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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
Inventor： Xiangye Wei , Liming Xiu
Abstract: 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
Inventor： Xiangye Wei , Liming Xiu , Yiming Bai , Xin Li
Abstract: 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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公开(公告)号：US10715154B2
公开(公告)日：2020-07-14
申请号：US15761708
申请日：2017-08-31
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Liming Xiu
Abstract: A digitally controlled oscillator, including: a frequency divider chain, configured to perform frequency division on an input clock signal to produce K basic clock signals, wherein frequencies and periods of the K basic dock signals are the same and a time difference between two adjacent basic clock signals is a basic time unit; and a frequency synthesizer, configured to receive the K basic clock signals from the frequency divider chain, determine a first period and a second period according to the basic time unit and a frequency control word, and generate a synthetic clock signal based on the K basic clock signals, wherein the synthetic clock signal uses the first period and the second period in an alternate manner.
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公开(公告)号：US10582597B2
公开(公告)日：2020-03-03
申请号：US16080827
申请日：2017-12-15
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Liming Xiu
IPC: H05B41/392 , H05B33/08 , H03K3/017 , G09G3/34
Abstract: A signal generating circuit and a signal generating method, a driving circuit of a light emitting device and a display device. The signal generating circuit includes: a control circuit, configured to calculate at least one of frequency control word information or duty-cycle control word information according to an instruction; and a pulse-width adjusting circuit, configured to generate a pulse signal according to the at least one of the frequency control word information or the duty-cycle control word information.
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公开(公告)号：US10541696B2
公开(公告)日：2020-01-21
申请号：US16215857
申请日：2018-12-11
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Liming Xiu
Abstract: An electronic device includes: an acquisition circuit, configured to collect the current environmental information for characterizing the environment of the electronic device; a processing circuit, configured to receive the current environmental information from the acquisition circuit; determine a target frequency control word corresponding to the current environmental information according to a preset expected operating status of the electronic device; and input the target frequency control word to the TAF-DPS clock generator; the TAF-DPS clock generator, configured to generate a clock signal according to the target frequency control word, and output the clock signal to a functional circuit; the functional circuit, configured to operate in accordance with the clock signal to make the electronic device reach the expected operating status.
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Patent Agency Ranking
公开(公告)号：US10324489B2
公开(公告)日：2019-06-18
申请号：US15690625
申请日：2017-08-30
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Liming Xiu
Abstract: The present application provides a signal generator, comprising a control circuit configured to receive input information, and generate variable control word information based on the received input information; a base time unit generation circuit configured to generate a base time unit; and a signal generation circuit configured to receive the variable control word information from the control circuit and receive the base time unit from the base time unit generation circuit, and generate a target signal having a variable frequency based on the received variable control word information and the received base time unit.
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公开(公告)号：US12231131B2
公开(公告)日：2025-02-18
申请号：US18498801
申请日：2023-10-31
Inventor： Xiangye Wei , Liming Xiu
Abstract: An integrated circuit is provided. The integrated circuit includes: a clock source configured to: generate a clock signal of the integrated circuit; at least two functional circuits; and at least two clock generators corresponding to the functional circuits and configured to: determine initial phases of the corresponding functional circuits, and generate clock signals of the functional circuits based on the clock signal of the integrated circuit and the initial phases, so as to keep the clock signals of all the functional circuits synchronized, wherein the initial phases are determined based on transmission distances, over which the clock signal of the integrated circuit is transmitted from the clock source to the functional circuits, and loads of the functional circuits.
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公开(公告)号：US12160271B2
公开(公告)日：2024-12-03
申请号：US17767763
申请日：2021-03-09
Inventor： Xiangye Wei , Liming Xiu , Yiming Bai , Xin Li
IPC: H04B10/50
Abstract: An optical communication device, an optical communication system, and a method for establishing a communication connection are provided, relating to communications technology. In the optical communication device, the first driving circuit can control, based on the generated first target plaintext, the optical signal transmitting circuit to transmit the first optical signal, and control, based on the generated first key, the optical signal transmitting circuit to transmit the second optical signal. That is, an optical communication device that detects the optical signals can establish, based on the optical signals, a communication connection with the optical communication device that transmits the optical signals.
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29.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
Inventor： Xiangye Wei , Liming Xiu
Abstract: 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
Inventor： Xiangye Wei , Liming Xiu , Yuhai Ma
IPC: H03K5/1252 , G06F1/04 , H03K5/00
CPC classification number: H03K5/1252 , G06F1/04 , H03K5/00006
Abstract: 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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