Patents by Inventor Ji Wan Cha

Ji Wan Cha 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).

  • OFFSET COMPENSATION METHOD OF CURRENT SENSOR AND MOTOR DRIVING SYSTEM
    Publication number: 20140167669
    Abstract: An offset compensation method of a current sensor is provided for determining whether an offset compensation of the current sensor is abnormal, and a motor driving system includes the current sensor. The offset compensation method includes: compensating for an offset of the current sensor, and determining whether the offset compensation of the current sensor is abnormal.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 19, 2014
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Jae-Sang Lim, Seong Yeop Lim, Gu Bae Kang, Ji Wan Cha