Lowe, Hauptman, Ham & Berner, LLP
Module for controlling light emitting diode current for selective feedback, apparatus and method for driving light emitting diodes using the same
The present invention provides a module for controlling an LED current for selective feedback, an apparatus and a method for driving LEDs using the same. The module for controlling the LED current, which is connected to a plurality of LED channels receiving driving powers supplied from at least one DC/DC converter and controls currents of the LED channels through a constant current, the LED current controlling module includes: an operation mode selector for selecting an operation mode according to an inputted enable signal level; a channel divider for dividing a plurality of LED channels into at least one group according to the selected operation mode; and a minimum voltage selector for selecting an LED channel with a minimum voltage, obtained by comparing voltages detected from each of lower ends of the LED channels included in each of one or more divided groups.
Samsung Electro-Mechanics Co., Ltd.
H H Y
H05B H05B Y02B
inventional inventional additional
Bo Hyun Jung Hyun Seung Kon Jung Sun
Hwang Kim Kong Kwon