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公开(公告)号：US11588491B2
公开(公告)日：2023-02-21
申请号：US17296305
申请日：2020-08-10
发明人： Xiangye Wei , Liming Xiu
摘要： A signal generating electric circuit, a signal generating method, a digit-to-time converting electric circuit and a digit-to-time converting method. The signal generating electric circuit includes: a first generating electric circuit configured for, based on a first frequency control word and a reference time unit, generating a periodic first output signal; and a second generating electric circuit configured for, based on a second frequency control word and the reference time unit, generating a periodic second output signal. The first frequency control word includes a first integer part and a first fractional part, the second frequency control word includes a second integer part and a second fractional part, the first integer part is equal to the second integer part, the first fractional part is not zero, the second fractional part is zero, and a period of the first output signal and a period of the second output signal are not equal.
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公开(公告)号：US11177797B2
公开(公告)日：2021-11-16
申请号：US16633298
申请日：2019-01-02
发明人： Xiangye Wei , Liming Xiu
摘要： A measuring device and a measuring method are provided. The measuring device includes an oscillating circuit, a time average frequency-frequency lock loop, and a digital signal processing circuit. The oscillation circuit includes an element to be measured and is configured to output a signal having an oscillation frequency correlated with an element value of the element to be measured. The time average frequency-frequency lock loop is configured to receive the signal output by the oscillation circuit and output a frequency control word correlated with the oscillation frequency. The digital signal processing circuit is configured to read the frequency control word output by the time average frequency-frequency lock loop and obtain the element value of the element to be measured according to the read frequency control word. The measuring device is easy to integrate, has small volume, low power consumption, and high reliability, and can achieve high-precision measurement.
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公开(公告)号：US11139819B2
公开(公告)日：2021-10-05
申请号：US16651511
申请日：2019-04-23
发明人： Yuhai Ma , Xiangye Wei , Liming Xiu , Yiming Bai
摘要： A parameter determination method for a spread spectrum circuit, a clock spread spectrum method, a parameter determination device for a spread spectrum circuit, and a clock spread spectrum device are disclosed. The parameter determination method for the spread spectrum circuit includes: obtaining a base time unit and a target frequency; determining a spread spectrum depth coefficient according to the base time unit and the target frequency; determining whether the spread spectrum depth coefficient is greater than or equal to a base spread spectrum depth coefficient; if yes, determining the spread spectrum depth coefficient as a standard spread spectrum depth coefficient and determining a standard frequency control word according to the standard spread spectrum depth coefficient; and if no, adjusting the base time unit until a corresponding spread spectrum depth coefficient corresponding to the base time unit is greater than or equal to the base spread spectrum depth coefficient.
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公开(公告)号：US11101806B2
公开(公告)日：2021-08-24
申请号：US16633638
申请日：2019-01-02
发明人： Xiangye Wei , Liming Xiu
摘要： A frequency regulator and a frequency regulating method thereof, and an electronic device are disclosed. The frequency regulator includes: a signal processing circuit configured to generate a frequency control word according to a frequency regulating coefficient and an input frequency; and a frequency regulating circuit configured to receive the frequency control word and to generate and output an output signal having a target frequency according to the frequency control word. The frequency regulating coefficient is an arbitrary positive real number and is expressed as M.m, M is an integer portion of the frequency regulating coefficient and is a natural number, and m is a decimal portion of the frequency regulating coefficient.
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公开(公告)号：US20210119618A1
公开(公告)日：2021-04-22
申请号：US16975267
申请日：2019-10-21
发明人： Xiangye Wei , Liming Xiu , Yiming Bai , Xin Li
摘要： A digital clock circuit is provided. The digital clock circuit includes a first sub-circuit comprising a first digitally-controlled oscillator driven by a frequency control word to control a first output frequency synthesized from multiple first pulses, and a first frequency divider to generate a trigger signal having a frequency equal to 1/M of the first output frequency. The digital clock circuit also includes a second sub-circuit comprising a loop of feedback including a frequency detector to compare an input frequency with a feedback frequency, a controller to adjust the frequency control word, a second digitally-controlled oscillator driven by the frequency control word plus a constant to control a second output frequency synthesized from multiple second pulses induced by the trigger signal, and a second frequency divider to set the feedback frequency equal to 1/N of the second output frequency in the loop of feedback.
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26.发明公开公开(公告)号：US20240184528A1
公开(公告)日：2024-06-06
申请号：US17786486
申请日：2021-08-25
发明人： Xiangye Wei , Zhiliang Wang
IPC分类号： G06F7/58
CPC分类号： G06F7/582
摘要： A method for generating pseudo-random number is provided. The method includes receiving, by at least one processor, an initial state and a seed; performing, by the at least one processor, at least a cycle of state transfer calculation; and outputting a series of pseudo random numbers. A variable decimal seed is used in at least one step of the at least a cycle of state transfer calculation. The variable decimal seed is calculated in a previous step of the at least a cycle of state transfer calculation.
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27.发明授权公开(公告)号：US11949422B2
公开(公告)日：2024-04-02
申请号：US17642023
申请日：2021-03-09
发明人： Xiangye Wei , Liming Xiu
摘要： A pulse width modulation (PWM) circuit, a method for PWM, and an electronic device are provided. In the PWM circuit, a control word providing circuit can generate, based on an obtained target duty cycle, two target frequency control words with a ratio of the target duty cycle, and output the two target frequency control words to a pulse generation circuit, wherein a ratio of the first target frequency control word to the second target frequency control word is the target duty cycle; and the pulse generation circuit can output a target pulse signal with the target duty cycle under the control of the two target frequency control words.
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公开(公告)号：US11916557B2
公开(公告)日：2024-02-27
申请号：US17836419
申请日：2022-06-09
发明人： Xiangye Wei , Liming Xiu , Yuhai Ma
IPC分类号： H03K5/1252 , G06F1/04 , H03K5/00
CPC分类号： H03K5/1252 , G06F1/04 , H03K5/00006
摘要： A clock spread spectrum circuit, an electronic equipment, and a clock spread spectrum method are disclosed. The clock spread spectrum circuit (10) includes a control circuit (11) and a signal generation circuit (12). The control circuit (11) is configured to generate a frequency control word according to a modulation parameter, and the frequency control word changes discretely with time; and the signal generation circuit (12) is configured to receive the frequency control word and generate and output a spread spectrum output signal that is spectrum-spread according to the frequency control word, and the spread spectrum output signal corresponds to the frequency control word.
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公开(公告)号：US11868511B2
公开(公告)日：2024-01-09
申请号：US17794142
申请日：2021-08-05
发明人： Xiangye Wei , Yiming Bai , Liming Xiu
摘要： Provided is a digital fingerprint generator. The digital fingerprint generator includes: a control circuit, configured to generate a control word; a first pulse generation circuit, connected to the control circuit, and configured to output a first pulse signal in response to the control word; a second pulse generation circuit, connected to the control circuit, having a same structure as the first pulse generation circuit, and configured to output a second pulse signal in response to the control word; and an output circuit, connected to the first pulse generation circuit and the second pulse generation circuit, and configured to output a digital fingerprint based on the first pulse signal and the second pulse signal according to a predetermined first rule.
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30.发明公开公开(公告)号：US20230409074A1
公开(公告)日：2023-12-21
申请号：US18459053
申请日：2023-08-31
发明人： Xiangye Wei , Liming Xiu
IPC分类号： G06F1/08
CPC分类号： G06F1/08
摘要： A method for generating spread-spectrum synchronous clock signals includes comparing an input signal of a first frequency with a feedback signal of a second frequency in a loop of feedback; generating a first control signal and a second control signal; determining an integer part I of a control word F to track the first frequency; registering n levels for the first control signal and the second control signal to introduce n phase delays for randomly changing a fraction part r (0
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