Patents by Inventor Dachuan ZHAO
Dachuan ZHAO 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: 20240139110Abstract: A sleep-regulating tablet allowing release by stages and a preparation method thereof are provided. The tablet structurally consists of a drug-containing delayed-release tablet core, a drug-free stomach-soluble coating, a drug-free enteric coating, a drug-containing immediate-release shell, and a shell stomach-soluble coating sequentially from inside to outside. An ideal dual-stage timed drug release mode may be realized, and is especially suitable for a sleep-regulating drug, such as ramelteon.Type: ApplicationFiled: August 16, 2022Publication date: May 2, 2024Applicant: OVERSEAS PHARMACEUTICALS, LTD.Inventors: Xiaoguang WEN, Jingya WANG, Dachuan ZHAO, Jun FAN, Chenliang ZHANG, Peipei WANG
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Publication number: 20230210779Abstract: An ibuprofen controlled-release tablet and a method for preparing same are provided. The controlled-release tablet is composed of a drug-containing immediate-release layer and a drug-containing sustained-release layer, wherein a mass of ibuprofen in the drug-containing sustained-release layer is greater than a mass of ibuprofen in the drug-containing immediate-release layer, and a ratio of the mass of the ibuprofen in the drug-containing sustained-release layer to the mass of the ibuprofen in the drug-containing immediate-release layer is ?7. The tablet of the present disclosure has an effective analgesic effect for 24 h after administration.Type: ApplicationFiled: March 8, 2023Publication date: July 6, 2023Applicant: OVERSEAS PHARMACEUTICALS, LTD.Inventors: Xiaoguang WEN, Xiaofeng HUANG, Dachuan ZHAO, Jun FAN, Chenliang ZHANG, Peipei WANG, Min LI
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Patent number: 11295550Abstract: An image processing method comprises: acquiring an actual image of a specified target from a video stream collected by a camera; identifying an area not shielded by the VR HMD and an area shielded by the VR HMD of the face of the specified target from the actual image, and acquiring first facial image data corresponding to the area not shielded; obtaining second facial image data matching the first facial image data according to the first facial image data and a preset facial expression model, wherein the second facial image data correspond to the area shielded; and fusing the first facial image data and the second facial image data to generate a composite image. An image processing device comprises a first acquiring unit, an identifying unit, a second acquiring unit and a generating unit, and is for performing the steps of the method described above.Type: GrantFiled: June 26, 2018Date of Patent: April 5, 2022Inventors: Tianrong Dai, Yuge Zhu, Dachuan Zhao, Xiang Chen
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Publication number: 20210374390Abstract: An image processing method comprises: acquiring an actual image of a specified target from a video stream collected by a camera; identifying an area not shielded by the VR HMD and an area shielded by the VR HMD of the face of the specified target from the actual image, and acquiring first facial image data corresponding to the area not shielded; obtaining second facial image data matching the first facial image data according to the first facial image data and a preset facial expression model, wherein the second facial image data correspond to the area shielded; and fusing the first facial image data and the second facial image data to generate a composite image. An image processing device comprises a first acquiring unit, an identifying unit, a second acquiring unit and a generating unit, and is for performing the steps of the method described above.Type: ApplicationFiled: June 26, 2018Publication date: December 2, 2021Inventors: Tianrong DAI, Yuge ZHU, Dachuan ZHAO, Xiang CHEN
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Publication number: 20210279504Abstract: Disclosed are a method and an apparatus for processing feature point matching result, the first image and the second image are placed reversely, and the matching feature point pair between the first image and the second image is determined by using the feature point matching algorithm; the straight-line equation between each of the feature point pair is made mathematically, and the intersection between each straight line and other straight line is determined; the valid intersection group and the geometric center point thereof are determined according to the distance between each of the intersection and other intersection; and the judgment area of the feature point pair is determined according to the geometric center point, and whether the feature point pair is a correct matching result or not is determined according to whether a straight line between the feature point pair passes through the judgment area or not.Type: ApplicationFiled: July 24, 2018Publication date: September 9, 2021Applicant: GOERTEK INC.Inventors: Weiyu CAO, Xiang CHEN, Dachuan ZHAO
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Patent number: 11106422Abstract: A method for processing display data comprises: the host divides the display area into a central area and an edge area according to the field of view of a head-mounted display; segments each frame of the display data into first display data corresponding to the central area and second display data corresponding to the edge area; processes the first display data and the second display data according to a first transmission factor and a second transmission factor to obtain first transmission data and second transmission data and sends them to the head-mounted display; and the head-mounted display performs image reconstruction to the received first transmission data and second transmission data, to obtain the displayed image corresponding to the frame of display data, and outputs and display it.Type: GrantFiled: December 31, 2019Date of Patent: August 31, 2021Assignee: GOERTEK INC.Inventors: Tianrong Dai, Yuge Zhu, Dachuan Zhao, Xiang Chen
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Patent number: 11100361Abstract: Disclosed are a method and an apparatus for processing feature point matching result, the first image and the second image are placed reversely, and the matching feature point pair between the first image and the second image is determined by using the feature point matching algorithm; the straight-line equation between each of the feature point pair is made mathematically, and the intersection between each straight line and other straight line is determined; the valid intersection group and the geometric center point thereof are determined according to the distance between each of the intersection and other intersection; and the judgment area of the feature point pair is determined according to the geometric center point, and whether the feature point pair is a correct matching result or not is determined according to whether a straight line between the feature point pair passes through the judgment area or not.Type: GrantFiled: July 24, 2018Date of Patent: August 24, 2021Assignee: GOERTEK INC.Inventors: Weiyu Cao, Xiang Chen, Dachuan Zhao
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Patent number: 10915168Abstract: An input method and apparatus of a device. The method includes: tracking and recording movement of an eyeball gaze point of a user on a display screen of the device, to obtain a current eyeball gaze point movement trajectory; judging whether the current eyeball gaze point movement trajectory matches with a preset eyeball gaze point movement trajectory in a movement trajectory database; wherein the preset eyeball gaze point movement trajectories indicate paths of the movement of the eyeball gaze point on the display screen according to a preset length range within a preset time period; if matched, determining a corresponding input instruction by using the matched eyeball gaze point movement trajectory, and completing an input operation according to the input instruction; and if not matched, not conducting an input operation. The input method and apparatus of a device can conduct input according to the eyeball movement of the user.Type: GrantFiled: November 16, 2017Date of Patent: February 9, 2021Assignee: GOERTEK INC.Inventors: Tianrong Dai, Yuge Zhu, Dachuan Zhao, Xiang Chen
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Patent number: 10897530Abstract: An input method, device and system applied to a mobile smart terminal. The method includes: establishing communication connection with a virtual reality device; collecting input information of a user on the mobile smart terminal; and generating a corresponding operating instruction according to the input information and a corresponding matching relationship between preset instruction and input information in a preset instruction database, and sending the generated operating instruction to the virtual reality device, to enable the virtual reality device to execute a corresponding operation according to the operating instruction. An input device and an input system corresponding to the method are also provided.Type: GrantFiled: November 15, 2017Date of Patent: January 19, 2021Assignee: Goertek Inc.Inventors: Tianrong Dai, Yuge Zhu, Dachuan Zhao, Xiang Chen
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Publication number: 20200204783Abstract: A method and device for processing image data are disclosed.Type: ApplicationFiled: May 18, 2018Publication date: June 25, 2020Applicant: Goertek Inc.Inventors: Tianrong DAI, Yuge ZHU, Dachuan ZHAO, Xiang CHEN
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Patent number: 10645299Abstract: The present application provides a method for tracking and shooting a moving target and a tracking device, firstly, feature points of a template image corresponding to each shooting angle is extracted in advance, after that, only a feature point of a currently shot target image needs to be calculated when matching, and then the feature points of the target image is matched with the feature points of the template image corresponding to each shooting angle, the shooting angel corresponding to the matched template image is determined as the shooting angle of the currently shot target image; if the shooting angel of the currently shot target image does not coincide with the preset shooting angle of the target, the tracking device is moved to track and shoot the target, so that the shooting angel of the target coincides with the preset shooting angle of the target, greatly reducing the calculation amount of the detection and matching of the feature point and improving the real-time performance of the tracking andType: GrantFiled: July 31, 2017Date of Patent: May 5, 2020Assignee: GOERTEK INC.Inventors: Weiyu Cao, Xiang Chen, Dachuan Zhao
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Publication number: 20200133607Abstract: A method for processing display data comprises: the host divides the display area into a central area and an edge area according to the field of view of a head-mounted display; segments each frame of the display data into first display data corresponding to the central area and second display data corresponding to the edge area; processes the first display data and the second display data according to a first transmission factor and a second transmission factor to obtain first transmission data and second transmission data and sends them to the head-mounted display; and the head-mounted display performs image reconstruction to the received first transmission data and second transmission data, to obtain the displayed image corresponding to the frame of display data, and outputs and display it.Type: ApplicationFiled: December 31, 2019Publication date: April 30, 2020Applicant: GOERTEK INC.Inventors: Tianrong DAI, Yuge ZHU, Dachuan ZHAO, Xiang CHEN
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Patent number: 10620903Abstract: A method for processing display data and a virtual reality device. The method comprises: the host divides the display area into a central area and an edge area according to the field of view of a head-mounted display; segments each frame of the display data into first display data corresponding to the central area and second display data corresponding to the edge area; processes the first display data and the second display data according to a first transmission factor and a second transmission factor to obtain first transmission data and second transmission data and sends them to the head-mounted display; and the head-mounted display performs image reconstruction to the received first transmission data and second transmission data, to obtain the displayed image corresponding to the frame of display data, and outputs and display it. The virtual reality device comprises the above host and head-mounted display.Type: GrantFiled: November 17, 2017Date of Patent: April 14, 2020Assignee: GOERTEK INC.Inventors: Tianrong Dai, Yuge Zhu, Dachuan Zhao, Xiang Chen
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Publication number: 20200111345Abstract: A user behavior monitoring method and a wearable device are provided. The method comprises: providing an inertial sensor in a wearable device; at the beginning of each data indicator acquiring phases, after a user has worn the wearable device, monitoring and collecting historical movement data of the user in a preset statistical period by the inertial sensor, and acquiring a predictive indicator according to a changing trend of the historical movement data; in real-time monitoring, collecting real-time movement data of the user, and judging whether the user has an abnormal behavior according to the real-time movement data, the predictive indicator acquired in the data indicator acquiring phase and a preset strategy; and sending an alarm notification when it is determined that the user has an abnormal behavior. The device can perform customized and high-accuracy behavior monitoring with respect to different users.Type: ApplicationFiled: July 21, 2017Publication date: April 9, 2020Inventors: Yan Li, Dachuan Zhao, Xin Zhao, Waner Liu
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Publication number: 20190354171Abstract: An input method and apparatus of a device. The method includes: tracking and recording movement of an eyeball gaze point of a user on a display screen of the device, to obtain a current eyeball gaze point movement trajectory; judging whether the current eyeball gaze point movement trajectory matches with a preset eyeball gaze point movement trajectory in a movement trajectory database; wherein the preset eyeball gaze point movement trajectories indicate paths of the movement of the eyeball gaze point on the display screen according to a preset length range within a preset time period; if matched, determining a corresponding input instruction by using the matched eyeball gaze point movement trajectory, and completing an input operation according to the input instruction; and if not matched, not conducting an input operation. The input method and apparatus of a device can conduct input according to the eyeball movement of the user.Type: ApplicationFiled: November 16, 2017Publication date: November 21, 2019Applicant: Goertek Inc.Inventors: Tianrong DAI, Yuge ZHU, Dachuan ZHAO, Xiang CHEN
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Publication number: 20190335034Abstract: An input method, device and system applied to a mobile smart terminal. The method includes: establishing communication connection with a virtual reality device; collecting input information of a user on the mobile smart terminal; and generating a corresponding operating instruction according to the input information and a corresponding matching relationship between preset instruction and input information in a preset instruction database, and sending the generated operating instruction to the virtual reality device, to enable the virtual reality device to execute a corresponding operation according to the operating instruction. An input device and an input system corresponding to the method are also provided.Type: ApplicationFiled: November 15, 2017Publication date: October 31, 2019Applicant: Goertek Inc.Inventors: Tianrong DAI, Yuge ZHU, Dachuan ZHAO, Xiang CHEN
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Publication number: 20190281224Abstract: The present application provides a method for tracking and shooting a moving target and a tracking device, firstly, feature points of a template image corresponding to each shooting angle is extracted in advance, after that, only a feature point of a currently shot target image needs to be calculated when matching, and then the feature points of the target image is matched with the feature points of the template image corresponding to each shooting angle, the shooting angel corresponding to the matched template image is determined as the shooting angle of the currently shot target image; if the shooting angel of the currently shot target image does not coincide with the preset shooting angle of the target, the tracking device is moved to track and shoot the target, so that the shooting angel of the target coincides with the preset shooting angle of the target, greatly reducing the calculation amount of the detection and matching of the feature point and improving the real-time performance of the tracking andType: ApplicationFiled: July 31, 2017Publication date: September 12, 2019Applicant: Goertek Inc.Inventors: Weiyu CAO, Xiang CHEN, Dachuan ZHAO
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Publication number: 20190235817Abstract: A method for processing display data and a virtual reality device. The method comprises: the host divides the display area into a central area and an edge area according to the field of view of a head-mounted display; segments each frame of the display data into first display data corresponding to the central area and second display data corresponding to the edge area; processes the first display data and the second display data according to a first transmission factor and a second transmission factor to obtain first transmission data and second transmission data and sends them to the head-mounted display; and the head-mounted display performs image reconstruction to the received first transmission data and second transmission data, to obtain the displayed image corresponding to the frame of display data, and outputs and display it. The virtual reality device comprises the above host and head-mounted display.Type: ApplicationFiled: November 17, 2017Publication date: August 1, 2019Applicant: Goertek Inc.Inventors: Tianrong Dai, Yuge Zhu, Dachuan Zhao, Xiang Chen