Patents by Inventor Yanqin Chen
Yanqin Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240104048Abstract: A transmitting apparatus includes a signal generation circuit and an adjustment circuit. The signal generation circuit is configured to send, to a receiving apparatus, a serial data signal that carries a training sequence and valid data, where the training sequence is used to train a skew or an equalization of the serial data signal, and the valid data is used to detect an amplitude of the serial data signal. The adjustment circuit is configured to receive indication information from the receiving apparatus, and adjust a transmission parameter of the serial data signal based on the indication information, where the transmission parameter includes at least one of the skew, the equalization, or the amplitude.Type: ApplicationFiled: December 1, 2023Publication date: March 28, 2024Inventors: Bingzhao Zhang, Yanqin Chen, Zhaohua Qian, Hangzhou Chen, Jiandong Ke, Guizhen Wang, Lijuan Tan
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Publication number: 20240007106Abstract: An interface circuit, a method for controlling the interface circuit, a chip, and a terminal device are provided. The interface circuit includes a first PMOS transistor, an input signal control circuit, a bias circuit, a signal input end, and an input/output end. The bias circuit includes a substrate bias voltage generation end and a bias voltage generation end. The bias circuit is coupled to a high-level power supply end, the input/output end, and a ground end. The input signal control circuit is connected to the signal input end, the bias voltage generation end, and a gate of the first PMOS transistor; a first electrode of the first PMOS transistor is connected to the high-level power supply end, and a second electrode of the first PMOS transistor is connected to the input/output end.Type: ApplicationFiled: September 15, 2023Publication date: January 4, 2024Inventors: Zhaohua Qian, Jingjing Wang, Yanqin Chen, Jiandong Ke
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Patent number: 11750198Abstract: Embodiments of this application disclose an RC oscillator that amplifies a difference between a first voltage and a second voltage by using a first amplifier and a second amplifier. The first amplifier may include a first amplification circuit and a second amplification circuit. The first amplification circuit and the second amplification circuit may share a same voltage-current conversion circuit. The RC oscillator disclosed in the embodiments of this application not only avoids noise introduced by the first amplifier, but also reduces internal noise of the RC oscillator and a jitter of a clock signal.Type: GrantFiled: December 29, 2021Date of Patent: September 5, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yanqin Chen, Chunbiao Wu, Yongwang Liu, Bingzhao Zhang
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Patent number: 11742863Abstract: The technology of this application relates to a phase-locked loop circuit that includes a phase frequency detector, a first voltage control module, a second voltage control module, a third voltage control module, a voltage-controlled oscillator, and a frequency divider. A first output end of the phase frequency detector is connected to a first input end of the first voltage control module and a first input end of the second voltage control module, a second output end of the phase frequency detector is connected to a second input end of the first voltage control module and a second input end of the second voltage control module, an output end of the first voltage control module.Type: GrantFiled: September 2, 2022Date of Patent: August 29, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventor: Yanqin Chen
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Publication number: 20220416793Abstract: The technology of this application relates to a phase-locked loop circuit that includes a phase frequency detector, a first voltage control module, a second voltage control module, a third voltage control module, a voltage-controlled oscillator, and a frequency divider. A first output end of the phase frequency detector is connected to a first input end of the first voltage control module and a first input end of the second voltage control module, a second output end of the phase frequency detector is connected to a second input end of the first voltage control module and a second input end of the second voltage control module, an output end of the first voltage control module.Type: ApplicationFiled: September 2, 2022Publication date: December 29, 2022Inventor: Yanqin CHEN
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Publication number: 20220123691Abstract: Embodiments of this application disclose an RC oscillator. The RC oscillator may amplify a difference between a first voltage and a second voltage by using a first amplifier and a second amplifier. The first amplifier may include a first amplification circuit and a second amplification circuit. The first amplification circuit and the second amplification circuit may share a same voltage-current conversion circuit. The RC oscillator disclosed in the embodiments of this application can not only avoid noise introduced by the first amplifier, but also reduce internal noise of the RC oscillator. This reduces a jitter of a clock signal.Type: ApplicationFiled: December 29, 2021Publication date: April 21, 2022Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yanqin CHEN, Chunbiao WU, Yongwang LIU, Bingzhao ZHANG
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Patent number: 10482617Abstract: A distance estimation method based on a handheld light field camera is disclosed and includes: S1: extracting parameters of the light field camera; S2: setting a reference plane and a calibration point; S3: refocusing a collected light field image on the reference plane, to obtain a distance between a main lens and a microlens array of the light field camera, and recording an imaging diameter of the calibration point on the refocused image; and S4: inputting the parameters of the light field camera, the distance between the main lens and the microlens array, and the imaging diameter of the calibration point on the refocused image to a light propagation mathematical model, and outputting a distance of the calibration point. The present application has high efficiency and relatively high accuracy.Type: GrantFiled: December 6, 2018Date of Patent: November 19, 2019Assignee: Graduate School at Shenzhen, Tsinghua UniversityInventors: Xin Jin, Yanqin Chen, Qionghai Dai
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Publication number: 20190114796Abstract: A distance estimation method based on a handheld light field camera is disclosed and includes: S1: extracting parameters of the light field camera; S2: setting a reference plane and a calibration point; S3: refocusing a collected light field image on the reference plane, to obtain a distance between a main lens and a microlens array of the light field camera, and recording an imaging diameter of the calibration point on the refocused image; and S4: inputting the parameters of the light field camera, the distance between the main lens and the microlens array, and the imaging diameter of the calibration point on the refocused image to a light propagation mathematical model, and outputting a distance of the calibration point. The present application has high efficiency and relatively high accuracy.Type: ApplicationFiled: December 6, 2018Publication date: April 18, 2019Inventors: Xin JIN, Yanqin CHEN, Qionghai DAI
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Patent number: 9667075Abstract: A wireless charging device (100) includes a shell (1), a heat conduction plate (2), a charging assembly (4) and a connecting assembly (5). The heat conduction plate (2) includes a first portion (201), a second portion (202) parallel with the first portion (201) and contacted with an inner surface of the shell (1), and a third portion (203) connecting a lower edge of the first portion (201) to a lower edge of the second portion (202). The charging assembly (4) is disposed between the first and second portions (201,202) and includes a circuit board, a chip (401) disposed on the circuit board and contacted with the first portion (201), a charging coil and an exciting unit. The connecting assembly (5) defines a first end electrically connected with the circuit board. A method for charging an apparatus with the wireless charging device (100) is also provided.Type: GrantFiled: April 15, 2014Date of Patent: May 30, 2017Assignee: BYD Company LimitedInventors: Minglin Li, Qingchun Yang, Xinhua Zhang, He Huang, Xinwei Cai, Zaixing Yang, Ying Zhou, Yanqin Chen, Xianjun Kong, Dajun Chen
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Publication number: 20160072321Abstract: A wireless charging device (100) includes a shell (1), a heat conduction plate (2), a charging assembly (4) and a connecting assembly (5). The heat conduction plate (2) includes a first portion (201), a second portion (202) parallel with the first portion (201) and contacted with an inner surface of the shell (1), and a third portion (203) connecting a lower edge of the first portion (201) to a lower edge of the second portion (202). The charging assembly (4) is disposed between the first and second portions (201,202) and includes a circuit board, a chip (401) disposed on the circuit board and contacted with the first portion (201), a charging coil and an exciting unit. The connecting assembly (5) defines a first end electrically connected with the circuit board. A method for charging an apparatus with the wireless charging device (100) is also provided.Type: ApplicationFiled: April 15, 2014Publication date: March 10, 2016Inventors: Minglin Li, Qingchun Yang, Xinhua Zhang, He Huang, Xinwei Cai, Zaixing Yang, Ying ZHOU, Yanqin Chen, Xianjun Kong, Dajun Chen