Patents by Inventor Daoning Zhang
Daoning Zhang 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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Patent number: 12031825Abstract: Provided is a calibration-free positioning method and system.Type: GrantFiled: March 22, 2019Date of Patent: July 9, 2024Assignee: Nolo Co., Ltd.Inventors: Yiming Zhang, Jianing Zhang, Daoning Zhang
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Patent number: 11620846Abstract: Provided are a data processing method for multi-sensor fusion, a positioning apparatus and a VR device. The method includes: calculating a pose of a physical center by using data of at least one sensor set in a first positioning period; obtaining the predicted pose of the physical center according to an inertial navigation of the pose of the physical center; calculating a three-dimensional coordinate pose of each sensor set in a second positioning period; calculating, based on the three-dimensional coordinate pose, third inertial navigation data of each sensor set in the second positioning period; obtaining the converted poses of the physical center respectively through the third inertial navigation data and a pose relationship between each sensor and the physical center; and obtaining the predicted pose of each sensor set based on the converted poses of the physical center.Type: GrantFiled: December 29, 2020Date of Patent: April 4, 2023Assignee: NOLO CO., LTD.Inventors: Yiming Zhang, Daoning Zhang, Jianing Zhang
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Patent number: 11500089Abstract: Disclosed are a control method and a control device for an ultrasonic receiving device. The control method includes: determining a target receiver of the ultrasonic receiving device, where the ultrasonic receiving device includes at least two ultrasonic receivers, and the target receiver is one of the at least two ultrasonic receivers on the ultrasonic receiving device that is the nearest to an ultrasonic transmitting device; and controlling a state of each of the at least two ultrasonic receivers on the ultrasonic receiving device based on the determined target receiver. Thus, the ultrasonic ranging error is reduced, and the accuracy of measurement is improved.Type: GrantFiled: March 16, 2018Date of Patent: November 15, 2022Assignee: Nolo Co., Ltd.Inventors: Yiming Zhang, Jianing Zhang, Daoning Zhang
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Patent number: 11500455Abstract: Provided are a video streaming system, and a corresponding video streaming method and video streaming apparatus. The video streaming system includes a terminal and a VR device. Application platform software and server streaming software are installed on the terminal. Client streaming software is installed on the VR device, the client streaming software is configured to send posture data to the server streaming software on the terminal, the server streaming software is configured to send the posture data to the application platform software, and the application platform software is configured to render a picture. The hardware configuration of the terminal itself is utilized for picture processing, and satisfactory pictures can be obtained on the screen of the VR device. On the other hand, the picture is rendered according to prediction positioning data/prediction posture data, thereby effectively reducing picture jitter and display delay.Type: GrantFiled: October 15, 2019Date of Patent: November 15, 2022Assignee: Nolo Co., Ltd.Inventors: Ruiyuan Ran, Jianing Zhang, Daoning Zhang
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Publication number: 20210357020Abstract: Provided are a video streaming system, and a corresponding video streaming method and video streaming apparatus. The video streaming system includes a terminal and a VR device. Application platform software and server streaming software are installed on the terminal. Client streaming software is installed on the VR device, the client streaming software is configured to send posture data to the server streaming software on the terminal, the server streaming software is configured to send the posture data to the application platform software, and the application platform software is configured to render a picture. The hardware configuration of the terminal itself is utilized for picture processing, and satisfactory pictures can be obtained on the screen of the VR device. On the other hand, the picture is rendered according to prediction positioning data/prediction posture data, thereby effectively reducing picture jitter and display delay.Type: ApplicationFiled: October 15, 2019Publication date: November 18, 2021Applicant: NOLO CO., LTDInventors: Ruiyuan Ran, Jianing Zhang, Daoning Zhang
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Publication number: 20210201011Abstract: Provided are a data processing method for multi-sensor fusion, a positioning apparatus and a VR device. The method includes: calculating a pose of a physical center by using data of at least one sensor set in a first positioning period; obtaining the predicted pose of the physical center according to an inertial navigation of the pose of the physical center; calculating a three-dimensional coordinate pose of each sensor set in a second positioning period; calculating, based on the three-dimensional coordinate pose, third inertial navigation data of each sensor set in the second positioning period; obtaining the converted poses of the physical center respectively through the third inertial navigation data and a pose relationship between each sensor and the physical center; and obtaining the predicted pose of each sensor set based on the converted poses of the physical center.Type: ApplicationFiled: December 29, 2020Publication date: July 1, 2021Applicant: NOLO CO., LTD.Inventors: Yiming Zhang, Daoning Zhang, Jianing Zhang
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Publication number: 20210102811Abstract: Provided is a calibration-free positioning method and system.Type: ApplicationFiled: March 22, 2019Publication date: April 8, 2021Applicant: NOLO CO., LTD.Inventors: Yiming Zhang, Jianing Zhang, Daoning Zhang
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Patent number: 10962633Abstract: A three-dimensional space detection system, including: a locating base station, a label device to be located, and a computing device. The locating base station synchronizes a base time point to the label device to be located, sends an ultrasonic signal to the label device to be located, rotationally sends a first laser plane signal about a first rotation axis, and rotationally sends a second laser plane signal about a second rotation axis perpendicular to the first rotation axis. The label device to be located synchronizes a base time point from the locating base station, detects the ultrasonic signal, the first laser plane signal and the second laser plane signal.Type: GrantFiled: March 14, 2018Date of Patent: March 30, 2021Assignee: NOLO CO., LTDInventor: Daoning Zhang
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Patent number: 10512059Abstract: Provided is a positioning base station includes: a rotating laser plane emitting unit, a distance measuring device and a synchronization device. The rotating laser plane emitting unit is configured to rotate around a rotation axle, and emit two laser plane signals having a preset angle therebetween. The two laser plane signals are configured to scan a space. The distance measuring device is configured to emit a distance measuring signal configured to measure a distance between the positioning base station and a device to be positioned. The synchronization device is configured to transmit a synchronization signal configured to synchronize time of the positioning base station and the device to be positioned.Type: GrantFiled: August 8, 2017Date of Patent: December 17, 2019Assignee: NOLO CO., LTD.Inventors: Jianing Zhang, Daoning Zhang
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Publication number: 20190174455Abstract: Provided is a positioning base station includes: a rotating laser plane emitting unit, a distance measuring device, and a synchronization device. The rotating laser plane emitting unit is configured to rotate around a rotation axle, and emit two laser plane signals having a preset angle therebetween. The two laser plane signals are configured to scan a space. The distance measuring device is configured to emit a distance measuring signal configured to measure a distance between the positioning base station and a device to be positioned. The synchronization device is configured to transmit a synchronization signal configured to synchronize time of the positioning base station and the device to be positioned.Type: ApplicationFiled: August 8, 2017Publication date: June 6, 2019Applicant: NOLO CO., LTD.Inventors: JIANING ZHANG, DAONING ZHANG
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Publication number: 20180217246Abstract: A three-dimensional space detection system, including: a locating base station, a label device to be located, and a computing device. The locating base station synchronizes a base time point to the label device to be located, sends an ultrasonic signal to the label device to be located, rotationally sends a first laser plane signal about a first rotation axis, and rotationally sends a second laser plane signal about a second rotation axis perpendicular to the first rotation axis. The label device to be located synchronizes a base time point from the locating base station, detects the ultrasonic signal, the first laser plane signal and the second laser plane signal.Type: ApplicationFiled: March 14, 2018Publication date: August 2, 2018Inventor: Daoning Zhang