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11.发明授权公开(公告)号：US11848679B2
公开(公告)日：2023-12-19
申请号：US16975258
申请日：2019-10-09
Inventor： Xiangye Wei , Liming Xiu
IPC: H03L7/00 , H03L7/089 , H03K19/173 , H03L7/099
CPC classification number: H03L7/089 , H03K19/1737 , H03L7/0991
Abstract: The present application discloses a circuit for generating spread-spectrum synchronous clock signal. The circuit includes a frequency detector comprising a fraction controller configured to compare an input signal of a first frequency with a feedback signal of a second frequency in a loop of feedback to generate a first control signal and a second control signal alternately for determining a control word to track the first frequency and a phase-shift controller configured to register n levels for the first control signal and the second control signal to introduce n phase delays for changing a fraction part of the control word randomly to provide a broadened boundary. The circuit also includes a digitally controlled oscillator configured to generate a synthesized periodic signal based on a base time unit, the first frequency, and the control word, with the second frequency being locked within the broadened boundary of the first frequency.
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12.发明授权公开(公告)号：US11646728B2
公开(公告)日：2023-05-09
申请号：US17765933
申请日：2021-03-09
Inventor： Xiangye Wei , Liming Xiu
Abstract: A clock signal generation circuit, a method for generating a clock signal, and an electronic device are provided, relating to the field of communications technology. In the clock signal generation circuit, an initial clock providing circuit can generate an initial clock signal having an initial frequency; a control word providing circuit can determine a target frequency offset of the initial frequency based on a detected target parameter and generate a frequency control word based on the target frequency offset; a target clock generating circuit can generate a target clock signal having a target output frequency based on the frequency control word and the initial clock signal, wherein the target output frequency is negatively correlated with a value of the frequency control word and positively correlated with the initial frequency.
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公开(公告)号：US20220029627A1
公开(公告)日：2022-01-27
申请号：US17296672
申请日：2020-08-13
Inventor： Xiangye Wei , Liming Xiu
Abstract: 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 and the second fractional part are not equal, and a period of the first output signal and a period of the second output signal are not equal.
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14.发明授权公开(公告)号：US11184020B2
公开(公告)日：2021-11-23
申请号：US16465283
申请日：2018-11-13
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Liming Xiu
Abstract: An information representation method, a multi-value calculation circuit and an electronic system are provided. The information representation method includes: acquiring a switching rate of a signal; and adopting the switching rate of the signal to represent information.
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15.发明申请公开(公告)号：US20210111751A1
公开(公告)日：2021-04-15
申请号：US16975261
申请日：2019-10-09
Inventor： Xiangye Wei , Liming Xiu , Yuhai Ma , Xin Li
Abstract: A digital transceiver is provided. The digital transceiver includes a clock generator configured to generate a first clock signal having a first frequency of a fixed value and a transmitter driven by the first clock signal of the first frequency to transmit data. Additionally, the digital transceiver includes an inverter coupled to the clock generator to generate an inverted first clock signal of the first frequency. Further, it includes a frequency detector configured to compare the first frequency with a second frequency of a feedback signal in a loop of feedback to determine a frequency control word F. Furthermore, it includes a digitally-controlled oscillator driven by the frequency control word F in the loop of feedback to output a second clock signal with a time-average frequency substantially synchronous to the first frequency with a boundary spread and a receiver driven by the second clock signal to receive the data.
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Patent Agency Ranking
公开(公告)号：US11917052B2
公开(公告)日：2024-02-27
申请号：US17333110
申请日：2021-05-28
Inventor： Xiangye Wei , Liming Xiu
CPC classification number: H04L9/0643 , G06F5/01
Abstract: The present disclosure provides a hash algorithm circuit, a hash algorithm method, and an electronic device. The hash algorithm circuit is used to reduce fixed-length parallel data, and the reduced identifier can be used as an index reference, an identifier ID, an address extension bit, information summary, and so on. The hash algorithm circuit has the characteristics of low power consumption, low cost, etc., and can be integrated in a digital circuit.
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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
Inventor： Xiangye Wei , Liming Xiu
Abstract: 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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18.发明授权公开(公告)号：US11474556B2
公开(公告)日：2022-10-18
申请号：US16769297
申请日：2019-03-29
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yanfu Li , Liming Xiu , Xin Li
IPC: H04B10/516 , G06F1/10 , G06F1/08
Abstract: The present disclosure provides an optical communication drive circuit and method, an optical communication transmitter, an optical communication system, and a vehicle. The optical communication drive circuit includes a clock circuit and a modulation circuit. The clock circuit is configured to output a clock signal with an initial frequency signal as an input under control of information to be transmitted. The clock signal includes alternating first and second frequency signals, the first frequency signal and the second frequency signal having different frequencies and being generated based on the initial frequency signal; and the modulation circuit is configured to modulate an optical signal by the clock signal to obtain a modulated optical signal.
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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
Inventor： Xiangye Wei , Liming Xiu
Abstract: 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
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yuhai Ma , Xiangye Wei , Liming Xiu , Yiming Bai
Abstract: 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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