baber/WOPTO huggingface dataset:
Patent KR-20040051717-A (KR)
Title: Apparatus for charging battery by using voltage controlled oscillator
Inventor: PARK JAE GEUN
IPC: H02J7/00
Filed: 2002-12-11
Abstract: PURPOSE: A battery charging unit using VCO(Voltage Controlled Oscillator) power is provided to charge the local output power having a higher level than necessary power level of a transmitting end and a receiving end by using a DC converter. CONSTITUTION: A battery-charging unit using VCO power includes a DC converter, an adder, an inverter, and a receptacle. The DC converter(110) is used for receiving a pulse signal from a VCO(102) and converting the received pulse signal to a DC voltage. The adder(121) is used for receiving the DC voltage, amplifying the received DC voltage, and an addition voltage. The inverter(130) is used for receiving the addition voltage and inverting the addition voltage. The receptacle(140) is used for receiving the output voltage of the inverter and supplying continuously a supply voltage.
Patent KR-20040053562-A (KR)
Title: System and Method to coordinate web pages of a user
Inventor: CHOI GYEONG CHEON
IPC: G06F17/00
Filed: 2002-12-17
Abstract: PURPOSE: A system and a method for coordinating a web page are provided to coordinate the web page through the Internet by placing between a user and the web page formed to communicating with a specific web address. CONSTITUTION: An item database(33) stores the information for various kinds of items for coordinating the web page. A member manager(31-1) manages the member by storing the information needed for registration received from the member in a member information database(32). An item manager(31-2) makes the member select the desired item by providing various kinds of item information and stores the item kept by the member in a user database(34). An item communicator(31-3) has the predetermined web address, reflects the item on the web page by searching the user database and transmitting the item information and the item position information to the member if the member ID information is received from the web page, and stores the item position information in the user database if the item position information is received from the web page.
Patent KR-20030053445-A (KR)
Title: Method and apparatus for buffer partitioning without loss of data
Inventor: MOLLER HANAN Z
IPC: G06F13/38
Filed: 2002-12-20
Abstract: PURPOSE: A method and an apparatus for buffer partioning without loss of data are provided to divide an active buffer without loss of stored data in the buffer. CONSTITUTION: An apparatus and method for moving and/or resizing logical buffers that comprise a memory space without the loss of data. Each buffer comprises a linear and contiguous set of storage locations, and operates according to a FIFO priority scheme, using a read address pointer to indicate the location from which data is read from the buffer and a write address pointer indicating the address into which data is written. A buffer is relocated or resized within the memory space by changing the base location address and/or the top location address into free storage locations. To accomplish the relocation or resizing without the loss of data, the read address is first checked to determine if it bears an appropriate relationship to the new base and top memory locations.
Patent KR-20030053451-A (KR)
Title: Method and apparatus for switching between active and standby switch fabrics with no loss of data
Inventor: MOLLER HANAN Z
IPC: H04L45/586
Filed: 2002-12-21
Abstract: PURPOSE: A method and apparatus are provided which is related to a method and apparatus for switching between an active and a standby switch fabric such that no data is lost during the switching process. CONSTITUTION: The first switch part(12) is an active mode state and the second switch part(14) is a stand-by mode state. A control signal is generated from a controller(30) before changing the first switch part into the stand-by mode state and the second switch part into the active mode state. A plurality of input parts(20,22,24,26) end the transmission of signals to the first switch part in response to the control signal. A drain timer is then operated in response to the control signal. When ending the drain timer, the signals of the input parts, are transmitted from the input parts to the second switch part. When ending the drain timer, a plurality of output parts prepares for receiving data from the second switch part.
Patent KR-20040056671-A (KR)
Inventor: KIM JAE HO
IPC: F28F17/00
Filed: 2002-12-24
Abstract: PURPOSE: An evaporator unit is provided to remove condensate and foreign matters between the lower tank part of the evaporator and the case easily, and to prevent corrosion of the tank by inclining the evaporator to the air flow direction with mounting a corrosion preventing unit in the lower tank part of the evaporator or the lower front of the manifold. CONSTITUTION: An evaporator unit comprises an evaporator(10) having plural tubes stacked and composed of a heat exchange medium passage and a tank part(13), and manifolds communicated with the tank part of the tubes to input and output the heat exchange medium; a case discharging condensate from the outer surface of the evaporator; and a corrosion preventing unit formed in the lower part of the evaporator to prevent corrosion of the tank part by removing condensate and foreign matters. The corrosion preventing unit is formed in the lower front of the manifold communicated with the lower tank part of the evaporator, and composed of a protruded part(18) to incline the evaporator to the air flow direction.
Patent KR-20020031161-A (KR)
IPC: F02B39/00
Filed: 2000-07-20
Abstract: 내연기관용 터보 과급기는 컴프레서 하우징 외부 표면을 따라 배치되며 컴프레서 하우징(12)과 일체로 주조 또는 가공된 밸브 마운트를 가지고 있으며, 밸브는 제한 오리피스를 통하여 컴프레서 볼류트와 연통하는 제1 공기 포트(18), 제1 포트와 연통하는 적어도 하나의 제2 공기 포트(40) 및 컴프레서 공기 흡입구와 연통하는 제3 포트(20)를 포함하고 있다.  마운트는 솔레노이드 밸브(28)를 밸브 마운트에 부착하기 위한 부착물, 그리고 솔레노이드 밸브와 제2 및 제3 공기 포트 사이에 누출방지 시일을 형성하기 위한 수단을 포함하고 있다.  솔레노이드를 작동하기 위한 제어 시스템(164)은 웨이스트게이트 액추에이터(170)를 제어하는 응용을 위해 제2 공기 포트로부터 제3 공기 포트로 압력의 배출을 허용하거나 또는 제1 포트로부터 제2 포트로 압력을 배출함에 의해서 웨이스트게이트 액추에이터를 억제할 수 있도록 허용한다.
Patent KR-20020027509-A (KR)
Title: 치과용 제품의 탈취, 오염 방지용 조성물
IPC: A61K6/838
Filed: 2001-05-30
Abstract: 인회석에 의해 그 표면이 부분적으로 피복된 이산화티탄을 주성분으로 함유하는 조성물을 혼입한 치과용 수지소재를 제공한다. 이 치과용 수지소재에 있어서는, 이산화티탄으로서 아나타제형, 루틸형 또는 브루카이트형 이산화티탄 또는 이들 이산화티탄의 혼입물을 사용하는 것이 바람직하다. 또한, 이산화티탄을 부분적으로 피복하는 인회석은 분말형태의 이산화티탄을 유사체액에 침지해서 사람의 체온과 같이 약36℃의 온도로 유지하여 교반하는 것에 의해 생성된다. 이 경우, 이산화티탄의 표면에 생성되는 인회석은 2밀리 이하의 두께의 판상결정으로서 이산화티탄 표면의 0.001∼10%를 피복하도록 생성되는 것이 긴요하다.
Patent KR-20020033788-A (KR)
Title: 텔레비전 신호에서 다중 경로 왜곡을 저감하기 위한 방법및 장치
IPC: H01Q7/00
Filed: 2000-09-08
Abstract: 텔레비전 신호에서 다중 경로 왜곡을 저감하기 위한 방법 및 장치는 소망하는 텔레비전 신호의 공간적으로 고유한 복사를 수신하기 위한 복수 개의 안테나 소자를 포함한다. 상기 텔레비전 신호의 상기 복수 개의 공간적으로 고유한 복사는 적응 결합기에 결합되어 텔레비전 수상기에 입력될 공간적으로 결합된 신호를 생성한다.
Patent KR-20020031191-A (KR)
IPC: B23K101/02
Filed: 2000-09-01
Abstract: 본 발명은 적어도 하나의 단부면 상에 벌집형상체(4)의 지지 매트릭스, 특히 촉매 지지체를 접합하는 것에 관한 것이며, 상기 지지 매트릭스는 적어도 부분적으로 구조화된 층 또는 감긴 금속 시이트를 포함하며 관형 자켓(7) 내에 배열된다.  본 발명에 따라, 지지 매트릭스는 유도 코일(12)을 포함하는 표면 인덕터(13)를 사용하여 접합된다.  대응해서 위치된 유도 코일(12)은 적어도 지점(12), 특히 효과 영역(15) 내의 금속 시이트 사이에 접합점을 형성하는 방식으로 벌집형상체(4)의 단부면(11)을 적어도 부분적으로 가열한다.  이러한 형태의 접합 영역은 단부면의 크기 변화에 따라 바람직하게 제조될 수 있다.  본 발명은 이러한 목적의 표면 인덕터(13)를 제공한다.  상기 표면 인덕터가 효과적인 영역(14, 15)은 유리하게 수정될 수 있으며 이에 의해 접합 지점(14) 및/또는 효과 영역(15)의 제조를 수정한다.  본 발명은 납땜 또는 소결과 같은 접합 기술을 사용하여 접합시키는데 특히 적절하며 촉매 지지체를 제조하는 연속 공정에 유리하게 사용될 수 있다.
Patent KR-20020061600-A (KR)
Title: 지연 개방 가스 밸브
IPC: F16K31/42
Filed: 2000-09-29
Abstract: 가스 밸브의 연속적으로 점진적이고 원활한 개방을 제공하기 위한 개량된 지연 개방 가스 밸브(20)는 계량 오리피스(36)에 의해 확장가능한 통제 챔버(32)에 연결된 확장가능한 보조 챔버(34)를 포함한다. 상기 확장가능한 보조챔버(34)는 확장가능한 통제 챔버(32)의 확장을 지연시키며, 그럼으로써 가스 밸브의 개방을 지연시키고 가스가 더 낮은 압력하에서 훨씬 작은 소음으로 연소되는 것을 허용한다. 상기 가스 밸브는 가스 밸브를 통한 가스 유동을 통제하기 위하여 정상적으로 폐쇄된 밸브 부재(30,44)가 구비되고 통제 챔버의 확장시 상기 밸브 부재를 개방위치로 이동시키도록 작동되는 다이아프램(64)은 확장가능한 통제 챔버(32)의 이동 가능한 한쪽 벽을 형성한다.
Patent KR-20020071924-A (KR)
IPC: H04N5/76
Filed: 2001-11-06
Abstract: 콘텐트 정보를 나타내는 데이터 스트림은 플레이-아웃(play-out)을 위해 처리된다. 상기 스트림의 프로세싱은 제1 속도에서의 프로세싱으로부터 제2 속도에서의 프로세싱으로 변경된다. 상기 제1 속도는 상기 제2 속도와는 다르다. 상기 제1 속도에서의 프로세싱이 정지되면, 상기 제1 속도에서의 프로세싱 동안 통과되었던 스트림 내의 위치에서 상기 제2 속도에서의 프로세싱이 개시된다. 상기 위치는 재조정될 수 있다.
Patent KR-20030026924-A (KR)
Title: Method and apparatus for common packet channel assignment
IPC: H04W74/06
Filed: 2001-02-23
Abstract: A method and device for initiating uplink data packet communication from a mobile device to a base station on a common packet channel is disclosed. The communication is initiated when the mobile device reads broadcast status of common packet channels, after which the mobile device sends an access preamble to the base station that is acknowledged by the base station, and then the mobile device sends a collision preamble which the base station answers with a matching collision response. If the base station's response to the collision preamble also includes a channel allocation message, then the base station begins uplink data packet communication on an allocated channel provided that the allocated channel previously had free broadcast status. However, if the base station's response to the collision preamble includes a channel allocation message designating channel(s) not previously having free broadcast status, then the mobile device's access attempt is aborted.
Patent KR-20040025514-A (KR)
IPC: A47K7/00
Filed: 2001-05-03
Abstract: 본 발명은 이온 감응성, 수분산성 중합체에 관한 것이다.  또한, 본 발명은 이온 감응성, 수분산성 중합체의 제조 방법 및 결합제 조성물로서의 이들의 응용에 관한 것이다.   아울러, 본 발명은 이온 감응성, 수분산성 결합제 조성물을 함유한 섬유 함유 패브릭 및 웹 및 수분산성 개인용 위생 제품에서 이들의 응용에 관한 것이다.
Patent KR-20030040208-A (KR)
IPC: G01N33/58
Filed: 2001-05-08
Abstract: 형광 폴리머와 관련되고 형광 폴리머를 소광시키는 소광제(Q), 사슬화 요소(T), 리간드를 포함하는 화학적 조성물을 개시한다. 분석 샘플이 유입되었을 때, 리간드(L)는 표적 생물학적 물질이 존재하는 경우, 그에 결합하여 QTL 분자가 형광 폴리머로부터 분리되도록 하고 이로써 검출하고자 하는 형광을 증가시킨다. 동일한 화합물이 경쟁 분석에서 이롭게 사용된다. 전기장 또한 적용되어 형광 폴리머로부터 QTL 분자를 분리시킬 수 있다. 이 방법을 위한 표적을 검출하는 방법 또한 개시한다.
Patent KR-20030005357-A (KR)
IPC: B29L30/00
Filed: 2002-03-15
Abstract: 본 발명의 자체 밀봉 타이어는 공압 타이어의 한쪽 숄더부로부터 다른쪽 숄더부에 이르는 타이어 내멱면의 전체면에 걸쳐서 펑크 밀봉층을 갖고 있다.  이 펑크 밀봉층은 타이어 벽면측에 노출되고, 타이어 반벽면측에는 노출되지 않도록 점착재를 함침시킨 띠 형상 스폰지층의 타이어 벽면측면에 점착재로 이루어지는 점착층을 형성한 띠 형상 밀봉층으로 구성되고, 이 띠 형상 밀봉층이 타이어 내벽면에 타이어 둘레 방향으로 권취한 상태로 점착층을 개재하여 점착되어 있다.
Patent KR-20030020302-A (KR)
IPC: H01R35/02
Filed: 2001-06-19
Abstract: 제1 지지 부재(5)에 의해 운반되는 전기 커넥터(3)이며, 제2 지지 부재(4)에 의해 차례로 운반되는 상보적 전기 커넥터(2)와 협력하며, 제1 및 제2 지지 부재(5, 4)를 조립 방향(A)으로 연결함으로써 상보적 커넥터(2)와 연결될 수 있으며, 상기 커넥터(3)는 각각의 전기 단자(47)을 수납하기 위해 적어도 하나의 공동을 한정하는 절연 케이싱(45)을 가지며 상기 케이싱(45)을 제1 지지 부재(5)에 연결가능한 프레임 부재에 연결하는 탄성 연결 수단(55)을 가지고, 연결 중에 조립 방향(A)에 대한 지지 부재(5, 4)의 어떤 각도의 오정렬의 경우에도 상보적 커넥터(2)와 케이싱(45)의 정확한 정렬을 허용하기 위해서 탄성 연결 수단(55)은 조립 방향(A)에 대해 횡 방향으로 가요성을 가진다.
Patent KR-20040062701-A (KR)
Inventor: LIM CHAE IL
IPC: G11B27/10
Filed: 2003-01-03
Abstract: PURPOSE: A device for playing a moving image capable of performing a quick search by a specification of a search section is provided to display thumbnail screens for I(Infra) frames located at certain time intervals on a display screen, so that a user can immediately select a desired scene, thereby reducing a search time. CONSTITUTION: An input portion(110) receives a picture search-related command to quickly search a desired moving image screen. A data reading portion(130) accesses a recording medium where moving image data including I frames is recorded, and reads the moving image data. A display portion(140) displays thumbnail screens relative to the I frames and/or moving images by the moving image data. A controller(120) calculates an I frame extraction time, extracts the I frames based on the I frame extraction time, generates the thumbnail screens relative to each frame, and displays the thumbnail screens on the display portion(140).
Patent KR-20030013492-A (KR)
Inventor: CHO JAE UI
IPC: E04B1/68
Filed: 2003-01-11
Abstract: PURPOSE: An expansion joint repair structure of a structure with a compressed elastic pad by corrosion-resistance steel is provided to prevent constant cracks and a water leakage in a structure. CONSTITUTION: The expansion joint repair structure of a structure with a compressed elastic pad by corrosion-resistance steel comprises the steps of installing several reinforcing bars(11) inward, laying a water-stopper(12) on a joint formed by each form, fitting a backup material(15) on the edge of a joint of a structure(10), then applying sealant(13), fixing single steel by anchor bolts(23), interposing an elastic pad(20) provided with a compression part(24) in a joint of the structure(10) to compress the sealant(13), and fixing primary and secondary steel(21,22) outward to be slid mutually when relaxing by a difference in temperature.
Patent KR-20040065451-A (KR)
Inventor: BAE GWI NAM
IPC: G01N15/02
Filed: 2003-01-14
Abstract: PURPOSE: An impactor for measuring a coarse particle is provided to accurately examine the total amount of the coarse particles by measuring the size distribution of the coarse particles, to reduce the cost of production, and to make maintenance simple. CONSTITUTION: An impactor for measuring a coarse particle comprises an inlet(11) prepared in the upper face of a housing(10) and having diameter longer than 30 micrometer, a first acceleration nozzle plate(18) having a nozzle hole(16) of diameter longer than 20 micrometer, a second acceleration nozzle plate(22) having a nozzle hole(20) of diameter 7-13 micrometer, a third acceleration nozzle plate(26) having a nozzle hole(24) of diameter 3-7 micrometer, and a final filter(28) filtering the particle passing through the nozzle hole of the third acceleration nozzle plate.
Patent KR-20040066245-A (KR)
Inventor: BAE SEOK SUN
IPC: B65D43/02
Filed: 2003-01-17
Abstract: PURPOSE: An airtight structure of closed container is provided to maintain airtightness and to reduce manufacturing cost by making a dual-injection molding of packing material as one body. CONSTITUTION: The airtight structure of closed container includes; a body(10), molded by injection-molding and whose upper open end is molded with rim(11) as one body; a cover(20), fit into the body(10) to maintain airtightness; a packing rim formed by being additionally dual-injection molded in the form of surrounding the open end of the rim(11); and an insert channel(26) for packing rim coinciding with the outer shape of the packing rim(16) and so formed on the cover(20) as to receive the packing rim(16).
Patent KR-20040066261-A (KR)
Inventor: JUNG YONG GUK
IPC: H01L21/60
Filed: 2003-01-17
Abstract: PURPOSE: A bonding pad of a semiconductor device is provided to improve reliability of a package by forming a bend of an embossed type on the surface of a pad in a CMP(chemical mechanical polishing) process and by concentrating the pressure stress occurring in a bonding process on the surface of the pad. CONSTITUTION: A semiconductor substrate(30) is prepared. An interlayer dielectric(32) is formed on the semiconductor substrate. The first metal layer(34) is formed on the interlayer dielectric. A plurality of vertical via holes(36) are formed on the first metal layer at regular intervals. The second metal layer(38) is formed on the plurality of vertical via holes. A horizontal via hole(40) of a concave type is formed on the second metal layer. The third metal layer(42) having a concave part and a convex part is formed on the horizontal via hole.
Patent KR-20040073152-A (KR)
Inventor: JU WAN SEOK
IPC: C07K1/12
Filed: 2003-02-13
Abstract: PURPOSE: A method for preparing silk peptide with nerve cell protecting activity is provided, thereby improving the preparation efficiency of silk peptide, and preparing small molecular weight of silk peptide which can be easily absorbed into the human body. CONSTITUTION: The method for preparing silk peptide with nerve cell protecting activity, having the average molecular weight of 400 to 2,000 dalton comprises the steps of: (a) dissolving silk protein such as silk fibroin in a solution containing calcium salt at 60 to 95 deg. C; (b) removing the calcium salt such as calcium chloride from the silk fibroin solution; and (c) adding protein decomposing enzyme selected from thermoase, flavourzyme, sumizyme, protamex, protin and a combination thereof into the silk fibroin solution at 45 to 60 deg. C.
Patent KR-20040073831-A (KR)
Title: Intake promoting device for vehicle
Inventor: MOON CHI HYOUNG
IPC: F02M35/10
Filed: 2003-02-14
Abstract: PURPOSE: An intake promoting device for a vehicle is provided to amplify an rpm generated by the engine driving without using any additional power transmission wire, thereby supplying a lot of air to cylinders. CONSTITUTION: An intake promoting device for a vehicle includes an engine pulley(30) rotating by the driving of an engine, and an rpm amplifying element(31) connected to the engine pulley by a coupling to amplify the rpm of the engine. A turbo fan(34) is fixed to an output shaft of the rpm amplifying element to rotate with the rpm amplifying element, so that external air is inhaled into an intake tube.
Patent KR-20040075189-A (KR)
Inventor: CHA GEUM HWAN
IPC: B21C25/06
Filed: 2003-02-20
Abstract: PURPOSE: An extrusion dies for reducing stress of aluminum covered steel wire manufacturing line is provided to reduce damage and abrasion of the dies by forming a depressed inclination groove part on a part into which aluminum enters between guide dies and extrusion dies, thereby reducing stress received by the extrusion dies. CONSTITUTION: In a covered steel wire manufacturing line comprising a guide dies(40) for guiding a steel wire; a wheel on which a guide groove for guiding an aluminum wire, and which is rotated by rotation shaft; a guiding member connected to the wheel to guide the aluminum wire moved along the guide groove of the wheel; a dies fixing body connected to the other end of the guiding member to fix the guide dies; and an extrusion dies(52) installed in the dies fixing body adjacently to the dies fixing body to extrude the steel wire to cover aluminum layer on the steel wire, the extrusion dies for reducing stress of aluminum covered steel wire manufacturing line comprises a depressed inclination plane part(54) formed on the circumference of pressing hole(56) of the extrusion dies with being inclined to a certain inclination angle (θ) to reduce frictional stress during entering of the aluminum wire.
Patent KR-20040076969-A (KR)
Inventor: LEE GI BEOM
IPC: H01J11/36
Filed: 2003-02-27
Abstract: PURPOSE: A plasma display panel is provided to maximize contrast and improve color temperature and Δ UV. CONSTITUTION: A plasma display panel comprises a substrate, a plurality of barrier ribs(130), and protrude parts(130R,130G,130B). The barrier ribs are formed on the substrate with the same interval and separates red, green, and blue discharge cells. The protrude parts protrude at least one of the barrier ribs. The width of the protrude parts are different according to the cells. The protrude parts include an incline surface extended from the both side surfaces of the barrier ribs and a vertical surface in parallel to the barrier ribs.
Patent KR-20040019847-A (KR)
Inventor: KIM YEONG TAEK
IPC: H04N1/60
Filed: 2003-02-28
Abstract: PURPOSE: A method for adjusting color saturation of an RGB color system is provided to reduce an amount of operation by removing necessity of converting RGB signals into YUV signals, thereby reducing the complexity of hardware. CONSTITUTION: An RGB color sample vector is obtained, wherein the RGB color sample vector represents color pixels of an inputted image obtained from RGB video signals. A white and color divider(22) decomposes an input color vector into a white vector and a color tone vector. A multiplier(24) multiplies the color tone vector by a saturation adjusting parameter for obtaining a saturation-adjusted color tone vector. A vector adder(26) adds the white vector to the saturation-adjusted color tone vector for obtaining a saturation-adjusted RGB color sample vector. Color pixels of an output image are represented by using the saturation-adjusted RGB color sample vector.
Patent KR-20040078834-A (KR)
Inventor: PARK JONG BEOM
IPC: H04N7/01
Filed: 2003-03-05
Abstract: PURPOSE: A vertical scaling device of a display system is provided to reduce the area occupied by a line memory. CONSTITUTION: A vertical scaling device of a display system includes a 1-port line memory(10), a multiplexer(20), a 2-port line memory(30), a vertical interpolator(40), and a controller(50). The 1-port line memory stores a plurality of line data items of a horizontally interpolated input video signal. The multiplexer outputs two of the plurality of line data items stored in the 1-port line memory. The 2-port line memory receives the two line data items output from the multiplexer and stores the received two line data items. The vertical interpolator receives the two line data items from the 2-port line memory and interpolates the two line data items. The controller outputs a control signal to the multiplexer when a predetermined number of line data items stored in the 2-port line memory is output.
Patent KR-20030074343-A (KR)
Title: 타이어 제작용의 반경 방향으로 확장 가능한 어셈블리 드럼
IPC: B29D30/36
Filed: 2003-03-10
Abstract: 본 발명은 반경 방향으로 확장 가능한 개선된 타이어 어셈블리 드럼(10) 및 상기 타이어 어셈블리 드럼(10)을 이용하여 타이어 구성요소의 조립에 의해 타이어를 형성하는 방법에 관한 것이다.
Patent KR-20040081221-A (KR)
Inventor: CHO GUK CHUN
IPC: H03M7/00
Filed: 2003-03-14
Abstract: PURPOSE: An apparatus for reducing quantization errors by using a sigma-delta modulation method in case that a duty ratio of a PWM modulator increase is provided to remove the pop noise without using a selecting switch by increasing a duty ratio of a driving signal of an amplifier, gradually. CONSTITUTION: A PWM modulator(220) is used for outputting PWM signals by modulating PCM(Pulse Code Modulation) data. A two-level sigma-delta modulator(210) is used for controlling PWM modulator to output a PWM driving signal having a constantly increasing duty ratio. A MUX(212) is used for selecting and outputting one of quantized PCM data and audio PCM data of the two-level sigma-delta modulator. A semiconductor device(232,234) is used for amplifying the PWM driving signal. An LC low-frequency band pass filter(240) is used for smoothing the output voltage of the semiconductor device. A DC blocking capacitor(250) is connected to the LC low-frequency band pass filter in order to shield DC elements.
Patent KR-20040082678-A (KR)
Inventor: KIM HYEON TAE
IPC: B24B9/00
Filed: 2003-03-20
Abstract: PURPOSE: A device for automatically grinding both edges of a small-sized plate is provided to improve working efficiency by automatically grinding both edges of the small-sized plate. CONSTITUTION: A device for automatically grinding both edges of a small-sized plate is composed of an inlet conveyor(1), a grinding unit, and an outlet conveyor(2). The grinding unit includes a guide(5) for guiding the small-sized plate, two side driving rollers(7) for moving the small-sized plate, a motor(8) for rotating the side driving rollers, an air cylinder for pushing the side driving rollers to the small-sized plate, and cutters for cutting edges of the small-sized plate.
Patent KR-20030032988-A (KR)
Inventor: LEE JIN SU
IPC: G06Q50/30
Filed: 2003-03-24
Abstract: PURPOSE: A vehicle Internet security device is provided to recognize an emergency state and store state data(video, speed, each impact) thereof by connecting a camera and various kinds of sensors mounted in a vehicle to a computer having a modem, thereby displaying a state of the vehicle as a moving picture through a wireless Internet and controlling the sensors in an emergency state. CONSTITUTION: A computer(6) mounted at an interior of a vehicle compresses an analogue signal transmitted from a camera, converts the analogue signal into a digital signal, and transmits the digital signal to a wireless Internet base station(10) through a modem. The computer(6) receives a signal through a wireless Internet and connects the signal to a camera. The computer(6) recognizes an emergency state of the vehicle from sensing values from sensors, stores a video and data, and transmits the video and data to an Internet server(12) in a remote place through the wireless Internet base station(10) and an Internet network(11).