baber/WOPTO huggingface dataset:
Patent KR-20040042690-A (KR)
Title: Device for indicating condition of headlamp in car
Inventor: KWON MUN SUN
IPC: B60Q1/04
Filed: 2002-11-15
Abstract: PURPOSE: A device for displaying states of a headlamp of a vehicle is provided to inform a driver of a lighting state of a low beam by a low beam indication lamp having a different color distinguished from a high beam indication lamp on an instrument panel and accordingly prevent a battery from being discharged when the driver doesn't notice the lighting states of the low beam at day time by connecting wires of the low beam of the headlamp and the low beam indication lamp in parallel. CONSTITUTION: A device for displaying states of a headlamp of a vehicle is composed of a light switch(10) for supplying power to a lighting of the vehicle to operations of a driver; a lighting relay(20) operated when the light switch is in a first stage to supply power to the lighting of an instrument panel or a clearance lamp; a headlamp relay(30) operated when the light switch is in a 2-stage to supply power to the headlamp; a dimmer switch(40) integrally mounted with the light switch to select low and high beams(50,60) of the headlamp; the low beam selected by the dimmer switch and lit up when the light switch is in the 2-stage; a low beam indication lamp(80) mounted to the side of the instrument panel to inform that the low beam is lit up; the high beam selected by the dimmer switch and lit up when the light switch is in the 2-stage; and a high beam indication lamp(70) disposed to the side of the instrument panel to inform that the high beam is lit up.
Patent KR-20030004188-A (KR)
Title: A manufactural method of character doll
Inventor: SEOL YUN HO
IPC: A63H9/00
Filed: 2002-11-20
Abstract: PURPOSE: A method for making a look-alike doll is provided to allow a maker to create a high profit and a consumer to have his or her own doll of various kinds at a low cost. CONSTITUTION: Components for making a basic doll are made using clay and their molds are made using silicone. Upon the completion of the molds, each component is extracted in large quantities by pouring synthetic resin into the molds. Then, the basic doll is assembled using steel joints. It is possible to produce hundreds of basic dolls per day because the hardening time of synthetic resin is two or three minutes. The face of the basic doll is formed and colored and a pre-made cloth is put on the basic doll.
Patent KR-20040046381-A (KR)
Title: Duobinary optical transmitter
Inventor: HWANG SEONG TAEK
IPC: H04B10/50
Filed: 2002-11-27
Abstract: PURPOSE: A duobinary optical transmission device is provided to generate a duobinary optical signal by using a general phase shifter without using an electric low band pass filter, thereby overcoming restrictions on transmission quality and improving non-linear and dispersion characteristics. CONSTITUTION: A duobinary signal generator(100) comprises as follows. A duobinary precoder(110) codes an inputted NRZ(Non Return to Zero) electric signal, and codes a 2-level binary signal, enabling a duobinary transceiving process without changing a receiver. A driving amplifier(120) amplifies the coded binary signal to output the amplified binary signal, and uses the amplified binary signal as a driving signal of a phase shifter(130). The phase shifter(130) shifts a phase of a carrier according to the inputted 2-level binary signal, and controls a phase shift degree. A wideband pass filter(140) removes a signal that is out of a bandwidth, and restricts a bandwidth of the phase-shifted duobinary optical signal.
Patent KR-20040046868-A (KR)
Title: Interface configuration method in multi protocol label switching system based asynchronous transfer mode
Inventor: BAE CHEOL MIN
IPC: H04L12/28
Filed: 2002-11-28
Abstract: PURPOSE: A method for setting an interface in an ATM-based MPLS(Multi Protocol Label Switching) system is provided to dismount forwarding engines of a system performing an LSR(Label Switching Router) role, and to set an interface between a subscriber interface and a system controller, thereby reducing cost of system maintenance and management. CONSTITUTION: If a system operator inputs an interface connection setup command to set an interface(S50), a routing/signaling controller inputs a signal for showing whether a system is mounted from forwarding engines, and decides whether the forwarding engines are mounted on the interface to be set(S51). If so, an interface connection is set between a subscriber interface and the forwarding engines(S52). If the forwarding engines are not mounted on the interface to be set, the interface connection is set between the subscriber interface and the routing/signaling controller(S53).
Patent KR-20040050573-A (KR)
Title: Portable communication terminal having furction of ineracting between files and displaying and a method operating thereof
Inventor: KIM HYO JIN
IPC: H04B1/40
Filed: 2002-12-10
Abstract: PURPOSE: A portable communication terminal having connection and display functions between files is provided to interwork an image file with an audio file that are connected together by using a predetermined method, and to display a link state if the audio file is linked with the image file, thereby setting a desired audio signal in the image file and improving user convenience. CONSTITUTION: An image processor(120) converts an image into an image file, and processes a signal in order to display the image corresponding to the image file. A TSP(Touch Screen Panel) input unit(110) inputs a selection command for setting an audio file linked with the image file. An audio processor(130) converts an audio into the audio file, and processes a signal in order to output the audio corresponding to the audio file. If the image file linked with the audio file is executed, a controller(160) interworks the image with the audio to output the image.
Patent KR-20040056876-A (KR)
Title: Method for combustion of gas-solid two phase fuel in a calcination rotary kiln
Inventor: CHO HAN CHANG
IPC: C04B2/12
Filed: 2002-12-24
Abstract: PURPOSE: A method for firing vapor-phased fuel, cokes oven gas, and solid-phased fuel, cokes powder, in a lime burning kiln is provided to minimize formation of nitrogen oxides(NOx) and loss of energy. CONSTITUTION: The vapor/solid phased fuel in a lime kiln is burned by injecting solid-phased fuel, cokes powder, and air into the center of a burner in a rate of 25-50m/sec, and injecting vapor-phased fuel, cokes oven gas, and air into the sides of a burner in a rate of 10-30m/sec. The cokes powder keeps the temperature inside the kiln homogeneous and the cokes oven gas stabilizes flames. Accordingly, the temperature inside the rotary kiln is controlled by the injection ratio of solid and vapor-phased fuel.
Patent KR-20020019565-A (KR)
IPC: H02K5/128
Filed: 2001-05-23
Abstract: 종래 기술에 따른 고정자는 슬리브에서의 수축 끼워맞춤에 의해 고정된다. 
     본 발명에 따른 장치에서 고정자(1)와 슬리브(5)는 베이어닛 연결(30) 형태의 논포지티브 결합에 의해 서로 고정되도록 형성되어 있다.  상기 장치는 특히, 전기 모터에서 사용하기에 적합하다.
Patent KR-20020025992-A (KR)
Inventor: RUTHERFORD NICOLE
IPC: H01L21/312
Filed: 2000-08-23
Abstract: A surface-coated nanoporous silica dielectric film that is prepared by a process comprising the steps of forming a nanoporous silica dielectric coating on a substrate, and coating the formed nanoporous silica dielectric film with a coating composition comprising a polymer precursor, under conditions effective to form a strength-enhancing and/or hydrophobicity enhancing layer on the treated nanoporous silica dielectric film.
Patent KR-20020026612-A (KR)
IPC: B65D51/20
Filed: 2000-08-22
Abstract: 본 발명은,  애완동물용 식품 캔용 애완동물용 캐리지에 관한 것이다.    패키지는 1이상의 캔 (50) 및 캐리어 (40) 를 포함한다.    각 캔은,  그 캔에 가열밀봉된 유연하고 박리가능한 뚜껑을 구비한다.    뚜껑은 비교적 용이하게 제거된다.    캐리어는 캔의 둘레로 접히는 섬유계 보드이다.    보드는 절단 슬롯을 구비하며,  그 슬롯은 캔의 상단이음매 (58) 를 수용하여 캔을 지탱한다.    캐리어는 캔의 뚜껑을 보호하며 캔을 적소에서 느슨하게 지탱한다.    캔은,  미각 약화를 회피할 수 있도록 한번의 서빙을 위한 크기로 만들어질 수 있으며 별개의 맛을 가진 식품을 수용할 수 있다.
Patent KR-20020073128-A (KR)
IPC: C08J9/00
Filed: 2000-02-22
Abstract: 본 발명은 열경화성 재료가 열가소성 재료의 연속 상 중에 불연속 상을 형성시키는, 열가소성 재료와 열경화성 재료의 혼합물을 포함하는 발포체에 관한 것이다. 또한, 본 발명은 열가소성 매트릭스 중에 미경화 방사능 활성화가능 경화제 및 미경화 열경화성 재료를 포함하는 발포체에 관한 것이다. 또한, 본 발명은 뱃치법 및 연속법에 의해 발포체를 제조하는 방법에 관한 것이다. 또한, 본 발명은 발포체의 특정 용도(예: 플렉소그래피 마운팅 테이프)에 관한 것이다.
Patent KR-20020042691-A (KR)
IPC: A61P3/10
Filed: 2000-09-22
Abstract: 본 발명은 신경병성 동통의 예방 및 치료를 위한 하기 화학식 I의 2-아미노-4-(4-플루오로벤질아미노)-1-에톡시카보닐아미노벤젠 또는 그의 약학적으로 적용가능한 염에 관한 것이다: 
     화학식 I
Patent KR-20020062739-A (KR)
IPC: A61K31/216
Filed: 2000-11-08
Abstract: 혈당 농도를 낮추고, 혈청 트리글리세라이드 농도를 낮추고, 심장 수축성 혈압을 낮추고, 지방 조직에 의한 포도당 흡수를 증가시키되, 지방 조직에 의한 PPAR-γ 발현에 영향을 주지 않는 화합물이 제공된다.
Patent KR-20020081300-A (KR)
IPC: A61F2/06
Filed: 2001-02-09
Abstract: A device is provided for piercing a graft and artery wall in order to retain the graft on the artery. The device has a central section with an abutment surface for contacting the inner wall of the graft and two elongate members with distal ends for contacting the outer wall of the artery when the device is pierced through the graft and artery. The elongate members are biased so as to urge the abutment surface into the graft and retain the graft on the artery.
Patent KR-20020086592-A (KR)
IPC: E21B17/042
Filed: 2001-02-21
Abstract: A percussive drilling component includes a cylindrical male screw thread formed of a steel material. The thread includes thread crests and thread roots interconnected by thread flanks. To protect the thread against corrosion, the thread is coated with a material having a higher electrode potential than the steel material. The coating is situated at least in regions located radially inwardly of the thread flanks. The male screw thread can be attached to a female screw thread of another percussive drilling component, the female screw thread also being coated with the material.
Patent KR-20020086652-A (KR)
IPC: A61B5/145
Filed: 2001-03-01
Abstract: The invention concerns a method and a device for non-invasive measurement of a tissue and in particular of the skin bilirubin level. The inventive device is characterized in that it comprises: a reading head ( 1 ) capable of sending several flashes of various specific wavelengths towards the tissue ( 2 ) to be examined and of receiving and measuring in return the reflected light; a calculator, such as a microprocessor, capable of calculating for each wavelength the amount of reflected light and bring it to a value calculated proportionally to a reference value identical for a predetermined wavelength; and a comparator for comparing the calculated value to a table of reference values.
Patent KR-20030010605-A (KR)
IPC: G06F15/02
Filed: 2001-04-19
Abstract: 강화된 컴퓨터 보조 읽기를 제공하는 시스템 및 방법이 개시되어 있다. 고속 직렬 시각 프리젠테이션(RSVP) 기반 텍스트 파일은 읽는 사람의 감각을 모의 실험하는 하나 이상의 오디오 파일(4) 또는 다른 파일(4)을 특정 텍스트 부분(4)에 링크하는 적어도 하나의 코드 부분(3) 및 텍스트를 갖는 부분을 포함한다. 컴퓨터 기반 읽기 장치가 다음의 부분(2) 및 대응하는 코드 부분(3)을 읽을 때, 오디오 파일(4)이 텍스트 부분(2)의 텍스트의 프리젠테이션과 동시에 검색되어 실행된다. 이러한 방식으로, 읽는 사람에게 강화된 읽기 경험이 제공된다.
Patent KR-20030015246-A (KR)
Title: Supply device for supplying rubber material to a cutting device
IPC: B65H20/06
Filed: 2001-05-17
Abstract: Supply device for supplying rubber material (11) to a cutting device (3). In the direction away from the cutting device the supply device contains a supplying table (3) having a supplying mechanism (4), an unwinding trestle (7) containing a stock of rubber material, a space between the unwinding trestle (7) and the supplying table (3), which space is suitable for taking up a loop of rubber material forming a stock buffer. Between the unwinding trestle (7) and the supplying table (3), preferably at a distance above the supplying table, a first conveyor (5) having a drive is placed. Preferably at a distance above the unwinding trestle a second conveyor (8) having a drive is placed, in which the space for taking up the loop of rubber material is formed between the second (8) and the first (5) conveyor.
Patent KR-20040062332-A (KR)
Inventor: HWANG SEONG TAEK
IPC: H04B10/50
Filed: 2003-01-02
Abstract: PURPOSE: An EML(Electro-absorption Modulator Laser) transmitter applying a band stop filter thereto is provided to improve chirp characteristics and an extinction ratio when transmitting an optical signal by using an EML, thereby realizing high-quality transmission characteristics. CONSTITUTION: An EML(51) optically modulates an electric signal, loads the modulated signal on a transmission light, and transmits the light. A lens(52) converges an optical signal in order to prevent loss of the optical signal outputted from the EML(51). A lens(55) converges the optical signal upon a core part of an optical line(57). An FBG(Fiber Bragg Grating) unit(56) functions as a band stop filter to remove DC components from the optical signal. An optical isolator(53) cuts off the optical signal reversely incoming to the EML(51) by reflection of the FBG(56).
Patent KR-20040065630-A (KR)
Inventor: YOO DONG JUN
IPC: G06F1/26
Filed: 2003-01-15
Abstract: PURPOSE: A device for charging a notebook computer is provided to remove the inconvenience to carry an external adaptor by charging a battery through a USB(Universal Serial Bus) port and use the battery for longer time when the active synchronization, which is a program to transmit data to a desktop computer, is used. CONSTITUTION: An adaptor charger(100) charges the battery(40) by an adaptor charging device(30). A USB charger(200) does not charge the battery if the adaptor charger is installed at the same time, and charges the battery only if the USB charger is solely installed. The USB charger is processed in a low voltage mode and a high voltage mode depending on a USB host.
Patent KR-20030064645-A (KR)
Title: 반도체 집적 회로 장치 및 그 제조 방법
IPC: H01L27/115
Filed: 2003-01-27
Abstract: DRAM 메모리 셀 등에 이용되는 용량 소자의 누설 전류를 저감하여, 반도체 집적 회로 장치의 특성의 향상을 도모한다.  메모리 셀 형성 영역의 정보 전송용 MISFETQs와 플러그(20, 39)를 통하여 접속되는 정보 축적용 용량 소자 C를, 산화 실리콘막(41) 내의 구멍(42) 내에 Ru막으로 이루어지는 하부 전극(43a)을 형성하고, 이 하부 전극(43a) 상에, 산화 탄탈막을 퇴적한 후, 이 막에, 산화성 분위기 중에서, 산소 결함을 수복하는데 충분한 온도 이상으로서, 산화 탄탈막보다 하층의 재료에 영향을 주지 않는 온도에서의 제1 열 처리를 행하고, 또한 불활성 분위기 중에서, 산화 탄탈막이, 완전 결정화되지 않는 온도(650℃ 이하)로서, 그 후의 공정에서 가해지는 온도 이상의 온도에서의 제2 열 처리를 실시한 후, 산화 탄탈막으로 이루어지는 용량 절연막(44b) 상에, Ru막 및 W막의 적층막으로 이루어지는 상부 전극(45c)을 형성함으로써 형성한다.
Patent KR-20040071950-A (KR)
Inventor: KIM GWANG IL
IPC: H01L21/00
Filed: 2003-02-07
Abstract: PURPOSE: A photoresist supply apparatus capable of preventing photoresist flow to a drain line is provided to exhaust air by switching on a photoresist intercepting valve when photoresist is filled in a trap tank, and to prevent the photoresist from being wasted through a drain line by switching off the photoresist intercepting valve after the photoresist is filled. CONSTITUTION: The photoresist is contained in a photoresist bottle. The trap tank receives and stores the photoresist from the photoresist bottle through the first photoresist supply line. Upper and lower photoresist detecting sensors are so installed to detect the photoresist in the trap tank, adjacent to the upper and lower portions of the trap tank. The drain line can exhaust air, connected to an upper side of the trap tank. The photoresist intercepting valve prevents the photoresist from being exhausted through the drain line according to detection of the photoresist of the upper and lower photoresist detecting sensors, installed in the drain line. A photoresist pump(520) can receive the photoresist through the second photoresist supply line and exhaust the photoresist to a wafer, connected to a lower side of the trap tank.
Patent KR-20040071980-A (KR)
Inventor: LEE SANG BAEK
IPC: H04N21/43
Filed: 2003-02-07
Abstract: PURPOSE: A system for confirming broadcasting information of a TV with an off-state is provided to confirm broadcasting program information in a state in which the TV or a set-top box is turned off by displaying currently used broadcasting information or broadcasting time table using an external display module. CONSTITUTION: A receiving unit(200) of a TV or a set-top box receives broadcasting information from the outside. A display unit(220) receives broadcasting information from the receiving unit(200), and displays received broadcasting information. An interface unit(210) connects to the receiving unit(200) and the display unit(220), and has a memory(214) and a microcomputer(212). The memory(214) stores information received from the receiving unit(200). The microcomputer(212) drives the display unit(220).
Patent KR-20040073023-A (KR)
Inventor: OH GYU HWAN
IPC: B60G21/055
Filed: 2003-02-12
Abstract: PURPOSE: A stabilizer bar bush of a vehicle is provided to suppress noise produced between a stabilizer bar and a bush to the utmost through simplified structure. CONSTITUTION: A stabilizer bar bush of a vehicle comprises a body, a pierced support part(130), and a linear contact corrugation part(150). The pierced support part is bored in the body, to cover and support the outer peripheral surface of a stabilizer bar. The linear contact corrugation part is formed to the inner peripheral surface(110c) of the pierced support part. Protrusions(190) are installed to the outer peripheral surface(110a) of the body. An incision part communicating with the bottom surface of the body and the pierced support part is installed to the body.
Patent KR-20030028786-A (KR)
Inventor: JANG YEONG GEUN
IPC: F24H1/38
Filed: 2003-02-14
Abstract: PURPOSE: A complete combustion apparatus for a boiler is provided to pass the combustion gas through a combustion gas passage, an exhaust portion, and upper and lower exhaust pipes in sequence to perform the complete combustion of the fuel. CONSTITUTION: A complete combustion apparatus for a boiler includes a burner and an air supplying unit. A combustion chamber(13) is integrally formed with a combustion gas passage(22) in a circular shape into which the gas from the combustion chamber is induced. A plurality of grooves(20) are formed at the end of the combustion gas passage(22) to discharge the gas introduced into the combustion passage to an exhaust portion(14). Several tens of water pipes(17) are installed at the exhaust portion to connect to the water reservoir. The heated combustion gas is discharged to a space between the water pipes(17) to increase the temperature of the water pipes, and is discharged through upper and lower exhaust pipes(15,21) separated by a partition plate(19).
Patent KR-20030036285-A (KR)
Inventor: RHO BYUNG DAE
IPC: C01B13/10
Filed: 2003-02-17
Abstract: PURPOSE: Provided is an ozone generator having a small size and capable of generating ozone at low cost with high yields, by using plasma generated by using microwave. CONSTITUTION: The ozone generator comprises a molecular exciting apparatus(300) for exciting oxygen molecular in a gas by photochemical reaction, a molecular dissociating apparatus(400) for dissociating molecular in oxygen gas introduced into a resonator to elements, and a molecular combining apparatus(500) for combining excited oxygen molecular from the molecular exciting apparatus(300) and the dissociated oxygen elements from the molecular dissociating apparatus(400) to make ozone.
Patent KR-20050039885-A (KR)
Inventor: AHN EUN JEUNG
IPC: B65D17/34
Filed: 2003-02-17
Abstract: 본 발명은 음료용기(캔)에 충입된 내용물(음료수)을 섭취할 수 있도록 상기 용기의 상면에 형성된 개구부에 할절선으로 고정되는 개폐팁과 상기 개폐팁을 눌러서 개방시킬 수 있도록 일측에 리벳팅되는 탭에 있어서, 특히 외주연이 몰딩 처리된 탭의 상부를 프레스로 가압.성형하여 제 1 및 제 2함몰부를 형성시키되, 상기 제 1 및 제 2함몰부의 경계절곡부의 일측을 일정 길이로 절개하여 그 일측에 걸림돌기를 일체로 돌출시킨 고정리벳부를 형성하고, 상기 걸림돌기의 하부와 겹쳐지도록 걸림단턱이 일체로 된 파지부를 형성한 다음 상기 걸림돌기와 걸림단턱의 경계선상의 양측에 절곡홈이 일체로 형성된 탭을 제공하므로서 상기 파지부의 파손을 최소화하여 제품의 신뢰성 향상 및 개구부의 개방을 신속하게 할 수 있게 하여 내용물의 섭취를 원활하게 할 수 있는 개방이 용이한 음료용기용 탭을 제공하고자 안출된 목적이 있다.
Patent KR-20030023655-A (KR)
Inventor: CHOI JAE SEUNG
IPC: A23L7/10
Filed: 2003-02-17
Abstract: PURPOSE: A method for preparing functional rectangular kimchi rice rolled in dried laver is provided, thereby the rice rolled in dried laver having various healthful effects of herbal medicine materials added can be prepared. CONSTITUTION: The method for preparing functional rectangular kimchi rice rolled in dried laver comprises the steps of: washing rice with water and boiling the rice in an extract solution of green tea, Houttuyniae Herba or Acanthopanacis Cortex to prepare cooked rice; inserting seasonings into the cooked rice and mixing them to prepare seasoned cooked rice; spreading a sheet of dried laver on the bottom of a rectangular box; spreading the seasoned cooked rice on the dried laver; placing a piece of kimchi on the seasoned cooked rice; placing the seasoned cooked rice on the kimchi; placing a sheet of dried laver on the seasoned cooked rice; and pressing the content of the rectangular box.
Patent KR-20040080065-A (KR)
Inventor: KIM SEONG HUN
IPC: H01H9/00
Filed: 2003-03-10
Abstract: PURPOSE: A screen conversion switch apparatus is provided to photograph an object or person at a wide variety of angles by permitting the camera of a terminal for a refrigerator to rotate in a predetermined angle. CONSTITUTION: A screen conversion switch apparatus comprises a rotating shaft inserted into an insertion groove(30) formed at a terminal(40) for a refrigerator(1), such that ends of the rotating shaft are inserted into support grooves formed at both sides of the insertion groove; and a protrusion formed at the rotating shaft such that the protrusion operates a conversion sensor switch by the rotation of a camera and the rotating shaft. Limiters are mounted on the front and rear out walls of the terminal so as to limit the rotating angle of the camera.
Patent KR-20040083166-A (KR)
Inventor: SUNG DONG HYEON
IPC: B01D35/30
Filed: 2003-03-21
Abstract: PURPOSE: A water purification filter container is provided which prevents damage or rupture due to impact, easily enables filter to be replaced and separates and replaces contaminated filter body, that is, filter only so that environment pollutants are easily handled. CONSTITUTION: The water purification filter container comprises an upper cap(210), a lower cap(220) and a pipe body(230), wherein a female screw is formed on the inner circumferential surface of the upper cap and the lower cap, and a male screw is formed on at both ends of the pipe body so that a closed pipe body is formed by connecting the caps and the pipe body, a water inflow port(211) is penetratingly formed at one side of the upper cap, and a valve(212) is formed at the outer side of the inflow port of the upper cap in such a way that the valve is connected to the upper cap by screw, a tube connector(213) is connected to an upper part of the valve, an outflow port(214) is penetratingly formed at the center of the upper cap, a tube connector(215) is connected to the upper cap by screw at an outer part of the outflow port of the upper cap, and a filter insertion pipe(216) communicated with the outflow port is formed on an inner part of the upper cap.
Patent KR-20040092207-A (KR)
Inventor: O CHIK YONG
IPC: A01G1/00
Filed: 2003-04-25
Abstract: PURPOSE: A method of producing Acanthopanax sessiliflorus seedling by planting the fruit of Acanthopanax sessiliflorus in a mixture of earth and soil and then transplanting in cultivated land is provided. It permits effective production of high quality Acanthopanax sessiliflorus seedling. CONSTITUTION: A mixture of earth and sand in a weight ratio of 1:1 to 3 is uniformly spread into a thickness of 2 to 3cm in a seedling pot, the fruit of Acanthopanax sessiliflorus is sprinkled at 0.5cm intervals the mixture and hilled up into a thickness of about 1 to 2cm with the mixture. Then, the seedling pot is stored in a dark well-ventilated place until next spring to give shoots of Acanthopanax sessiliflorus. The shoots are transplanted in cultivated land at regular intervals of 300 to 400 shoots per pyeong(a pyeong equals 3.3058m¬2) of the cultivated land.