMORY TECHNOLOGIES, INC.
发明人： Maosong MA , Yagi FANG , Jianbin LIU
IPC分类号： G01R23/00 , G01R19/00 , G01R23/06 , G01R31/28 , G01R31/3183
CPC分类号： G01R23/005 , G01R19/0038 , G01R23/06 , G01R31/2801 , G01R31/2851 , G01R31/318307
摘要： A method for measuring frequency domain characteristics of a PDN having an output terminal connected to a power supply end of a functional circuit. The method includes: a to-be-measured output interface of the functional circuit is acquired; the to-be-measured output interface is controlled to output a first level signal having a first preset rule; remaining at least one output interface of the functional circuit, other than the to-be-measured output interface, is controlled to output a second level signal having a second preset rule according to a first frequency; changing voltage values corresponding to the first frequency and output by the to-be-measured output interface are acquired; and a characteristic impedance of the PDN at the first frequency is determined based on the changing voltage values corresponding to the first frequency.

2. 发明申请

US20180343014A1 Idle Tone Dispersion Device And Frequency Ratio Measuring Device 审中-公开
公开(公告)号：US20180343014A1
公开(公告)日：2018-11-29
申请号：US15987099
申请日：2018-05-23
申请人： Seiko Epson Corporation
发明人： Masayoshi TODOROKIHARA
IPC分类号： H03M3/00 , G01R23/00
CPC分类号： H03M3/372 , G01R23/005 , H03M3/30 , H03M3/3283 , H03M3/346 , H03M3/466 , H03M3/472
摘要： An idle tone dispersion device outputs a frequency delta-sigma modulation signal obtained by using either one of a reference signal and a measured signal to perform frequency delta-sigma modulation of the other and dispersing an idle tone. The idle tone dispersion device includes n (n is any natural number equal to or larger than 2) frequency delta-sigma modulation sections and an adder configured to add up output signals of the n frequency delta-sigma modulation sections and output the frequency delta-sigma modulation signal. Each of the n frequency delta-sigma modulation sections uses either one of the reference signal and the measured signal to perform the frequency delta-sigma modulation of the other. At least one of the reference signal and the measured signal includes jitter including a frequency component higher than a frequency of an idle tone of an output signal of the frequency delta-sigma modulation section.

3. 发明授权

US10056888B2 RF phase offset detection circuit 有权
公开(公告)号：US10056888B2
公开(公告)日：2018-08-21
申请号：US15431933
申请日：2017-02-14
申请人： Qorvo US, Inc.
发明人： Christian Rye Iversen
IPC分类号： H03K5/13 , G01R25/00 , H02H3/30 , H03K5/00 , G01R23/00
CPC分类号： H03K5/13 , G01R23/005 , G01R25/005 , H02H3/302 , H03K2005/00286
摘要： An RF phase offset detection system, which includes a first RF phase detector and a second RF phase detector, and measures a first phase offset between a first RF signal and a second RF signal, is disclosed. Each of the first RF signal and the second RF signal has a common RF frequency. The first RF phase detector detects and filters the first RF signal and the second RF signal to provide a first detection signal. The second RF phase detector receives and phase-shifts the second RF signal to provide a phase-shifted RF signal. The second RF phase detector further detects and filters the first RF signal and the phase-shifted RF signal to provide a second detection signal, such that a combination of the first detection signal and the second detection signal is representative of the first phase offset.

4. 发明授权

US09851416B2 Systems and methods for magnetic field sensors with self-test 有权
公开(公告)号：US09851416B2
公开(公告)日：2017-12-26
申请号：US14337613
申请日：2014-07-22
申请人： Allegro MicroSysterns, LLC
发明人： P. Karl Scheller , James E. Burgess , Steven E. Snyder , Kristann L. Moody , Devon Fernandez , Andrea Foletto
IPC分类号： G01R33/00 , G01P3/487 , G01P3/488 , G01P21/02 , G01R23/00 , G01P3/44 , G01P13/00 , G01R33/06 , G01D5/244
CPC分类号： G01R33/0023 , G01D5/24476 , G01P3/44 , G01P3/487 , G01P3/488 , G01P13/00 , G01P21/02 , G01R23/005 , G01R33/06
摘要： Systems, methods and apparatuses for magnetic field sensors with self-test include a detection circuit to detect speed and direction of a target. One or more circuits to test accuracy of the detected speed and direction may be included. One or more circuits to test accuracy of an oscillator may also be included. One or more circuits to test the accuracy of an analog-to-digital converter may also be included. Additionally one or more IDDQ and/or built-in-self test (BEST) circuits may be included.

5. 发明申请

US20170227585A1 HARMONIC DISTORTION SEPARATION METHOD, NONLINEAR CHARACTER DETERMINATION METHOD AND APPARATUS AND SYSTEM 审中-公开
公开(公告)号：US20170227585A1
公开(公告)日：2017-08-10
申请号：US15425392
申请日：2017-02-06
申请人： FUJITSU LIMITED
发明人： Hao CHEN , Zhenning Tao
IPC分类号： G01R25/00
CPC分类号： G01R25/005 , G01R23/005 , G01R23/02 , G01R23/20 , G01R31/3167 , H04B17/0085 , H04B17/12
摘要： A harmonic distortion separation method, nonlinear character determination method, apparatus and system where a phase difference between an inherent harmonic and a generated harmonic is determined by using multiple groups of input power, output power and fundamental magnitudes of a memoryless nonlinear transfer function of a nonlinear model of a system to be measured, and power of a harmonic generated by the system to be measured is separated by using the phase difference. In an embodiment, the phase difference between the inherent harmonic and the generated harmonic is first determined by using an assumption that a model coefficient is a constant according to the set nonlinear model, then the harmonic separation is performed by using the phase difference, and the power of the harmonic generated by the system to be measured is calculated.

6. 发明授权

US09606007B2 Semiconductor device and measurement method 有权
公开(公告)号：US09606007B2
公开(公告)日：2017-03-28
申请号：US14222114
申请日：2014-03-21
申请人： LAPIS SEMICONDUCTOR CO., LTD.
发明人： Yosuke Iwasa
IPC分类号： G01K7/20 , G01R23/00
CPC分类号： G01K7/203 , G01R23/005
摘要： The present invention provides a semiconductor device and a measurement method that enables high precision measurement of temperature or humidity or the like over a wide range. A semiconductor device of the present invention determines which is faster out of a reference oscillation and a thermistor oscillation, and using the faster oscillation as a reference, measures a count value based on the other oscillation. Moreover, the count based on the faster oscillation is employed as a reference value, and a count value based on the other oscillation when the reference value is taken as a measurement value. A frequency ratio is computed based on the reference value and the measurement value, and based on the computed frequency ratio, a table expressing correspondence relationships between frequency ratio and temperature is referred to and a temperature acquired.

7. 发明申请

US20160178687A1 PHASE CONTROL DEVICE 有权
标题翻译：相控装置
公开(公告)号：US20160178687A1
公开(公告)日：2016-06-23
申请号：US14905128
申请日：2013-08-06
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Aya YAMAMOTO , Tomohito MORI , Daigo MATSUMOTO
IPC分类号： G01R31/04 , H01H71/10 , G01R31/327 , G01R19/175 , G01R25/00
CPC分类号： G01R31/041 , G01R19/175 , G01R23/005 , G01R25/00 , G01R29/18 , G01R31/327 , H01H33/59 , H01H71/10
摘要： A phase control device includes a connection error detection unit. The connection error detection unit includes a phase sequence detection unit that detects a phase sequence of voltage signals, a phase sequence detection unit that detects a phase sequence of current signals, a collation unit that collates the phase sequence of the voltage signals and the phase sequence of the current signals and determines that a connection error is present when the phase sequences are different, phase difference detection units that detect a phase difference between the voltage signal and the current signal, and a phase difference determination unit that determines, when the phase differences output from the phase difference detection units fall without a determination range, that a connection error is present.
摘要翻译：相位控制装置包括连接错误检测单元。连接错误检测单元包括检测电压信号的相序的相位序列检测单元，检测电流信号的相位序列的相位序列检测单元，将电压信号的相位序列和相位序列进行比较的核对单元并且当相序不同时确定存在连接错误，检测电压信号和电流信号之间的相位差的相位差检测单元以及相位差确定单元，当相位差来自相位差检测单元的输出没有确定范围，存在连接错误。

8. 发明授权

US09329214B2 Frequency judgment device, voltage comparator circuit, and frequency measurement device 有权
标题翻译：频率判断装置，电压比较电路和频率测量装置
公开(公告)号：US09329214B2
公开(公告)日：2016-05-03
申请号：US13499633
申请日：2010-09-30
申请人： Fujio Kurokawa
发明人： Fujio Kurokawa
IPC分类号： G01R23/02 , H03K5/26 , G01R23/00 , G01R23/15 , H03K5/19
CPC分类号： G01R23/005 , G01R23/02 , G01R23/15 , H03K5/19 , H03K5/26
摘要： The frequency decision device determines frequency of the measured rectangular signal by simple and easy means. The frequency decision device inputs the measured rectangular signal that frequency (or period) changes dynamically. It generates a rectangular reference signal of predetermined on width τ synchronizing to the edge based on a positive going edge of this measured rectangle signal. And it watches the order of measured rectangle signal and falling edges of the rectangular reference signal. When this sequential order reversed, it detects that length of the ON time of ON time of the measured rectangle signal and the measured rectangular signal reversed.
摘要翻译：频率决定装置通过简单易用的方式确定测量的矩形信号的频率。频率判定装置输入频率（或周期）动态变化的被测矩形信号。它基于该测量的矩形信号的正向边沿，生成与边缘同步的预定宽度τ的矩形参考信号。并且它观察矩形参考信号的测量矩形信号和下降沿的顺序。当该顺序顺序颠倒时，它检测测量的矩形信号的ON时间的ON时间和测得的矩形信号的长度。

9. 发明授权

US07095254B2 Method for producing a control signal which indicates a frequency error 有权
标题翻译：用于产生指示频率误差的控制信号的方法
公开(公告)号：US07095254B2
公开(公告)日：2006-08-22
申请号：US10836633
申请日：2004-04-29
申请人： Karl Schrodinger
发明人： Karl Schrodinger
IPC分类号： H03D13/00
CPC分类号： G01R23/005 , H03K5/26 , H03L7/087 , H03L7/095 , H04L7/033 , H04L2027/0073
摘要： A method which provides a very simple way of forming a control signal if the frequencies differ too greatly from one another between a useful signal and a reference signal. A control signal is produced which indicates that the frequency error between the frequencies of a useful signal and the frequency of a reference signal exceeds a prescribed error limit value, where the useful signal and the reference signal are used to produce a pulsed signal whose pulse length is proportional to the frequency difference between the useful signal and the reference signal. The pulse length is then compared with a prescribed maximum pulse length, and the control signal is produced if the pulse length exceeds the prescribed maximum pulse length.
摘要翻译：如果频率在有用信号和参考信号之间彼此太大差异太大，则提供形成控制信号的非常简单的方法。产生控制信号，其指示有用信号的频率与参考信号的频率之间的频率误差超过规定的误差极限值，其中使用有用信号和参考信号产生脉冲信号，脉冲信号与有用信号和参考信号之间的频率差成比例。然后将脉冲长度与规定的最大脉冲长度进行比较，并且如果脉冲长度超过规定的最大脉冲长度，则产生控制信号。

10. 发明申请

US20060114032A1 Clock frequency detect with programmable jitter tolerance 失效
标题翻译：具有可编程抖动容限的时钟频率检测
公开(公告)号：US20060114032A1
公开(公告)日：2006-06-01
申请号：US11000439
申请日：2004-11-30
申请人： Charles Geer , Robert Shearer
发明人： Charles Geer , Robert Shearer
IPC分类号： H03D13/00
CPC分类号： G01R23/005 , H03D13/00
摘要： An apparatus and method is disclosed for programmable determination of frequency, phase, and jitter relationship of a first clock and a second clock in an electronic system. In a first, initialization, mode, a first register and a second register are initialized with a first bit pattern and a second bit pattern, respectively. In a second, normal, mode, the first clock is coupled to the first register and the second clock is coupled to the second register. A compare unit observes the bit patterns of the first and second registers and reports when one or more predetermined relationships between the first clock and the second clock occur.
摘要翻译：公开了用于可编程确定电子系统中第一时钟和第二时钟的频率，相位和抖动关系的装置和方法。首先，初始化，模式，第一寄存器和第二寄存器分别以第一位模式和第二位模式初始化。在第二正常模式中，第一时钟耦合到第一寄存器，第二时钟耦合到第二寄存器。当第一时钟和第二时钟之间的一个或多个预定关系发生时，比较单元观察第一和第二寄存器的位模式并报告。

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