baber/WOPTO huggingface dataset:
Patent KR-20060110029-A (KR)
Title: Food recyling and genertor
Inventor: KANG KI CHUL
IPC: B09B3/00
Filed: 2005-04-19
Abstract: A method for recycling waste food and a generator using the same are provided to wash the food by water, to dry the food by means of a freezing dryer and to recycle the food as fodder. When water is filled with a water tank(1) and thereafter a pump(2) is operated, the water is transferred into a food washing device(3) through pipes(13,14). Waste food is inserted into the food washing device and thereafter when the food washing device is operated so that the food is washed through the water introduced through pipes. Thereafter, the food is transferred into a rapid freeze-dryer(5) through a conveyor(4). The water discharged from the food washing device is transferred into a collecting container(6) through a pipe(15).
Patent KR-20060047232-A (KR)
Inventor: HONG SEUNG TAE
IPC: C01F1/00
Filed: 2005-04-19
Abstract: 본 발명은 하기 (a) 내지 (c)의 조건을 만족하는 신규 결정 구조(crystal structure)를 갖는 금속 복합산화물, 즉 (a) 공간군(space group)이 Fd-3m (no.227)에 속하며; (b) 격자 상수(unit cell parameter)가 17.0 ± 1.0Å 범위이며; (c) 격자 내 양이온의 결정학적 위치(crystallographic coordinates)와 그 분율(site occupancy)이 하기의 조건{8b (3/8, 3/8, 3/8) 0 < 분율 ≤ 1; 48f (x, 1/8, 1/8), 0.37 ≤ x ≤ 0.43, 0 < 분율 ≤ 1; 32e (x, x, x), 0.20 ≤ x ≤ 0.26, 0 < 분율 ≤ 1; 16d(1/2, 1/2, 1/2), 0 < 분율 ≤ 1; 16c(0, 0, 0), 0 < 분율 ≤ 1}[여기서, 격자 내 위치 표시는 International tables for crystallography (Vol. A, 5 th  ed. Kluwer Academic Publishers, 2002)의 p.701에 나타낸 space group No. 227, origin choice 2에 기초하였음]을 만족하는 금속 복합 산화물, 상기 금속 복합산화물을 포함하는 이온 전도체 및 상기 이온 전도체를 구비하는 전기 화학 장치를 제공한다. 
     본 발명에 따른 금속 복합 산화물은 격자 내 금속 이온 site 및 금속 이온 결함(defect)의 오더링(ordering)에 의해 도모된 결정학적 특이성으로 인해 용이한 이온 이동이 가능한 채널이 형성됨으로써, 이온 전도체 또는 이온 전도도를 필요로 하는 전기 화학 장치에 유용하게 사용될 수 있다.   
       
     결정 구조, 금속 복합 산화물, 결함, 오더링, 채널, 이온 전도체
Patent KR-20060110552-A (KR)
Title: Multi recycling equipment of waste using exhaust heat and method thereof
Inventor: SUH MOO RYONG
IPC: C10G1/10
Filed: 2005-04-20
Abstract: An apparatus for recycling multi-functional waste with exhaust heat is provided to produce different recycled products such as activated carbon and RPF(refused plastics fuel), plastic resource, etc. and reuse liquid waste as organic solvent by treating the waste including waste wood, synthetic resin, vinyl and the liquid waste with use of exhaust heat from an incinerator of the apparatus. The apparatus comprises: shuttle kiln type of regenerative furnace(1) to burn activated carbon and RPF; a temperature controller using exhaust heat derived from the furnace(1); a carbonizing heat-treatment device(3) to heat treat waste wood and synthetic resin with the exhaust heat from the temperature controller and produce activated carbon and RPF; a melting device(4) to fuse the waste resin and vinyl with the exhaust heat from the controller and produce recycled raw material and RPF; and an evaporation/condensation device(6) to evaporate and/or condense liquid waste with the exhaust heat from the controller and produce recycled liquid useful as solvent.
Patent KR-20060110585-A (KR)
Title: Method for controlling call-back threshold value in a mobile communication terminal for pay-per-view program and mobile communication terminal therefor
Inventor: KIM DO WAN
IPC: H04N7/16
Filed: 2005-04-21
Abstract: A method for controlling a call-back critical value of a mobile communication terminal to watch a PPV(Pay-Per-View) program and a mobile communication terminal therefor are provided to withdraw the viewing restrictions on the PPV program when PPV is not yet processed due to the environment of a mobile communication network. When a call back critical value is compared with a viewing history value, the environment of a mobile communication network is measured(S102). The environmental measurement value is supplied to a smart card. It is determined whether changing the call-back critical value is requested according to the environmental measurement value(S103). If changing the call-back critical value is requested as the determined result, the call-back critical value is increased, and then the increased call-back critical value is stored(S104).
Patent KR-20060047563-A (KR)
Inventor: ROH JAE HO
IPC: H04B7/26
Filed: 2005-04-28
Abstract: 본 발명은 동일한 심벌을 적어도 2회 반복하여 전송하는 멀티 밴드 OFDM 시스템에서 특정 무선자원에서 오류가 발생하더라도 송신단이 전송한 심벌을 수신단에서 오류없이 수신할 수 있는 방안을 제안한다. 이를 위해 본 발명은 적어도 2번 연속하여 전송되는 적어도 3개의 심벌들 중 하나를 선택하고, 상기 선택한 심벌을 상이한 무선자원을 이용하여 연속되지 않게 적어도 2번 전송하는 송신단과 송신단이 전송한 심벌들을 수신하는 수신단으로 구성된 멀티 밴드 직교 주파수 분할 다중 시스템을 제안한다. 
       
     멀티 밴드, OFDM, TFC 번호, 프리앰블, 페이로드, 주파수 다이버시티
Patent KR-20060113013-A (KR)
Title: The conversion method with the mobile image of the pc image which applies angle line tracing and clearing algorithm
Inventor: LIM YOUNG HWAN
IPC: G06Q50/10
Filed: 2005-04-29
Abstract: A method for converting PC images into mobile images with application of an outline tracing/clearing algorithm is provided to clearly extract and process a borderline between background and a character by applying the tracing/clearing algorithm in addition to a reduction algorithm of a GDI(Graphic Device Interface). If software is started, a user selects an image mode(101). The images are loaded to the software by selecting a folder storing the PC images(102). In case of a character image, the background is processed as clear by regarding the first pixel of the character image as background color(103). The tracing algorithm is applied to discriminate a background image and the character image(104). The outside of the discriminated character image is clearly processed by applying the clearing algorithm(105). A result image is output to a screen and stored by selecting a bit-rate of the stored image(106).
Patent KR-20060114497-A (KR)
Title: Acrylic artificial marble having discontinuous circular pattern utilizing press method and process for preparing the same
Inventor: CHOI SANG HUN
IPC: C04B26/06
Filed: 2005-05-02
Abstract: An acrylic artificial marble having discontinuous circular patterns by utilizing a press method and a manufacturing method thereof are provided to adjust the size of a pattern cell unlike a marbling effect of an existing press method and to make the patterns of the artificial marble uniform. The artificial marble manufacturing method comprises the steps of: producing a semi-hardened sheet by molding slurry produced by kneading raw materials for the artificial marble and then semi-hardening the slurry; producing a semi-hardened chip of the predetermined size by cutting the semi-hardened sheet in longitudinal and transverse directions; coating the semi-hardened chip with a resin composition by spraying the resin composition containing a pigment, on the surface of the semi-hardened chip; dispersing a resin pigment composition(10) on the surface of the chip by stirring the semi-hardened chip coated with the pigment in a mixer and processing the chip similarly in a spherical form; producing a plate by inserting chip-type raw materials similar to a spherical form, into a mold and pressurizing and hardening the raw materials by a press; and separating the plate and polishing the surface.
Patent KR-20060114838-A (KR)
Title: System search method using diversity receiver during handoff in multi-mode mobile phone and multi-mode mobile phone implementing the same
Inventor: JANG WOO JIN
IPC: H04B7/26
Filed: 2005-05-03
Abstract: A system search method using a diversity receiver during handoff of a multi-mode terminal and a multi-mode terminal employing the method are provided to reduce the probability that a call is cut off during handoff by allocating two reception paths to each different system. The first and second RF receiving units(140a,140b) communicate with a base station. The first and second system modem units(120a,120b) modulate and demodulate the first and second system signals, respectively. The first and second switch units(130a,130b) selectively connect signals to/from the first and second RF receiving units(140a,140b) to the first or second system modem unit(120a,120b). A controller(110) controls the first and second switch units(130a,130b) to connect signals of the first and second RF receiving units(140a,140b) to the first system modem(120a), and controls the second switch unit(130b) to connect a signal of the second RF receiving unit(140b) to the second system modem unit(120b) when there is a need to search the second system.
Patent KR-20060045946-A (KR)
Inventor: TERRY STEPHEN E
IPC: H04W28/00
Filed: 2005-05-06
Abstract: 향상된 업링크(enhanced uplink, EU) 데이터 전송을 지원하기 위해 무선 송수신 유닛(wireless transmit/receive unit, WTRU)에서 자동 반복 요청(automatic repeat request, ARQ)/하이브리드-자동 반복 요청(hybrid-automatic repeat request, H-ARQ) 프로세스를 할당하는 방법 및 장치가 개시되어 있다.  ARQ/H-ARQ 프로세스와 관련된 파라미터가 구성된 후에, WTRU는 선택된 데이터에 대한 ARQ/H-ARQ를 할당한다.  데이터를 전송한 후에, WTRU는 데이터에 대한 피드백 정보가 수신되었는지 여부를 결정한다.  WTRU는 긍정 응답(acknowledgement, ACK) 메시지가 수신된 경우 ARQ/H-ARQ 프로세스를 릴리스하고, WTRU에서 전송 카운터를 증분시키면서 미리 정해진 기간 내에 부정 응답(non-acknowledgement, NACK)이 수신되거나 피드백 정보가 수신되지 않은 경우 데이터를 재전송한다.  ARQ/H-ARQ 전송 한계에 도달된 경우, WTRU는 데이터를 폐기하거나 전송을 재개시한다.  보다 낮은 우선순위 데이터의 전송을 위해 할당된 ARQ/H-ARQ 프로세스는 이용가능한 ARQ/H-ARQ 프로세스가 없는 경우 보다 높은 우선순위 데이터의 전송을 위해 선점될 수 있다. 
       
     업링크 데이터 전송, 긍정 응답, H-ARQ 프로세스, ACK, NACK
Patent KR-20060116274-A (KR)
Title: Non-coating clay tile manufacturing method
Inventor: LEE GUK HYONG
IPC: C04B33/04
Filed: 2005-05-09
Abstract: A method for manufacturing a non-colored clay roof tile is provided to obtain a roof tile showing a reddish brown or dark brown color and excellent appearance and having improved durability and weather resistance with no need for a separate coloring step. The method for manufacturing a non-colored clay roof tile comprises the steps of: mixing viscous clay, sandy clay and steel-making dust in a weight ratio of 64:16:20, aging the mixture for 2-3 days, removing impurities from the mixture and finely dividing the mixture; adjusting the water content of the finely divided mixture, kneading the mixture, and introducing the mixture into a molding device to mold and dry the mixture; and firing the resultant product in a kiln, cooling the product, and checking and packaging the product.
Patent KR-20060045996-A (KR)
Inventor: TAKAHASHI KENICHI
IPC: C23F1/26
Filed: 2005-05-10
Abstract: 에칭되어서는 안되는 금속 예를 들면, 구리, 주석, 주석 합금 및 알루미늄을 에칭하는 일 없이, 티탄 또는 티탄 합금을 선택적으로 에칭하는 에칭액 및 에칭 방법을 제공한다.  상기 에칭액은 10 ~ 40 중량% 의 과산화수소, 0.05 ~ 5 중량% 의 인산, 0.001 ~ 0.1 중량% 의 포스폰산계 화합물 및 암모니아를 포함하는 수용액으로 이루어진다.
Patent KR-20060117762-A (KR)
Title: Ligament supporting device
Inventor: KIM CHEOL SANG
IPC: A61F2/08
Filed: 2005-05-13
Abstract: A ligament fixing device is provided to reduce the operation time by easily fixing and inserting a ligament or a ligament substitute into a thighbone tunnel and to prevent a slip and damage of the ligament by fixing the ligament by a ligament hook. The ligament fixing device for inserting and fixing a cruciate ligament into a thighbone tunnel is composed of an elastic member(10) with spring power formed at the upper side; bodies(20) inserted and fixed into the thighbone tunnel and separately formed at the lower side of the elastic member with facing each other, to utilize the spring power of the elastic member; a spike member(30) installed at the outside of the body and inserted into the thighbone tunnel to perform a spike function; and a ligament hook(40) formed at one of the bodies facing each other to hang the ligament.
Patent KR-20060118718-A (KR)
Title: Image forming apparatus including paper punching device
Inventor: PARK SEUNG HUN
IPC: G03G15/00
Filed: 2005-05-17
Abstract: An image forming apparatus with a paper punching device is provided to print an image on paper, and simultaneously punch the paper at a high speed and prevent paper remnants generated when the paper is punched from scattering. An image forming apparatus includes a printing unit for printing an image on paper, and a paper punching device for punching the paper. The paper punching device includes a punch roller(400a) and a punch hole roller(400b). The punch roller is located next to a paper-discharging roller of the image forming apparatus and includes a punch(510). The punch hole roller includes a punch hole(520) into which the punch is inserted to punch the paper, a hollow storing paper remnants generated when the paper is punched, and a punch hole opening/closing part pushed by the punch to open the punch hole when the paper is punched. The punch hole opening/closing part closes the punch hole after the paper is punched.
Patent KR-20060118930-A (KR)
Inventor: CHE KYUNG HEE
IPC: G05F1/14
Filed: 2005-05-18
Abstract: A linear AC(Alternating Current) power control device using phase comparison control is provided to supply proper power by using a mutual induction reactor as small as about 1/10 of load power and to supply a favorable average AC voltage by double phase control or linear voltage control. In a linear AC power control device using phase comparison control, a phase comparison controller(1), a voltage varying autotransformer(2), and a voltage decompressing mutual induction reactor(3) are installed at the power input side. The mutual induction reactor is connected to a switch array(7) by installing a multi-stage tap to the autotransformer. Voltage and current comparators(4,5) are mounted at the power output side. A logic controller(6) is installed at each output side of the output voltage comparator and the current comparator and the output side of the phase comparison controller. Therefore, a proper voltage is set at the load side by selectively applying the output voltage of the autotransformer to the mutual induction reactor by operating the switch array by the logic controller.
Patent KR-20060046084-A (KR)
Inventor: YOCOI TOSHINORI
IPC: G06F7/08
Filed: 2005-05-18
Abstract: 본 발명은 입출금기에 관한 것으로서 다수의 금종 대용량의 지폐를 취급하는 운용이나 작은매수의 지폐를 분별하여 취급하는 운용에 대해서 용이하게 대응할 수 있는 사용하기 편리한 지폐입출금기를 제공한다. 사용 용도가 다른 입금고(60) ; 제 1의 분별수납고(61) ; 제 ２의 분별수납고(70) ; 리사이클고(80) ; 장진·회수고(81) 등의 수납고의 외형; 출입구 ; 구동부를 공통으로 구성하고 사용 목적에 따라 선택된 수납고를 지폐입출금기에 장착하는 기술을 제공한다.
Patent KR-20060119060-A (KR)
Title: Excavator
Inventor: KIM YOUNG SOO
IPC: E02F3/40
Filed: 2005-05-18
Abstract: An excavator is provided to prevent safety accident by sprinkling water directly from the excavator to a desired spot, not by a person additionally working near the spot, and accordingly saving the labor force. An excavator(100) comprising an operation room(105) and an arm(101) and capable of mounting a bucket(103) to an end of the arm, further comprises a hose, a nozzle(130), a fixing rack, and plural supporting racks. The hose is extended along the arm. The nozzle is mounted to one end of the hose. The fixing rack is mounted to the end of the arm to fix the nozzle. The supporting racks are mounted to the arm to support the hose. The hose is mounted with a valve. The excavator further comprises a water collection tub(110) connected to the hose. The other end of the hose is provided with a coupler. In addition, a pump is mounted to the hose. The supporting racks are implemented by clips fixed to the arm, surrounding the hose.
Patent KR-20060119585-A (KR)
Title: Flat display device
Inventor: SEO TAE DEOK
IPC: H01J11/20
Filed: 2005-05-20
Abstract: A flat display apparatus is provided to reduce manufacturing process time and cost by using an extrusion molding for manufacturing a frame which supports a plasma display panel and fixes a driving apparatus. A frame(20) is simultaneously extrusion-molded with a supporter bracket(21), a boss(26), and a frame base(29). The frame discharges heat generated upon being driven to the outside and supports a plasma display channel. The frame is made of a same material with the supporter bracket, the boss, and the frame base. The supporter bracket, the boss, and the frame base are simultaneously formed on an upper surface of the frame, so that a manufacture process time is reduced. Further, the frame, the supporter bracket, the boss, and the frame base are integrated so that a separated coupling member is not required.
Patent KR-20060121310-A (KR)
Title: Mobile communication terminal capable of saving power and method for saving power
Inventor: CHOI GA YOUN
IPC: H04B1/40
Filed: 2005-05-24
Abstract: A mobile communication terminal capable of save power, and a power saving method are provided to minimize the power consumption of a battery and to enable the battery to supply the power for each component by intercepting the power supplied for a display unit and the first light emission unit during a call connection attempt. A mobile communication terminal which can save power comprises an external signal forming unit(130), a battery unit(140), a central controller(145) and a display driver(150). The external signal forming unit(130) outputs a power saving mode signal and a phone number signal. The battery unit(140) supplies power for each component. The central controller(145) sets a current mode to a power saving mode if the power saving mode signal is inputted, and outputs the first drive stopping signal if the phone number signal is inputted. The display driver(150) receives the first drive stopping signal, and intercepts the supply of power for a display unit(155).
Patent KR-20060046254-A (KR)
Inventor: HIROTA HISATOSHI
IPC: F04B49/22
Filed: 2005-05-30
Abstract: 본 발명의 과제는 구성이 간단하고 제어성이 좋은 유량 제어식 가변 용량 압축기용 제어 밸브를 제공하는 것이다. 
     토출실로부터 토출된 토출 압력(Pd1)의 냉매를 도입하는 포트(23)와 유량이 제어된 토출 압력(Pd2)의 냉매를 유출시키는 포트(24)와의 사이에 통과하는 냉매의 유량에 따라서 밸브 리프트가 변화하는 메인 밸브(20)와, 그 메인 밸브(20)의 밸브 부재(28)를 가변 밸브 시트로 하고, 그 가변 밸브 시트와 통 형상 밸브 부재(32) 사이에 형성되는 간극의 크기에 따라서 유량 제어되는 압력(Pc)의 냉매를 포트(25)를 거쳐서 크랭크실에 공급하는 솔레노이드 밸브(21)를 구비하고 있다.  메인 밸브(20)가 유량 감지와 솔레노이드 밸브(21)의 밸브 시트를 겸용하고 있고, 솔레노이드 밸브(21)가 크랭크실에 공급하는 작은 유량의 냉매를 제어하는 구성이므로, 구조가 간단하고 안정된 유량 제어가 가능하다.   
       
     제어 밸브, 메인 밸브, 솔레노이드 밸브, 크랭크실, 포트, 플런저
Patent KR-20060048198-A (KR)
Inventor: ORTEGA FRANK
IPC: B23K31/00
Filed: 2005-06-03
Abstract: 하부 챔버(21) 및 용접 개구(30)를 구비하는 하부 하우징(20)은 수중 용접 장소 주위에 고정된다.  하부 하우징은 상부 개구(24)를 포함하며, 하부 하우징은 장착시에 물로 채워진다.  건조 상태에서 용접 유닛(44)을 수납하는 수송 하우징은 하강되어 폐쇄 요소(60)에 의해 폐쇄되는 바닥 개구(61)가 하부 챔버의 상부 개구(24)와 정합한다.  하우징을 서로 클램핑할 때, 하부 챔버는 적어도 부분적으로 배수된다.  다음에, 폐쇄 요소(60)는 개방 위치로 이동되며, 용접 유닛(44)은 손상 영역을 덮도록 패치(66)를 용기 벽에 용접하기 위해 배수된 하부 챔버로 하강된다.
Patent KR-20060127618-A (KR)
Title: Pixel circuit having shared interconnections/transistors in image sensor and driving method thereof
Inventor: CHOI SUNG HO
IPC: H04N5/335
Filed: 2005-06-08
Abstract: A pixel circuit having interconnections/transistors shared in an image sensor and a driving method thereof are provided to interconnect or operate signals/transistors requested in unit pixels through common contacts with neighboring pixels, thereby optimizing the entire interconnection of an APS array. A pixel circuit having interconnections/transistors shared in an image sensor includes a reset transistor(RG) operating according to a reset control signal, and a source-follower transistor(SF) operating according to a signal transmitted to an FD(Floating Diffusion) node. A reset signal based on the signal transmitted to the FD node via the reset transistor and an image signal based on a signal transmitted from a PD(Photodiode) to the FD node are outputted via the source-follower transistor. The reset transistor is connected between a node of the shared first signal(ROV) supplied through the same contact(SH1) as a reset transistor of a neighboring pixel and the FD node. The source-follower is supplied with the shared second signal(SFV) supplied through the same contact(SH2) as a source-follower transistor of another neighboring pixel and outputs a signal proportional to the signal transmitted to the FD node.
Patent KR-20060130964-A (KR)
Title: Core-shell spinel cathode active materials for lithium secondary batteries, lithium secondary batteries using the same and method for preparing thereof
Inventor: SUN YANG KOOK
IPC: H01M10/0525
Filed: 2005-06-14
Abstract: Provided are a positive electrode active material for lithium secondary batteries, which has high packing density and good thermal safety and is superior in life, capacity, and rate characteristics, and a manufacturing method thereof. The positive electrode active material for lithium secondary batteries has a core/shell multi-layered structure. The core portion is formed of Li_(1+a)Mn_(2-a)O_(4-y)A_(y), wherein A is at least one element selected from F or S, 0.04<=a<=0.15, and 0.02<=y<=0.15. The shell portion is formed of Li[Li_(a)(Mn_(1-x)M_(x))_(1-a)]_(2)O_(4-y)A_(y), wherein M is at least one element selected from the group consisting of Fe, Co, Ni, Cu, Cr, V, Ti, and Zn, 0.01<=a<=0.333, 0.01<=x<=0.6, and 0.02<=y<=0.15. The positive electrode active material particles have a particle size of 1-50mum.
Patent KR-20060134645-A (KR)
Title: Signal lines structure of fabric type for smart garment
Inventor: LEE JOO HYEON
IPC: D03D25/00
Filed: 2005-06-23
Abstract: A fabric type signal line structure of a smart garment is provided to form signal lines using conductive fiber materials as signal transmission media for sound signal transmission between a main body and environmental devices, thereby coupling the main body and the environmental devices on the smart garment. A fabric type signal line structure of a smart garment includes a line part(100) formed of conductive fiber materials in a waterproof fabric(110) and having signal lines(120), wherein a first line is for signal transmission and a second line is for ground and the both lines are arranged with a distance from each other. Device coupling elements(210,220) such as conductive snap buttons in the first shape are coupled with the first and second lines and are electrically coupled with a predetermined electric device(300), various media such as a mobile communication terminal or MP3 player, and its environmental unit(400) such as a headphone, an earphone and the like. The device coupling elements are detachably coupled with signal line coupling elements of the electric device and the environmental unit, wherein the signal line coupling elements are conductive and formed in a second shape corresponding to the first shape.
Patent KR-20070000769-A (KR)
Title: Resistor for blower motor
Inventor: LEE KYU HWA
IPC: H01C10/16
Filed: 2005-06-28
Abstract: A resistor for a blower motor is provided to shorten a spot welding process by not conducting a cover member. In a resistor for a blower motor, a resistance unit(110) stacks insulation plates and resistance plates alternately and both sides thereof are connected by a pair of cover members. A connector unit(120) has connection terminals surrounded by the cover member at a lower part and the connection terminals connected to the resistance plates are located erectly at an upper part. A fuse spring(130) is connected to one of the connection terminals to intercept current in case of overload of the blower motor. A fuse cup(140) contacted to the fuse spring(130) by soldering(S), is contacted to the terminal plate by spot welding, and is separated from the fuse spring(130) when melting the soldering part.
Patent KR-20070001473-A (KR)
Title: Loadlock chamber
Inventor: HAM TAE SEOK
IPC: H01L21/68
Filed: 2005-06-29
Abstract: A loadlock chamber is provided to prevent collision of a wafer and a robot arm by using a light emitting device and a light receiving device that are mounted on an inner of a housing. The loadlock chamber includes a housing, a platform(200), a light emitting device(300), and a light receiving device. The light emitting device is formed on a surface of the platform to emit a light to an upper portion as a cassette is placed. Preferably, the light emitting device is formed on left and right sides of a cassette. The light receiving device is formed on an inner wall of the housing to detect the light emitted from the light emitting device. In case the light is not detected by the light receiving device, semiconductor manufacture equipment stops a process and then generates an error signal. Therefore, collision of a wafer and a robot arm is prevented.