Patents by Inventor Enwel Zhang

Enwel 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).

  • Video-based system and method of elevator door detection
    Patent number: 8660700
    Abstract: A video-based system detects the position of elevator doors based on video data provided by one or more video detectors. Based on the detected position of the elevator doors, a distance between the elevator doors can be determined. The operation of the elevator doors is controlled based, at least in part, on the detected distance between the elevator doors.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: February 25, 2014
    Assignee: Otis Elevator Company
    Inventors: Zhen Jia, Pel-Yuan Peng, Enwel Zhang, Feng Chen, Zisheng Cao
  • VIDEO-BASED SYSTEM AND METHOD OF ELEVATOR DOOR DETECTION
    Publication number: 20110202178
    Abstract: A video-based system detects the position of elevator doors based on video data provided by one or more video detectors. Based on the detected position of the elevator doors, a distance between the elevator doors can be determined. The operation of the elevator doors is controlled based, at least in part, on the detected distance between the elevator doors.
    Type: Application
    Filed: May 22, 2008
    Publication date: August 18, 2011
    Applicant: Otis Elevator Company
    Inventors: Jia Zhen, Pel-Yuan Peng, Enwel Zhang, Feng Chen, Zisheng Cao