Patents by Inventor Dong-jun Keum

Dong-jun Keum 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).

  • Patent number: 5793320
    Abstract: A digital data level control circuit adopting a digital-to-analog conversion control mode is provided, in which a capacitor for removing popcorn (POP) noise is used towards an output end of a digital-to-analog converter portion and switching of a controller is controlled by a microcomputer to perform a desired level control, thereby effectively removing the POP noise. The digital data level control circuit includes a digital-to-analog converter portion for converting the digital data into analog data, a controller connected to an output end of the digital-to-analog converter portion, for controlling the level of the analog-converted data, and an out level control portion connected to one end of the controller, for smoothly controlling the level of the analog-converted output from the digital-to-analog converter portion.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: August 11, 1998
    Assignee: Samsung Electronics, Co, Ltd.
    Inventors: Dong-jun Keum, Jin-sub Choi, Duck-young Jung