Samsung Electronics Co., Ltd.

Dong-jun Keum

Duck-young Jung

Jin-sub Choi

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. The output level control device as a capacitor controls the level of the output thereof by a time constant obtained from the resistance of a resistor and the capacitance of the capacitor within the controller.

Growing community of inventors

Pucheon, South Korea

Dong-jun Keum