Patents by Inventor Xianfei LI

Xianfei LI 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).

  • Patent number: 11488389
    Abstract: In some implementations, a method of verifying operation of a sensor is provided. The method includes causing a sensor to obtain sensor data at a first time, wherein the sensor obtains the sensor data by emitting waves towards a detector. The method also includes determining that the detector has detected the waves at a second time. The method further includes receiving the sensor data from the sensor at a third time. The method further includes verifying operation of the sensor based on at least one of the first time, the second time, or the third time.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: November 1, 2022
    Assignees: BAIDU USA LLC, BAIDU.COM TIMES TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Shuai Wang, Manjiang Zhang, Yaoming Shen, Xiangfei Zhou, Lingchang Li, Xianfei Li
  • Publication number: 20210383133
    Abstract: In some implementations, a method of verifying operation of a sensor is provided. The method includes causing a sensor to obtain sensor data at a first time, wherein the sensor obtains the sensor data by emitting waves towards a detector. The method also includes determining that the detector has detected the waves at a second time. The method further includes receiving the sensor data from the sensor at a third time. The method further includes verifying operation of the sensor based on at least one of the first time, the second time, or the third time.
    Type: Application
    Filed: August 30, 2019
    Publication date: December 9, 2021
    Inventors: Shuai WANG, Manjiang ZHANG, Yaoming SHEN, Xiangfei ZHOU, Lingchang LI, Xianfei LI
  • Patent number: 11136048
    Abstract: The disclosure describes various embodiments for online system-level validation of sensor synchronization. According to an embodiment, an exemplary method of analyzing sensor synchronization in an autonomous driving vehicle (ADV) include the operations of acquiring raw sensor data from a first sensor and a second sensor mounted on the ADV, the raw sensor data describing a target object in a surrounding environment of the ADV; and generating an accuracy map based on the raw sensor data in view of timestamps extracted from the raw sensor data. The method further includes the operations of generating a first bounding box and a second bounding box around the target object using the raw sensor data; and performing an analysis of the first and second bounding boxes and the accuracy map using a predetermined algorithm in view of one or more pre-configured sensor settings to determine whether the first sensor and the second sensor are synchronized with each other.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: October 5, 2021
    Assignees: BAIDU USA LLC, BAIDU.COM TIMES TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Shuai Wang, Shuangcheng Guo, Xianfei Li, Chongchong Li, Jian Sheng, Davy Huang, Manjiang Zhang
  • Publication number: 20210024096
    Abstract: The disclosure describes various embodiments for online system-level validation of sensor synchronization. According to an embodiment, an exemplary method of analyzing sensor synchronization in an autonomous driving vehicle (ADV) include the operations of acquiring raw sensor data from a first sensor and a second sensor mounted on the ADV, the raw sensor data describing a target object in a surrounding environment of the ADV; and generating an accuracy map based on the raw sensor data in view of timestamps extracted from the raw sensor data. The method further includes the operations of generating a first bounding box and a second bounding box around the target object using the raw sensor data; and performing an analysis of the first and second bounding boxes and the accuracy map using a predetermined algorithm in view of one or more pre-configured sensor settings to determine whether the first sensor and the second sensor are synchronized with each other.
    Type: Application
    Filed: July 22, 2019
    Publication date: January 28, 2021
    Inventors: Shuai WANG, Shuangcheng GUO, Xianfei LI, Chongchong LI, Jian SHENG, Davy HUANG, Manjiang ZHANG