Patents by Inventor Qing Chang

Qing Chang 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).

  • Publication number: 20240064449
    Abstract: This application discloses a sound collecting method, an electronic device, and a system. The system includes a first electronic device, a left-ear TWS earphone, and a right-ear TWS earphone. In the method, microphones of the first electronic device, the left-ear TWS earphone, and the right-ear TWS earphone may form a first microphone array. When the first electronic device detects a user operation of starting video recording, the first microphone array performs sound collecting to obtain a joint microphone array signal. The first electronic device may perform noise reduction processing on the joint microphone array signal. According to the method, in a near field area of the first microphone array, a target sound signal can be enhanced, an ambient noise sound signal can be suppressed, and sound quality in a recorded video can be improved.
    Type: Application
    Filed: December 13, 2021
    Publication date: February 22, 2024
    Inventors: Kai Tao, Mingjie Yin, Qing Chang, Yao Jiang
  • Patent number: 11906217
    Abstract: An electronic expansion valve includes a valve seat assembly, a first pipe connecting portion, and a second pipe connecting portion. The valve seat assembly includes an outer wall portion, a valve port portion having a valve port, a first valve seat cavity, and a second valve seat cavity. The first valve seat cavity is located above the valve port portion. The second valve seat cavity is located below the valve port portion. The valve port is capable of communicating with the first valve seat cavity and the second valve seat cavity. The first pipe connecting portion is fixedly connected to the outer wall portion located above the valve port portion. The second pipe connecting portion is fixedly connected to the outer wall portion located below the valve port portion. The inner diameter of the second valve seat cavity is greater than the inner diameter of the second pipe connecting portion.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: February 20, 2024
    Assignee: Zhejiang Sanhua Intelligent Controls Co., Ltd.
    Inventors: Weixin He, Qing Chang, Ze Yuan, Zicheng Shen
  • Publication number: 20240027457
    Abstract: In one embodiment, a method of building an optimized color flow high parameter reagent and reagent kit cytometry panel for detection of aberrant cells in acute myeloid leukemia is disclosed using a spectral flow cytometer with a least three excitation lasers and thirty-eight color detectors. In another embodiment, a graphical user interface is disclosed generated by a server computer from a fluorochrome database and displayed by a client computer to assist in the selection of a set of fluorochromes for use in an assay to analyze biological samples. The GUI can display spectra graphs to visually show how fluorochromes may overlap and can generate similarity indexes for the paired fluorochrome interference and a complexity index for overall many to many interferences generated by a selected group or set of fluorochromes.
    Type: Application
    Filed: July 14, 2023
    Publication date: January 25, 2024
    Inventors: Qing Chang, Mark Edinger, Jingyi Chen, Jun Deng
  • Publication number: 20230239378
    Abstract: Described herein are systems, methods, and software to manage the identification of control packets in an encapsulation header. In one implementation, a computing system may receive a Geneve packet at a network interface and determine that the Geneve packet includes an Operations and Management (OAM) flag. Once the OAM flag is identified, the computing system can select a processing queue from a plurality of processing queues for a main processing system of the computing system based on the OAM flag and assign the Geneve packet to the processing queue.
    Type: Application
    Filed: January 21, 2022
    Publication date: July 27, 2023
    Inventors: Yong Wang, Guolin Yang, Eduard Serra Miralles, Dexiang Wang, Qing Chang
  • Patent number: 11686124
    Abstract: One embodiment provides an electrical key for locking and unlocking an electrical lock. The electrical key includes an energy-transfer unit that includes a magnetic core and a coil wrapped around the magnetic core, a pulse generator configured to generate a first pulse sequence including alternating pulse on and pulse off cycles and a second pulse sequence comprising a continuous pulse train, and a modulator driver configured to modulate a voltage or current on the coil using the generated first or second pulse sequence, a measurement module configured to measure a current or voltage on the coil excited by the modulated voltage or current, respectively, a key-position determination module configured to determine a relative position between the electrical key and the electrical lock based on the measured current or voltage, and a communication interface for communicating with the electrical lock to facilitate the locking and unlocking of the electrical lock.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: June 27, 2023
    Assignee: Zhuhai Unitech Power Technology Co., Ltd.
    Inventors: Qing Chang, Hongwei Qiao, Jing Zhang
  • Publication number: 20230147435
    Abstract: An audio processing method includes establishing a wireless connection between a wireless headset and an electronic device, and establishing a wireless connection between the wireless headset and a charging case. The charging case collects a sound signal, generates first audio data, and sends the first audio data to the wireless headset. The wireless headset performs audio effect processing on the first audio data to obtain second audio data. The electronic device sends third audio data to the wireless headset. The wireless headset performs audio mixing processing on the second audio data and the third audio data to obtain fourth audio data and plays the fourth audio data.
    Type: Application
    Filed: March 3, 2021
    Publication date: May 11, 2023
    Inventors: Mingjie Yin, Haibo Miao, Qing Chang
  • Publication number: 20230143813
    Abstract: A compound of Formula I compound—Ovatodiolide which is safe and effective to use in a pharmaceutical composition for inhibition of SARS-CoV-2 is provided. The pharmaceutical composition comprising a safe and effective amount of a compound of Formula I compound—Ovatodiolide or pharmaceutically acceptable salts thereof, together with a pharmaceutically acceptable carrier, which has great potential to treat SARS-CoV-2 induced COVID-19 based on a safe and effective amount of a compound of Formula I compound—Ovatodiolide.
    Type: Application
    Filed: April 17, 2020
    Publication date: May 11, 2023
    Applicants: Peking University Shenzhen Graduate School, CNS Biotek Corp., Gansu Evergreen Pharmaceuticals, Co., Ltd.
    Inventors: Zhen Yang, Yew-Min Tzeng, Linqi Zhang, Junmin Quan, Qing Chang, Qi Zhang, Chien-Ming Lee
  • Patent number: 11628231
    Abstract: Microbial disinfection is performed using continuous or intermittent lighting using one or more narrow wavelength light sources. The light sources illuminate with narrow wavelength characteristics. The lighting provides a sufficiently high intensity for rapid microbial disinfection process, while reducing the average energy consumption for microbial disinfection during the microbial disinfection process by targeting multiple cellular sites along different inactivation pathways.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: April 18, 2023
    Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: King Lun Yeung, Qing Chang, Nga Ki Wong, Ning Zhan, Wei Han, Joseph Kai Cho Kwan, Javier Lopez Navas
  • Patent number: 11420257
    Abstract: An apparatus for efficiently preparing spherical metal powder for 3D printing includes a housing, a crucible and a powder collection area arranged in the housing, wherein a turnplate arranged in the collection area is an inlaid structure. A material having a poor thermal conductivity is selected as the base of the turnplate, and a metal material having a wetting angle less than 90° with respect to droplets is selected and embedded into the base to serve as an atomization plane of the turnplate. An air hole is disposed in the turnplate. The spherical metal powder for 3D printing combines electromagnetic force breaking capillary jet flow and centrifugal atomization, which breaks through the traditional metal split mode, and makes the molten metal in a fibrous splitting.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: August 23, 2022
    Assignees: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Wei Dong, Yao Meng, Sheng Zhu, Xiaoming Wang, Yang Zhao, Yanyang Wang, Fumin Xu, Zhaofeng Bai, Yang Han, Guobin Li, Wenyu Wang, Qing Chang, Zhiqiang Ren, Jing Shi, Guofeng Han, Tao Teng, Yu Sun, Zhiyong Qin
  • Publication number: 20220243238
    Abstract: A method for preparing V-type granular porous starch includes the following steps: mixing starch and an ethanol aqueous solution in a temperature of 100-150° C. to yield V-type granular starch; and adding a mixed enzyme including alpha-amylase and amyloglucosidase to a mixture of the V-type granular starch and the ethanol aqueous solution, to enzymatically hydrolyze the V-type granular starch to yield V-type granular porous starch.
    Type: Application
    Filed: December 31, 2021
    Publication date: August 4, 2022
    Inventors: Xing ZHOU, Zhengyu JIN, Qing CHANG, Ren WANG, Jinpeng WANG, Jianwei ZHAO, Aiquan JIAO, Jie LONG
  • Patent number: 11372232
    Abstract: The present disclosure provides a light valve, a display device and a display method. The light valve includes: at least one fixation member fixed onto a substrate; and at least one movable member capable of moving relative to the fixation member to switch the light valve between a first state where the light valve is provided with a slit through which a light beam passes and a second state where the light valve prevents the light beam from passing therethrough.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: June 28, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiao Fang, Wei He, Xinghua Li, Shi Cheng, Jian Yang, Wenqiang Chen, Qing Chang, Lixia Huang, Shou Ye
  • Patent number: 11344950
    Abstract: An apparatus includes a housing, a crucible disposed in the housing, and a collection bin. A turnplate disposed in a powder collection area is of an inlaid structure. A concentric circular groove is provided on the atomization plane. An air hole is provided in the turnplate. The present invention combines the pulsated orifice ejection method and the centrifugal atomization method, in cooperation with the turnplate structure and subjecting the turnplate surface to induction heating, so that a metal liquid is allowed to break through the split mode of traditional molten metal, achieves a fibrous split mode that can be implemented only when an atomizing medium is an aqueous or organic solution, and prepares a high-melting-point metal powder that meets requirements, and has a controllable particle size, high sphericity, no satellite droplets, and good flowability and spreadability, and is suitable for industrial production.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: May 31, 2022
    Assignees: DALIAN UNIVERSTTY OF TECHNOLOGY
    Inventors: Xiaoming Wang, Yang Zhao, Qing Chang, Wei Dong, Fumin Xu, Zhiqiang Ren, Sheng Zhu, Wenyu Wang, Jing Shi, Guofeng Han, Tao Teng, Yao Meng, Zhaofeng Bai, Yanyang Wang, Yang Han, Guobin Li, Dongyang Wang, Zhanwu Peng, Zhiyong Qin
  • Patent number: 11331724
    Abstract: An apparatus efficiently preparing ultrafine spherical metal powder includes a housing, a crucible and a powder collection area arranged in the housing. The turnplate arranged in the powder collection area is an inlaid structure. The part inlaid into the body part acts as an atomization plane of the turnplate. The atomization plane is provided with a concentric circular groove, and the turnplate is provided with an air hole. The apparatus is used for preparing ultrafine spherical metal powder by on-by-one droplets centrifugal atomization method, mainly combining the uniform droplet jet method and the centrifugal atomization method, which breaks through the traditional metal splitting model, makes the molten metal in a fibrous splitting, so as to efficiently prepare ultrafine spherical metal powder with narrow particle size distribution interval, high sphericity, good flowability, excellent spreadability, uniform and controllable size, no satellite droplets and suitable for industrial production.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: May 17, 2022
    Assignees: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Xiaoming Wang, Yang Zhao, Wenyu Wang, Wei Dong, Yao Meng, Qing Chang, Zhiqiang Ren, Jing Shi, Guofeng Han, Sheng Zhu, Tao Teng, Fumin Xu, Zhaofeng Bai, Yanyang Wang, Yang Han, Guobin Li, Yu Sun, Zhiyong Qin
  • Publication number: 20220084337
    Abstract: One embodiment of the present invention provides a smart lock-and-key system. The smart lock-and-key system can include a smart lock corresponding to a lock identifier and a smart key capable of locking and unlocking the smart lock. The smart key can include a first communication interface for communicating with the smart lock and a second communication interface for communicating with a mobile computing device. The smart key can be configured to obtain the lock identifier and receive, from the mobile computing device, an operation command based on the obtained lock identifier.
    Type: Application
    Filed: November 24, 2021
    Publication date: March 17, 2022
    Applicant: Zhuhai Unitech Power Technology Co., Ltd.
    Inventors: Qing Chang, Hongwei Qiao, Jing Zhang
  • Publication number: 20220001448
    Abstract: An apparatus for efficiently preparing spherical metal powder for 3D printing includes a housing, a crucible and a powder collection area arranged in the housing, wherein a turnplate arranged in the collection area is an inlaid structure. A material having a poor thermal conductivity is selected as the base of the turnplate, and a metal material having a wetting angle less than 90° with respect to droplets is selected and embedded into the base to serve as an atomization plane of the turnplate. An air hole is disposed in the turnplate. The spherical metal powder for 3D printing combines electromagnetic force breaking capillary jet flow and centrifugal atomization, which breaks through the traditional metal split mode, and makes the molten metal in a fibrous splitting.
    Type: Application
    Filed: September 25, 2019
    Publication date: January 6, 2022
    Inventors: Wei DONG, Yao MENG, Sheng ZHU, Xiaoming WANG, Yang ZHAO, Yanyang WANG, Fumin XU, Zhaofeng BAI, Yang HAN, Guobin LI, Wenyu WANG, Qing CHANG, Zhiqiang REN, Jing SHI, Guofeng HAN, Tao TENG, Yu SUN, Zhiyong Qing
  • Publication number: 20210396435
    Abstract: An electronic expansion valve includes a valve seat assembly, a first pipe connecting portion, and a second pipe connecting portion. The valve seat assembly includes an outer wall portion, a valve port portion having a valve port, a first valve seat cavity, and a second valve seat cavity. The first valve seat cavity is located above the valve port portion. The second valve seat cavity is located below the valve port portion. The valve port is capable of communicating with the first valve seat cavity and the second valve seat cavity. The first pipe connecting portion is fixedly connected to the outer wall portion located above the valve port portion. The second pipe connecting portion is fixedly connected to the outer wall portion located below the valve port portion. The inner diameter of the second valve seat cavity is greater than the inner diameter of the second pipe connecting portion.
    Type: Application
    Filed: October 25, 2019
    Publication date: December 23, 2021
    Applicant: Zhejiang Sanhua Intelligent Controls Co., Ltd
    Inventors: Weixin He, Qing Chang, Ze Yuan, Zicheng Shen
  • Patent number: 11189117
    Abstract: One embodiment of the present invention provides a smart lock-and-key system. The smart lock-and-key system can include a smart lock corresponding to a lock identifier and a smart key capable of locking and unlocking the smart lock. The smart key can include a first communication interface for communicating with the smart lock and a second communication interface for communicating with a mobile computing device. The smart key can be configured to obtain the lock identifier and receive, from the mobile computing device, an operation command based on the obtained lock identifier.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: November 30, 2021
    Assignee: Zhuhai Unitech Power Technology Co., Ltd.
    Inventors: Qing Chang, Hongwei Qiao, Jing Zhang
  • Publication number: 20210351016
    Abstract: A shield cooling assembly includes an adapter configured to fix a shield in the chamber. The adapter includes a first surface and a second surface facing an outer side surface of the shield and a bottom surface of a bottom wall of the shield, respectively. A predetermined gap is provided between the first surface and the outer side surface of the shield. The second surface is in contact with the bottom surface of the bottom wall of the shield. The adapter is provided with a cooling channel for transmitting a cooling medium to cool the shield.
    Type: Application
    Filed: July 23, 2021
    Publication date: November 11, 2021
    Inventors: Qing CHANG, Bing LI, Guodong BIAN
  • Publication number: 20210308763
    Abstract: An apparatus efficiently preparing ultrafine spherical metal powder includes a housing, a crucible and a powder collection area arranged in the housing. The turnplate arranged in the powder collection area is an inlaid structure. The part inlaid into the body part acts as an atomization plane of the turnplate. The atomization plane is provided with a concentric circular groove, and the turnplate is provided with an air hole. The apparatus is used for preparing ultrafine spherical metal powder by on-by-one droplets centrifugal atomization method, mainly combining the uniform droplet jet method and the centrifugal atomization method, which breaks through the traditional metal splitting model, makes the molten metal in a fibrous splitting, so as to efficiently prepare ultrafine spherical metal powder with narrow particle size distribution interval, high sphericity, good flowability, excellent spreadability, uniform and controllable size, no satellite droplets and suitable for industrial production.
    Type: Application
    Filed: September 25, 2019
    Publication date: October 7, 2021
    Inventors: Xiaoming WANG, Yang ZHAO, Wenyu WANG, Wei DONG, Yao MENG, Qing CHANG, Zhiqiang REN, Jing SHI, Guofeng HAN, Sheng ZHU, Tao TENG, Fumin XU, Zhaofeng BAI, Yanyang WANG, Yang HAN, Guobin LI, Yu SUN, Zhiyong Qing
  • Publication number: 20210308764
    Abstract: An apparatus includes a housing, a crucible disposed in the housing, and a collection bin. A turnplate disposed in a powder collection area is of an inlaid structure. A concentric circular groove is provided on the atomization plane. An air hole is provided in the turnplate. The present invention combines the pulsated orifice ejection method and the centrifugal atomization method, in cooperation with the turnplate structure and subjecting the turnplate surface to induction heating, so that a metal liquid is allowed to break through the split mode of traditional molten metal, achieves a fibrous split mode that can be implemented only when an atomizing medium is an aqueous or organic solution, and prepares a high-melting-point metal powder that meets requirements, and has a controllable particle size, high sphericity, no satellite droplets, and good flowability and spreadability, and is suitable for industrial production.
    Type: Application
    Filed: September 25, 2019
    Publication date: October 7, 2021
    Inventors: Xiaoming WANG, Yang ZHAO, Qing CHANG, Wei DONG, Fumin XU, Zhiqiang REN, Sheng ZHU, Wenyu WANG, Jing SHI, Guofeng HAN, Tao TENG, Yao MENG, Zhaofeng BAI, Yanyang WANG, Yang HAN, Guobin LI, Dongyang WANG, Zhanwu PENG, Zhiyong Qing