baber/WOPTO huggingface dataset:
Patent KR-20040058552-A (KR)
Title: Bottom Blowing Equipment For Furnance
Inventor: AHN DONG SEOK
IPC: C21C5/46
Filed: 2002-12-27
Abstract: PURPOSE: An apparatus for bottom-blowing in converter is provided to increase bubbling in steel bath by blowing high pressure nitrogen downward in an upper blowing converter and improve reaction in the furnace by promoting decarburization reaction during blowing. CONSTITUTION: The apparatus comprises a plurality of thin tube bundle type nozzles(7) installed on a lower part of the converter with being spaced apart from each other in a certain distance in such a way that the nozzles are directed to the inside of the converter; a controller(8) for controlling type, pressure and flow rate of bottom blowing gas supplied from the lower part of the converter through the plurality of thin tube bundle type nozzles according to type of molten steel poured into the converter; a compressor part(2) comprising one or more of nitrogen compressors(21,22) installed on nitrogen gas line to produce high pressure nitrogen gas, an extra compressor(23) connected to nitrogen line and argon line respectively through switch valve to replace function of compressor broken down, and an argon gas compressor(24) installed on the argon gas line to produce high pressure argon gas; first and second gas holders(31,32) for respectively storing nitrogen and argon of high pressure produced from the compressor part; pneumatic control valves(41,44) respectively installed on gas pipes connected to a discharge side of the first and second gas holders to primarily control pressure of the high pressure nitrogen and argon gases according to control of the controller; pressure control valves(42,45) and cutout valves(43,46) installed on gas pipes connected to a rear part of the pneumatic control valves to finely control pressure of the primarily pressure controlled nitrogen and argon gases; a header(5) into which the nitrogen and argon gases supplied through the pressure control valves and the cutout valves are mixed and collected; a bottom blowing gas supply pipe for transferring a mixed gas collected into the header to the plurality of thin tube bundle type nozzles; flow rate measuring instruments(61,62) installed on the bottom blowing gas supply pipe to measure flow rate of the mixed gas applied to the plurality of thin tube bundle type nozzles; flow rate control valves(47,48) for controlling flow rate of gas applied to the plurality of nozzles by receiving control of the controller; and pressure meters(63,64) for measuring pressure of high pressure gas applied to the plurality of nozzles.
Patent KR-20040058752-A (KR)
Title: Method for forming of conduction line of semiconductor device
Inventor: LEE SEONG GWON
IPC: H01L21/28
Filed: 2002-12-27
Abstract: PURPOSE: A method for forming a conductive line of a semiconductor device is provided to be capable of preventing loss of a barrier layer at sidewalls of a contact hole. CONSTITUTION: An insulating layer(68) is formed on a plug(67). An opening part is formed to expose the plug by selectively etching the insulating layer. A metal barrier layer(71b) is formed on the opening part and a metal film(72b) as a bit line is filled in the opening part. A conductive pattern is formed by patterning the metal film. A hard mask(73b) is formed on the conductive pattern. An etch stop layer(75b) is formed at both sidewalls of the conductive pattern and the hard mask.
Patent KR-20040059338-A (KR)
Inventor: JUN JUN SEOK
IPC: G07B15/00
Filed: 2002-12-28
Abstract: PURPOSE: An electronic toll collection system is provided to detect a violation of traffic regulations by using only an OBU(On Board Unit) without an additional device. CONSTITUTION: An electronic toll collection system includes an OBU, a vehicle model classification unit, and a first wireless communication unit. The OBU compares a vehicle model detection result with the stored vehicle model information to detect a violation of traffic regulations, calculates toll charges, and indicates an impossible state of calculation of toll charges. The vehicle model classification unit detects the vehicle model through the first gentry by using a laser sensor. The first wireless communication unit(412) is connected to the OBU by using a wireless method. The first wireless communication unit transmits the vehicle model detection result of the vehicle model classification unit to the OBU.
Patent KR-20040059457-A (KR)
Title: Flash memory device having a circuit for compensating a threshold voltage of a lock flash cell
Inventor: KIM BYEONG ROK
IPC: G11C16/34
Filed: 2002-12-30
Abstract: PURPOSE: A flash memory device having a lock flash cell threshold voltage compensation circuit is provided to compensate a difference of a threshold voltage after an erase operation of a lock flash cell used in protecting data of a main flash cell and data of the main flash cell. CONSTITUTION: A main flash cell array(10) includes a plurality of flash memory cells. A plurality of sense amplifiers(30) amplify data stored in the flash memory cell and outputs it to a data bus. A lock flash cell array(20) includes a plurality of lock flash cells used to protect data stored in the main flash cell. A comparator(70) compares a voltage of a bit line connected to the selected main flash cell with a voltage of a bit line connected to the selected lock flash cell. A lock read control unit(40) determines the number of the selected lock flash cells according to the comparison result from the comparator. A lock bus control unit(50) outputs a voltage of the bit line connected to the selected lock flash cell selectively according to the comparison result from the comparator. And a lock sense amplifier(60) outputs a control signal controlling the main sense amplifier by sensing and amplifying the voltage transmitted from the lock bus control unit.
Patent KR-20020050289-A (KR)
IPC: B29C48/08
Filed: 2001-09-17
Abstract: 복수개의 두께조정수단을 구비한 다이를 이용해서 중합체를 압출하고, 성형해서 시트로 할 때, 상기 두께조정수단에 인가되는 조작량을 소정의 시계열패턴을 따라 변화시키는 동시에, 그 시트의 폭방향에 있어서의 두께분포를 측정한다. 얻어진 시트두께분포변동, 또는 시트두께분포변동의 표준시계열피턴과 두께분포측정값의 시계열패턴의 비교결과에 기초하여 두께조정수단과 두께측정위치의 대응관계를 신속하고, 정밀도좋게 결정한다.
Patent KR-20020066331-A (KR)
IPC: F25J1/00
Filed: 2000-12-12
Abstract: 본 발명은 메탄이 풍부한 가압 가스 스트림의 액화방법에 관한 것이다.  본 방법의 제1 단계에서, 바람직하게는 11,000kPa 이상의 압력에 있는 가압 공급 스트림의 제1 부분(13)을 회수하고, 저압으로 엔트로피적으로 팽창시켜(70) 회수된  제1 부분을 냉각시키고, 일부분 이상 액화시킨다.  공급 스트림의 제2 부분(12)을 팽창된 제1 부분(15)과 간접 열 교환시킴으로써 냉각시킨다.  그 다음, 제2 부분(17)을 저압으로 팽창시켜(72) 가스 스트림의 제2 부분(17)을 일부분 이상 액화시킨다.  액화된 제2 부분(37)을 -112℃의 온도와 압력이 이의 기포점 압력 이상인 가압 생성물 스트림으로서 공정으로부터 분리한다.
Patent KR-20030019337-A (KR)
Title: Method for the improvement of islet signaling in diabetes mellitus and for its prevention
IPC: A61K38/00
Filed: 2001-04-02
Abstract: The present invention discloses a method for therapeutically treating mammals, including but not limited to humans, to increase the relative insulin producing performance of endogenous pancreatic ²-cells and to cause differentiation of pancreatic epithelial cells into insulin producing ²-cells. Oral administration of a DP IV inhibitor causes the active form of GLP-1 to be preserved longer under physiological conditions. The extended presence of GLP-1, in particular in the pancreatic tissue facilitates differentiation and regeneration of the ²-cells already present that are in need of repair. These repaired insulin producing cells can contribute to the correction and maintenance of normal physiological glycemic levels.
Patent KR-20030019390-A (KR)
IPC: B60C23/04
Filed: 2002-02-22
Abstract: 본 발명은 림(2)에 장착되는 외부 캐스팅(3)을 포함하는 타이어에서의 압력을 조정하기 위한 시스템에 관한 것이다. 
     타이어는 림(2)의 저부에 배치되고 고압 공기 용기를 구성할 수 있는 내부 캐스팅(5), 팽창 목적을 위해 외부 캐스팅으로 공기를 흐르게 하는 제 1 액튜에이터(6), 외부 캐스팅(3)에 통합되고 수축 목적을 위해 공기를 외부로 빠지게 하는 제 2 액튜에이터(8), 액튜에이터(6,8)들중 하나 또는 다른 것으로 정보의 송신 및/또는 외부 캐스팅(3) 및/또는 내부 캐스팅(5)에서의 압력과 온도를 제어하기 위하여 검출기(7,9)들에 의하여 인도되는 정보를 수신할 수 있는 전자 조립체, 전자 조립체 및 키보드를 위한 제어 수단을 포함한다. 
     본 발명의 시스템은 차량에 적합하다.
Patent KR-20030007656-A (KR)
IPC: B32B27/30
Filed: 2001-05-23
Abstract: 본 발명은 열가소성 튜브에 관한 것으로서, 내부 불소수지층(12)과 상기 불소수지층에 결합된 외부 폴리아미드층(14)을 포함하며, 접착 촉진제(16)가 상기 층중의 적어도 하나에 포함되어 있으며, 상기 접착 촉진제는 상기 2개 층(12, 14)사이의 접착 결합강도를 증가시키는 작용을 하는 노블락 캐리어상의 1,8-디아자비시클로-[5,4,0]운데-7-센의 비치환 또는 치환 페놀 염이며, 접착 촉진제(16)는 상기 층의 압출 또는 적층과 조합된 기계적 접착에 부가하여 화학적으로 결합된 접착을 제공하는 것을 특징으로 한다.
Patent KR-20030016285-A (KR)
IPC: C22C45/10
Filed: 2001-06-11
Abstract: 비결정질질 금속 부품을 성형하는 제조공정을 성형 공정의 충전과 급냉 단계를 시간적으로 분리한다. 주형을 금속 합금이 높은 유동성을 가지는 성형 온도까지 가열한다. 합금은 성형 온도에서 주형을 채우게 되어, 이에 의해 합금이 주형의 공간을 충전될 수 있다. 그런 다음 주형과 금속을 함께  급냉하며, 이 급냉은 합금 내에서 결정화가 시작되기 전에 이루어진다. 이 에 의해 종래의 기술에 비하여 종횡비가 높은 비결정질질 금속 부품을 얻을 수 있다.
Patent KR-20040064746-A (KR)
Title: Dish washer
Inventor: ALEEXANDR NARBUT
IPC: A47L15/13
Filed: 2003-01-10
Abstract: PURPOSE: A dish washer is provided to prevent an injection hole from being clogged by installing an ultrasonic generator at a passage connecting a washing pump to the injection hole. CONSTITUTION: A dish washer is composed of a body, a washing tub installed in the body, a washing pump for pumping washing water, an injection hole(23a) for injecting washing water supplied from the washing pump into dishes, and an ultrasonic generator(30) installed at a passage connecting the washing pump to the injection hole. A dish basket is installed at the washing tub, and has a washing water pipe(21). The injection hole is formed at the washing water pipe.
Patent KR-20040067356-A (KR)
Inventor: JUN EUN JEONG
IPC: G08G1/0969
Filed: 2003-01-22
Abstract: PURPOSE: An apparatus and a method for providing vehicle moving position information are provided to increase applicability of a vehicle navigation system by enabling the vehicle navigation system and a mobile radio communication equipment to share the vehicle moving position information. CONSTITUTION: A vehicle navigation system(140) is provided with a telematics function. The vehicle navigation system communicates with a mobile radio communication equipment(150) and receives GPS(Global Positioning System) signals from a GPS satellite(130). A vehicle information center(110) manages the vehicle navigation system. The vehicle information center receives information containing vehicle moving position information from a contents provider(100) through a network of a communication company(120) to provide them to vehicle navigation system.
Patent KR-20040067605-A (KR)
Inventor: HONG TAE HEE
IPC: C07D311/62
Filed: 2003-01-24
Abstract: PURPOSE: A method for separating oligomeric proanthocyanidins from fruit extract is provided, thereby cheaply and rapidly separating oligomeric proanthocyanidins using cheap resin which is reusable. CONSTITUTION: The method for separating oligomeric proanthocyanidins from fruit extract comprises the steps of: pulverizing fruits; adding the pulverized fruits in a mixed solvent of water and ethanol, and stirring the mixture at 75 to 85 deg.C or sonicating the mixture at room temperature to prepare fruit extract; and suspending the fruit extract in a mixed solvent of water and ethanol, placing the suspension on an alkyl benzene polymer resin, and eluting oligomeric proanthocyanidins with 20% ethanol, 60% ethanol and 95% ethanol, sequentially, wherein the fruit is grape seed, grape skin, persimmon leaf or persimmon skin.
Patent KR-20040067701-A (KR)
Inventor: PARK JI HWANG
IPC: F28D15/02
Filed: 2003-01-24
Abstract: PURPOSE: A hybrid cooling device is provided to perform cooling operations by latent heat in a phase change and by ventilation and convection and to improve cooling efficiency by minimizing the loss of conduction heat transfer through fins by installing the cooling device between the fins. CONSTITUTION: A hybrid cooling device(100) for cooling heat from an external heat source is composed of a phase change cooler(112) having a phase-changeable circulating loop of refrigerants formed therein and a branch portion formed at the side of the loop and a fan(120) installed to the branch portion of the phase change cooler. The phase change cooler comprises an evaporating unit(104) formed at one end and filled with liquid refrigerant in at least a portion by a capillary phenomenon to vaporize the liquid refrigerant by heat transmitted from an external heat source; a vaporized refrigerant moving unit(106) adjacent to the evaporating unit and flowing the vaporized refrigerant toward the branch portion; a condensing unit(108) adjacent to the vaporizing refrigerant moving unit as at least a region of the branch portion and branched off into at least two parts to condense the vaporizing refrigerant into liquid; a liquid refrigerant moving unit(102) adjacent to the condensing unit as at least a region of the branch portion, insulating heat from the evaporating unit, and flowing the refrigerant condensed into liquid toward the evaporating unit; and a heat insulating unit for heat-insulating at least a portion of the liquid refrigerant moving unit and the evaporating unit.
Patent KR-20030071486-A (KR)
Title: 개량형 일부인
IPC: B41K3/04
Filed: 2003-01-25
Abstract: 본 발명은 일종의 개량(돌출면)형 일부인(日附印)에 관한 것으로서, 상기 일부인은 본체와 케이스로 구성되어 있으며, 본체 내에 180도 회전이 가능한 회전시트를 설치하고, 회전시트의 밑부분에 투공(透孔)을 구비한 평면대를 설치하며, 회전시트 내에 넘버링을 설치하고 또한 바퀴로 조정되는 날짜 벨트를 설치하고, 날짜 벨트에 최소한으로 축소한 숫자 및 날짜를 설치하고, 또한 회전시트의 평면대에 양측의 버튼으로 간단하게 회전시트를 떼어낼 수 있는 인면(印面)을 설치하며, 인면에 인장면을 부착 설치할 수 있고, 인면에 평면대의 투공과 대응하는 천공을 형성하며, 천공의 직경을 평면대 투공의 직경보다 작게 형성하여, 천공으로 날짜 벨트의 돌출된 구역을 제한하도록 함으로써, 잉크 패드를 따로 사용할 필요가 없는 일부인을 제공할 뿐만 아니라, 일부인이 구비하는 일정한 크기의 인면 면적 내에서, 천공의 축소로 날짜 벨트가 사용하는 공간을 최소한도로 줄임으로써, 나머지 공간으로 사용자가 필요로 하는 도안 또는 문자를 최대 면적에 발휘할 수 있도록 하고, 인면을 쉽게 조립할 수 있도록 한 상태에서, 여러 가지 다른 인면을 하나의 인장 손잡이로 공용할 수 있도록 함으로써, 편리성을 갖추고, 적용 범위가 넓으며 경제적인 효과도 매우 큰 일부인을 제공하고자 함에 요지가 있다.
Patent KR-20040068698-A (KR)
Inventor: KIM YUN GI
IPC: H04L12/66
Filed: 2003-01-27
Abstract: PURPOSE: A method for calculating the number of required lines of voice traffic and designing a packet level band in an IP network is provided to guarantee speech quality of a call by effectively managing band resources of a VoIP network system. CONSTITUTION: Packets inputted to an NAS(Network Access Server)(10) is classified into voice packets and data packets by a packet classifier(11) and then stored in a voice buffer(12) and a data buffer(13), respectively. An output link server of the NAS(10) visits the voice buffer(12). As long as there is a voice packet in the voice buffer(12), the server continuously processes the voice packet stored in the voice buffer(12). If there is no voice packet in the voice buffer(12), the server is moved to the data buffer(13), and if there is a data packet in the data buffer(13), the server provides one data packet for service. When the service at the data buffer(13) is terminated, the server searches the voice buffer(12) again and repeats the above-described operation.
Patent KR-20040069429-A (KR)
Inventor: JUNG BAEK GI
IPC: H05B6/68
Filed: 2003-01-29
Abstract: PURPOSE: A magnetron control circuit of a microwave oven is provided to improve the reliability of system by cutting off a control signal containing noises by using a noise sensor. CONSTITUTION: A magnetron control circuit of a microwave oven comprises an on-off relay(20) for controlling the operation of magnetrons(10); a switching unit(30) for switching an on-off operation of the relay; a micom(40) for outputting a control signal for driving the magnetrons; and a noise sensor(50) for detecting noises from the control signal outputted from the micom and cutting off the output of the control signal of the switching circuit if the control signal contains noises.
Patent KR-20040069498-A (KR)
Inventor: HAM HUI HYEOK
IPC: H04L12/14
Filed: 2003-01-29
Abstract: PURPOSE: A method for processing a GPRS(General Packet Radio Service) call in a WCDMA system is provided to provide a pre-paid mobile phone service in a mobile telephone network using a GPRS. CONSTITUTION: A SGSN receives an activate create packet data protocol context request message(ActivatePDCPContextRequest), transmits a create PDP context request message(CreatePDPContextRequest) to a GGSN and normally receives a create PDP context response message(CreatePDPContentResponse)(S100-S102). When a pre-set PDP contents establish positive response trigger condition is satisfied, the SGSN transmits a message(InitialDPGPRS) to an SCP(S103). The SCP transmits a request report event message(RequestReportEventGPRS) to the SGSN(S104). The SCP re-transmits an apply charge message(ApplyChargingGPRS)(S105). The SCP transmits a continue proceeding message(ContinueGPRS) to the SGSN(S106). The SGSN transmits a PDP context accept message(ActivePDPContexAccept) to an origination MS(S107). The SGSN transmits an apply charge report message(ApplyChargingReportGPRS) to the SCP(S108). The SCP transmits an apply charge message(ApplyCharging GPRS) to the SGSN(S109). The SGSN transmits an event report message(EventReportGPRS) to the SCP(S110,S111). The SGSN transmits an apply charge report message(ApplyChargingReportGPRS) to the SCP(S112). The SGSN transmits a delete PDP context request message(DeletePDPContextRequest) message(S113) to the GGSN(S113). When the SGSN normally receives a delete PDP context response message(DeletePDPContextResponse)(S114), it transmits a deactivate PDP context accept message(DeactivatePDPContextAccept) to the origination MS(S115).
Patent KR-20040069550-A (KR)
Inventor: HA GYEONG SU
IPC: G02F1/1335
Filed: 2003-01-29
Abstract: PURPOSE: A transflective LCD(Liquid Crystal Display) is provided to obtain high contrast form both of a transmission part and a reflecting part. CONSTITUTION: A transflective LCD includes the first substrate(400) on which a plurality of pixels including a transmission part(D) and a reflecting part(B) are defined, a lower polarizer film(410) formed under the first substrate, and a reflection electrode(402) formed on the first substrate corresponding to the reflecting part. The LCD further includes a transparent electrode(406) formed on the first substrate corresponding to the transmission part, and a liquid crystal layer(412) formed on the first substrate including the reflection electrode and transparent electrode. The LCD also has the second substrate(300) placed on the liquid crystal layer, a phase retardation film(302) formed on a reflecting part of the second substrate opposite to the first substrate, a color filter(304) formed between the liquid crystal layer and second substrate, and an upper polarizer film(408) formed on the second substrate.
Patent KR-20030067540-A (KR)
Inventor: CHOI BYEUNG SUB
IPC: H04W4/02
Filed: 2003-02-06
Abstract: PURPOSE: A system for supplying and advertising real-time subway position information is provided to easily supply position information of subways through various mobile communication terminals or display devices, and to output position and advertisement information in turns through external display devices, thereby increasing advertising effects by focusing users' attention to advertisements. CONSTITUTION: A subway complex information system(10) has various information on all subways. Subway position information service systems(20,20') receive position information of the subways. A web server(30) transmits the position information of the subways to various terminals. The first DB(60) and the second DB(70) store various data on the position information of the subways. An advertising agency system(80) provides advertising information. A control system(100) transmits the advertising information to a display device(110). The display device(110) and a display device(110') display the advertising information. An advertising DB(120) stores the advertising information.
Patent KR-20040072886-A (KR)
Inventor: PARK HUI RA
IPC: H04B7/26
Filed: 2003-02-11
Abstract: PURPOSE: A method for controlling a video data transfer bit rate of a mobile communication system is provided to control quantization by comparing estimated cell generation quantity with service capacity of a base station, thereby reducing load of a terminal and efficiently manage a whole network by the base station. CONSTITUTION: An MPEG(Moving Picture Experts Group) data transfer bit rate between a base station and a terminal is set up to transmit MPEG data at the set MPEG data transfer bit rate(SP1,SP2). MPEG traffic are classified by frame types(SP3). Multiplexed traffic distribution is estimated by applying the frame bit quantity to an AR(Autogressive) model(SP4,SP5). Transfer bit quantity of data is calculated to be compared with service capacity(SP6,SP7). If the transfer bit quantity exceeds the service capacity, a quantization level is lowered to reduce a transfer bit rate, and the MPEG data is transmitted at the reduced transfer bit rate(SP8,SP9). If not, the MPEG data is transmitted at the transfer bit rate previously set(SP10).
Patent KR-20040074800-A (KR)
Title: Composition for diagnosis of polycystic ovary syndrome comprising primers detecting single nucleotide polymorphism at 677th nucleotide of 5,10-methylenetetrahydrofolate reductase gene
Inventor: CHA GWANG RYEOL
IPC: C12Q1/68
Filed: 2003-02-19
Abstract: PURPOSE: A composition for diagnosis of polycystic ovary syndrome comprising primers detecting single nucleotide polymorphism at 677th nucleotide of 5,10-methylenetetrahydrofolate reductase gene is provided, thereby improving accuracy of diagnosis of polycystic ovary syndrome. CONSTITUTION: The composition for diagnosis of polycystic ovary syndrome comprises primers detecting single nucleotide polymorphism at 677th nucleotide of 5,10-methylenetetrahydrofolate reductase(MTHFR) gene, wherein the primers contain a sense primer having the nucleotide sequence set forth in SEQ ID NO:1 or SEQ ID NO:3 and an antisense primer having the nucleotide sequence set forth in SEQ ID NO:2 or SEQ ID NO:4; the primers further contain a sequence primer for pyrosequencing having the nucleotide sequence set forth in SEQ ID NO:5; the single nucleotide polymorphism at 677th nucleotide of MTHFR gene is selected from cytosine/cytosine(C/C), cytosine/thymine(C/T) and thymine/thymine(T/T).
Patent KR-20030070850-A (KR)
Title: 디지털 정보 매체를 이용하는 향상된 내비게이션 시스템
IPC: H04N21/858
Filed: 2003-02-26
Abstract: 본 발명은 종래의 DVD-비디오에 새로운 내비게이션 기능을 부가하는 것에 관한 것이다. 플레이어 유닛은 DVD-비디오 디스크로부터 비디오 콘텐츠 또는 이 비디오 콘텐츠의 콘텐츠(메뉴, 챕터)와 관련된 AV 콘텐츠 및 ENAV 콘텐츠를 포함한 기록된 콘텐츠를 재생한다. DVD 디스크의 비디오 콘텐츠는 비디오 재생 엔진에 의해 재생된다. DVD 디스크의 ENAV 콘텐츠는 ENAV 엔진에 의해 재생된다. ENAV 엔진은 ENAV 콘텐츠의 재생을 제어하고, 또한 ENAV 콘텐츠의 재생된 콘텐츠에 따라 서로 연휴, 연동 및/또는 동기하여 비디오 콘텐츠의 재생을 제어한다.
Patent KR-20030031518-A (KR)
Inventor: HWANG KYO KWANG
IPC: G01P5/00
Filed: 2003-02-28
Abstract: PURPOSE: A method for measuring ultrasonic flow rate in a small-diameter tube utilizing cylindrical piezoelectric vibrators is provided to measure flow rate of fluid flowing through a tube by sending an ultrasonic wave generated by the radial vibration of cylindrical piezoelectric vibrators to the wall of the tube and receiving the signal at the wall of the tube. CONSTITUTION: A signal sound transmitted to the wall of a tube(1) is transmitted to both the upstream and downstream of fluid. The flow rate of the fluid is measured based on the difference between the upstream transmission time and the downstream transmission time. Cylindrical piezoelectric vibrators(2,3) for receiving and transmitting an ultrasonic wave are provided in a number of two or three or more on the outer wall of the tube(1).
Patent KR-20040077336-A (KR)
Inventor: KIM BYEONG JIN
IPC: G11B7/004
Filed: 2003-02-28
Abstract: PURPOSE: A method for managing data streams of a high-density optical disk is provided to record/manage navigation information which can identify a type of video data linked with play items, according to each play item. CONSTITUTION: Data streams such as movie video/audio data, still picture data are recorded as MPEG2 TSs(Transport Streams). Plural play items are included in a playlist for playing/controlling the data streams. The first and second play items(PlayItem 1,2) are linked with still picture/audio data blocks, respectively. The third play item(PlayItem 3) is linked with a movie video/audio data block. The fourth play item(PlayItem 4) is linked with a still picture/audio data block. Navigation information is included/recorded in each play item, or MS condition information is included/recorded within the playlist.