Patents by Inventor Chang Bok Yang

Chang Bok Yang 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).

  • System for testing mobile handover
    Patent number: 9398466
    Abstract: Provided is a system for testing mobile handover which makes it possible to test a handover operation on a mobile side by providing an actual base station with a radio wave environment for causing mobile devices to move. The system is intended to test whether or not a handover operation of a mobile present in the service areas of at least three base stations is performed without interrupting service while the mobile moves from the service area of a currently connected base station to another spot.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: July 19, 2016
    Assignee: INNOWIRELESS CO., LTD.
    Inventors: Jin Soup Joung, Jong Min Kim, Chang Bok Yang, Myung Gu Kang
  • IQ CALIBRATION METHOD OF TEST DEVICE FOR WIRELESS COMMUNICATION SYSTEM SUCH AS DVB-H SYSTEM OR LIKE, DEVICE, AND TEST DEVICE MANUFACTURING METHOD
    Publication number: 20120259571
    Abstract: The present invention relates to an automatic calibration method of a test device for testing a wireless communication system such as a DVB-H or the like, a device, and a manufacturing method thereof, and more specifically, to a calibration method and device for providing an automatic calibration data generation function, in which the same frequency characteristic of the test device is maintained in various frequency bands and the test device is capable of generating an exact and reliable test signal.
    Type: Application
    Filed: December 24, 2009
    Publication date: October 11, 2012
    Applicant: INNOWIRELESS CO., LTD.
    Inventors: Myoung Koo Kang, Chang Bok Yang, Jong Min Kim, Jin Soup Joung