公开(公告)号：KR101590701B1

公开(公告)日：2016-02-02

申请号：KR1020140041189

申请日：2014-04-07

Applicant: 서울대학교산학협력단

Inventor： 김재하 ,  류시강

IPC: H03L7/093 ,  H03L7/08

Abstract: 본실시예에의한디지털위상고정루프는디지털제어코드에의하여출력신호의주파수가제어되는디지털제어발진기와, 디지털제어발진기의출력신호주파수를분주하여출력하는분주기와, 기준신호와분주기출력신호사이의주파수및 위상차를검출하여그에상응하는오차신호를출력하는시간-디지털변환기(Time to Digital Converter) 및오차신호를입력받아디지털제어코드를형성하는디지털루프필터(Digital Loop Filter)를포함하며, 디지털루프필터는, 인테그레이션이득(integration gain)을가지는인테그레이션경로(integration path)와, 인테그레이션경로의신호를부궤환(negative feedback)하는부궤환경로(negative feedback path)를가지며, 부궤환경로는인테그레이션경로의출력신호를스케일링이득값으로스케일링하는이득스케일러(gain scaler)를포함한다.

公开(公告)号：KR1020140100673A

公开(公告)日：2014-08-18

申请号：KR1020130013653

申请日：2013-02-07

Applicant: 서울대학교산학협력단

Inventor： 김현창 ,  김재하 ,  정덕균

IPC: H05B37/02

CPC classification number: H05B33/0827 ,  H05B33/083 ,  H02M3/1582 ,  H05B33/0812

Abstract: An apparatus for driving a light emitting device according to an embodiment of the present invention includes: a power supply part for supplying a DC current including a ripple with a constant period; and a light emitting device array. The light emitting device array includes a plurality of unit light emitting device arrays. Each unit light emitting device array includes a light emitting device string; a switch for supplying or blocking the DC current supplied to the light emitting device string from the power supply part; a capacitor for smoothing the DC current supplied by the power supply part; and a control part for controlling the switch to be switched on or off. The control part divides a period of the DC current into m sections where the number ″m″ is relatively prime to the number (n) of the unit light emitting device arrays, and controls the switch so that a DC current of each section is applied to the unit light emitting device arrays in sequence.

Abstract translation: 根据本发明实施例的用于驱动发光器件的装置包括：电源部分，用于提供包括恒定周期的纹波的DC电流; 和发光器件阵列。 发光器件阵列包括多个单位发光器件阵列。 每个单位发光器件阵列包括发光器件串; 用于从供电部分提供或阻挡提供给发光器件串的DC电流的开关; 用于平滑由电源部分提供的DC电流的电容器; 以及用于控制开关被打开或关闭的控制部分。 控制部将直流电流的周期分割为与单位发光元件阵列的数量（n）相对应的数量“m”的m个部分，并且控制开关，使得每个部分的直流电流被施加 依次连接到单元发光器件阵列。

公开(公告)号：KR1020140021466A

公开(公告)日：2014-02-20

申请号：KR1020120152968

申请日：2012-12-26

Applicant: 서울대학교산학협력단

Inventor： 김재하 ,  하정익 ,  강태욱

IPC: H03K17/687 ,  H02M1/08

Abstract: A controlling device for an electronic device according to the present invention controls a pulse generator outputting a pulse having a controllable duty ratio; a switching unit switching a power supply source and a ground connection power source with the pulse and connecting that with an output terminal; and an inductor unit of which one end is connected to the output terminal of the switching unit. The controlling device for an electronic device controls the electronic device connected to the inductor unit by controlling the duty ratio of the pulse.

Abstract translation: 根据本发明的电子设备的控制装置控制输出具有可控占空比的脉冲的脉冲发生器; 切换单元，用脉冲切换电源和接地连接电源，并与输出端连接; 以及电感器单元，其一端连接到开关单元的输出端子。 电子装置的控制装置通过控制脉冲的占空比来控制连接到电感器单元的电子装置。