Patents by Inventor Hyon-Sock Chang

Hyon-Sock Chang 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).

  • Device and method for acquiring phase of spreading code in CDMA communication system
    Patent number: 6912227
    Abstract: A code acquisition device securing reliable code acquisition and reducing a time required for a code acquisition procedure. In the device, a sampler samples an input signal, and a searcher continuously searches for a spreading code used for the sampled signal until the phase of the spreading code is acquired. A verifier verifies whether the phase of the spreading code used for the sampled signal is acquired, according to the search result of the searcher. The searcher initializes and restart the verifier whenever the phase of the spreading code is searched.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: June 28, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyon-Sock Chang, Yong-Hoon Lee, Hyung-Woon Park, Sun-Bin Kim