baber/WOPTO huggingface dataset:
Patent KR-20000034252-A (KR)
Title: Non-real time type video on demand system
Inventor: WON SEOK JIN
IPC: H04N21/2387
Filed: 1998-11-28
Abstract: PURPOSE: A non-real time type video on demand system is provided to receive service though a terminal isn't connected to a VOD(Video On demand) server by utilizing stored program and added information in demand. CONSTITUTION: A non-real time type video on demand system comprises a network, a VOD server(100), and a terminal(300). The VOD server(100) constructs required program information and added information into an MHEG(Multimedia and Hypermedia Information Coding Experts Group) document to present it to the network. The terminal(300) stores the program information and the added information constructed into the MHEG document and then processes it on the basis of prescribed scenario if receiving the program information and the added information.
Patent KR-19990045694-A (KR)
Title: 데이터 기록 매체 및 데이터 재생 장치
IPC: G09F27/00
Filed: 1998-11-28
Abstract: 한 내용물의 재생완료점에서 메뉴로 자동 복귀하게 하고 한 내용물의 재생 동안 다음 혹은 이전 내용물로 임의로 점프하게 하는 데이터 기록 매체 및 데이터 재생 장치가 제공된다.  가라오케와 같은 음악기기용 DVD의 전체 디스크는 단일 프로그램 체인(PGC)로 구성되고 곡들은 셀로 분할된다.  곡 선택 메뉴로 점프하라는 명령은 각 셀의 셀 코맨드(셀 CMD)에 기입된다.  곡의 정상재생 완료시, 셀 코맨드가 수행되어 동작은 곡 선택 메뉴로 점프한다.
Patent KR-20000038265-A (KR)
Title: Method for controlling power-saving operation of air conditioner
Inventor: LEE SEUNG KWON
IPC: F24F11/00
Filed: 1998-12-04
Abstract: PURPOSE: A method for controlling power-saving operation of an air conditioner is provided to improve the power-saving operation of an air conditioner by effectively controlling the operation state of a compressor with variable on and off periods. CONSTITUTION: A method for controlling power-saving operation of an air conditioner includes the steps of determining whether a power-saving operation is selected or not according to tuning on or off of a power-saving operation switch(S201), determining whether a current room temperature is higher than a preset reference temperature or not if the power-saving operation is selected(S202), decreasing the current room temperature by controlling an operation of a compressor with an on-off period in which an off-period is longer than an on-period(S203), while increasing the current room temperature by controlling the operation of the compressor with an on-off period in which the on-period is longer than the off-period(S205), performing a normal power-saving operation for maintaining the room temperature equal to or 1°C higher than the reference temperature(S207,S206) if the current room temperature reaches the preset reference temperature(S204).
Patent KR-20000039324-A (KR)
Title: Coupling structure of suction silencer of hermetic electric compressor
Inventor: SUH MU HONG
IPC: F04B39/00
Filed: 1998-12-12
Abstract: PURPOSE: A coupling structure of a suction silencer of a hermetic electric compressor is provided to simplify the assembly procedure and improve the sealing state by forming coupling parts on upper and lower cases and inserting a sealing element between the cases, improving the appearance of the coupling surfaces and reducing the noise, thereby improving the reliability. CONSTITUTION: A coupling structure of a suction silencer of a hermetic electric compressor includes an upper case(30) in a predetermined shape formed with a plurality of first coupling parts(30b) at contact surfaces, a lower case(40) formed with a plurality of second coupling parts(40b) to be coupled with the first coupling parts and forming a cavity chamber and a resonant chamber inside when coupled with the upper case, and a sealing element at contact surfaces inserted between contact surfaces of the upper case and the lower case for sealing the inside space between the upper and lower cases, wherein the first coupling parts are protrudedly formed in the shape of hook and the second coupling parts are formed in the shape of groove or vice versa.
Patent KR-19990063037-A (KR)
Title: 낚시용 스피닝 릴
IPC: A01K89/01
Filed: 1998-12-14
Abstract: 낚시용 스피닝 릴에 있어서 낚시줄 안내장치의 중량감소와 로터의 회전밸런스의 균형화를 도모하고, 낚시 조작과 휴대운반을 용이하게 한다.  낚시용 스피닝 릴의 로터(1)에 설치한 베일(3), 낚시줄 유도부(4) 및 낚시줄 안내부(6)로 이루어지는 낚시안내부재(2)중 베일(3) 또는 베일(3)과 낚시줄 유도부(4)의 쌍방을 판재로서 중공형상으로 감아 형성하고, 이 중공형상부내에는 필요에 따라 강도보강용 또는 이물 침입방지용 끼움부재(11)를 충전장착하여, 낚시줄 안내부재(2)의 경량화를 도모함과 동시에 로터(1)의 회전밸런스의 조정도 용이하게 행하게 되도록 한다.
Patent KR-20000041148-A (KR)
Title: Device for processing wireless channel reservation in digital enhanced cordless telecommunication(detc) system
Inventor: LEE GAP YEONG
IPC: H04W72/10
Filed: 1998-12-21
Abstract: PURPOSE: A device for processing a wireless channel reservation in a digital enhanced cordless telecommunication(DECT) system, is provided for a terminal of high preference to immediately communicate through a reserved channel, by granting a preference to a specific terminal according to a speech priority and reserving a channel, when originating in a specific base station. And the device enables to communication without condition unrelated to a reserved channel in call incoming to a specific base station. CONSTITUTION: A digital enhanced cordless telecommunication(DECT) system comprises the devices as follows. Burst mode controllers(BMCs,270-1/270-n) collect transmitted adaptive differential pulse code modulation(ADPCM) data according to a DECT character with a time division multiple access(TDMA) system to transmit the data to respective base stations(110-1/110-n) with a radio frequency(RF) through a predetermined time slot. Also, the BMCs transceive voice data received from the respective base station with ADPCM data. A controller(220) transceives system and control data. A memory(240) stores a program for processing an operation of an entire system, and temporarily stores data generated according to an operation of a corresponding program. A voice signal processor(210) transceives a pulse code modulation(PCM) voice signal with the system, converts the PCM voice signal into ADPCM, and removes an echo in a voice. A clock generator(280) generates a clock for operating the BMCs, and adapts synchronization between corresponding BMCs. Interface devices(290-1/290-n) transmit DECT control data equal to a radio frequency(RF) and voice data transmitted to base stations. A device for processing a wireless channel reservation in the DECT system, comprises the devices as follows. A priority database(250) stores priority information granted by corresponding base stations(110-1/110-n) for every terminal registered in the system. A BMC database(260) stores information on terminals having priority in every cell. And priority processor(230). The BMC database(260) processes priority terminals.
Patent KR-20000041194-A (KR)
Title: Installation device and method of working range of telescopic handler
Inventor: HWANG JUN HA
IPC: E04H12/34
Filed: 1998-12-22
Abstract: PURPOSE: Installation device and method of working range of telescopic handler is provided to offer a variety of separated working modes and set critical values by working environment. CONSTITUTION: Installation device and method of working range of telescopic handler comprises; a gyration-sensing part(22) perceiving gyration of all direction; an out trigger-sensing part perceiving the contraction and extension of an out trigger; a load-sensing part(26) perceiving the load on telescopic handler; a control device(28) where working variables which are applied to the working mode on gyration of all direction and contraction and extension of an out trigger, and load chart on critical value of maximum load to each working mode are inputted; a warning part(30) which gives the alarm when perceived maximum load from each warning mode exceeds the critical value.
Patent KR-20000041356-A (KR)
Title: Magnet combination for cathode ray tube
Inventor: CHO YONG WON
IPC: H01J29/76
Filed: 1998-12-22
Abstract: PURPOSE: A magnet combination for cathode ray tube is provided to improve the image quality of the cathode ray tube by enabling to adjust the fine convergence of R and B color. CONSTITUTION: A magnet combination(28) for cathode ray tube includes: a dipole part(32) and a four pole part(36) comprising a pair of ring magnets; a first six pole part(34) having 70 Gauss; and a pair of second six pole part(38) whose magnetization amount is lower in 10-30 percent than the magnet(Mt) of the first six pole part. The magnet combination can control an electron beam by converging each of side beams by adding one more six poles part in the CPM.
Patent KR-20000041754-A (KR)
Title: Method for operating safely under residual fire in gas boiler
Inventor: KIM CHANG YEON
IPC: F24H9/20
Filed: 1998-12-23
Abstract: PURPOSE: A method for operating safely under residual fire in gas boiler is provided to prevent racing of a gas boiler by detecting a water level as being in low level upon lack of water in a duct of a gas boiler with a sensor for detecting low water level positioned in the duct, detecting a temperature of hot water with a first thermistor at an outlet port of heating water and a second thermistor at an inlet port of heating water flowing back, determining abnormal overheating condition, and then controlling the boiler to be ignited or extinguished. CONSTITUTION: A method for operating safely under residual fire in gas boiler comprises the following steps: a step for applying power source to a system of gas boiler(S10); a step for detecting whether water level is low or not with a sensor for detecting low water level(S12); a step for stopping combustion operation by carrying out an abnormal mode, if the water level is detected as low from a detection of water level, but operating a circulating pump circulating hot water in the duct, if not so(S14); a step for identifying whether the circulating pump is operated or not based on a response signal regarding to the operation of the circulating pump(S16); a step for carrying out the abnormal mode, if the response signal is abnormal operation, but, if not so, detecting the revolution frequency of the circulating pump and then determining whether the normal revolution frequency of the circulating pump is maintained in a constant time period(S18); a step for carrying out the abnormal mode, if the revolution frequency of the circulating pump is abnormal, but, if not so, turning on an ignitor and igniting to the burner(S20); a step for detecting whether a flame load which detects whether the burner is fired or not is turned on or not(S22); a step for measuring the variation of temperature difference(delta T) between a temperature at an outlet port of hot water and a temperature at an inlet port of hot water flowing back with a first and a second thermistors(S24); a step for detecting whether the temperature difference is kept in an equilibrium state during the fixed number of times within a predetermined time period or not(S26); and a step for stopping the combustion operation, if the temperature difference is decided as not being in an equilibrium state from the detection, but carrying out normal combustion operation(S28), if the temperature difference is in an equilibrium state.
Patent KR-20000045012-A (KR)
Title: Apparatus for detecting connected status of optical fiber maintaining and operating system
Inventor: JANG EUN SANG
IPC: H04B10/07
Filed: 1998-12-30
Abstract: PURPOSE: An apparatus for detecting a connected status is provided to update a database and to automatically supply information on added items or deleted items to a user, by managing an information signal column for dividing each port as a table to detect whether the information signal column comes from an input terminal or other terminals, so that the user can know changed items of the connect information in an optical fiber maintaining/operating system. CONSTITUTION: An optical fiber maintaining/operating system detects information on a connected status of an optical fiber between optical communication facilities in a central office. An apparatus for detecting the connected status in the optical fiber maintaining/operating system comprises a connect information input circuit(410), a connect information transmitter(420), and a connect information detector(430). The connect information input circuit has many output ports. The connect information input circuit outputs connect information signals through the output ports. The connect information signals are for connected statuses of a transmission device and an optical fiber. First and second port selection controlling signals applied from outside designate the output ports. The connect information transmitter has many input ports, and receives the connect information signals through the input ports. The input ports are designated by the first/the second port selection controlling signals. The connect information transmitter transmits the connect information signals. The connect information detectors detects the connect information signals among signals output from the connect information transmitter. The connect information detector outputs the connect information signals.
Patent KR-20000045929-A (KR)
Title: Method for monitoring chemical and mechanical polishing process using test pattern
Inventor: PARK RAE HAK
IPC: H01L21/302
Filed: 1998-12-30
Abstract: PURPOSE: A method for monitoring CMP(Chemical and mechanical polishing) process using a test pattern is to measure a degree of over-polishing during the CMP process, thereby enhancing the reliability of the monitoring. CONSTITUTION: A method for monitoring CMP process using a test pattern comprises the steps of: forming an interconnection(33) at a cell region(CA2) on a substrate(31) having the cell region and a test pattern region(TA2); forming an insulating layer(35) covering the interconnection on the substrate; patterning the insulating layer to form a connection passage(37) to expose the interconnection at the cell region and forming a first pattern(39) and a second pattern(41-1,...,41-n) having a width smaller than the first pattern; depositing a conductive layer(43) such that the connection passage is filled and the first and second pattern are covered; and chemical and mechanical polishing the deposited conductive layer such that the conductive layer filled in the connection passage remains and a part of the second pattern which is adjacent to the first pattern is exposed.
Patent KR-19990028743-A (KR)
Title: 그래픽 이미지와 비디오 이미지 동시 표시 방법 및 장치
IPC: H04N9/74
Filed: 1997-04-30
Abstract: 그래픽 이미지(23)(예를 들어, 텔레비전 수상기 또는 비디오 레코더의 제어 메뉴)와 비디오 이미지(22)를 동시에 표시하는 방법 및 장치가 기재되었다.  숨어 있는 비디오 신호를 전부 이해할 필요 없이 최적의 메뉴 읽기를 이루기 위해 그래픽 이미지는 윈도우 내에 수용되고 윈도우에는 비디오 이미지와 부가적으로 혼합되는 적절한 컬러가 주어진다.  혼합 계수는 윈도우 내에 있는 비디오 신호의 공간적 및/또는 일시적 액티비티 양에 응답해서 양호하게 제어된다.
Patent KR-19990044417-A (KR)
Title: 필터 조립체 제조 방법 및 그에 의해 제조된 필터 조립체
IPC: B01D46/52
Filed: 1996-08-28
Abstract: 본 발명은 필터 프레임 부재(402)를 가지는 필터 조립체 제조 방법 및 그에 의해 제조된 필터 조립체(500)를 제공한다. 그 방법은 한쌍의 지지 부재(102 및 204)를 사용하여 필터 매개체(202)를 완전히 지지하는 단계를 구비한다. 지지 부재(102 및 204)는 필터 매개체를 정위치에 고정시키며 필터 매개체(202)의 부분을 매개체의 주변부 둘레에 노출될 수 있게 한다. 다음에, 필터 지지 프레임(402)은 노출된 필터 매개체에 근접하여 그 둘레에 배치된다. 필터 지지 프레임(402)은 이후에 필터 매개체의 노출된 부분에 대하여 완전히 초음파적으로 용접된다. 일단 용접되면, 주름이 형성된 필터 조립체는 지지 부재(102 및 204)로부터 제거된다.
Patent KR-19990064271-A (KR)
IPC: B29C48/03
Filed: 1996-10-18
Abstract: PCT No. PCT/EP96/04549 Sec. 371 Date Jun. 16, 1998 Sec. 102(e) Date Jun. 16, 1998 PCT Filed Oct. 18, 1996 PCT Pub. No. WO97/14739 PCT Pub. Date Apr. 24, 1997The invention relates to polymers which form cholesteric phases, to a process for their preparation and to their use. Novel polymers and oligomers which form cholesteric phases essentially consist, as molecular building blocks, of A. at least one bifunctional chiral molecular building block which contains at least one cyclic structural element other than a monosubstituted p-phenylene group, B. at least one bifunctional achiral or racemic molecular building block which contains at least one cyclic structural element containing at least four ring members, and C. at least one bifunctional molecular building block which can be either chiral or achiral, cyclic or acyclic, and is different from the molecular building blocks A and B actually employed, with the proviso that the molecular building block A is not derived exclusively from camphoric acid.
Patent KR-19990071575-A (KR)
Title: 셋-톱 전자장비 및 네트워크 인터페이스 유닛 배열
IPC: H04N5/00
Filed: 1996-11-21
Abstract: 셋-톱 전자장치 및 네트워크 인터페이스 유닛 배열은 가정에서의 디바이스를 상호 연결하는 내부 디지털 네트워크에 연결된다.  유락 서비스는 외부 네트워크 및 내부 네트워크에 커플된 네트워크 인터페이스 유닛을 통해 네트워크를 이입된다.  네트워크 인터페이스 유닛은 내, 외부 네트워크간 필요한 인터페이스를 수행하고, 내부 네트워크에 연결된 모든 터미널에 이용가능한 유락서비스를 만든다. 네트워크 인터페이스 유닛과 분리된 셋-톱 전자장치는 내부 네트워크로 연결되며, 화면표시를 위해 예를들어 텔레비젼에 의해 디지털 데이터 스트림에서 정보를 변환한다.
Patent KR-19990071593-A (KR)
Title: Composition based on fish oil
Inventor: CAIN FREDERICK WILLIAM
IPC: A23L33/12
Filed: 1996-11-12
Abstract: PCT No. PCT/EP96/05025 Sec. 371 Date May 26, 1998 Sec. 102(e) Date May 26, 1998 PCT Filed Nov. 12, 1996 PCT Pub. No. WO97/19601 PCT Pub. Date Jun. 5, 1997Fish oil concentrates, having: </=40% of long chain poly unsaturated fatty acids <20% of saturated fatty acids (C14-C18) <15% oleic acid <12% C16:1-fatty acid and with a weight-ratio: can be obtained by a process involving the following steps subjecting a fish oil to an enzymic conversion removing free fatty acids or esters from conversion-product subjecting product of above to enzymic hydrolysis, using specific lipase or partial glyceride-specific lipase wash and dry product re-esterify dried product.
Patent KR-19990082081-A (KR)
Title: 전자 모듈을 스프레이 냉각하는 장치 및 방법
IPC: F25D1/02
Filed: 1997-01-24
Abstract: 본 장치는 제1 층(12) 및 제1 층(12)에 대향하는 제2 층(14)을 가지는 판(10)을 포함한다.  제2 층(14)은 제1 기판을 포함한다.  유체 분배 분기관(28)은 제1 층(12)의 근처에 위치한다.  구멍(36)을 가지는 노즐 하우징(30)은 제1 유체 분배 분기관(28)에 위치한다.
Patent KR-19990082656-A (KR)
Title: 전자 장치 및 텔레비전용 원격 제어 장치
IPC: H04N5/445
Filed: 1997-11-10
Abstract: 스크린 지향 전자 장치용 사용자 인터페이스는 회전 선택 메뉴를 포함한다.  선택 메뉴들은 스크린 상에서 회전하면서 고정된 위치를 지나갈 때마다 하이라이트 되어 선택할 수 있게 된다.
Patent KR-19990087277-A (KR)
Title: 회분의 비활성화 방법
IPC: C04B18/10
Filed: 1997-02-18
Abstract: 인산과 알카리 금속 인산염에서 선택한 반응물을 회분에 첨가하고, 여기서 얻은 인산염-함유 혼합물을 물 및 수경 결합체와 반죽하여 수경 모르타르를 형성시키고, 모르타르를 응결과 경화시키는, 회분의 비활성화 방법.
Patent KR-20000064707-A (KR)
Title: 투과형스크린
IPC: G03B21/62
Filed: 1998-01-20
Abstract: 본 발명은, 까칠까칠함이 없고, 광택감이 충실하게 재현되며, 콘트라스트가 양호하고 샤프한 느낌이 있는 영상을 주는 투과형 스크린을 제공한다.  본 발명에 따른 투과형 스크린(10)은, 광의 집광 또는 확산 등의 광학적 기능을 갖춘 렌티큘러 렌즈(11a)가 형성된 렌티큘러 렌즈 시트(11)를 구비하고, 그 렌티큘러 렌즈 시트(11)의 출광측의 표면에, 그 표면거칠기(Ra)가 0㎛≤Ra≤0.40㎛로 되도록 평활화된 투명 평활층(12)이 설치되어 있다.
Patent KR-20000065187-A (KR)
Title: 휴대형 수신장치
IPC: H04W88/02
Filed: 1998-03-03
Abstract: 본 발명은 스트랩안테나를 갖는 휴대형 수신장치에 관한 것이다. 
     본 발명의 스트랩안테나(106)를 갖는 휴대형 수신장치는 케이스체(100)와, 그 측부에 그 외주형상에 따라서 스트랩안테나(106)를 삽통하는 관통공을 적어도 1개 설치한다.    또 스트랩안테나(106)는 관통공을 통해서 케이스체(100)의 외측에 루프형으로 노출된 부위를 갖고, 또 스트랩안테나(100)로부터의 수신신호를 신호처리하는 수신신호처리수단과, 스트랩안테나(100)를 수신신호처리수단에 접속하는 접속수단(106)과를 설치한다.    또한 스트랩안테나(106)의 노출된 부위의 길이를 조절하는 스트랩안테나길이조절수단(109)을 설치한다.    이것에 의해 간이한 구성 및 조작에 의해 스트랩안테나(106)의 루프길이를 조절할 수 있다.
Patent KR-20000011014-A (KR)
Title: Manufacturing process of 1,4-butanediol, gamma-butyrolactone and tetrahydrofuran from di-(c1 to c4) maleate.
Inventor: HILES ANDREW GEORGE
IPC: C07D315/00
Filed: 1997-05-12
Abstract: PURPOSE: A process for the production of butane-1,4-diol, gamma-butyrolactone and tetrahydrofuran is simplified and downs the cost. CONSTITUTION: A process for the production of at least one C4 compound among butane-1,4-diol, gamma-butyrolactone and tetrahydrofuran, including the step of hydrogenation a di-(C1 to C4 alkyl) maleate with a particulate ester hydrogenation catalyst comprises: contacting a vaporous stream containing maleic anhydride vapor, water vapor, and carbon oxides in an absorption zone with a high boiling organic solvent having a boiling point at atmospheric pressure at least about 30°C higher than that of the di-(C1 to C4 alkyl) maleate; recovering a waste gas stream; reacting maleic anhydride in an esterification zone with a C1 to C4 alkaneol; recovering a solution of the di-(C1 to C4 alkyl) maleate; contacting the vaporous stream comprising hydrogen and di-(C1 to C4 alkyl) maleate under ester hydrogenation conditions with a heterogeneous ester hydrogenation catalyst; recovering from the hydrogenation zone a product stream containing at least one C4 compound.
Patent KR-20000016360-A (KR)
Title: Analysis method for gases and apparatus therefor
Inventor: WU SHANG-QIAN
IPC: G01N21/39
Filed: 1998-04-08
Abstract: PURPOSE: A gas analysis method and apparatus therefor are provided, which can exactly analysis with high sensibility by real time. CONSTITUTION: The method for analyzing an impurity in a gas comprises the steps of:introducing a gas with an impurity into a first cell (2); introducing a gas with no impurity into a second cell (3); maintaining identical pressures in the first and second cells; irradiating a light from a light irradiating means (1); splitting the light by a splitting means (4) in order to pass a first beam trough the first cell and to pass a second beam through the second cell; measuring the intensity of the light passing through the first cell by a first measuring means (5) and the intensity of the light passing through the second cell by a second measuring means (6); and determining an absorption spectrum of the impurity in the gas based on the difference between measuring data from the first measuring means and measuring data from the second measuring means.
Patent KR-20000016819-A (KR)
Title: Data transmission
Inventor: HERON ANDREW PETER
IPC: H04N19/89
Filed: 1997-06-19
Abstract: PURPOSE: A system is provided for the transmission of data representing a video image and for transmission over an analogue transmission link. CONSTITUTION: A transmitter having means to encode an input signal to form coded data, each element of said coded data having one of at least two discrete signal magnitude levels, the encoding means including in the coded data a periodic training sequence of data; and a receiver to receive the coded data and, on the basis of the received training sequence, to adapt a threshold or thresholds to allow the discrete levels to be distinguishable from each other are comprised. The receiver is continually allowed to adapt the threshold(s) in dependence on the dynamic conditions of the transmission link between the transmitter and receiver. The training sequence comprises at least two elements, the receiver including means to monitor the effect of at least one of the elements of the training sequence on another of said elements of the training sequence and adapt the threshold(s) accordingly. The receiver generates a look-up-table to store the adapted thresholds.
Patent KR-20000051065-A (KR)
Inventor: MIN KYONG SIK
IPC: G11C5/14
Filed: 1999-01-18
Abstract: PURPOSE: An over drive circuit of a semiconductor memory is provided to over-drive while raising maximum area efficiency in a small interaction region by driving a sense amplifier at a power supply voltage level and a drive voltage level by a single driving unit. CONSTITUTION: A memory cell array (1) stores a data. A sense amplifier array (2) amplifier and outputs information of the memory cell (1). A sub-word driving unit (30) drives a sub-word line. A voltage applying unit (4) applies a voltage to the sense amplifier array (2) to be driven. An applied voltage selecting unit (100) selectively applies a power supply voltage or a driving voltage to the voltage applying unit (4). The applied voltage selecting unit (100) includes a PMOS transistor (PM1) for receiving a high voltage at its source, an NMOS transistor (NM3) being serially connected with the PMOS transistor (PM1), receiving the driving voltage at its source and over-drive signal at its gate, an NMOS transistor (NM1) for receiving the power supply voltage at its drain, having a gate connected with a common contacting point of the two transistors (NM3, PM1) and a source being connected with the voltage applying unit (4).and an NMOS transistor (NM2) having a drain to which the driving voltage is applied, a gate to which the over-drive signal is applied and a source commonly connected with the source of the NMOS transistor (NM1).