baber/WOPTO huggingface dataset:
Patent KR-20000061908-A (KR)
Inventor: LEE KYUNG SOO
IPC: F21V7/00
Filed: 1999-03-31
Abstract: PURPOSE: A reflecting shade for the fluorescent light system is provided to make a reflective efficiency maximum by improving the structure of the reflecting shade(11). CONSTITUTION: A reflecting shade for the fluorescent light system includes a fluorescent lamp(3), a reflecting shade(11), a first specular surface(12), a third specular surface(13), a clamp(16) and a binding ball(17). The slanting third specular surface(13), which reflects the light of the fluorescent lamp(3) outside, is formed in the center of the first specular surface(12) of the reflecting shade(11), namely on the right-angle top, on which the fluorescent lamp(3) lies. The tilt angle of the third specular surface(13) is 130-140 degree. The clamp(16) is combined with the clip type on the both side of the reflecting shade(11) and supports the reflecting shade(11) on the fluorescent lamp(3). A couple of binding ball(17) is made on the both side of the reflecting shade(11). The clamp(16) is fixed on the reflecting shade(11) by inserting the binding ball(17).
Patent KR-19990078450-A (KR)
IPC: G01R31/36
Filed: 1999-03-31
Abstract: 연산 증폭기 등의 오프셋에 대해 불감응한 전류 적산값 검출 장치 및 전류값 검출 장치 및 이들을 이용한 전지팩을 제공한다. 
     전지의 전류 통로에 직렬로 삽입된 전류 검출 저항과, 적분기와, 전류 검출 저항의 양끝의 전위를 적분기의 입력으로 유도하는 입력 상태 셀렉터와, 적분기에 접속한 적분 컨덴서와, 적분기와 상기 적분 컨덴서 사이에 있어서 상기 적분 컨덴서의 접속 극성을 전환하는 적분 컨덴서 반전 수단을 구비한다.  상기 입력 상태 셀렉터는 상태 a와 상태 b의 2상태를 규칙적으로 상호 전환하고, 상태 a에서는 상기 전류 검출 저항의 양끝에 발생하고 있는 전지 전류값에 대응한 전압을 상기 적분기의 입력으로 유도하고, 한편, 상태 b에서는 상기 전류 검출 저항의 양끝에 발생하고 있는 전지 전류 검출 전압을 반전하여 상기 적분기의 입력으로 유도하거나, 또는, 전지 전류값이 제로의 상태를 가상하여, 그 가상 상태에서의 상기 전류 검출 저항의 단자간 전압을 상기 적분기의 입력으로 유도하는 것 중 어느 하나로 한다.  상기 적분 컨덴서 반전 수단은, 상기 입력 상태 셀렉터의 상태 a와 상태 b에 동기하여 상호 반전하고, 상기 적분 컨덴서의 접속 극성을 상호 전환한다.
Patent KR-19990082946-A (KR)
Title: 착색 조성물
Inventor: FURUBAYASHI TOSHIKI
IPC: C09B67/22
Filed: 1999-04-06
Abstract: 본 발명에 따라 (i) 유기 안료, (ii) 결합제 및 (iii) 설포네이트 그룹 및 설폰아미드 그룹이 결합된 유기 안료 또는 이의 염인 안료 유도체를 포함하는, 컬러 필터용 착색 조성물이 제공되고, 이러한 착색 조성물을 사용하여 우수한 도포성을 나타내고 특정의 컬러 불균일함을 갖지 않으며 우수한 콘트라스트를 갖는 컬러 필터가 제조될 수 있다.
Patent KR-20000065526-A (KR)
Inventor: CHANG JONG BOK
IPC: E05F3/20
Filed: 1999-04-06
Abstract: PURPOSE: An adjuster is provided to freely adjust the elastic rebound force of a coil spring by supporting the ball protruded from an upper rotating pipe with a round ratchet groove. CONSTITUTION: An opening unit(21a) of a rotary shaft(21) is installed in an upper rotating pipe(12). The opening unit forms round ratchet grooves(50) on the outer circumference at regular intervals. The upper rotating pipe has a screw hole for a screw pipe(52) and a ball(53) is inserted into the screw pipe by a coil spring. When rotating an upper rotary shaft(21b) in the ratchet groove, the ball goes over the slant of the ratchet groove to wind the coil spring. At that time, a coil spring of the screw pipe is released and the wound coil spring is also released for the free adjustment of the spring.
Patent KR-20000065533-A (KR)
Inventor: PARK YOUNG DONG
IPC: F25D11/00
Filed: 1999-04-06
Abstract: PURPOSE: A water dispenser and a method of manufacturing the same are provided to reduce manufacturing cost by utilizing a common plastic water container for a water dispenser system. CONSTITUTION: A water dispenser comprises a main body unit(10) where water flows into a hot water valve(13) and a cold water valve(14) from a cylindrical water reservoir(12) installed within an outer case(11); a disk-shaped seal plate unit(20) which is made up of flexible material, coupled in water-tight manner to a top of the water reservoir and has a connection opening(21) protruded in a predetermined height at a center of the seal plate unit; a water container unit(30) water-tightly coupled to the seal plate unit; and an automatic water supply unit(40) installed at the other upper portion of the water container unit so as to automatically supply water through a supply hose(44) according to the amount of water in the water container unit. The water container unit has a vent hole(32) at an upper side wall of the container. The connection opening of the seal plate unit has a diameter and a height same as those of an injection port(31) of the water container, so that the injection port is directly inserted into the connection opening.
Patent KR-19990083018-A (KR)
IPC: C30B15/00
Filed: 1999-04-07
Abstract: 본 발명은 초크랄스키 법(Czochralski method)에 의해  종결정을 융액에 접촉시키고, 네킹작업을 수행시키며, 단결정 잉고트(ingot)를 육성시키는 단계를 포함하는 실리콘 단결정 제조 방법에서, 네킹작업중에 취입되는 격자간 산소농도를 1ppma (JEIDA) 이상으로한다. 
     네킹동작이 수행되는 씨딩법(seeding method)에서 무전위 결정제조의 성공율이 향상되는 실리콘 단결정제조방법이 제공된다.
Patent KR-19990088009-A (KR)
Title: 향상된선명도를지닌비디오라인곱셈을위한방법및장치
IPC: H04N5/208
Filed: 1999-04-30
Abstract: 비월비디오신호를 순차주사된 포맷으로 변환하는데 사용되는 디인터레이싱 (de-interlacing)방법은 수직시간필터링을 이용하여 누락라인들을 발생하며, 적절한 필터계수들을 이용하여 소망된 수직주파수응답을 주고, 모든 필드들로부터의 전체 조합된 기여도가 일(unity)이 되는 반면에 각각의 개별 필드로부터의 전체 기여도가 움직임모서리들의 선명도를 증가시키는 감지된 효과를 갖는 높은 시간주파수들을 밀어올리기 위하여 선택되도록 계수들을 추가로 이용한다.  더욱이, 어느 정도의(certain) 원하지 않는 인조잡상을 피하기 위하여, 현재필드의 라인들은 누락라인들을 발생하는데 사용된 것과 비슷한 시간밀어올림특성들을 지닌 수직시간필터를 사용하여 변경된다.
Patent KR-20000074054-A (KR)
Inventor: HWANG HYEOK DONG
IPC: F02D45/00
Filed: 1999-05-18
Abstract: PURPOSE: A crank angle detection apparatus is provided to achieve an improved accuracy of crank angle detection for 6-cylinder engine by arranging 60 crank angle signal slots. CONSTITUTION: An apparatus comprises a distributor(10) mounted to a cam shaft of an engine, and an engine control unit(20). The distributor includes a photo sensor(11) constituted by a photo diode and a photo receiver and which generates pulses by measuring photo signals output through crank angle signal(CAS) slots(13) and cylinder(CYL) slot(14), and a disk(12) where the 60 CAS slots for sensing crank angle and the CYL slots of different length which are arranged to occupy the CAS slots by the corresponding number of cylinders so as to judge the cylinder, are installed. The disk rotates in accordance with the rotation of the cam shaft. The engine control unit detects a crank angle in accordance with the pulses output from the photo sensor installed within the distributor, and detects a cylinder judging signal, and performs an engine control operation such as calculation of engine RPM, control of ignition timing and volume of fuel.
Patent KR-20010001145-A (KR)
Title: Automatic retractable/extendable antenna system
Inventor: JUNG BYEONG RO
IPC: H01Q1/27
Filed: 1999-06-02
Abstract: PURPOSE: An antenna system is provided to allow easy maintenance and miniaturization of a mobile terminal body by closely contacting a rod antenna that can be automatically retracted/extended and a pair of rollers. CONSTITUTION: As a driving motor(10) rotates, a driving roller(20) rotates in the same direction as the driving motor(10). A driven roller(30) opposed to the driving roller(20) rotates in the opposite direction of the driving roller(20). Then, a rod antenna is retracted and extended along the direction of an arrow(3). When an external force is applied to the rod antenna during the retractability/extension, the driving motor(10) can moves along the direction of an arrow(4) to absorb a vibration or a shock. The driving roller(20) and the driven roller(30) can be displaced up and down. The vibration or shock generated to the rollers(20,30) by an external force can be absorbed compressed coil springs(60).
Patent KR-20010001447-A (KR)
Inventor: KIM HYEON SU
IPC: H01L21/31
Filed: 1999-06-04
Abstract: PURPOSE: A method for forming a trench isolation layer of a semiconductor device is provided to prevent stress applied to the interface between the trench isolation layer and a semiconductor substrate. CONSTITUTION: A semiconductor substrate(21) is provided with a pad oxide(23) and the first nitride layer both successively formed thereon. The pad oxide(23) and the first nitride layer are then etched to form respective patterns and thereby to define an isolation region of the substrate(21). The first nitride pattern is used as a mask for etching the substrate(21) to form a trench. Next, a spacer of the second nitride is formed on sidewalls from the trench to the first nitride pattern. Then, an oxide layer is formed and polished, so that an isolation layer is obtained from the oxide layer in the trench. Thereafter, by a simultaneous removal of the first nitride pattern and the second nitride spacer, a gap is formed between the isolation layer and the substrate(21). The gap is filled with an oxide layer(33) formed in the succeeding processes including heat treatment.
Patent KR-20000062104-A (KR)
Title: 환경 친화적 유압유가 들어있는 유압 클램프를 이용한 조선방법
Filed: 1999-06-15
Abstract: 환경 친화적인 유압유가 들어 있는 유압 장치(20)를 사용하여 강으로 된 구성요소(12, 14, 16)를 배치하는 조선방법이 제공된다. 바람직한 유압유는 식물성 기름이나 글리콜계 기름 따위의 비석유계 기름이다. 이들 유압유가 흘러 나오더라도 물만을 사용하거나, 물과 세제 또는 비석유계의 세척제를 사용하여 환경적으로 유해하지 않은 방식으로 이들 기름을 쉽게 제거할 수 있다. 따라서, 조선 산업에서 시간과 비용을 대폭 절감할 수 있다.
Patent KR-20010005094-A (KR)
Inventor: SEO JEONG WON
IPC: G11C7/00
Filed: 1999-06-30
Abstract: PURPOSE: A semiconductor memory device is provided to promptly pre-charge local data buses so that operation speed is improved. CONSTITUTION: A semiconductor memory device comprises a first pre-charger(370), a dummy column decoder(340), a pre-charge signal generator(350) and a second pre-charger(360). The first pre-charger(370) pre-charges local data buses(LIO,/LIO) according to a first pre-charge signal(IOEQ1). The dummy column decoder(340) generates a decoder output signal(DYi) for dummy columns according to some of column addresses(YAi). The pre-charge signal generator(350) generates a second pre-charge signal(IOEQ2) according to output signal from the dummy column decoder(340). The second pre-charger(360) pre-charges local data buses(LIO,/LIO) with the first pre-charger(370) according to the second pre-charge signal(IOEQ2).
Patent KR-20010008543-A (KR)
Inventor: JUN YONG BONG
IPC: C02F1/04
Filed: 1999-07-02
Abstract: PURPOSE: A wastewater evaporating/concentrating apparatus is provided, which is characterized in that solid matter stuck on a surface of tube (8) is separated by a small ball (10), sprayed with returned water, which beat the tube (8), and the solid matter is removed effectively, thereby electric heat capacity in the tube (8) is maintained. CONSTITUTION: The apparatus comprise follow parts of: an evaporation chamber (2) equipped with the tube (8) which performs heat exchange and a screen (9) through which the wastewater and the solid matter pass; a boll separating tank (14) equipped with a separating plate (15) which separates the small ball (10) and the wastewater; a separator (20) which separates the solid matter; a settling tank (31) in which the solid matter is settled and discharged; an induction pipe (11) which induces the small ball from the evaporation chamber, and a return pipe (12) which supplies the small ball into the ball separating tank(14).
Patent KR-20000063109-A (KR)
Inventor: SHIN CHUN WOO
IPC: H01P1/32
Filed: 1999-07-06
Abstract: PURPOSE: A high frequency amplifying circuit having a multi-layer space structure is provided to amplify various frequencies without manufacturing a plurality of packages. CONSTITUTION: A high frequency amplifying circuit comprises a dry diode, a first dielectric passage line, a second dielectric passage line, a third dielectric passage line, and an amplifier. The dry diode is located between two metal plates. The first dielectric passage line is engaged with a circulator, and transfers the wave inputted from an input end to the circulator. The second dielectric passage line is engaged with the circulator, and transfers the signals inputted from the circulator to the dry diode, and transfers the amplified signal to the circulator. The third dielectric passage line is engaged with the circulator, and transfers the amplified signal inputted from the circulator to an outputting section. The amplifier comprises a strip resonator which connects the dry diode to the dielectric passage line.
Patent KR-20000012102-A (KR)
Inventor: MIURA YOSHIMASA
IPC: A61K8/892
Filed: 1999-07-30
Abstract: PURPOSE: An external use composition containing gelatin agent is provided which has like silicon oil to increase viscosity oil component, combine spherical fine particle of organopolysiloxane elastic polymer with excellent oil absorptive. CONSTITUTION: The external use composition contains spherical fine particle of organopolysiloxane elastic polymer. spherical fine particle of organopolysiloxane elastic polymer has 1.0-30 of JIS A hardness, average particle diameter of 0.1-200 micrometer, and content of 0.1-50.0 weight% based on the total weight of external use composition. Also, spherical fine particle of organopolysiloxane elastic polymer has peculiar elasticity, satisfactory skin intimacy of cosmetics and is easily spreaded on skin by combining it in cosmetics.
Patent KR-20010016735-A (KR)
Inventor: KIM JIN HYEONG
IPC: G11B20/02
Filed: 1999-08-03
Abstract: PURPOSE: A CD(compact disk) and a CD player for compressed music are provided to reproduce the CD containing compressed music while using tool unit of ordinary CD player. CONSTITUTION: To reproduce ordinary music data, data read from a head(6) is bypassed to a reproducer(8). To reproduce compressed music data, the data is stored in a buffer(12) for being reproduced into decompressed data by a decoder(16). Then, the data is reproduced in the reproducer. Herein, a specific amount of data is read from the a CD(4) for being stored in the buffer, because the storing speed in the buffer is faster than decoding speed of the compressed music. Therefore, small amount of buffer is used by not requiring to store entire data to be reproduced in the buffer.
Patent KR-20000017058-A (KR)
Inventor: ATOKAWA MASAYUKI
IPC: H04B1/40
Filed: 1999-08-04
Abstract: PURPOSE: An antenna common equipment is provided to be low-priced and small-sized. CONSTITUTION: In the antenna common equipment, a transmission circuit (25) is electrically connected between a transmission terminal (Tx) and an antenna terminal (ANT). A reception circuit (26) is electrically connected between a reception terminal (Rx) and the antenna terminal (ANT). A control circuit (11) which is connected to a voltage controlled terminal (CONT1), is comprised of two transistors (12, 13), three resistors (14, 15, 16) and a conversion switch (18). When the control circuit (11) becomes a high impedance at 0 voltage, PIN diodes (D2, D3) becomes an off state.
Patent KR-20010016848-A (KR)
Inventor: CHO GANG JIN
IPC: C07C69/732
Filed: 1999-08-04
Abstract: PURPOSE: Provided is a process for separating rosmarinic acid from Agastache rugosa in high purity, wherein the rosmarinic acid is used for producing antioxidizing material and used as additives in food or medical supplies. CONSTITUTION: The process comprises the steps of: drying the Agastache rugosa to have a water content of less than 6 wt. and then pulverizing; adding 2-6 times water, based on the weight of the pulverized Agastache rugosa, to obtain the extracted solution of the Agastache rugosa; filtering the extracted solution, performing an adsorption chromatography and then collecting and condensing activated fractions to obtain the concentrated solution of the rosmarinic acid; performing a gel chromatography of the concentrated solution and drying fractions containing the rosmarinic acid.
Patent KR-19990083898-A (KR)
Title: 운동용 방석 완력기
IPC: A63B23/035
Filed: 1999-08-27
Abstract: 본 발명은 자동차의 운전석이나 사무실의 의자에 놓고 깔고앉은 상태에서 아래방향으로 절첩되어 있는 완력기 손잡이(42)를 수평으로 펴서 양측다리무릎과 허벅지사이의 안쪽으로 완력기 손잡이(42)를 위치하여 다리의 완력(腕力)으로 완력기 손잡이(42)를 내측으로 가압하고 해압하여 주는 동작을 하므로서 다리운동을 하는 것으로, 완력기 손잡이(42)가 상·하 절첩식으로 구성되어 평소에 완력기 손잡이(42)는 아래방향으로 절첩되어 있어 방석역활을 하고, 사용자의 선택에 따라 완력기(10)의 강도를 임의로 조절하면서 완력기 손잡이(42)를 내측으로 가압함과 동시에 가압회수가 내부에 설치된 감지센서(60)에 의해 외부에 설치한 디지털로 완력 회수계수기(70)에 나타나 운동량을 알 수 있도록 하고, 완력기 손잡이(42)를 가압하여 줌에 따라 본체(11) 내부에 설치된 공기튜브(50) 내부의 공기가 신체의 국부로 송풍되어 국부건강에 유익하도록 한 것임.
Patent KR-20010027577-A (KR)
Inventor: KIM JEONG WON
IPC: H01L21/027
Filed: 1999-09-14
Abstract: PURPOSE: An apparatus for heating rinse solution is to reduce surface tension of the rinse solution supplied to a wafer to prevent collapse of a photoresist pattern without damage of the photoresist pattern. CONSTITUTION: A wafer(12) is disposed on an upper face of a spin chuck(11), which is rotatably mounted. A microwave generator(13) is disposed at an upper portion of the spin chuck to generate high frequency wave on rinse solution, which is supplied on the wafer, and to heat the rinse solution. In this structure, the wafer is disposed on the upper face of the spin chuck to be attached on the spin chuck by vacuum, and then rotated at a desired rotational speed by the spin chuck. At the same time, the microwave generator generates the high frequency wave on the rotating wafer to heat the rinse on the rotating wafer. That is, the wafer is treated by an exposing and developing process, and then transferred to the spin chuck. Deionized water is supplied on the wafer as the rinse solution.
Patent KR-20010028463-A (KR)
Inventor: AHN JI WHAN
IPC: C01F11/02
Filed: 1999-09-21
Abstract: PURPOSE: A method for manufacturing calcite having remarkably reduced particle size and a uniform distribution of particles with reduced production cost is provided by using an amorphous calcium carbonate synthesized by a carbonating method in ethanol-ethylene glycol system, and adding MgCl2. CONSTITUTION: A manufacturing method for calcite having a size of 0.2-0.6 micrometers in diameter is characterized by comprising the following steps of: producing an amorphous calcium carbonate by reacting the calcium hydroxide suspension which uses a mixture of 90vol% of ethanol and 10vol% of ethylene glycol as a solvent with CO2 gas and crystallizing the resultant calcium carbonate in pure water of 20-80 deg.C at an agitation speed of 100rpm or of 20-60 deg.C at an agitation speed of 500rpm, and in MgCl2 aqueous solution of 0.06 mol per a liter at an agitation speed of 100rpm.
Patent KR-20000000238-A (KR)
Inventor: KIM SAM GIL
IPC: B32B21/04
Filed: 1999-10-05
Abstract: PURPOSE: A structural floor plate material is provided to solve the problem of a floor plate decaying and propagating of bacteria such as mold, to improve the marketability of products with smooth inner and outer surfaces, and to realize an agreeable dwelling space by coating a rough back side. CONSTITUTION: A structural floor plate material having a coating layer on a rear side for waterproof and preventing bending comprises: a rectangular floor plate(1) formed by a veneer board, having a patterned wood on the outer surface, and coated with transparent lacquer; projecting parts(2a), (2b) for fixing at one side and the upper side of the floor plate and grooves(3a), (3b) for fixing at the other side and the lower side for fixing to each other after treating the surfaces of each side; grooves(4) with a certain span on the rear side of the floor plate for easily straightening the bending toward the upper face due to transparent lacquer painting treatment on the outer surface; and a coating layer(5) by paints, synthetic resin, and adhesives for waterproof and preventing bending on the rear side of the floor plate.
Patent KR-20010036990-A (KR)
Title: a tight lock state checking system of a pallet of machine tools
Inventor: KANG YUN CHEOL
IPC: B23Q3/00
Filed: 1999-10-13
Abstract: PURPOSE: A pallet close contact checking device lowers the manufacturing cost thereof by simplifying the structure thereof. CONSTITUTION: The air pressure of an air pressure line(7) lowered by flowing out through between a separated cap(2) and a cone(4) if a pallet(1) is separated from a table(5). Thus, the air pressure is lowered with the passing of the time such that the completement of the ascent of the pallet(1) is detected by the ascent signal of the pallet(1). If, the pallet(1) is closely contacted with the table(5), the air pressure of the air pressure line(7) is increased because the cap(2) of a pallet(1) and the cone(4) of the table(5) is mixed. After some time is passed, the air pressure is increased, thereby detecting if the pallet(1) is completed or not the descent thereof.
Patent KR-20010037475-A (KR)
Inventor: KIM NAM GAK
IPC: H01L21/20
Filed: 1999-10-18
Abstract: PURPOSE: A wafer manufacturing method is provided to improve leakage current features without influence from defects or crystalline states of a semiconductor substrate by growing an epitaxial layer on the semiconductor substrate. CONSTITUTION: Ion of middle energy is injected onto a semiconductor substrate(10). The semiconductor substrate(10) is quick heat treated to activate injected ion. The amorphous surface of the semiconductor substrate(10) is restored and improved of the surface uniformity. A layer(20) having defects is formed to remove metal impurities of the semiconductor substrate(10) which is the reason of current leakage. An epitaxial layer(30) is deposited on the semiconductor substrate(10) to manufacture a wafer having a uniform surface. Manufacturing a semiconductor device on the wafer decreases current leakage to improve properties of the semiconductor device.
Patent KR-20010038459-A (KR)
Inventor: CHOI JONG HYEON
IPC: F04B39/00
Filed: 1999-10-25
Abstract: PURPOSE: A terminal structure for compressor is provided to avoid compressor shutdown by preventing an object from being easily escaped from the terminal. CONSTITUTION: A terminal structure comprises a terminal housing(31) mounted in a closed container of a compressor; and two or more connection terminal units(32) penetrating the terminal housing. The connection terminal unit has a spiral groove(33) formed along the outer periphery of the connection terminal unit, so as to prevent the object coupled to the connection terminal unit from being easily escaped from the connection terminal unit. The spiral groove allows the object to be easily inserted into the connection terminal unit. Thus, compressor shutdown caused by a frequent escape of the object is prevented.
Patent KR-20010038866-A (KR)
Inventor: KANG SEONG GYU
IPC: H04M3/22
Filed: 1999-10-28
Abstract: PURPOSE: An interface control apparatus in a peripheral processor is provided to efficiently use peripheral processor ports, regardless of a duplication method based on a random port allocation method and the type of a hardware unit, by assigning ports according to priority so as to seize hardware units randomly and making each port control a different hardware unit. CONSTITUTION: A peripheral processor backboard(30) is comprised of a common bus interface part(33) and a TD-bus selection part(34). The common bus interface part(33) loads TD-buses sequentially between hardware units(41-44) so as to randomly control each of the hardware units(41-44) corresponding to each of the ports(31A,32A) of peripheral processors. The TD-bus selection part(34) selects a TD-bus so that each port(31A,32A) can control each different hardware unit(41-44) through the common bus interface part(33).
Patent KR-20010045405-A (KR)
Inventor: KANG CHANG MIN
IPC: H05K13/08
Filed: 1999-11-04
Abstract: PURPOSE: A printed circuit board test system is provided to reduce the test time by using a jig having equidistant two dimensional array test pins. CONSTITUTION: The printed circuit board(PCB) test system comprises a jig(400), a PCB test apparatus, a computer system, and an auxiliary memory device. The jig has an insulating plate where equidistant X, Y grids are formed on, test pins(440) installed on the each crossing point of the X, Y grids, an insulating plate(410) for fixing the test pins, another insulating plate(420) connected to each test pin's bottom part, a solid plate(430) for supporting the insulating plate(420). The solid plate is made of metal. The PCB test apparatus receives the effective pin information and net information and performs the test to determine whether the target PCB is fault or normal state and generates the test result. The computer system receives the effective pin information from the user and sends these information to the PCB test apparatus and receives the test results and saves the test results on the memory and saves the test data to an auxiliary memory device.