Patents by Inventor Sang Beom Suk

Sang Beom Suk 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).

  • Method and compensating for time error of time/frequency generator using global positioning system
    Patent number: 5940458
    Abstract: A method for compensating for a time error of a time/frequency generator using a GPS which generates a signal to be used as the time/frequency source of a base station and an exchange in a CDMA mobile communication system, or to be used for the synchronization between the existing telephone exchanges. A time error estimation operation is performed for 600 seconds starting at a multiple of 1200 seconds while a least square estimation operation is advanced for the frequency estimation. Then, the time error is controlled in accordance with the estimated result, and an input data control value is compensated so that no error can occur in the frequency estimation operation based on the least square estimation. Therefore, the time error is compensated during the frequency estimation operation based on the least square estimation.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: August 17, 1999
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Sang Beom Suk