Patents by Inventor Yong-Duck Hwang

Yong-Duck Hwang 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).

  • Locking and unlocking method in mobile telephone
    Patent number: 6801765
    Abstract: Disclosed is a method for locking and unlocking a mobile telephone. The method comprises setting a locking mode by receiving a locking voice, a locking-wait time and a locking number; receiving a locking voice when there is a key input in the locking mode; partially releasing the locking function when the received locking voice is identical to a registered locking voice; switching an operation mode of the mobile telephone to an idle mode, after partially releasing the locking function; and switching the operation mode of the mobile telephone back to the locking mode, when there is no key input in the idle mode until the locking-wait time has elapsed.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: October 5, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-Yun Roo, Youn-Man Lee, Yong-Duck Hwang