baber/WOPTO huggingface dataset:
Patent KR-20160130252-A (KR)
Title: 복합 결함 분류기
Inventor: PLIHAL MARTIN
IPC: H01L21/66
Filed: 2015-03-04
Abstract: 웨이퍼에서 검출된 결함을 분류하기 위한 방법 및 시스템이 제공된다. 하나의 방법은, 웨이퍼에서 검출된 결함에 대한 정보를 복합 결함 분류기에 포함된 적어도 2개의 결함 분류기의 각각에 입력하는 단계를 포함한다. 이러한 방법은, 또한, 복합 결함 분류기에서 2 이상의 빈에 할당되는 적어도 하나의 결함에 대하여, 2 이상의 빈에 할당된 순위에 기초하여 적어도 하나의 결함에 대한 빈을 결정하는 단계를 포함한다. 순위는 2 이상의 빈에 대하여 결정된 하나 이상의 특성에 기초하여 2 이상의 빈에 할당되고, 하나 이상의 특성은 훈련 세트에서의 결함에 대한 미리 정의된 결함 분류와 적어도 2개의 결함 분류기에 의한 상기 훈련 세트에서의 결함에 대하여 결정된 결함 분류의 비교에 기초하여 결정된다.
Patent KR-20160119275-A (KR)
Title: 강화 콘크리트용 보강재
Inventor: BOGUSLAVSCHI NIKOLAI
IPC: E04C5/01
Filed: 2016-01-21
Abstract: 중심 섹션에 접속되고 간격들에 의해 서로로부터 분리된 적어도 두 개의 꽃잎들을 갖는 평평한 단면을 갖는, 로드가 내접되는 실린더의 지름의 1 내지 10배의 일정한 또는 가변적인 피치를 갖는 나선형 리바 용접가능 금속 로드가 개시되었다.  삼각형 꽃잎들은 자신들의 꼭짓점에 의해 중심 섹션과 접속되고; 중심 섹션으로부터 멀리 있는 꽃잎 모서리는 원형이다.  리바는 골을 가지며, 골의 높이는 0.5mm와 1.0mm 사이이고 골 사이의 거리는 5mm와 15mm 사이이다.
Patent KR-20160136377-A (KR)
Inventor: COLJA RENATO
IPC: H02J50/10
Filed: 2015-03-16
Abstract: 디바이스의 연속 무선 충전을 유지시키는 것은 다양한 엘리먼트들을 포함한다.  무선 충전을 중단시킬 수 있는 이벤트들이 검출되고 그러한 중단은 유도 코일의 기능들을 조정함으로써 회피된다.  주파수 및 전력-시프팅 방법론이 연속 무선 충전을 실현하기 위해 채용된다.  본 발명은 차량 콘솔들을 포함하는 다양한 디바이스들 및 환경들에 구현될 수도 있다.
Patent KR-20160138473-A (KR)
Title: 다극구조의 전기 플러그 인 커넥터 부분
Inventor: THURAU VOLKER
IPC: H01R13/436
Filed: 2015-04-01
Abstract: 본 발명은, 커넥터 하우징을 포함하고, 상기 커넥터 하우징에 구속될 수 있고 유입구 개구부를 가진 보호 캡을 포함하며, 다수의 연결 라인들을 위해 적어도 한 개의 클램핑 몸체를 가지는 고정 장치를 포함하는 다극구조의 전기 플러그 인 커넥터 부분에 관한 것이며, 적어도 두 개의 클램핑 표면들이 탄성적으로 유연하거나 탄성적으로 구부러질 수 있게 상기 클램핑 몸체상에 배열되거나 형성되며, 연결 라인들은 클램핑 몸체의 클램핑 표면 및 커넥터 하우징의 내측 벽 섹션사이에서 압력 끼워맞춤에 의해 고정된다. 상기 클램핑 요소는, 특히 탄성 몸체로서 형성되거나 상기 보호 캡위에서 탄성 상태를 가지며 일체 구조로 몰딩된 클램핑 요소 섹션들에 의해 형성된다.
Patent KR-20160138162-A (KR)
Inventor: SCHULDT LIEB SONJA
IPC: A61J1/20
Filed: 2015-03-20
Abstract: 본 발명은 마개(42)의 수단에 의해 폐쇄될 수 있는, 병 목(34)을 가지는 병(20)으로부터 또는 병 내로 매체를 제거 또는 이송하기 위한 이송 기구(10)에 관한 것이며, 이송 기구는 병에 위치될 수 있는 제1 어댑터 부품(12), 및 제1 어댑터 부품과 상호 작용하고, 병의 길이 방향으로 변위될 수 있으며 마개를 천공하기 위한 안내 요소(50)를 가지는 제2 어댑터 부품(14)을 포함한다. 제2 어댑터 부품(14)이 마개(42)의 방향으로 제1 어댑터 부품을 따라서 변위되고 제2 어댑터 부품이 록킹된 후에, 제1 어댑터 부품(12)은 병(20)에 또는 병 주위에 해제 불가능하게 체결된다.
Patent KR-20160147985-A (KR)
Title: 생체 외 성장된 감염성 플라스모디움 종충
Inventor: EAPPEN ABRAHAM G
IPC: C12N1/10
Filed: 2015-05-01
Abstract: 출원은 생식 모세포 단계로부터 종충 단계로의 포자 생식이 모기의 외부에서 일어나는, 인간 숙주 범위의 생체 외-길러진 플라스모디움 종충 및 그것의 제조 방법에 관한 것이다. 본원에는 생식 모세포 단계로부터 종충 단계로의 포자 생식이 모기의 외부에서 일어나는, 인간 숙주 범위의 생체 외-길러진 감염성 플라스모디움 종충 (SPZ), 특히 플라스모디움 팔시파룸, 플라스모디움 비박스, 플라스모디움 오발레, 플라스모디움 말라리아에 및 플라스모디움 노울레시 및 그것들의 제조 방법이 제공된다.
Patent KR-20160145194-A (KR)
Title: 인광성 금속 착화합물, 인광성 금속 착화합물을 포함하는 복사 방출 소자 및 인광성 금속 착화합물의 제조 방법
Inventor: ADLER JURGEN
IPC: H01L51/00
Filed: 2008-05-20
Abstract: 본 발명은 인광성 금속 착화합물에 관한 것으로, 상기 금속 착화합물은 금속 중심 원자(M) 및 상기 금속 중심 원자(M)에 의해 배위된 적어도 하나의 리간드를 포함하고, 이 때 상기 금속 중심 원자(M) 및 리간드는 6원 금속 고리환을 형성한다.  또한, 본 발명은 금속 착화합물을 포함한 복사 방출 소자 및 금속 착화합물의 제조 방법에 관한 것이기도 하다.
Patent KR-20170002591-A (KR)
Inventor: DALSGAARD LARS
IPC: H04W72/00
Filed: 2014-05-09
Abstract: MBSFN 측정을 위한, 컴퓨터 프로그램 제품을 포함하는 방법 및 장치가 제공된다.  일 양상에서, 방법이 제공된다.  이 방법은, 제1 세트의 서브프레임에 대해 수행될 하나 이상의 제1 측정 및 제2 세트의 서브프레임에 대해 수행될 하나 이상의 제2 측정을 나타내는 측정 구성 정보를 사용자 장비에 의해 수신하는 단계 - 제1 세트의 서브프레임은 멀티캐스트 브로드캐스트 모바일 서비스와 연관되고, 제2 세트의 서브프레임은 비-멀티캐스트 브로드캐스트 모바일 서비스와 연관됨 - ; 수신된 상기 측정 구성 정보에 따라 하나 이상의 측정을 수행하는 단계; 및 하나 이상의 제1 측정에 대한 하나 이상의 제1 측정 결과를 하나 이상의 제2 측정에 대한 하나 이상의 제2 측정 결과로 보충하여 보고하는 단계를 포함할 수 있다.  관련 장치, 시스템, 방법, 및 물품 또한 설명된다.
Patent KR-20170008285-A (KR)
Inventor: SEREGIN VADIM
IPC: H04N19/105
Filed: 2015-05-22
Abstract: 일 예에서 비디오 데이터를 프로세싱하는 방법이, 블록들의 제 1 행에 위치되는 비디오 데이터의 제 1 블록에 대한 제 1 팔레트를 결정하는 단계, 코딩된 블록들의 제 1 행에서의 비디오 데이터의 적어도 하나의 제 2 블록의 적어도 하나의 제 2 팔레트를 구축하기 위해 예측자 팔레트를 생성하는 단계, 블록들의 제 2 행에 위치된 비디오 데이터의 제 3 블록의 제 3 팔레트를 결정하기 위해 예측자 팔레트를 재초기화하는 단계를 포함하며, 예측자 팔레트를 재초기화하는 단계는 제 1 팔레트의 하나 이상의 팔레트 엔트리들 또는 제 1 블록을 코딩한 후에 생성된 초기 예측자 팔레트에 기초하여 예측자 팔레트를 재초기화하는 단계, 재초기화된 예측자 팔레트에 기초하여 제 3 블록의 제 3 팔레트를 결정하는 단계, 및 제 3 팔레트를 사용하여 제 3 블록을 코딩하는 단계를 포함한다.
Patent KR-20180079757-A (KR)
Inventor: LEE HYANG WOON
IPC: A61B5/00
Filed: 2017-01-02
Abstract: An embodiment of the present invention provides a method for early detecting seizure brainwave in real time, which comprises the steps of: being provided with previously measured brainwave signals from each of a plurality of measurement areas in a testee; calculating power spectrum density (PSD) for the brainwave signals; analyzing the PSD for the brainwave signals to detect a particular frequency band including a frequency where an isolation width between the reference signal and the seizure signal is widest; extracting features of the PSD of the brainwave signals corresponding to the detected particular frequency band to classify one or more detection areas including valid shapes among the measurement areas; and measuring the one or more detection area of the testee and real-time brainwave signals corresponding to the particular frequency band to determine whether the testee have seizure based on the real-time brainwave signals. The present invention is able to rapidly and accurately detect whether a testee has seizure at an initial time point of seizure.
Patent KR-20180081370-A (KR)
Inventor: JUNG KEUN WOO
IPC: F04B35/06
Filed: 2017-01-06
Abstract: The present invention relates to a chiller. According to an embodiment of the present invention, a compressor driving device comprises: a compressor having a compressor motor and a magnetic bearing; a coil driving unit having a switching element, and applying current to a bearing coil of the magnetic bearing according to a switching operation so as to allow a rotor of the compressor motor to levitate or land from/to the magnetic bearing; a bearing coil current detecting unit for detecting a current applied to the bearing coil; a gap sensor for sensing a gap with respect to the bearing coil; and a control unit for controlling a switching element of the coil driving unit based on the gap information from the gap sensor and the current from the bearing coil current detecting unit, wherein the control unit, when the gap information from the gap sensor or the current from the bearing coil current detecting unit deviates from a reference range, determines the deviation as a failure and controls to output a message for a replacement. Accordingly, the failure diagnosis for the elements inside the compressor in a magnetic floating system is easily performed.
Patent KR-20180085558-A (KR)
Inventor: KWAK TAE WON
IPC: H04W4/02
Filed: 2017-01-19
Abstract: The present invention provides a method for sharing a schedule and an electronic device for supporting the same. According to various embodiments, the present invention is to set a group with users who want to share a schedule and provide various events between the groups. According to various embodiments of the present invention, the electronic device includes: a display including a touch screen; a communication unit communicating with a server, an outer electronic device, and a second outer electronic device; a sensor unit; a processor; and a memory electrically connected to the processor. When the memory is executed, the processor sets schedule information and generates the group sharing the schedule information. The memory requests a group generation approval to outer electronic devices related to the generated group by controlling the communication unit and displays a user interface including the schedule information and user information of the outer electronic devices approving group generation by controlling the display. The memory receives event information from the outer electronic devices by controlling the communication unit and can store commands for indicating the received event information by controlling the display. Also, other embodiments are possible.
Patent KR-20180092640-A (KR)
Title: Lighting lamp
Inventor: LEE DOO SUN
IPC: F21S8/02
Filed: 2017-02-10
Abstract: According to an embodiment of the present invention, a lighting lamp comprises: a case having a concave receiving part, a cover support part around the receiving part, and an outer wall frame part extending from the cover support part; a light source module including a circuit board and a plurality of light emitting diodes in the receiving part; and a diffusion cover coupled to the cover support part and having a curved shape for diffusing light on the light source module. The circuit board and a bottom frame of the receiving part include fixing protrusions and fixing grooves which correspond to each other to be coupled to each other. The cover support part includes a first frame part bent outward from an outer wall of the receiving part and having a plurality of coupling holes, a second frame part bent from the first frame part in a first direction, and a third frame part bent outward from the second frame part and having a stopping projection.The diffusion cover includes an edge part positioned at the stopping projection of the third frame part, a coupling protrusion having a locking projection coupled to the coupling holes of the first frame part, and a stopping rib closely attached to the inside of the second frame part at the outside of the coupling protrusion. The plurality of coupling protrusions and the stopping rib are disposed in a circumferential direction from the center of the receiving part. The bottom frame of the receiving part may be arranged to be spaced apart from a horizontal extending line of the outer wall frame part.
Patent KR-20180107974-A (KR)
Inventor: LEE KEUN WOO
IPC: H01L21/67
Filed: 2017-03-23
Abstract: Disclosed are a substrate support unit capable of uniformly adjusting the temperature of the entire substrate, a substrate polishing system, and a substrate polishing method. Substrate support unit according to an embodiment of the present invention can comprise: a platten; a substrate mounting part on which a substrate is mounted; a temperature adjustment part adjusting the temperature of the mounted substrate; and a temperature measurement part measuring the temperature of the mounted substrate.
Patent KR-20180112183-A (KR)
Title: A lyocell fiber comprising an additive having an amide
Inventor: CHOI JAE SHIN
IPC: D01F2/00
Filed: 2017-03-31
Abstract: The present invention relates to a method for producing a fiber, which is obtained by the following steps: a step in which cellulose is pulverized through moisture management of a pulp sheet; a step in which NMMO and powdered cellulose in an intermediate state between a liquid phase and a solid phase are infinitely swollen in a twin-screw extruder in the presence of additives; and dissolving the mixture at a relatively low temperature within a short time using high shear force of the twin-screw extruder. The additives added during the production of cellulose dope increase the fatigue resistance of cellulose yarn and fibers by changing a cross-sectional shape and a microstructure of the yarn.
Patent KR-20180112375-A (KR)
Title: Method for reply comment solution
Inventor: GANG CHANG U
IPC: G06Q50/00
Filed: 2017-04-03
Abstract: The present invention provides a means for providing comments on a web page on the internet. According to an embodiment of the present invention, a comment solution method that a landing page providing server for providing a landing page operates the comments comprises: a post registering process of registering company or personal posts desired to promotion on the landing page; a comment inputting process of receiving the comments from a member; a comment registering process of registering the comments input by the member as the comments of the post registered in the landing page; and a point giving process of giving points for each number of comments to the member who inputs the comments.
Patent KR-20180116716-A (KR)
Inventor: JUNG WOO YUNG
IPC: G03F7/20
Filed: 2017-04-17
Abstract: The present invention provides an imprint template structure comprising: an imprinted portion in which imprint patterns to be transferred are arranged in a first imprint shot region of a resist layer; and a photomask portion in which light shielding patterns for opening a light transmitting region corresponding to a boundary region for setting a second imprint shot region of the resist layer are disposed, and a pattern forming method using the imprint template.
Patent KR-20180118412-A (KR)
Inventor: SUNG JAE MO
IPC: A23L31/00
Filed: 2017-04-21
Abstract: The present invention relates to a composition comprising an ethyl acetate fraction of Cordyceps militaris as an effective ingredient for preventing or treating liver cancer.
Patent KR-20170122674-A (KR)
Inventor: FENWICK DAVID
IPC: H01L21/205
Filed: 2017-04-26
Abstract: A multi-component coating composition for the surface of a semiconductor process chamber component includes: one or more first film layers of yttrium oxides or yttrium fluorides coated on the surface of the semiconductor process chamber component by using an atomic layer deposition process; and one or more second film layers of additional oxides or additional fluorides coated on the surface of the semiconductor process chamber component by using the atomic layer deposition process. The multi-component coating composition is selected from a group including YOxFy, YAlxOy, YZrxOy, and YZrxAlyOz.
Patent KR-20180121092-A (KR)
Inventor: SEO SIN WON
IPC: A01F12/44
Filed: 2017-04-28
Abstract: A grain sorting apparatus comprises: a lower screening net having a plurality of grain passing holes; an upper screening net having a plurality of grain passing holes communicating with the grain passing holes of the lower screening net and slidably installed on the lower screening net; and a regulator adjusting the size of holes formed by the grain passing holes of the upper screening net and the grain passing holes of the lower screening net by adjusting a relative position of the upper screening net to the lower screening net.
Patent KR-20180123852-A (KR)
Title: Method and Apparatus for Message Service for Vehicle-to-vehicle Communication
Inventor: AHN HONG BEOM
IPC: H04W88/18
Filed: 2017-05-10
Abstract: A method and an apparatus for providing a message service between vehicles are disclosed. According to an aspect of the present invention, the method for providing a message service between vehicles comprises the steps of: subscribing to a message server by using a specific road link as a topic when a vehicle enters the specific road link; receiving an event message from the message server by using the specific road link as the topic; and determining a preceding and following relationship between the vehicle and a transmitting vehicle of the received event message by using the received event message, and determining whether an alarm corresponding to the received event message occurs based on a determination result.
Patent KR-20170057220-A (KR)
Inventor: ZHENG QIANG
IPC: H01M4/133
Filed: 2017-05-16
Abstract: The present invention relates to a lithium-ion battery. The lithium-ion battery of the present invention comprises: a positive electrode plate including a positive electrode thin film formed by coating, drying, compressing, and arranging a positive electrode slurry containing a positive electrode active material, a positive electrode conductive agent, and a positive electrode binder on a positive electrode current collector; a negative electrode plate including a negative electrode thin film formed by coating, drying, compressing, and arranging a negative electrode slurry containing a negative electrode active material, a negative electrode conductive agent, and a negative electrode binder on a negative electrode current collector; a separation film; an electrolyte; and a packaging film. The compression density of the positive electrode thin film is 3.9-4.4 g/cm^3. The compression density of the negative electrode thin film is 1.55-1.8 g/cm^3. A ratio of a capacity of the negative electrode active material to a capacity of the positive electrode active material (CB) is 1-1.4. The lithium-ion battery of the present invention is able to be quickly charged at high rate and has excellent safety performance. Moreover, the lithium-ion battery has excellent cycle performance at the same time.
Patent KR-20180130298-A (KR)
Inventor: PARK NO IL
IPC: H01L29/94
Filed: 2017-05-29
Abstract: An embodiment of the present invention relates to a capacitor. The capacitor includes: a substrate including a plurality of trenches and including a capacitance portion and a margin portion disposed around the capacitance portion; a dielectric layer disposed to fill one side of the substrate and the trenches; a plurality of first electrode layers disposed on one surface of the dielectric layer, and including a first lead portion extended from the capacitance portion to the margin portion; and a plurality of second electrode layers disposed on one surface of the dielectric layer so as to face the first electrode layers with the dielectric layer interposed therebetween, and including a second lead portion extended from the capacitance portion to the margin portion. The first lead portion of the plurality of first electrode layers and the second lead portion of the plurality of second electrode layers are stacked in a stepped shape inclined from the margin portion toward the capacitance portion. The capacity of the capacitor can be significantly improved.
Patent KR-20180131743-A (KR)
Inventor: SONG BYUNG CHEOL
IPC: G06T7/70
Filed: 2017-06-01
Abstract: Provided are a method and apparatus for stereo matching of a wide angle image using SIFT flow. The method of stereo matching of a wide angle image using SIFT flow comprises the steps of: correcting distortion of wide angle stereo images photographed through wide angle stereo cameras disposed perpendicular to each other by using internal and external parameters of the wide angle stereo cameras; composing a characteristic map of the corrected wide angle stereo images by using scale-invariant feature transform flow (SIFT flow) and then using the composed characteristic map to map one wide angle stereo image to another wide angle stereo image; and using Affine Scale-Invariant Feature Transform (ASIFT) for the mapped wide angle stereo images to finally match the wide angle stereo images. The present invention enhances matching performance of wide angle stereo images by using calibration and SIFT flow.
Patent KR-20180135638-A (KR)
Inventor: BAIK SUN HO
IPC: E02F9/20
Filed: 2017-06-13
Abstract: The present invention relates to a traction force control system for a construction machine and a traction force control method using the same, including a traction force mode selection unit provided in an operation chamber and selecting one of a hard mode, a standard mode, and a soft mode depending on work site conditions, a communication control device collecting output shaft speed data during a digging operation; a remote management control device collecting GPS vehicle speed data during the digging operation; and a main control unit setting and storing an appropriate traction force value by using the output shaft speed data and the GPS vehicle speed data and receiving a mode signal from the mode selected by the traction force mode selection unit. When the digging operation is performed at or below the set appropriate traction force value corresponding to the mode signal, the main control unit performs control such that engine output increase and decrease is normally performed for correspondence to a traction force value varying during the digging operation. When the digging operation is performed with the set appropriate traction force value reached, the main control unit performs control such that the engine output no longer increases and a tire slip phenomenon attributable to an excessive traction force does not occur during the digging operation.
Patent KR-20180135723-A (KR)
Inventor: JANG WON
IPC: G01R31/34
Filed: 2017-06-13
Abstract: The present invention relates to a power recovery method for a load bank for a diesel generator output test, and more specifically, to a power recovery method for a load bank for a diesel generator output test which stores thermal energy into power by using a conventional power system, wherein the thermal energy is generated at the time of an output test of a diesel generator to be tested. With an apparatus (system) and a technique for recovering (reproducing) and storing in a storage device (ESS) power supplied from a diesel generator, on which a load test is to be performed, while satisfying diesel generator load test conditions of a conventional load bank type, the power recovery apparatus and method for a load bank for a diesel generator output test have remarkable effects of significantly reducing the costs of a diesel generator load test, obtaining high efficiency at the time of operating a diesel generator output test facility through economical operation, solving various inconveniences and problems of the load bank having a resistance load, ensuring carbon dioxide credits by an amount of power recovered (reproduced), and applying a function of the storage device (ESS) to cause a reduction in a power peak value, thereby reducing standing charge and electric charges and improving the safety and reliability of power facilities.
Patent KR-20180137174-A (KR)
Inventor: KIM KYUNG IL
IPC: A23L33/105
Filed: 2017-06-16
Abstract: The present invention relates to health supplement food comprising dry powder and a mixed solution. The mixed solution includes a Houttuynia cordata extract, a Perilla frutescens extract and a green tea extract. The dry powder includes 1-10 wt% of Houttuynia cordata, 1-10 wt% of Perilla frutescens, 1-10 wt% of green tea, 5-15 wt% of black soybeans, 5-15 wt% of black sesame seeds, 5-15 wt% of corn, 5-15 wt% of adlay, 5-15 wt% of sorghum, 5-15 wt% of mulberry leaves, 5-15 wt% of mulberry fruit, 7-20 qt% of Pleuropterus multiflorus, 5-15 wt% of dandelion, 1-10 wt% of liquorice, 2-15 wt% of kelp, and 5-15wt% of cactus. The mulberry leaves and the mulberry fruit are collected from Morus bombycis. The mulberry leaves and the mulberry fruit are harvested at the same time. The mulberry fruit is harvested at a time when blue, red, and black colors are mixed.
Patent KR-20190002985-A (KR)
Inventor: CHOI DAI KYU
IPC: G01F1/76
Filed: 2017-06-30
Abstract: According to one embodiment of the present invention, a mass flow controlling apparatus using capacitance measurement may comprise: a first capacitor positioned on a moving path of a fluid; a second capacitor spaced apart from the first capacitor and positioned on the moving path of the fluid; a measurement circuit connected to the first and second capacitors and measuring the first and second capacitances of the fluid through the first and second capacitors; and a control unit measuring and controlling the flow rate of the fluid moved on the moving paths of the fluid based on capacitance values measured from the measurement circuit. The mass flow controlling apparatus may accurately measure the flow rate of the fluid flowing using the capacitors.
Patent KR-20190005683-A (KR)
Inventor: LEE CHI HWAN
IPC: H01F27/00
Filed: 2017-07-08
Abstract: The present invention relates to a power supply apparatus for extracting maximum energy from a current transformer for a stable operation of riving power even at a small primary current by deriving maximum electric energy from a current transformer (CT) output current. When securing direct current driving power of specific apparatus at a CT output, a supply maximum energy amount of the deriving power is determined by the primary current amount of the CT. A method of getting the maximum power from an output of the CT is that a fixed duty boost converter is arranged in a post part of a diode bridge and activated at a maximum power point regardless of a load state. A buck converter is added to a fixed duty boost converter output to obtain a stable voltage output. The power supply apparatus for extracting a maximum energy from a current transformer comprises: a diode bridge converting AC to DC; a boost converter; and a buck converter generating a regular voltage source from an output voltage of the boost converter.