baber/WOPTO huggingface dataset:
Patent KR-20000050406-A (KR)
Inventor: KIM SEONG IL
IPC: H04N7/15
Filed: 1999-01-08
Abstract: PURPOSE: An apparatus for processing image information packet loss of packet based video conference terminal and a method thereof are provided to compensate the packet loss. CONSTITUTION: An apparatus for processing image information packet loss of packet based video conference terminal includes an image codec(70), an audio codec, an RTP portion(real-time protocol, 100), and a packet processor(210). The image codec(70) codes the image data from an image input/output or decodes the outward data and outputs the result to the image input/output. The audio codec receives the audio data from the audio input/output, codes and outputs the receives result, or decodes the data and generates to the audio input/output. The RTP portion(100) packetize the data of the image codec, audio codec and transmits the result. The RTP portion de-packetize the received data and outputs the result. The packet processor(210) determines whether the image data received is normal or not, and transfers the result to the packet processor(210).
Patent KR-20000051644-A (KR)
Inventor: LEE EUNG SANG
IPC: G02F1/133
Filed: 1999-01-25
Abstract: PURPOSE: A method for improving a visual angel of a bistable twisted nematic liquid crystal display device is provided to equalize visual angles for all visual directions. CONSTITUTION: A method for improving a visual angel of a bistable twisted nematic liquid crystal display device according to the present invention includes a liquid crystal composition and alignment layers(240,440). The liquid crystal composition represents two bistable twisted nematic characteristics according to the waveform of initial alignment angle 180°C. The alignment layers(240,440) for the upper and the lower substrate which space out from the liquid crystal layer between them are rubbed so as to be initially aligned with an angle of 180°C. The direction of rubbing is distributed with different angles for each predetermined region. A region with different rubbing angle is set to be a unit pixel region.
Patent KR-20000051975-A (KR)
Inventor: KIM JAE RYONG
IPC: H04N21/466
Filed: 1999-01-28
Abstract: PURPOSE: A method for displaying channel among television broadcasting channels is provided to store the records as to user's channel selection with the time information to determine a user preference channel. CONSTITUTION: A method for displaying channel among television broadcasting channels includes a first through a fifth steps. At the first step(S1), channels of user preference is studied on time basis and the channel list is stored. At the second step(S3), a password of a particular user is searched when television is turned on or an electronic program guide is requested. At the third step(S5), whole record information or individual record information is loaded based on the searched password. At the forth step(S6), current data and time are checked based on the loaded record information. At the fifth step(S8), a plurality of channels are displayed after determining preferred channel based on the date and time.
Patent KR-19990072613-A (KR)
Title: 내화용실리콘수지복합재및이의제조방법
IPC: C09K21/14
Filed: 1999-02-12
Abstract: 경화된 메틸실세스퀴옥산 수지 매트릭스와 보강재를 포함하는 중합체 매트릭스 복합재를 기재한다.  청구된 복합재는 연소시 발열률과 발연율이 낮고 일산화탄소 생성량이 적다.  복합재는 연소 후 숯 생성량이 높고 초기 인장강도를 거의 같게 유지한다.  당해 복합재의 제조방법은 (CH 3 )SiO 3/2 단위 70 내지 90mole%와 CH 3 Si(OH)O 2/2 단위 10 내지 25mole%를 포함하는 실란올 관능성 메틸실세스퀴옥산 수지를 보강재에 적용한 다음, 수지를 경화시킴을 포함한다.
Patent KR-20000056267-A (KR)
Inventor: MOON CHANG SOO
IPC: A47J27/084
Filed: 1999-02-18
Abstract: PURPOSE: An inverter control circuit is provided, which detects the over current flowing in a switch element of an inverter in an induction heating cooker, and enables to adopt a current detecting resistance having lower resistance value than an existing resistance. CONSTITUTION: An inverter control circuit of an induction heating cooker comprises; a switch actuating part(200) to output the actuating potential of an inverter control circuit according to a prescribed control signal; a switch element to actuate an inverter(100) of the inverter control circuit by inputting the actuating potential output from the switch actuating part; a current detecting resistance to detect the increase of the current input from the switch actuating part; and a control device(300) to generate the control signal for stopping the operation of the switch actuating part, if the increase of the current detected at the current detecting resistance is over a constant level.
Patent KR-20000056353-A (KR)
Inventor: YANG HYEONG CHIL
IPC: E02D3/12
Filed: 1999-02-19
Abstract: PURPOSE: A chemical grouting method is provided to press sealing materials and surrounding soft foundation and enrich to the solid soil. CONSTITUTION: A chemical grouting method comprises the steps of; interposing a casing (2) of a steel pipe in the location for further improvement, such as soft foundation; digging up earthy material from a casing (2) and then removing a casing (2); installing a metal pipe (10) and inserting an injection pipe (11) into a metal pipe (10) for chemical grouting; sealing the lower end of a metal pipe (10) and the lower end of an injection pipe (11) with a grout discharge device (12) pierced a grout discharge hole (14); connecting the lower end of an injection pipe (11) to a grout discharge hole (14), thereby discharging flash-setting or slow-setting grouting material (G) through a grout discharge hole (14) and pressing the surrounding soft foundation.
Patent KR-19990046388-A (KR)
Title: 대나무기름추출장치
IPC: A23D9/00
Filed: 1999-03-05
Abstract: 본 발명은 양질의 대나무 기름을 대량으로 용이하게 추출할 수 있는 대나무 기름 추출 장치에 관한 것이다. 
     이를 위하여 본 발명은, 대나무(50)를 적재할 수 있는 투입구(11)를 하부에 형성한 다수 개의 적재통(10)과, 상기 적재통(10)의 투입구(11) 외주연에 결합되고 깔때기 형상으로 제작되어 내부에는 망(21)이 설치되며 하부로는 배출구(22)가 형성된 뚜껑(20)과, 상기 뚜껑(20)의 하부 경사부(23)가 상부로 안치되고 양측 하부에는 이동롤러(31)가 설치된 지지테(30)와, 상기 지지테(30)에 설치된 이동롤러(31)의 이탈을 방지하는 롤러홈(41)과 상기 뚜껑(20)의 배출구(22)에서 배출되는 대나무 기름(50)이 유입되는 유입로(45) 및 땔감을 때워 적재통(10)에 적재된 대나무(50)에 열을 공급하는 화구(42)를 상부에 부설하여 상기 롤러홈(41)에 지지테(30)가 얹혀지는 테이블(40)과, 상기 지지테(30)와 지지테(30)사이에 연설되어 테이블(40)의 상부에서 상기 지지테(30)와 뚜껑(20) 및 적재통(10)을 순환운동시키는 이송체인(32)과, 상기 테이블(40)의 일부가 노출되면서 테이블(40)을 감싸도록 돔형상으로 형성되어 테이블(40)의 일부가 노출된 입구(61)로는 상기 지지테(30)와 뚜껑(20) 및 적재통(10)이 출입하는 가마(60)로 구성된 것을 특징으로 한다.
Patent KR-19990077677-A (KR)
Title: 데이터 생성방법 및 기록매체
IPC: G06F9/06
Filed: 1999-03-08
Abstract: 비주얼·프로그래밍에 있어서, 편집 대상인 다수의 오브젝트를 집합화한 집합화 오브젝트를 작성함으로써, 편집작업의 효율을 향상시킨다. 
     본 발명은 편집 화면(31)에 그린 다수의 오브젝트(32)를 하나로 정리하여 모아두는 집합화 오브젝트(33)를 표시한다.  편집하는 오브젝트가 같은 위치에서 겹치는 경우에도, 겹치는 오브젝트를 하나씩 작성하고, 집합화 오브젝트(33)에 넣을 수 있다.  또한, 메뉴의 조작 트리에 늘어지는 개별 메뉴의 실체를 집합화 오브젝트(33)에 넣을 수 있다.  집합화 오브젝트(33)는, 조작 메뉴를 가지며, 그 중에 데이터 생성의 유효·무효를 설정하는 조작이 들어 있다.  조금씩 다른 편집이 된 다수의 오브젝트를 집합화 오브젝트(33)에 정리해두고, 다수의 오브젝트를 1개씩 유효하게 함에 따라, 다른 레이아웃의 작성, 비교가 용이하게 된다.
Patent KR-20000060472-A (KR)
Inventor: LEE MIN SU
IPC: H01L21/28
Filed: 1999-03-16
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to improve a contact margin while minimizing or reducing an increase of resistance. CONSTITUTION: A method for manufacturing a semiconductor device having complementary metal oxide semiconductor(CMOS) transistors on a substrate(10), comprises the steps of: defining an active region(30) on the substrate to form an isolation region; and forming a dummy gate pattern layer(25) on the isolation region. In a succeeding process of the method, an aspect size of a contact window in a photoresist flow process is affected by the dummy gate pattern layer.
Patent KR-19990078180-A (KR)
Title: 미세 구조체 제조 방법 및 미세 구조체 제조용 주형
IPC: B29C39/26
Filed: 1999-03-24
Abstract: 본 발명에 따라 미세 구조체를 제조하는데 이용되는 개선된 엘라스토머(elastomer)형 주형이 제공된다.  본 발명에 따른 주형은 제 1 표면 및 제 2 표면을 포함하는데, 제 1 표면은 적어도 하나의 리세스(recess)된 미세 채널을 구비하며, 제 2 표면은 주형을 통해 제 1 표면까지 연장되며 리세스되어 있는 미세 채널과 연결되는 액세스 개구(access opening) 내지 충진 부재를 구비한다.  주형은 리세스된 미세 채널이 기판을 향하도록 기판 상에 놓여져 사용된다.  주형의 액세스 개구는 고화 가능한 액상 재료로 충진된다.  액세스 개구는 미세 채널과 기판 사이에 규정된 공간 내에 액상 재료를 계속적으로 공급한다.  액상 재료가 고화된 후, 주형이 기판으로부터 제거되어 기판 상에 고화된 액상 재료로부터 형성된 미세 구조체를 남긴다.
Patent KR-20000066425-A (KR)
Inventor: KIM SI DEOK
IPC: H04B7/155
Filed: 1999-04-16
Abstract: PURPOSE: A trunk synchronizer between a base station controller and a base station in the mobile communication system is provided to prevent a slip state and to achieve stable transfer operation by fitting the trunk synchronization between a base station controller and a base station with a trunk synchronous clock supplied from the GPS. CONSTITUTION: A base station controller(10) is composed of a synchronization control unit(11), a first LIU(Line Interface Unit)(12) and a second LIU(14). The synchronization control unit(11) transmits a reference clock synchronized with a synchronous clock supplied from a GPS(30). The first LIU(12) comprises a first PLL(Phase Locked Loop)(13) transmitting base station controller data to a base station through trunk No.1 in accordance with the reference clock. The second LIU(14) comprises a second PLL(15) transmitting base station controller data to the base station through trunk No.2 in accordance with the reference clock. The base station is composed of a base station LIU(21) provided with a base station PLL(22) receiving base station controller data transmitted through trunk No.1 or No.2 in accordance with the PLL synchronization of a slave mode.
Patent KR-20000067013-A (KR)
Inventor: BAE SEONG JIN
IPC: G08B25/10
Filed: 1999-04-22
Abstract: PURPOSE: An automatic alarm device is provided to automatically generate alarm sound if a data transmitter is separated from a data receiver by a predetermined distance. CONSTITUTION: An automatic alarm device includes a transmission data generator(10), a transmitter(11), a data receiver(20), a receiving data processor(21), and a signal sound generator(22). The transmission data generator generates a predetermined indication number data every predetermined period. The transmitter is mounted to a specific article with the transmission data generator, modulates an indication number data generate from the transmission data generator, and transmits a data modulation signal through antenna. If the data modulation signal from the transmitter is received from the antenna, the data receiver modulates the data modulation signal, and detects a predetermined indication number data generated by the transmission data generator. The receiving data processor stores a predetermined indication number data from the transmission data generator in a memory, determines whether the indication number data stored in the memory is identical with an indication number data detected on the data receiver. If they are different from each other, or if the indication number data is detected by the data receiver during a predetermined period, the receiving data processor outputs alarm signal. If the alarm signal is input from the receiving data processor, the signal sound generator generates a predetermined alarm sound.
Patent KR-20000067170-A (KR)
Title: Liquid fuel container
Inventor: PARK JIN HA
IPC: F17C1/00
Filed: 1999-04-24
Abstract: PURPOSE: A liquid fuel container is provided to use a fuel container without regard to the position. CONSTITUTION: With the pressurization on a stem(150), a rubber ring shutting an outlet hole is turned over and a force equalizing the atmospheric pressure inside and outside of a tank(110) is generated. The force lets the liquid fuel(L) absorbed in a filter flow out via a gap between a protrusion and an insertion hole into a first support member. Herein, the liquid fuel is converted to fuel gas(G). The fuel gas is sprayed out via the outlet hole and a spray port. The spray of the gas fuel is performed the same even if a container(100) is used by lying down or standing up.
Patent KR-20000072919-A (KR)
Inventor: LEE BONG JAE
IPC: H01L21/22
Filed: 1999-05-03
Abstract: PURPOSE: A method for forming a twin well is provided which can reduce the size of a device by suppressing the overlapping of a first well and a second well, and also can prevent the generation of a step on the surface of the first well and the second well of a semiconductor substrate. CONSTITUTION: A method for forming a twin well comprises the processes of: forming a first mask layer with a first material on a part of a semiconductor substrate(31)and forming a first side wall with a second material with different etch ratio on a side wall of the first mask layer; forming a first ion implantation region(39)by implanting N-type impurity ion on a revealed part of the semiconductor substrate using the first mask and the first side wall as a mask; removing the side wall selectively and forming a second mask layer(41) with the first material to be self-aligned with the first mask layer on the revealed part of the semiconductor substrate; removing the first mask layer selectively and forming a second side wall(43)with the second material on a side wall of the second mask layer; forming a second well on the semiconductor substrate by implanting P-type impurity ion using the second mask layer and the second side wall as a mask; and forming a first well and the second well by removing the second side wall and the second mask layer and diffusing the impurity ion in the first and second ion implantation region(45). therefore, because the first well and the second well are not overlapped, the size of a device is reduced, and a step is not generated on the surface of the first and second well.
Patent KR-19990088179-A (KR)
Title: 전자빔리쏘그래픽시스템
IPC: H01J37/317
Filed: 1999-05-11
Abstract: 개시된 것은 고도로 정밀하게 웨이퍼를 노출할 수 있는 저가의 다중 칼럼 전자빔 리쏘그래픽(lithography) 시스템이다. 다중 칼럼 전자빔 리쏘그래픽 시스템은 복수의 칼럼과 하나의 제어 유닛을 포함한다. 복수의 칼럼은 전자빔 발생기, 상기 전자빔 발생기에 의해 생성된 전자빔을 편향하기 위한 전자빔 편향 수단 및 샘플이 이동을 위해 놓이는 스테이지를 포함한다. 제어 유닛은 복수의 칼럼을 제어한다. 제어 유닛은 상기 복수의 칼럼에 의해 실행되는 동일한 공통 공정을 제어하기 위한 공통 프로세서와, 상기 칼럼에 독자적으로 공정을 제어하기 위한 복수의 프로세서를 포함한다. 복수의 프로세서 각각은 연합된 칼럼이 공통 공정을 시행할 때 발생하는 시간 지연을 조정하도록 제어해서, 복수의 칼럼이 상호 동기되게 공통 공정을 실행할 수 있게 한다. 더욱이, 복수의 칼럼은 시스템의 중심축에 대해 대칭되게 배치된다.
Patent KR-20000073766-A (KR)
Inventor: LEE IN HO
IPC: H01L21/68
Filed: 1999-05-14
Abstract: PURPOSE: An apparatus for aligning a wafer is to provide a precise alignment and to have an operator inspecting an alignment state, by aligning a notch of the wafer by using a camera. CONSTITUTION: An apparatus for aligning a wafer comprises a recognition unit, a display unit and an OF(orientation flat) table. The recognition unit recognizes a notch(10') of the wafer. The display unit displays an overall image(2') of the wafer recognized from the recognition unit. The OF table compares the recognized overall image with a reference image(40), and shifts the wafer by the comparison result.
Patent KR-19990064871-A (KR)
Title: 운모석 황토벽돌과 그를 이용한 벽돌 및 바닥재
IPC: C04B14/10
Filed: 1999-05-17
Abstract: 본 발명은 운모석 황토벽돌에 관한 것이다.   상세히 설명하면 국내는 물론 이미 일본에서도 호평을 받고있는 청양 삼성광산에서 생산한 . 청양운모석, 황토 및 백시멘트를 3 : 6 : 1 로 혼합하고 스팀으로 1 ∼ 2시간 가열하여  제조되며  인공화학성분을 전혀  첨가하지  않은 청양운모석과 황토흙, 백시멘트를 사용한 것으로서, 원적외선 방사율이 강하여, 기가 옥보다 세며, 탈취, 향균성이 우수하고, 벌레의 서식이 없으며, 열전도, 내구성이 강하고, 습도 및 온도조절기능이 월등한 효과가 있는 운모석 황토벽돌에 관한 것이다
Patent KR-20010001680-A (KR)
Inventor: YANG HYO SIK
IPC: E04B1/32
Filed: 1999-06-07
Abstract: PURPOSE: A dome structure and a constructing method thereof are provided to be cost-effective and for efficient maintenance with antibiotic effect and remote infrared. CONSTITUTION: To construct a dome structure, an anchor groove(2) is formed the inner edge of a bottom(1) and a steel reinforcing anchor(3) is buried in the anchor groove. An air foam made from special materials not to leak air without even one fine pore is fixed around the bottom. In the sealing state, air is filled inside to expand an air dome. The air foam is coated with an adhesive intimated with inorganic materials and a shotcrete is poured on the air foam. Then, steel reinforcing hangers(10) are bonded on the shotcrete in spots to form a solid layer(9) with a second shotcrete. The end of the steel reinforcing anchor is connected to the steel reinforcing hanger with a horizontal steel reinforcing. The surface of the solid surface is bonded with a net hanger and an insulating layer is mounted on the surface two times to form an insulating layer(12). After that, yellow soil is covered on the surface to be an outer wall and the air foam is removed to be a dome structure without pillars.
Patent KR-19990073162-A (KR)
Title: 열분해반응기의열전도향상을위한열분포장치
IPC: B01J19/20
Filed: 1999-06-09
Abstract: 본 발명은 열분해 반응기(출원변호 20-1998-0015672)와 관련된 기술로서, 열분해 물질(고분자 유기화합물)의 열전도성이 매우 낮아 이를 용융하여 열분해 온도(300℃∼700℃)까지 분해물질의 온도를 상승시키기가 매우 어려웠다. 이를 위하여 관상형 반응기(tubular reactor)가 개발되고 내부에 장착된 스크류(screw)가 회전하여 분해물질이 골고루 열을 받아 목적하는 온도를 유도하는 기술이 필요하였다. 
     본 발명은 열분해 반응기 외부에 부착된 핀(날개)를 이용하여 열의 흐름을 효율적으로 설계하고 날개 밖으로 흐르는 열량을 세라믹 차단벽으로 막아주는 동시에 세라믹의 복사열을 이용하여 에너지활용을 극대화를 꾀한 열효율 증대기술이다.
Patent KR-20010002757-A (KR)
Inventor: JUNG HAE WON
IPC: H04L12/28
Filed: 1999-06-17
Abstract: PURPOSE: A device for assigning a mobile terminal and a service identifier is provided to allocate MAC address of 1 byte to a mobile terminal in a base station when initializing a the mobile terminal and to recollect the allocated MAC address and allocate the address to other mobile terminal when the mobile terminal is out of service areas. Therefore, the efficiency of mobile channel is improved when transmitting ATM cell signals through the wireless channel in a wireless ATM LAN system. CONSTITUTION: A wireless receiver(30) and a wireless transmitter(40) transceive a data transceiving signal through a wireless channel. A media access control(MAC) address (MT_A) region requesting information receiver(50) receives a signal from the wireless receiver(30) to store MT_A region assigning requesting information, and outputs an identification(MT_ID) information signal of a self fixed byte, then generates a driving signal(ST_A) to drive an address generator. The address generator(110) receives the driving signal(ST_A), and outputs an address(A) of a corresponding region, a MT_A region and an identification(MT_ID) address signal of a self fixed byte to read a mapping memory. A MT_ID comparator(60) compares a MT_ID signal of a self output fixed byte of the MT_A region requesting information receiver(50) with a MT_ID signal of the mapping memory, and decides whether the same MT_ID is stored in the mapping table memory. A MT_A region storage(70) stores a MT_A value when an inputted signal(A) from the MT_ID is low, and stores a corresponding MT_A value regardless of the inputted signal(A) when an outputted signal(Sig-A) from the MT_ID is high, then outputs an address value(Sig-B) that a corresponding MT_A exists. A virtual path identifier(VPI) requester(80) transmits MT_ID information and MT_A information to an asynchronous transfer mode(ATM) switch. A VPI receiver(90) receives VPI information from the ATM switch to output a VPI value, and generate a driving signal(ST_B) for driving the memory address generator(110) to reach a high state, then makes the outputted signal of the memory address generator display an address of a corresponding MT_A. The wireless transmitter(40) stores the MT_ID information and the VPI information in the mapping memory table, and transmits the MT_ID and the MT_A information transmitted to a MT_A region transmitter, to a mobile terminal requesting a MT_A assignment.
Patent KR-20010003958-A (KR)
Title: Sound Absorbing Material and its Preparing Method
Inventor: LEE YEONG JE
IPC: C04B20/10
Filed: 1999-06-26
Abstract: PURPOSE: Provided are an absorber which has excellent adsorbability, electric insulation capacity, weather resistance and impact resistance, and manufacture is simply with low cost. CONSTITUTION: The absorber is obtained by a process contains the steps of: i) filling the void of a wood chip being size of 0.2-2cm treated with aluminium sulfate aqueous solution; ii) making the wood chip from a stable mass being inert chemically by treating calcium silicate aqueous solution; and then iii) mixing 100pts.wt. of the wood chip with 50-150pts.wt of concrete and hardening the mixture.
Patent KR-20010004351-A (KR)
Inventor: KYE HUN U
IPC: G11C29/00
Filed: 1999-06-28
Abstract: PURPOSE: A ferro-electric memory device is provided to measure a hysteresis characteristic of a ferro-electric capacitor. CONSTITUTION: A ferro-electric memory device includes a mode selection pad(210), an input voltage pad(220), a switching part(230), an integrator(240), a linear capacitor(C3), a source follower(250) and an output voltage pad(260). A mode selection signal of high state is inputted to the mode selection pad(210) to measure a hysteresis characteristic of a ferro-electric capacitor. A triangular waveform voltage(Vin) is inputted to the input voltage pad(220). The switching part(230) whose one side is connected to a positive data-line bus(db0) performs a switching operation according to the mode selection signal from the mode selection pad(210). A negative input terminal(-) of the integrator(240) is connected to the other side of the switching part(230). A positive input terminal(+) of the integrator(240) is connected to a ground terminal. The linear capacitor(C3) is connected between the negative input terminal(-) and an output terminal of the integrator(240). A positive input terminal(+) of the source follower(250) is connected to the output terminal of the integrator(240). A negative input terminal(-) and an output terminal of the source follower(250) are connected together. The output voltage pad(260) is connected to the output terminal of the source follower(250).
Patent KR-20010004867-A (KR)
Inventor: PARK SANG DON
IPC: H04M15/00
Filed: 1999-06-30
Abstract: PURPOSE: An apparatus for storing charging data of an exchange is provided to make an access switching subsystem(ASS) store the charging data in a self buffer, when a central control subsystem(CCS) does not record the charging data or a failure is generated in the CCS, and to retransmit the stored charging data to the CCS when the CCS is normally restored, so that the CCS can store the charging data in a self charging storage. CONSTITUTION: A call processor(4) of an access switching subsystem(ASS) processes an originating call or an incoming call of a specific subscriber to connect the corresponding call, and supplies final charging data necessary for a charging record generation to a charging data generator(6). The charging data generator(6) generates a charging record for being stored, and temporarily stores the charging record in a charging buffer(8), when a charging data receiver(12) of a central control subsystem(CCS)(10) has a failure. If the charging data receiver(12) is normal, the charging record is transmitted to the charging data receiver(12). The charging buffer(8) temporarily stores the charging record, and supplies the charging record to the charging data generator(6) according to request of the charging data generator(6). The charging data receiver(12) receives and records the charging record, and stores the charging record in a charging storage(14). An operator interface(16) interfaces an operator terminal with the CCS(10), and receives the charging record through the charging buffer(8) and the charging data receiver(12), then transmits the charging record to the operator terminal. The operator terminal displays information included in the charging record on a self-screen.
Patent KR-20010005401-A (KR)
Inventor: LEE CHUL MIN
IPC: E03F7/12
Filed: 1999-06-30
Abstract: PURPOSE: A sewer pipe investigation device through a street inlet is provided, which is possible to investigate the state of a pipe freely on the abnormal state of a manhole inlet, easy to carry and possible to rotate from side to side. CONSTITUTION: A sewer pipe investigation device through a street inlet comprises a camera, an illuminator, a motor, a fixed stand and a protective film; a camera and two illuminators are fixed to a reducer shaft of a motor, therefore the internal state of a sewer pipe is investigable through a street inlet according to the forward/reverse direction of a motor and this apparatus is protected by a protective film for protecting a camera section and fixing a motor. Using the driving module of a DC motor to make possible on simple movements and comprising in a liquid crystal and a halogen provides convenience on movements and small specific volume.