baber/WOPTO huggingface dataset:
Patent KR-20010067443-A (KR)
Title: the lingual bracket jig for orthodontics
Inventor: KIM JOONG HAN
IPC: A61C7/14
Filed: 2000-12-19
Abstract: PURPOSE: An apparatus for attaching a lingual bracket for correcting the irregularities of teeth is provided to simplify the attachment work of the bracket, and to increase the accuracy and the promptness of the correcting operation of the teeth. CONSTITUTION: The apparatus for attaching a lingual bracket is comprised of a cusp standard plate(1) having a scale of desired pitch; a reference standard point offering member(2); a zig member(3) supported by the cusp standard plate; a vertical panel having a cusp standard plate insertion hole; a lingual bracket support member(4); and a grasp device for grasping the lingual bracket. The one end of the reference standard point offer member is fitted in the cusp standard plate and the other end thereof is disposed in two points of teeth. The zig member adjusts the height of the labial bracket and the lingual bracket to attach the labial bracket at a correcting position.
Patent KR-20020053315-A (KR)
Title: Spare tire mount apparatus
Inventor: AHN YEONG TAE
IPC: B60C3/08
Filed: 2000-12-27
Abstract: PURPOSE: A spare tire mounting device is provided to easily install a spare tire by making a spare tire carrier move to the rear portion of a vehicle via a four-link structure and to prevent the collision of the carrier and the ground by using a damping unit. CONSTITUTION: A spare tire mounting device comprises a carrier(54) installed at a rear bumper(B') of a vehicle body(50) to hang a spare tire(52), a fixing unit installed between the carrier and the vehicle body to prevent the displacement of the carrier, and a link unit(60) to move the carrier toward the rear portion of the carrier when the fixing unit is separated from the carrier. The fixing unit consists of a fixing hook(56a) and a nut(56b) to fix the fixing hook on the vehicle body. The link unit includes a damping member(66) to prevent the breakage of the carrier. For removing the spare tire from the carrier, the fixing hook is removed from the carrier. Then, the carrier moves downward by the gravity. Thereby, the spare tire is removed easily.
Patent KR-20020053381-A (KR)
Inventor: JUNG SANG CHEOL
IPC: G06F13/00
Filed: 2000-12-27
Abstract: PURPOSE: A serial communication device is provided to enable an electronic control apparatus to adopt selectively the RS-232 or the RS-422 serial communication method in the case of communicating with the electronic control apparatus, and to make unnecessary other external serial port or interface circuit for connecting an electronic apparatus to an external serial port so that it can simplify a structure and reduce a manufacturing cost. CONSTITUTION: The device comprises the first electronic apparatus(10), a multiplexor(20), the first voltage converter(30), the second voltage converter(40), the second electronic apparatus(50) and the third electronic apparatus(60). The first voltage converter(30) is for the RS-232 serial communication, and the second voltage converter(40) being for the RS-422 serial communication. In the case that the first electronic apparatus(10) communicates with the second electronic apparatus(50) by the RS-232 communication method, the apparatus(10) outputs an RS-232 selection signal via an output selection line, and then outputs data via a signal transmission line. The multiplexor(20) selects the first voltage converter(30) according to the RS-232 selection signal, and transmits the data, output via the signal transmission line, to the first voltage converter(30). In the case that the first electronic apparatus(10) communicates with the third electronic apparatus(60) by the RS-422 communication method, the apparatus(10) outputs an RS-422 selection signal via an output selection line, and then outputs data via a signal transmission line. The multiplexor(20) selects the second voltage converter(40) according to the RS-422 selection signal, and transmits the data, output via the signal transmission line, to the second voltage converter(40).
Patent KR-20010062822-A (KR)
Inventor: SHINTOME MASAHIRO
IPC: C09D7/61
Filed: 2000-12-28
Abstract: PURPOSE: A paint material for construction finishing, a panel for constructional finishing and a method for preparing these are provided to realize commercialization of shirasu as a paint material by mixing a clay material having high maintainability with shirasu, thereby solving cracking and water flowing problems of shirasu mainly caused by the separation of water and shirasu. CONSTITUTION: The paint material for construction finishing (1) comprises 50 to 65 wt.% of a dried shirasu (A) which is used in its unprocessed original form as a component, 30 to 40 wt.% of a binding agent (B), 3 to 10 wt.% of a clay material (C), 5 to 10 wt.% of shirasu balloons (D), 0.08 to 2 wt.% of a bond reinforcing agent (E), 0.1 to 3 wt.% of a color pigment (F) and 1 to 5 wt.% of fibers for plaster (G). The method for preparing the paint material for construction finishing (1) comprises the process of mixing the resulting materials together after adding an appropriate amount of water to 50 to 65 wt.% of a dried shirasu (A), 30 to 40 wt.% of a binding agent (B), 3 to 10 wt.% of a clay material (C), 5 to 10 wt.% of shirasu balloons (D), 0.08 to 2 wt.% of a bond reinforcing agent (E), 0.1 to 3 wt.% of a color pigment (F) and 1 to 5 wt.% of fibers for plaster (G). The panel for constructional finishing (3) is characterized in that the resulting mixture is applied onto a substrate (2), such as a gypsum board, veneer plywood, concrete board, mortar-applied waterproof plywood, or asbestos board, and the resulting board is subjected to surface-finishing treatment according to an intended design. The method for preparing the panel for constructional finishing (3) comprises the processes of mixing the resulting materials together after adding an appropriate amount of water to the paint material for construction finishing (1); applying the resulting mixture onto the substrate (2); surface-finishing treating the resulting board according to an intended design; and drying the surface-finishing treated board.
Patent KR-20020055735-A (KR)
Title: Blocking agent or treating agent containing (­)­epigallocatechin gallate(egcg) as an effective component against global ischemic neuronal damage
Inventor: KIM SANG PYO
IPC: A61K31/353
Filed: 2000-12-29
Abstract: PURPOSE: Provided is an agent for preventing and treating global ischemia nerve cell damage containing (-)-epigallocatechin gallate(EGCG) of polyphenol of green tea as effective component. The EGCG has a protecting effect against transient ischemic nerve cell damage. CONSTITUTION: The global ischemia nerve cell damage preventing and treating agent contains epigallocatechin gallate and a pharmaceutically acceptable carrier such as physiological saline. The amount of the EGCG to be administered is 25 to 50mg/kg. Comparative data show inhibition of delayed nerve cell damage caused by transient global ischemia induced from Meriones ungiculatus.
Patent KR-20020056022-A (KR)
Title: Potocuring banish composition and its usage
Inventor: KIM JANG UK
IPC: C09D175/06
Filed: 2000-12-29
Abstract: PURPOSE: Provided are a paint composition showing excellent flexibility, hardness, ultraviolet curing, abrasion resistance, weatherability, and chemical resistance when used in application requiring for flexibility such as plastic bottle, telephone, sheet, film, and so on, and a molded plastic article coated with the composition. CONSTITUTION: The photocurable paint composition comprises 10-70 parts by weight of urethane acrylate of formula 1, 10-30 parts by weight of specifically modified polyfunctional monomer, 10-50 parts by weight of reactive monomer, 0.1-20 parts by weight of photosensitizer, 10 parts by weight or less of leveling agent, and small amount of additives. In the formula 1, R1 represents hydrogen atom or methyl group, R2 represents (CH2)n or formula a and b(wherein n is an integer of 2-6, R4, R5 and R6, which are same or different, represent a linear alkyl group, provided that at least one of R4, R5 and R6 is methyl group, R7 represents an aliphatic, cycloaliphatic or aromatic compound), X represents formula c(wherein b is an integer of 5-20, c is an integer of 2-5, Y is hydrogen atom or methyl group).
Patent KR-20020058886-A (KR)
Title: An electric management system of gasoline direct injection engine and a method compensating fuel pressure of the same
Inventor: KIM WON TAE
IPC: F02D41/34
Filed: 2000-12-30
Abstract: PURPOSE: A method for compensating fuel pressure in GDI(gasoline direct injection) engine is provided by measuring fuel injection pressure using a fuel pressure sensor. CONSTITUTION: An engine control system for gasoline direct injection engine comprises a driving mode deciding portion(10) receiving an engine rpm and an engine load, and deciding driving mode among a theoretical air fuel ratio mode, a lean driving mode, an ultra lean driving mode. An electronic control portion(20) outputs an electronic control value by the decided driving mode. A fuel pressure sensor(30) measures fuel injection pressure periodically and outputs it to the electronic control portion.
Patent KR-20010030958-A (KR)
Title: 금속 연료 테이프를 채용한 금속 공기 연료 전지
Filed: 1998-10-06
Abstract: 본 발명은 금속-공기 연료 전지 시스템에 관한 것으로서, 본 발명의 금속-연료 테이프는 시스템의 성능을 향상시키기 위하여 자동으로 그 유용성이 관리되면서 시스템의 방전 헤드 조합체와 재충전 헤드 조합체로 이송되도록 한 구조에 관한 것이다.
Patent KR-20010031435-A (KR)
Title: 다중모드 섬유 링크 분산 보상기
IPC: H04B10/18
Filed: 1998-10-06
Abstract: 분산이 보상된 다중모드섬유 링크가 개시되어 있다. 상기 링크의 오리지날 도파관 섬유에 의해 야기된 분산을 계수하며 λ p 파장 및 프로파일 형상을 갖는 보상 도파관 섬유를 상기 링크에 추가함으로써, 본질적으로 모든 파장의 분산이 보상될 수 있다. α프로파일을 포함한 실시예에 대하여, 상기 보상기 도파관 프로파일과 λ p 를 오리지날 링크와 보상된 프로파일 및 λ p 와 연관시킨 분석식이 제공된다.
Patent KR-20010040468-A (KR)
Title: 액정 표시 장치
IPC: H01L27/12
Filed: 1998-01-30
Abstract: 액정 표시 장치를 구성하는 기판에는 복수의 주사 배선과, 이들에 매트릭스형으로 교차하는 복수의 신호 배선과, 이들의 배선의 교점에 대응하여 배치된 복수의 반도체 소자가 형성된다.  복수의 반도체 소자 각각은 진성 반도체 영역과 이 진성 반도체 영역을 끼우도록 형성되어 고저항 영역과 저저항 영역으로 이루어지는 한 쌍의 소정 도전형의 반도체 영역을 구비한 반도체층과, 진성 반도체 영역 상에 절연막을 통해 형성된 전극과, 상기 한 쌍의 소정 도전형의 반도체 영역의 저저항 영역 각각에 접속된 제2 및 제3 전극을 갖고 있다.  복수의 주사 배선의 각각은, 복수의 반도체 소자의 대응하는 반도체 소자의 제1 전극을 구성하며, 제1 전극은 절연막 상에 형성된 제1 배선과, 이 제1 배선 상에 형성된 제2 배선을 지니고, 이 제2 배선의 일부는 한쌍의 소정 도전형의 반도체 영역의 고저항 영역의 일부와 상기 절연막을 통해 중첩되고 있다.
Patent KR-20010041731-A (KR)
IPC: B65D5/04
Filed: 1999-03-16
Abstract: An article carrier and blank for forming an article carrier for containing a plurality of necked articles (A) comprising a top, bottom and opposed side panels (24, 14, 32, 18, 26) interconnected together, wherein the top panel (24) comprises article receiving and retaining means (12) including an article retaining flap (56, 58) formed from the top panel (24), which article retaining flap (56, 58) is being adapted to be folded inwardly of the top panel (24) thereby to define an aperture (54) for receiving a neck portion of the article (A) and wherein the article retaining flap (56, 58) abuts said neck portion to engage and retain said article (A)
Patent KR-20010042221-A (KR)
Title: 멀티미디어 콘텐츠 기재 시스템 및 방법
IPC: H04N7/26
Filed: 2000-01-10
Abstract: 본 발명에 따라 비디오 클립 등의 시각 애니메이트된 데이터 프레임의 시퀀스에서 선택된 피처를 나타내는 기술어 데이터 구조가 개시된다.  기술어 데이터 구조는 선택된 피처와 연관된 선정된 속성 필드의 블록 및 선택된 피처와 연관된 사용자 정의된 속성 필드의 블록을 함유하는 표준 기술어 템플릿을 포함한다.  선택된 피처는 시각 애니메이트된 데이터 프레임에서 나타내는 오브젝트, 애니메이트된 데이터 프레임의 시퀀스에서 선택된 프레임, 또는 애니메이트된 데이터 프레임의 시퀀스에서 프레임들의 블록일 수 있다.  기술어 템플릿의 구조화된 정의된 특징은 기술어 데이터 구조를 용이하게 식별할 수 있게 하고 용이하게 탐색할 수 있게 함으로써, 기술어 데이터 구조와 연관된 선택된 피처를 용이하게 식별할 수 있게 하고 용이하게 탐색할 수 있게 한다.
Patent KR-20010042989-A (KR)
IPC: H04L12/56
Filed: 1999-04-15
Abstract: An Internet router treats plural output ports with a common destination as a composite port. A routing table uses the IP address to determine a composite trunk to which the packet is to be forwarded. A forwarding table identifies a route along a routing fabric within the router to a specific output port of the composite port. Output ports and fabric routes are selected to maintain order within a flow by routing the flow along a single fabric route to a single output trunk. The forwarding table may favor output ports which are nearest to a packet input port, and the forwarding table may be modified to dynamically balance load across the trunks of a composite trunk.
Patent KR-20010052283-A (KR)
Title: 목적물을 제어하는 제어 장치 및 방법
IPC: G06F3/0354
Filed: 1999-04-30
Abstract: 예컨대, 컴퓨터 마우스와 같은 제어 장치는, 예컨대 컴퓨터 스크린 상의 커서 같은 목적물을 상기 이미지 기록 수단의 이동에 대한 함수로서 제어하기 위해, 바람직하게는 손으로 움직일 수 있는 이미지 기록 수단을 갖는다. 상기 제어 장치는 상기 이미지 기록 장치가 이동될 때 부분적으로 오버래핑되는 콘텐츠들을 갖는 다수의 이미지들을 기록하고, 상기 이미지들의 부분적으로 오버래핑되는 콘텐츠들은 이미지 프로세싱 수단으로 하여금 상기 이미지 기록 수단이 어떻게 움직였는가를 표시하는 제어 신호들을 발생시키도록 한다. 상기 이미지 기록 수단의 회전에 기초한 제어 방법과 제어 장치도 소개된다.
Patent KR-20010043296-A (KR)
Title: 교대하는 친수성 표면 영역과 소수성 표면 영역을 가지는패턴화된 물품
IPC: B05D5/00
Filed: 1999-04-29
Abstract: 본 발명은 교대하는 소수성 표면 영역과 친수성 표면 영역을 포함하는 패턴화된 표면을 가진 물품에 관한 것이다. 소수성 영역은, 이슬 조건 하에서 소수성 영역 상에 축적된 수분이 친수성 영역으로 이동하여 수액적의 형성을 방지하기에 충분할 정도로 좁을 수 있다. 서리 조건 하에서, 소수성 영역은 비교적 서리가 없는 상태로 유지되므로, 표면의 적어도 부분 투명성이 유지된다. 소수성 영역 표면 상의 무기 산화물 입자는 내마모성을 제공할 수 있다. 본 발명은, 유기 결합제를 제거하는 처리를 통해 친수성 영역의 표면에 존재하는 무기 산화물 입자를 노출시키는 패턴화된 표면의 제조 방법에 관한 것이기도 하다.
Patent KR-20010043392-A (KR)
Title: 마크롤리드 제조 방법의 개선
IPC: C07H17/00
Filed: 1999-05-06
Abstract: 포름알데히드 및 환원제가 존재하는 비할로겐화 용매 중에서 9-데옥소-9a-아자-9a-호모에리트로마이신의 고리 구조 중 9번 위치에 있는 질소 원자를 메틸화하여 아지트로마이신을 제조하는 방법 및 할로겐화 유기 용매가 없는 안정한 무수형 또는 물 이외의 비할로겐화 용매와의 용매화물 형태의 아지트로마이신이 제공된다.
Patent KR-20010052368-A (KR)
Title: 신규한 입자 제형
IPC: A61K31/365
Filed: 1999-05-19
Abstract: 본 발명은 생체적합성 소수성 도메인을 갖는 화합물을 소수성 및 친수성 도메인을 갖는 컨쥬게이트와 조합함으로써 친수성/친유성이 불량한 화합물은 고농도로 동물에 전달할 수 있는 담체를 제공한다. 이러한 제형은 심한 부작용없이 고농도의 치료에 유용한 화합물을 투여하는데 적합하다.
Patent KR-20010081983-A (KR)
IPC: H02G1/06
Filed: 1999-08-04
Abstract: The installation of support rings within large diameter pipes or ducts (14) is made using a robotic vehicle (18) that is supported on wheels (20). The vehicle tows a carriage (12) that latches with a coupling (28). The rings are located in sequence on the carriage and are handled automatically and placed into position.
Patent KR-20020060336-A (KR)
Title: The rinse control method for a washing machine
Inventor: KIM JONG HO
IPC: D06F33/02
Filed: 2001-01-10
Abstract: PURPOSE: A rinsing control method of a washing machine is provided to sufficiently immerse clothing by rotating a pulsator or a washing tub at proper speeds, thereby improving the rinsing efficiency. CONSTITUTION: A rinsing control method of a washing machine includes the steps of rotating a pulsator for separating clothing from an inner surface of a washing tub after dehydrating step(S1), supplying rinsing water while rotating the washing tub at a low speed for immersing the clothing(S2), and draining the rinsing water while rotating the washing tub at a high speed for discharging the rinsing water which permeates through the clothing(S3), wherein the above steps are repeated by the preset number of times and the rotation.
Patent KR-20020060337-A (KR)
Title: The control method for fetching the washed laundry
Inventor: JANG GYEONG HWAN
IPC: D06F33/02
Filed: 2001-01-10
Abstract: PURPOSE: A method for controlling the withdrawing of clothing of a washing machine is provided to separate the clothing tangled together during the dehydration step by rotating either of the washing tub or a pulsator and stopping the rotation repeatedly. CONSTITUTION: In a method for controlling the withdrawing of clothing of a washing machine, when a washing tub stops rotating as dehydration stroke is finished(S3), a pulsator rotates right and left alternately to separate the clothing from the inner wall of the washing tub(S4). The separation of the clothing from the inner wall of the washing tub is further carried out by the steps of stopping the generation of driving force of a driving motor to rotate the washing tub by the inertia, and stopping the rotation of the washing tub due to the inertia suddenly and repeating the stopping.
Patent KR-20010070515-A (KR)
Title: Method and system for adaptive signal processing for an antenna array
Inventor: AIKEN RICHARD THOMAS
IPC: H01Q3/26
Filed: 2001-01-11
Abstract: PURPOSE: A method and a system for adaptive signal processing for an antenna array are provided to reduce processing resources related to the adaptive algorithm for an antenna array or processing time. CONSTITUTION: The system receives uplink electromagnetic signals from a phased array and uplink electromagnetic signals from a diversity array during the reception of a desired electromagnetic signal transmitted by a desired mobile station. The uplink signals are converted into baseband signals for digital signal processing. The baseband signals are observable as a series of successive time slots. The system determines uplink coarse combining weights associated with the uplink baseband signals of the phased array and downlink coarse combining weights associated with the downlink baseband signals of the phased array. The baseband uplink signals are summed into as few as one resultant baseband signal during or after application of the coarse combining weights to the baseband uplink signals. The system determines fine combining weights for one or more resultant baseband signals and the baseband uplink signals on a symbol-by-symbol basis, or on any duration basis less than a time slot, to combine the signals into a single enhanced baseband signal for symbol detection.
Patent KR-20010112045-A (KR)
Title: 취직정보제공시스템
IPC: G06Q50/00
Filed: 2001-01-18
Abstract: 채용희망기업에 있어서는, 보다 많은 취직희망자에 대하여 적성을 정확하게 판단할 수 있는 동시에, 취직희망자에 있어서는, 스스로의 적성이나 지향을 파악하여 채용희망기업에 대하여 행동을 취할 수 있는 취직정보제공시스템을 제공하는 것이다. 
     취직희망자에 대해서는 기업정보를 제공하고, 채용희망기업에 대해서는 개인정보를 제공하는 취직정보제공시스템으로서, 상기 취직희망자에 대하여, 자격 또는 전문적 기량에 관한 능력정보와, 학력 또는 직업경력에 관한 경력정보와, 지망업종, 지망직종, 희망기업규모, 또는 희망근무지에 관한 희망정보와, 설문형식에 의한 적성진단에 대한 회답정보를 입력시키는 것을 특징으로 하는 취직정보제공시스템이다.
Patent KR-20010078039-A (KR)
Title: Earphone
Inventor: YUN KWANG HO
IPC: H04R1/10
Filed: 2001-01-20
Abstract: PURPOSE: An earphone for handling an interval between a transmitter and a receiver is provided to keep and manage safely an earphone by handling an interval between a transmitter and a receiver. CONSTITUTION: An inlet and outlet portion A(11) and an inlet and outlet portion B(12) are formed at both sides of a case(1). A radio wave reception plate(14) is at an outer side of the case(1). A wiring reel(2) is formed around a fixing axis(13) of the case(1). A coil spring(3) is connected between the wiring reel(2) and the fixing axis(13). A folding portion(40) is fixed to an outer circumference of the wiring reel(2). The first wire(4) passes through the inlet and outlet portions A and B(11,12). A receiver(51) is formed at one side end of the first wire(4). A transceiver plug(52) is formed at the other side end of the first wire(4). A transmitter(61) is formed at the first wire(4) between the receiver(51) and the case(1). A permanent magnet(81) is attached to the inlet and outlet portion A(11) of the case(1). A metal plate(82) is attached to the transmitter(61). A projection(83) is formed at a predetermined position from the case(1).
Patent KR-20020065763-A (KR)
Title: Automatic power control apparatus in the disk drive
Inventor: JIN GYEONG BOK
IPC: G11B7/125
Filed: 2001-02-07
Abstract: PURPOSE: An automatic power controller of a disk drive is provided to reduce a stabilizing time of an initial automatic power control executing period of a laser diode by previously adding a predetermined voltage to an automatic power control circuit. CONSTITUTION: An automatic power controller of a disk drive includes a controlling part(303), an amplifying part(305), and an adding part. The controlling part generates reference voltage signal for automatic power control and stabilization compensating voltage signal corresponding to a selected mode. The amplifying part inputs sampling signals of recording areas of the reference voltage signal for automatic power control and a monitor signal for analyzing level of output power of the laser diode into input terminals, and amplifies a voltage difference between both input terminals into a predetermined gain. The adding part adds the output of the amplifying part and the stabilization compensating voltage signal and outputs the added signals to a laser diode driving circuit.
Patent KR-20010074082-A (KR)
Title: 24 / omitted
Inventor: KIM JEAN TAG
Filed: 2001-02-13
Abstract: PURPOSE: A system for the auction on/off-line service using the twenty-four hours convenience store is provided to remove the unnecessary cost, to promote the economic efficiency and the business security, and to build the distribution system of a sale commission. CONSTITUTION: The twenty-four hours convenience store is affiliated as an auction-broking partner linking with the Internet. An auctioneer selects the convenience store to use. The auctioneer registers the sale product to the auction. A web site operator consigns and keeps the registered product to the joint convenience store. The client bids for the product, which is registered on the auction, on the web site. The client pays for the auction product to the convenience store in the maximum price and purchases the product on the spot, or pays for the auction product in the highest bid price, purchases and makes over the product. The auctioneer receives the product price except the commission on the convenience store. The web site operator receives a part of the commission from the convenience store.
Patent KR-20010083216-A (KR)
Title: Color filter producing method and apparatus
Inventor: AKAHIRA MAKOTO
IPC: B41J3/407
Filed: 2001-02-21
Abstract: PURPOSE: To provide a method and a device for manufacturing a color filter capable of reducing generation of color mixing in manufacturing the color filter with an inkjet method. CONSTITUTION: The method of manufacturing for the color filter comprises relatively scanning an inkjet head with plural nozzles nearly arrayed in a first direction and a substrate to a second direction almost orthogonal to the first direction, ejecting inks from the inkjet head to the substrate and coloring filter elements adjacently aligned in the second direction so as to have respectively different colors. Prior to the coloring step, respective landing positions of the plural ejected inks to be ejected to the respective filter elements are measured. Based on the result of the measurement, the ejection timing for the respective plural nozzles is adjusted so as to make the plural ejected inks land on the center line of the first direction for the filter elements.
Patent KR-20020072072-A (KR)
Title: Enhanced digital sound amplifier circuit by using oscillation carrier signal
Inventor: KANG SIN JAE
IPC: H03G3/00
Filed: 2001-03-08
Abstract: PURPOSE: A circuit for improving a digital sound amplification efficiency by using an oscillation carrier signal is provided to drastically improve an efficiency of sound amplification and a reliability of products through a method to prevent its frequency from changing regardless of the size of sound output signal. CONSTITUTION: A circuit for improving a digital sound amplification efficiency by using an oscillation carrier signal includes a carrier signal oscillator(1) for continuously generating a carrier signal having a predetermined frequency during a supply of power, an input signal amplifier(2) for amplifying an analog sound signal inputted from external to a predetermined level, a digital modulator(3) for improving an efficiency of an output oscillation signal by integrating output signals from the input signal amplifier(2), comparing each other and modulating the result value into a digital carrier signal, a power MOSFET driver(4) for stably level modulating a carrier signal from the digital modulator(3) into a digital waveform having a stable pulse width modulation, a current amplifier(5) for amplifying the output signal of the PWM level modulator(4), a power MOSFET driver(6) for amplifying signal outputted from the current amplifier(5) through two channels, a low pass filter(7) for filtering a sound signal having a low frequency in the output signal of the power MOSFET driver(6) and outputting the filtered signal through the speaker(8).