baber/WOPTO huggingface dataset:
Patent KR-20120012992-A (KR)
Title: Method of controlling a network computing cluster providing it-services
Inventor: WAHL STEFAN
IPC: H02J3/00
Filed: 2010-06-18
Abstract: The invention concerns a method for controlling a network computing cluster (101) as well as a network computing cluster (101). The network computing cluster (101) comprises one or more network computing stations (21,22,31) and one or more power autarkic network computing stations (11,12,13) supplied by one or more associated local power generators (115). The one or more power autarkic network computing stations (11,12,13) and the one or more local power generators (115) are connected with a local power network (40). In dependence on an amount of locally generated power a control signal is sent to a resource managing unit (31) of the network computing cluster (101) via a communication network (2000) which indicates the ability of the one or more power autarkic network computing stations (11,12,13) to process IT-services. Then, the resource managing unit transfers an IT-service processed by said network computing station to one of the one or more power autarkic network computing stations (11,12,13).
Patent KR-20120036883-A (KR)
Inventor: LALI ARVIND MALLINATH
IPC: C12P19/16
Filed: 2010-05-26
Abstract: 본 발명은 다중효소 다단계 시스템(multi-enzyme multi-step system)을 이용한 바이오매스로부터 발효성 당을 제조하는 방법을 제공한다. 본 발명에 개시된 방법은 보다 적은 시간 동안 높은 수율의 당을 제공한다. 본 발명에서 개시된 다중효소 시스템은 셀룰로스, 헤미셀룰로스 및/또는 이들의 혼합물을 종래기술에서 알려진 방법보다 더 높은 효율 및 더 나은 경제성을 가진 발효성 당으로 전환시킨다. 속도를 향상시키기 위해 리그노셀룰로직 바이오매스(lignocellulosic biomass)와 같은 천연 원료로부터 유래한 셀룰로스 및 헤미셀룰로스 분획은 단축된 시간 동안에 다중효소 시스템의 변형된 효소 조성물/그룹을 이용하여 높은 중간체 전환율로 당화되며 따라서 경제적인 셀룰로스 및 헤미셀룰로스를 당화 방법을 제공한다.
Patent KR-20130080100-A (KR)
Title: 발아 현미 생 식혜제조방법
Inventor: MOON YU HWAN
IPC: A23L7/152
Filed: 2012-01-04
Abstract: 기존의 전통 토속 식혜에 있어 맛도 있고 몸에도 좋은 기호 식품으로 즐겨 먹던 음식 이였으나 이의 건강기능성을 좀더 업그레이드 하여 수요층 확대를 기 하기 위해 현미 식혜를 출시하게 되었다 또다시 발아 현미 식헤를 개발하여 좋은 반응을 얻게되였으나 발아현미는 1차 도정으로 왕겨를 벗길 때에 영양성분의 보고인 배아 씨눈 호분 미강층 과 왕겨피 층의 감마오리지놀 아미노산 염녹소와 아라비 녹신 효소 등 알자성분을 버리게 됨을 피하고 거기에 밥알이나 엿기름 당분 효소를 끓이는 과정에서 살아있는 효소 생물에 손실이 많았었다 그러나 본 기술은 이와같이 버려지는 성분없이 통째로 생으로 숙성시켜 활성화 하여 효과적으로 숙성시켜 최대한의 건강효과를 얻어 국민 건강에 1조 하게 되는 획기적인 건강기능성 식품인 발아 현미 벼 생 식혜 제조 기술
Patent KR-20130081521-A (KR)
Title: Water purifying device of an aquarium
Inventor: SUNG IN SEOK
IPC: C02F1/40
Filed: 2012-01-09
Abstract: PURPOSE: A water purifying device for an aquarium is provided to be stably installed in the water bath of an aquarium regardless of the restriction of a water bath height. CONSTITUTION: A water purifying device for an aquarium comprises a main body (10), an underwater motor (30), a vortex container (40), a purified water sucking pipe (50), and an underwater connecting pipe (20). The main body comprises a water inlet (15), a purified water outlet, and a bubble discharging pipe (16) which discharges impurity containing bubbles. The water inlet of the main body is in connection with a water inlet (32) of the underwater motor. The underwater motor comprises a discharging pipe (34) which discharges the mixture of water and air. The mixture is crashed on the inner wall of the vortex container and generates vortex. Impurities are collected in air bubbles by the vortex. The lower side of the purified water sucking pipe is lower than the discharging position of air bubbles from the vortex container. The underwater connecting pipe comprises one branched pipe (21) and an upper extended part (25). The one branched pipe is in connection with the water inlet of the main body. The upper extended part is upwardly extended from the lateral side of the main body.
Patent KR-20130093817-A (KR)
Inventor: CHOI SANG GI
IPC: G06F21/10
Filed: 2012-01-17
Abstract: 본 출원은 웹 어플리케이션 인증 기술에 관한 것으로, 개시된 기술의 일 실시예에 따른 웹 어플리케이션 인증 관리 방법은 소정의 인증서로 전자 서명된 웹 어플리케이션 설치 데이터를 제공하는 어플리케이션 제공 서버 및 OCSP 인증 서버와 연결 가능한 사용자 단말에서 수행된다. 상기 웹 어플리케이션 인증 관리 방법은 (a) 상기 어플리케이션 제공 서버부터 수신된 웹 어플리케이션 설치 데이터에서 인증서의 식별 정보를 취득하는 단계, (b) 상기 취득된 식별 정보를 기초로 상기 OCSP 인증 서버에 상기 인증서에 대한 상태 정보를 요청하는 단계 및 (c) 상기 OCSP 인증 서버로부터 수신된 상기 상태 정보를 기초로 상기 웹 어플리케이션의 도메인 권한을 할당하여 상기 웹 어플리케이션을 설치하는 단계를 포함한다. 본 출원의 개시된 기술에 따르면, 웹 어플리케이션의 실행 단계에서 OCSP 인증 서버와의 인증 절차를 부가적으로 수행하여 해당 웹 어플리케이션의 인증 정보를 기초로 권한의 정정이 가능하게 함으로써, 설치된 웹 어플리케이션의 권한을 유동적으로 보상할 수 있는 효과가 있다.
Patent KR-20130084838-A (KR)
Title: Multifunction wash gauzes
Inventor: LEE JANG MIN
IPC: D06F1/00
Filed: 2012-01-18
Abstract: PURPOSE: A multi-functional laundry net is provided to be hung on a laundry drying rack with hooks equipped therewith, in a state of spreading out, thereby easily drying washed laundry without need to pull the washed laundry out of the laundry net. CONSTITUTION: A laundry net (10) accommodates washed laundry inside thereof, and is formed as a rectangular net bag. A zipper (20) is provided at a part of a side of the laundry net for enabling selective opening or closing. A plurality of rings (30) having a hook shape is formed at an end of the laundry net for fixing the laundry net at a laundry drying rack.
Patent KR-20130086726-A (KR)
Title: Methods for preparing rg3 or rg2 group ginsenosides and compositions for preventing or treating metabolic diseases
Inventor: CHOUNG JAI JUN
IPC: A61K31/704
Filed: 2012-01-26
Abstract: PURPOSE: A ginsenoside Rg3 group is provided to prevent or treat metabolic diseases, especially obesity, diabetes, and diabetes complications and to show excellent in vivo efficacy. CONSTITUTION: A method for preparing a ginsenoside Rg3 or Rg2 group comprises the steps of: acquiring a ginseng or red ginseng extract; applying adsorption chromatography of the ginseng or red ginseng extract using resin formed of styrene and benzene copolymers and adsorbing ginsenoside in the extract onto the resin; eluting the adsorbed ginsenoside and acquiring protopanaxatriol (PPT)-based ginsenoside and protopanaxadiol (PPD)-based ginsenoside; and performing glycolysis of PPT-based ginsenoside or PPD-based ginsenoside. A composition for preventing, alleviating, or treating metabolic diseases contains 30-55 parts by weight of Rg3, 10-30 parts by weight of Rk1, and 20-40 parts by weight of Rg5 as active ingredients.
Patent KR-20130090116-A (KR)
Title: Construction method of ground hardening pile and construction apparatus thereof
Inventor: YOON NAM SIK
IPC: E02D3/12
Filed: 2012-02-03
Abstract: PURPOSE: A ground hardening column forming method and a device for the same are provided to construct a ground hardening column of a circular section even though an injection rod is rotated in one direction. CONSTITUTION: A ground hardening column forming method includes first and second sensing pieces, a sensing unit, a three-way valve (24), and a valve control unit. The first and second sensing pieces are arranged on an injection rod (11) at an angle corresponding to a central angle. The sensing unit generates sensing signals when the first and second sensing pieces sense. The valve control unit controls the opening/closing operation of the three-way valve when the first sensing piece is sensed by the sensing unit so that a hardening material, water, and compressed air are supplied to the injection rod.
Patent KR-20130091212-A (KR)
Inventor: SONG JANG KUN
IPC: G02F1/1337
Filed: 2012-02-07
Abstract: 본 발명은 멀티 도메인 구현이 쉽고, 광배향과 같은 복잡한 노광 공정이 필요없는 새로운 방식의 액정 표시 장치, 액정 표시 장치 제조 방법을 개시하고 있다. 액정 표시 장치 제조 방법은 액정 표시 장치를 제조하는 방법에 있어서, 액정층에 전기적 신호를 인가할 수 있는 전극을 포함하는 액정 커버 영역을 제공하는 단계; 및 상기 액정 재료와 SAM(Self Assembled Monolayer) 분자들을 혼합한 용액을 상기 액정 커버 영역 내에 주입하여 상기 액정과 접한 기판 또는 캐비티(cavity)의 표면에 상기 SAM 분자들의 화학적 결합을 유도함으로써 액정을 배향시키는 단계를 포함한다. 따라서, 액정을 이용하는 모든 디바이스에 이용이 가능하고, 특히 VA-LCD 기술을 이용하는 TV 제품 등에 활용도가 높으며, 종래 액정 표시 장치 제조 방법에 비해 저렴한 비용으로 복잡한 배향 공정을 대체할 수 있다.
Patent KR-20130091582-A (KR)
Title: A cutting insert having eight main cutting edges and wiper edges and a cutting tool having the same
Inventor: CHEON SUNG KOOK
IPC: B23C5/22
Filed: 2012-02-08
Abstract: PURPOSE: A cutting insert having eight main cutting blades and eight wiper blades and a cutting tool including the same are provided to have eight main cutting blades and eight wiper blades and to form a right angled deep shoulder in a workpiece without the limitation of cutting depth. CONSTITUTION: A double-sided cutting insert (1) having eight main cutting blades and eight wiper blades (24) includes an upper surface (12), a lower surface and four lateral surfaces (16). The lower surface has a 180 degree rotational symmetry shape. Each lateral surface includes a first surface (18) and a second surface (20). The first and second surfaces are inclined about the main cutting blade formed on the first surface towards inside the cutting insert from the upper surface of the wiper blade formed on the second surface. The wiper blade formed on the first surface and the main cutting blade formed on the second surface are inclined to each other so that the wiper blade is inclined about the main cutting blade towards inside the cutting insert from the lower surface of the wiper blade.
Patent KR-20120092066-A (KR)
Title: Encoder, optical module, and servo system
Inventor: YOSHIDA YASUSHI
IPC: G01D5/347
Filed: 2012-02-09
Abstract: PURPOSE: An encoder, an optical module, and a servo system are provided to enhance the straight directivity of illumination lights with respect to a slip array and to obtain fixed intensity and miniaturization by efficiently utilizing a reaching region of reflected lights. CONSTITUTION: An encoder comprises a slit array and an optical module(130). The slit array comprises a plurality of reflected slits being arranged side by side along a first measuring axis. The optical module is moved relatively to the slit array on the first measuring axis while facing to a part of the slit array. The optical module comprises a point light source and a light receiving array. The point light source radiates lights to a part of the slit array. The light receiving array comprises a plurality of light receiving elements. The light receiving elements are radiated from the point light source and receive the lights reflected in the reflected slit. The light receiving elements closer to the point light source in a direction of a second measuring axis among the plurality of light receiving elements are formed into a shape having a length shorter in a traversal direction and an opposite end part of the light receiving element and the point light source are arranged side by side along a second measuring axis of the traversal direction.
Patent KR-20130093220-A (KR)
Title: Power supply circuit for led leading lights
Inventor: JEON YOUNG KIL
IPC: H05B37/02
Filed: 2012-02-14
Abstract: PURPOSE: A power supply circuit for LED leading lights is provided to add a direct current-direct current (DC-DC) converter circuit, thereby implementing the charging of a high voltage. CONSTITUTION: A power input unit (100) is provided in the input terminal of a commercial alternating current (AC) source. A switching mode power supply (SMPS) unit (200') receives a power source from the power input unit. The SMPS unit outputs a stable power to light emitting diode (LED) leading lights. A charge circuit (300') charges a storage battery. A redundant power supply unit (400) supplies a redundant power source to the LED leading lights.
Patent KR-20130095434-A (KR)
Title: Training apparatus for down blow swing of golf
Inventor: KIM IN GEOL
IPC: A63B69/36
Filed: 2012-02-20
Abstract: PURPOSE: Equipment for practicing down-blow swings of golf is provided to bury a sensor under the ground and enable the sensor to detect a golf club passing over the sensor, thereby enabling a practice range to be kept clean. CONSTITUTION: Equipment for practicing down-blow swings of golf is composed of a down-blow detection sensor (4), an alarm device (7), and a control part. The down-blow detection sensor is prepared at the front ground (8) of an artificial turf mat (1), where a golf ball (3) is placed, and detects whether a golf club, which passes over the sensor when swung, passes at a pre-set height. The alarm device notifies a practicing person whether a golf club passes at a pre-set height through the down-blow detection sensor. The control part controls the sensitivity and operation status of the down-blow detection sensor and functions of the alarm device. [Reference numerals] (6) Control unit; (7) Alarm device
Patent KR-20130096401-A (KR)
Title: Apparatus for manufacturing boxes
Inventor: YOON SANG
IPC: B31B45/00
Filed: 2012-02-22
Abstract: PURPOSE: A box manufacturing device is provided to improve the quality of a manufactured box by successively supplying, printing, and cutting unit corrugated cardboards. CONSTITUTION: A box manufacturing device comprises a corrugated cardboard supply part, a corrugated cardboard convey roller set (30,32), a printing roller set (50,52), and a cutting roller set (70,80). The corrugated cardboard supply part load multiple unit corrugated cardboards (10) and forcefully supplies the lowermost corrugated cardboard to the corrugated cardboard convey roller set. The corrugated cardboard convey roller set conveys the supplied corrugated cardboard to the printing roller set. The printing roller set prints specific patterns on the outer surface of the corrugated cardboard. The cutting roller set forms wing boards by pressing and cutting the corrugated cardboard supplied from the printing roller set. [Reference numerals] (94) Controller; (96) Display
Patent KR-20120100746-A (KR)
Title: Oil rotary vacuum pump
Inventor: KATAOKA TADAHIKO
IPC: F04C25/02
Filed: 2012-02-22
Abstract: PURPOSE: An oil rotating vacuum pump is provided to secure the lubrication property in a bearing part without solid lubricant. CONSTITUTION: An oil rotating vacuum pump comprises a main body, cylinder blocks(31, 32), a rotator, a driving part, and a sliding bearing(71). The main body comprises a tank part storing pump oil. The cylinder blocks comprise a pump chamber and a first passage. The first passage is installed for pump oil flowed through the tank part and the pump chamber. The cylinder block is installed in the main body. The rotator comprises a contact portion contacted with the inner surface of the pump chamber. The sliding bearing comprises a second passage connected with the first passage and installed in the cylinder block and supports the rotor to be rotated.
Patent KR-20130101225-A (KR)
Title: An air conditioner with non-defroster
Inventor: AN DONG CHEOL
IPC: F25B30/02
Filed: 2012-03-05
Abstract: PURPOSE: A non-defrosting heating and cooling device combined with a water boiler is provided to supply a defrosting effect as a temperature of refrigerant inputted in an outdoor heat exchanger is increased by using the heat of front and rear end of an indoor heat exchanger, or the heat of a compressor. CONSTITUTION: A non-defrosting heating and cooling device combined with a water boiler comprises a compressor (110), an indoor heat exchanger (120), first and second valves (E1, E2), and an outdoor heat exchanger (150) in which circulate in a forward direction or in a reverse direction through a four way valve (V) and perform the cooling and heating. The refrigerant passed through the outdoor heat exchanger and the first valve is supplied to the outdoor heat exchanger in the heating. A first strainer heat exchanger (130) is installed in a refrigerant line connecting a gap between the indoor heat exchanger and the first valve. The heating and cooling device immediately supplies a part of the refrigerant to a distributor when a first sol valve (S1) is opened, or hot gas to a third strainer heat exchanger (160) connected to the compressor when a second sol valve (S2) is opened. [Reference numerals] (AA) Cooling; (BB) Heating; (CC) Water discharge; (DD) Water inflow
Patent KR-20130102185-A (KR)
Title: Image display device and method of driving the same
Inventor: KIM HUI
IPC: G09G3/36
Filed: 2012-03-07
Abstract: PURPOSE: An image display device and an operating method thereof reduce a common voltage deviation between the upper end and the lower end of a display panel by applying a controlled pulse width of a modulation control signal transmitted to the upper end and the lower end of the display panel. CONSTITUTION: An image display device includes a display panel displaying an image and a timing control part controlling the driving timing of a data driver and a gate driver and generating and transmitting a modulation control signal. The image display device varies the size of ΔVp at a data voltage by controlling the modulation timing of a gate signal of the gate driver by the modulation control signal having different pulse widths and compensates for a common voltage deviation by position of the display panel.
Patent KR-20120039598-A (KR)
Title: Method for providing information of product
Inventor: KIM JAE HYUNG
IPC: G06Q30/06
Filed: 2012-03-12
Abstract: PURPOSE: A product information providing method is provided to recommend sale target products by outputting information for the sale target products. CONSTITUTION: A server(100) includes an information reading unit(105), an information analysis unit(110), an information creating unit(120), and an information extraction unit. The information reading unit reads a breakdown corresponding to the on-off line payment of a client. The information analysis unit deducts member store information and product information by analyzing the breakdown. The information creating unit creates sale target product information corresponding to the member store information and the product information. The information extraction unit extracts the sale target product information.
Patent KR-20120044317-A (KR)
Title: Inserting device of pact for elimination
Inventor: SONG SEE A
IPC: A61F13/20
Filed: 2012-03-15
Abstract: PURPOSE: An apparatus for inserting a discharging pack is provided to eliminate body wastes and to supply nutrient to uterus and the surface of vagina. CONSTITUTION: An apparatus for inserting a discharging pack includes a first discharging pack(10), an inserting member(30), and an inserting tube(40). The first discharging pack includes a discharging material and a soft cover(14). The discharging material is in connection with a string(11) and is filled with a pack composition. The soft cover includes a plurality of holes(13) through which the pack composition is discharged. The inserting member is in the form of a circular rod and receives the first discharging pack. Slits(31) are formed at the front part of the inserting member in order to discharge the first discharging pack. The inserting tube pushes the soft cover of the first discharging pack to be inserted into vagina.
Patent KR-20120112028-A (KR)
Title: Tool changing device and working machine including tool changing device
Inventor: ISHIBASHI NOBUAKI
IPC: B23Q3/157
Filed: 2012-03-15
Abstract: PURPOSE: An automatic tool changer and a machine tool therewith are provided to reduce time required for changing a tool and to accurately control the position of a column. CONSTITUTION: An automatic tool changer(10) comprises a column(28), a spindle head(32), a spindle, multiple grip arms(70), and a magazine body. The column is movably installed on a base(20) of a machine tool. The spindle head is installed on the column. The spindle detachably supports a tool. The grip arms have grip units for gripping the tool. The magazine body is formed in a ring shape surrounding the outer periphery of the column and supports the column to be rotatable around an axial line. [Reference numerals] (AA) Upward; (BB) Z-direction; (CC) X-direction; (DD) Leftward; (EE) Rearward; (FF) Frontward; (GG) Y-direction; (HH) Rightward; (II) Downward
Patent KR-20130105154-A (KR)
Title: Steel sheet for oil sands slurry pipe having excellent erosion resistance and method for manufacturing the same
Inventor: KOH SEONG UNG
IPC: B21B3/00
Filed: 2012-03-16
Abstract: PURPOSE: A steel plate for an oil sand slurry pipe with excellent wear-resistance and a method for manufacturing the same are provided to be produced into a pipe and to have excellent wear resistance in the severe wear environment of an oil sand slurry pipe and ensure the excellent corrosion resistance. CONSTITUTION: A method for manufacturing a steel plate for an oil sand slurry pipe with excellent wear-resistance comprises the following the steps of: heating a steel slab including 0.25 to 0.35 wt% of carbon, 0.1 to 0.5 wt% of silicon, 1.4 to 1.8 wt% of manganese, 0.05 wt% less than of aluminum, 0.03 wt% less than of phosphorus, 0.03 wt% less than of sulfur, 0.01 wt% less than of nitrogen, 0.4 wt% less than of chrome, and the remains of iron and the other unavoidable impurities; finish-hot-rolling the heated steel slab in the temperature range of Ar3 to Ar3+200°C in the reduction ratio of 50% or more; and cooling the heated hot-rolled steel material at the speed of 0.5 to 5 °C/sec. The cooling is started in the temperature range of Ar3 to Ar3+200°C, and is performed below 500°C. [Reference numerals] (AA) Erosion resisting increase
Patent KR-20130110347-A (KR)
Title: Indenophenanthrene derivatives and organic light emitting diodes comprising the derivatives
Inventor: LEE SE JIN
IPC: H01L51/50
Filed: 2012-03-29
Abstract: PURPOSE: An indenophenanthrene derivative makes a device with long lifetime and excellent luminous efficiency and brightness when used in the organic material layer of an organic electroluminescent device. CONSTITUTION: An indenophenanthrene derivative is represented by chemical formula 1. An organic electroluminescent device comprises an anode (20), a cathode (80), and the indenophenanthrene derivative between the anode and the cathode. The indenophenanthrene derivative is included in a light emitting layer (50) between the anode and cathode. The organic electroluminescent device includes one or more layers selected from a hole injection layer (30), a hole transfer layer (40), an electron blocking layer, a hole blocking layer, an electron transfer layer (60), and an electron injection layer (70).
Patent KR-20130110993-A (KR)
Title: An otoscopy apparatus and it using method for middle ear state
Inventor: CHO YANG SUN
IPC: A61B1/227
Filed: 2012-03-30
Abstract: PURPOSE: An otoscopy apparatus and a method for checking the middle ear using the same are provided to improve the accuracy of an examination by obtaining a moving picture about an eardrum in real time. CONSTITUTION: An air blocking member is inserted into an ear canal. An air injecting unit (110) injects air into the ear canal. A part of an image measuring unit (120) is inserted into the air blocking member. The image measuring unit measures the movement image of an eardrum. An information processing unit (160) senses the movement of the eardrum through the movement image of the eardrum. [Reference numerals] (110) Air injecting unit; (120) Image measuring unit; (130) Pressure adjusting unit; (140) Light irradiating unit; (150) Controlling unit; (160) Information processing unit; (AA) Semicircular canals; (BB) Stapes; (CC) Incus; (DD) Eustachian tube; (EE) Tympanic membrane
Patent KR-20130111099-A (KR)
Title: 화상형성장치의 출력화상 편집방법
Inventor: KIM TAE YOUNG
IPC: H04N1/387
Filed: 2012-03-30
Abstract: 본 발명은 화상형성장치의 출력화상 편집방법에 관한 것으로, 더욱 상세하게는 복합기능을 구비한 화상형성장치에 있어서, 화상형성장치에 전원이 인가되어 구동되는 단계와 상기 화상형성장치의 사용자 인터페이스부를 통해 소정의 출력화상을 전송받는 단계와 출력 용지의 화상을 스캔하는 단계와 상기 스캔 화상과 출력 화상을 비교하여 차등부분을 분석하여 확인하는 단계와 상기 차등부분 분석을 실행하여 별도의 차등부분 출력화상을 생성하는 단계와 출력용지에 상기 차등부분 출력화상 데이터를 출력하는 단계를 포함하는 것을 특징으로 하는 화상형성장치의 출력화상 편집방법을 제공함으로써 출력 화상 차등부분을 자동으로 인식하여 차등부분만을 출력함으로써 불필요한 부분에 대한 인쇄를 제거하여 소모품을 절약함은 물론 사용자의 편익을 제공할 수 있다.
Patent KR-20130103263-A (KR)
Title: Dimmable led lighting device
Inventor: LEE DONG WON
IPC: H05B37/02
Filed: 2012-04-04
Abstract: PURPOSE: A dimmable LED device is provided to turn on all LED blocks by attenuating the current quality of a current limit device with a measured phase quantity even though a dimming operation is performed over 50%. CONSTITUTION: A rectifying circuit converts an AC voltage into a DC voltage by rectifying the AC voltage. An LED block is composed of one or more LEDs. A switch block is composed of switches which bypass a current which flows in each LED block. A current limit device limits the current which is supplied to the LED block. A controller controls the switch block and the current limit device. The controller controls the current quantity of the current limit device with a measured phase quantity.