baber/WOPTO huggingface dataset:
Patent KR-20010000954-A (KR)
Inventor: JANG CHERL HO
Filed: 2000-10-31
Abstract: PURPOSE: An apparatus and a method for compensation and electronic commerce for C2C(Customer to Customer) on the internet are provided to sell more amounts of products, by systematically managing the information related to the transaction between a buyer and a seller, and by supporting the money for buying the products with mileages. CONSTITUTION: A plurality of member computers(100,110,120) include a virtual shop. A web server(200) is connected to the internet and accessed by a member via a web browser. A member information database(300) stores the member information transmitted from the web server(200), and provides an authentication service. A my-shop database(400) manages the shops for a member and performs the compensation in response to the member information transmitted from the member information database(300).
Patent KR-20010008098-A (KR)
Inventor: KO JAE KWON
IPC: B29C47/00
Filed: 2000-11-08
Abstract: PURPOSE: A method for manufacturing a wire protecting tube is provided to enhance productivity and to keep high strength and low weight by foaming PVC(polyvinyl chloride) used as main raw material for manufacturing a wire protecting tube. CONSTITUTION: To manufacture a wire protecting tube, main raw material is used with a mixture of 78-92wt% of PVC, 2-0.7wt% of TLS(tribasic lead sulphate) and DBL(dibasic lead stearate), 3-1wt% of Pb-St and Ba-Ca, 1-0.5wt% of Ba-St, 4-2wt% of DOP(di octyl phthalate), 2-0.5wt% of AC-1000S, 2-5wt% of bony coal and 5-1.3wt% of pigment. The raw material flows through a single heating pipe and then through two extrusion molds. Therefore, the wire protecting tube is manufactured. The wire protecting tube is used to protect an electric wire or similar one for flowing electricity therethrough and to keep the appearance of a building excellent.
Patent KR-20020037813-A (KR)
Title: Method for manufacturing Nonvolatile Memory
Inventor: LEE DA SON
IPC: H01L21/8247
Filed: 2000-11-15
Abstract: PURPOSE: A method for fabricating a non-volatile memory(NVM) device is provided to reduce the size of the memory device by forming an NVM device of a vertical structure using two trenches, and to decrease the number of masks by forming the NVM device using a trench and a sidewall. CONSTITUTION: The first trench is formed on a substrate(1) of the first conductivity type. The second trench having a width narrower than that of the first trench is formed inside the first trench. An ion implantation process for controlling a threshold voltage is formed on the entire surface including the first and second trenches. The first insulation layer sidewall is formed on the sidewall of the first and second trenches. Impurity ions of the second conductivity type are implanted into the exposed surface of the substrate and the bottom surface of the first and second trenches so that a source/drain region(7) is formed. The second insulation layer is deposited on the substrate. A floating gate(9a) and a gate electrode are formed on the sidewall of the second insulation layer inside the first and second trenches, respectively. The third insulation layer is deposited on the substrate. A control gate(12a) is formed on the sidewall of the third insulation layer at a side surface of the first trench.
Patent KR-20010051705-A (KR)
Inventor: MOTOMURA GATHUMI
IPC: G03B17/00
Filed: 2000-11-15
Abstract: PURPOSE: A flash generating circuit is provided to reduce a cost and a size of a circuit substrate. CONSTITUTION: A primary wire(16_3a) of a trigger coil(16_3) inside a discharging loop(L1) is arranged with a light emitting pipe(16_1). Current is accumulated in a main condenser(13) and a condenser(16_2) for a trigger by boosting a voltage of an embedded battery(1) through a boosting circuit(11). The current is flowed to the primary wire(16_3a) by closing a trigger switch(15). The light emitting pipe(16_1) is emitted by the trigger voltage from a secondary wire(16_3b). Thereby, a cost and a size of a circuit substrate are reduced.
Patent KR-20020039202-A (KR)
Inventor: KIM SUN WOO
IPC: E04B2/76
Filed: 2000-11-20
Abstract: PURPOSE: A lightweight partition is provided to reduce vibration and noise transferred from the outside by using damping materials and to save materials required by wiring easily through a wiring passage of a stud. CONSTITUTION: The lightweight partition(1) comprises: many studs(2) containing flanges projected parallel to the same direction on both sides of a web extended longitudinally, wherein cable wiring passages pass through the web and a bead is projected on both longitudinal ends of the each flange; damping materials(3) formed in an elastic body, provided with an adhesive on both sides and attached to the outer side of each stud to absorb impact or vibration transferred to the stud; and a plate(4) fixed to the outer side of the damping materials(3) attached to both outer sides of each stud(2).
Patent KR-20020039478-A (KR)
Title: Apparatus for multi-tasking of serial eeprom
Inventor: KIM JIN YEOL
IPC: G11C16/10
Filed: 2000-11-21
Abstract: PURPOSE: A multi operation code processor of a serial EEPROM is provided, which memories a number of operation codes in one serial EEPROM, and outputs each operation code separately and selectively. CONSTITUTION: A counter(102) counts data bits being output in sequence from the first address from an output port(DO) of a serial EEPROM(101). The count result of the counter is inputted to a logic circuit(103) through the counter output port. Therefore, the logic circuit. The logic circuit performs a gating operation of passing or blocking output data of the serial EEPROM according to an output value of the counter output port. And this result(Dout) opens a gate at an interval where desired data is output, and closes the gate at other interval, and enables a multi operation using the serial EEPROM.
Patent KR-20020040096-A (KR)
Title: Dual board device and method of cellbus and block state
Inventor: KWAK BYEONG IK
IPC: H04L12/24
Filed: 2000-11-23
Abstract: PURPOSE: An apparatus and method for duplexing a cell bus and a block status board is provided to perform the stability of a system by independently controlling and switching blocks in a system board. CONSTITUTION: A master processor control unit(100) equipped in an active processor board(1000) checks the whole status of the processor board(1000) and outputs a relevant switching control signal to a master cell bus control unit(200) and a master cell bus clock control unit(300). The master cell bus control unit(200) controls cell buses and outputs status signals to the master processor control unit(100). The master cell bus clock control unit(300) provides clocks to cell buses. A slave processor control unit(400) equipped in a stand-by processor board(2000) outputs all sorts of control signals. A slave cell bus control unit(500) converts the master cell bus control unit(200) into stand-by status in case that a switching control signal is received from the master processor control unit(100) through the master cell bus control unit(200) in case that there's an error in the master cell bus control unit(200). A slave cell bus clock control unit(600) converts the master cell bus control unit(300) into stand-by status in case that a switching control signal is received from the master processor control unit(100) through the master cell bus clock control unit(300) in case that there's an error in master cell bus clock control unit(300).
Patent KR-20020040419-A (KR)
Title: Backup Apparatus of Surface Mounting Device
Inventor: AHN TAE SEONG
IPC: H05K13/04
Filed: 2000-11-24
Abstract: PURPOSE: A backup apparatus of a surface mounting apparatus is provided to adjust height of the apparatus and fix a backup pin with a fixing jig when a backup plate reaches a PCB(printed circuit board). CONSTITUTION: A backup apparatus of a surface mounting apparatus comprises a backup part(110) and a fixing jig(120). The backup part(110) is arranged at a base frame of a PCB transferring device for supporting a PCB transferred to a part mount position by the PCB transferring device. The fixing jig(120) is used for adjusting and fixing the height of the backup part(110). At one end of the backup part(110), a stationary shaft(111) is formed to be mounted at a top surface of a backup plate of the PCB transferring device. At the other end of the backup part(110), a backup pin(114) and a backup shaft(113) performs up/down reciprocation for adjusting the height to support the PCB.
Patent KR-20020041715-A (KR)
Title: Large Size LCD with High Brightness
Inventor: NOH BONG GYU
IPC: G02F1/1335
Filed: 2000-11-28
Abstract: PURPOSE: A large-screen liquid crystal display with high brightness is provided to increase the brightness of the screen of a liquid crystal display by reducing loss of lights in a light guide and to decrease manufacturing costs of the display by simplifying the structure of the light guide. CONSTITUTION: A liquid crystal display is constructed of a plurality of liquid crystal display panels. A plurality of light guide tubes are located in front of the liquid crystal display panels. A part of light that have passed through the liquid crystal display panels comes out through a non-display region using total reflection between a light guide(3) and an air layer.
Patent KR-20020041960-A (KR)
Title: Covering equipment of gate and floor blank
Inventor: PYO HA GEUN
IPC: B62D33/00
Filed: 2000-11-29
Abstract: PURPOSE: A device for covering a blank space between a gate and a floor is provided to rotate a cover arm with respect to pins by torsion springs to spread forward while contacting a middle gate, thereby covering the blank space and preventing the inserting of cargos into the gap. CONSTITUTION: A device for covering a blank space between a gate and a floor includes a floor mounting base(1) formed with two adjacent hinges(5,6) in the middle and hinges(7,8) at both ends, a blank cover arm(2) formed with pivots inserted to the hinges in the middle part of the base, cover-movement preventing torsion springs(3) mounted to both ends of the cover arm, and pins(4) penetrating the hinges at both ends of the base for mounting the cover arm to the base, wherein the black gap between a rear deck floor and a middle gate when the middle gate is opened and the spring is supported by the base at an end and the cover arm at the other end.
Patent KR-20020042311-A (KR)
Title: Capacitor of ferroelectric memory device improving a capacitance and method fabricating thereof
Inventor: LEE JUNG JAE
IPC: H01L27/105
Filed: 2000-11-30
Abstract: PURPOSE: A capacitor of a ferroelectric memory device capable of improving capacitance and a forming method thereof are provided to increase the capacitance in the same size by forming a lower electrode of a capacitor having more three-dimensional shape than a stack-type capacitor. CONSTITUTION: A capacitor of a ferroelectric memory device comprises an interlayer dielectric(100) for forming capacitor, buried contact plugs(102) connected to source regions on a substrate, lower electrodes(112) formed on the interlayer dielectric(100) for connecting to the buried contact plugs(102), a dielectric covering the lower electrodes(112) along a step coverage of the substrate, and an upper electrode forming on the dielectric. The lower electrodes(112) respectively further includes a stack-type first lower electrode pattern(104A) and a second lower electrode pattern(110A). At this point, the second lower electrode pattern(110A) having an opening in the center is formed from the inner surface of the first lower electrode pattern(104A) to the vertical direction, thereby the shape of the lower electrodes(112) is three-dimensional.
Patent KR-20020043019-A (KR)
Title: input circuit for semiconductor device
Inventor: PARK SEONG MAN
IPC: H03K19/0175
Filed: 2000-12-01
Abstract: PURPOSE: An input circuit of a semiconductor device is provided to stably sense an input signal by preventing coupling noise. CONSTITUTION: A reference signal source(Vref1) provides a reference signal. A static discharger(ESD) static-discharges the reference signal from the reference signal source(Vref1). A global reference signal generator(Vref2) adjusts a level of the static-discharged reference signal and outputs a global reference signal. A plurality of differential amplifiers(DA) differential-amplify input signals and local reference signals and outputs output signals corresponding to a sensed input signal. Local reference signal generators(Vref3,Vref4,Vref5,Vref6) receive the global reference signals to make local reference signals according to a corresponding locations and provide the local reference signals to a corresponding differential amplifiers(DA).
Patent KR-20020044930-A (KR)
Title: Engine Knock Control Apparatus
Inventor: BAE SEONG GWAN
IPC: F02P5/152
Filed: 2000-12-07
Abstract: PURPOSE: A device for controlling the knocking of an engine is provided to reduce the occurrence of knocking by predicting the occurrence of knocking and controlling ignition timing. CONSTITUTION: A device for controlling the knocking of an engine comprises an engine control unit(10), ignition driving units(TR1,TR2), a knocking detecting unit(22), a comparator(24), an ignition coil module(12), and ignition plugs(14). If a small explosion in an engine is detected by a knocking detecting element of the knocking detecting unit, a first high level signal is inputted to the comparator. A high level signal is applied to the engine control unit. The engine control unit predicts the occurrence of abnormal engine ignition and corrects the present ignition timing.
Patent KR-20020047650-A (KR)
Title: Grip Tip of Gripper for Component Having Different Shape in Surface Mount Device
Inventor: KIM DONG JUN
IPC: B25J15/04
Filed: 2000-12-13
Abstract: PURPOSE: A grip tip of a heterogeneous-shaped device gripper applied to a surface mounter is provided to improve the productivity by providing a grip tip supporting a heterogeneous-shaped device and easily removing it from the heterogeneous-shaped device gripper. CONSTITUTION: A piston is installed within a through hole(110a) formed on a holder(110) and risen or dropped by air flowed in/out through the through hole(110a). A movement unit(130) is moved horizontally by the piston. A plurality of tips(142a,142b) are provided with a concave zone and a convex zone in order to support a heterogeneous-shaped device more than at least 3 point. The grip tips(142a,142b) are respectively installed on the movement unit(130) by a wrench bolt(143). The movement unit(130) is comprised of movement blocks(131), guide shafts(132), and elastic members(133).
Patent KR-20020046820-A (KR)
Title: Pivot of wire clamp
Inventor: AHN GEUN SIK
IPC: H01L21/60
Filed: 2000-12-15
Abstract: PURPOSE: A wire clamp pivot is provided to control a moving torque of a lever corresponding to a requirement by controlling a pressure using a bolt. CONSTITUTION: A wire clamp pivot(66) comprises a bottom bracket(24) fixed on a first lever(16) using a pressurizing bolt(34), a negative screw formed in the lower portion of the first lever(16), a second lever(18) inserted between a cover bracket and the bottom bracket(24), a first hole formed in the first lever(16), a second hole formed in the bottom bracket(24), a third hole formed beneath the first hole, a fourth hole formed on the second hole, discs(54,55,56,57) respectively inserted into the holes, and two ruby balls(26,27) respectively inserted between the discs(54,55) and between the discs(56,57). At this point, the bottom bracket(24) is strongly fixed to the first lever(16) when strongly tightening the pressurizing bolt(34) and the bottom bracket(24) is weakly fixed to the first lever(16) when weakly tightening the pressurizing bolt(34).
Patent KR-20010062600-A (KR)
Inventor: JANG JUN HO
IPC: G08G1/095
Filed: 2000-12-21
Abstract: PURPOSE: An error detection device of LED(light emitting diode) signal light and an operation device of emergency light are provided to prevent traffic jam by automatically detecting error signal and operating emergency light in a traffic light in which power source supplied when AC(alternating current) power source unit is converted into DC(direct current) power source through total wave rectification unit and drives LED block unit. CONSTITUTION: A detection unit(50) detects operation of an LED block unit(40) through operation of a transistor according to the state of LED in a photo LED(43). In case of error, the transistor in the photo LED(43) doesn't operate, and a signal whose voltage is reduced through a resistance(R3) detects error detection signal of an outer output tab(J1) through a resistance(R4) in a drive tab(70) and drives gate tab of a field effect transistor(Q1) in the drive tab(70) to operate an AC emergency lamp unit(60).
Patent KR-20020039591-A (KR)
Title: self oscillating mixer using single transistor
Inventor: HYOUNG JU YUAN
IPC: H03L7/16
Filed: 2000-12-26
Abstract: PURPOSE: A self oscillating mixer using a single device is provided, which realizes a large integration and low power consumption and an ultra light weight of a semiconductor chip. CONSTITUTION: A signal input port(1) receives an input signal by being connected to the external of a frequency mixer. A gate input signal matching circuit(2) comprises passive devices like a micro strip line or RLC devices and mixes the inputted signal. A micro strip line coupler(3) couples only an input signal frequency and blocks a DC current inputted by an external circuit and thus removes a circuit interference. A micro strip line acts as an inductive resistor to supply a DC voltage stably and performs a feedback operation for a stable operation of a device. A micro strip line feedback stub and a micro strip line stub(7) are connected to a source port of a transistor(5) in parallel. And an output matching circuit(8) transmits an output signal. A drain current bias(9) comprises a micro strip line or RFC and a bypass capacitor to apply an operation bias of the transistor device and the output matching circuit. And the self oscillating mixer also comprises a micro strip line feedback stub.
Patent KR-20020054466-A (KR)
Title: Method for continuity check of ATM OAM
Inventor: PARK JEONG JIN
IPC: H04L12/28
Filed: 2000-12-28
Abstract: PURPOSE: A method for checking the continuity of an ATM(Asynchronous Transfer Mode) OAM(Operation And Maintenance) is provided to generate activation and deactivation cells setting continuity checking of virtual connection in ATM OAM function, and efficiently create a continuity cell and detect a continuity error in checking the continuity. CONSTITUTION: A list of continuity checking nodes is divided into a list of CC(Continuity Check) cell transmitting nodes and a list of CC cell receiving nodes(ST11). The received OAM cell is processed(ST12). A continuity checking of the OAM cell is performed(ST13). A CC cell or an OAM cell reporting LOC alarm is created according to the current state of state variables(ST14).
Patent KR-20020057142-A (KR)
Title: Ventilation hooded microwave oven
Inventor: KWON CHEOL HO
IPC: F24C7/02
Filed: 2000-12-30
Abstract: PURPOSE: A heating deviation of foodstuff by convection heating portion is prevented to obtain a good cooking state. CONSTITUTION: A microwave oven comprises a cavity to cook foodstuff. A side heater(120) is mounted at the side of the cavity and heats foodstuff in the cavity using a convection heat. An electromagnetic element is installed in near height to upper face of the cavity, and generates microwave.
Patent KR-20010032146-A (KR)
IPC: C12N15/86
Filed: 1998-11-17
Abstract: The invention concerns a method for reducing recombination phenomena among nucleic acids. It also concerns the use of said method for producing defective viruses not contaminated by replication particles. The invention further concerns novel viral constructs.
Patent KR-20010033554-A (KR)
Title: 강유전성 박막 증착 방법
IPC: H01L21/316
Filed: 1998-12-10
Abstract: 본 발명은 신규한 공정 절차에서 화학 증착에 의해 강유전성 박막을 제어된 결정핵생성 증착 방법에 관한 것으로써, 고밀도의 결정핵생성 영역은 제어가능하고 재현성 있는 거친 표면을 갖는 우수한 특성을 갖는 강유전성 박막을 제조하기 위해 소정의 방식으로 처리된 기판 부재의 사용에 의해, 표면의 화학적 특성이 합금의 형성에 의해 개조되는 화학적으로 개조된 기판 표면의 사용에 의해, 또는 증착을 시작하는 동안 다수의 결정핵생성 형성하기 위해 전구체를 가압하는 챔버 조건을 가짐으로써 달성된다.  표면 거칠기를 달성하기 위한 일반적인 기술은 반응성 이온 에칭, 불활성 이온 밀링, 및 화학 기계적 연마를 포함하는데, 이들 각각은 바닥 전극을 패턴화시키기 위해 사용될 수도 있다.  기판의 화학적 성질은 합금 증착, 후에 부분적으로 또는 완전하게 내부 확산되는 시이드층(seed layer)의 증착, 및 열처리 또는 열처리가 없는 이온 주입에 의해, 그리고 증착 이전에 화학 작용제에 표면을 예비 노출시킴으로써 표면의 화학적 성질을 변화시킴으로써 개조될 수도 있다.  그 결과 생성된 산화물 강유전성 박막은 캐패시터, 메모리 장치 등에 사용하기에 적합하다.
Patent KR-20010024827-A (KR)
IPC: G03F7/20
Filed: 1999-02-05
Abstract: 확대와 직교성의 보정을 수반하는 고정밀도 주사형 위치결정 시스템, 마이크로리소그래피 시스템과 같은 주사형 스테이지 장치는, 노광시에 등속으로 움직이는 조동 스테이지 상에 설치된 마스크 미동 스테이지와 플레이트 미동 스테이지를 갖는다.     플레이트의 노광시에 주사와 동일한 방향 또는 그 반대방향으로, 한쪽의 미동 스테이지를 다른 쪽의 미동 스테이지에 대해 움직임으로써 확대의 증감을 달성할 수 있다.     마찬가지로, 노광시에 한쪽의 미동 스테이지를 주사 방향에 수직으로 다른 쪽의 미동 스테이지에 대해 움직임으로써 직교성의 변경을 달성할 수 있고, 또 한쪽의 미동 스테이지를 다른 쪽의 스테이지에 대해 회전시킴으로써 임의의 회전 오차의 보정도 달성할 수 있다.     위치제어장치가, 미동 스테이지의, 다른 미동 스테이지에 대한 움직임를 제어함으로써, 스캐닝 위치결정 시스템은 확대와 직교성을 변경하면서 미동 스테이지 사이의 동기 오차를 보정하고, 정정시간을 단축하는 것을 동시에 행할 수 있다.
Patent KR-20010042136-A (KR)
Title: 치수적으로 안정한 부직 섬유 웹의 제조 방법 및 장치
IPC: D04H1/72
Filed: 1998-08-20
Abstract: 어닐링하는 동안 부직 웹을 텐터링하는 방법 및 장치.  열가소성 섬유의 부직 웹을 가장자리를 따라서 만이 아니라 웹의 내부를 가로질러 분포된 다수의 텐터링 점에서 텐터링 구조물에 구속한다.  부직 웹을 텐터링 구조물에 구속한 채로 어닐링하여 적어도 열고정 온도까지 치수적으로 안정한 부직 섬유 웹을 형성한다.  이어서 어닐링한 부직 섬유 웹을 텐터링 구조물에서 제거한다.  한 실시태양에서는, 텐터링 구조물이 어닐링 과정 동안 비평면 구조에서 부직 섬유 웹을 구속한다.  텐터링 구조물은 텐터링 지지대 말단으로 돌출한 다수의 텐터링 점들을 포함한다.  텐터링 점들은 웹의 내부와 맞물리도록 위치하여 어닐링 동안 웹을 구속한다.
Patent KR-20010034801-A (KR)
Title: 다층 보안 문서 적층용 필름
IPC: B32B27/32
Filed: 1999-03-30
Abstract: 본 발명은 배향된 폴리프로필렌 층 및 배향된 폴리프로필렌 층의 각 면 위에 하나 이상의 고밀도 폴리에틸렌 층을 갖고, 탈적층을 제거하기 위해 예비-약화된 지폐의 제조에 사용하기 위한 적층된 다층 필름 기재에 관한 것이다.  생성된 필름은 양호한 엠보싱성, 완전한 접힘 특징 및 그 밖의 특성을 나타내고, 위조가 어려워서 지폐 및 다른 보안 문서의 제조에 매우 적합하다.
Patent KR-20010024985-A (KR)
Title: Ｉｃ카드의 제조방법
IPC: G11C29/00
Filed: 1998-08-19
Abstract: IC카드의 신뢰성, 범용성을 향상시킬 수 있는 시험공정을 포함하는 IC카드의 제조방법이다.  웨이퍼 처리공정(100), 웨이퍼 검사공정(200), COB 조립공정(300), 플라스틱 카드에의 탑재공정(400), IC카드 제조처리 0차 발행공정(500), IC카드 검사공정(600), 1차 발행 처리공정(700), 2차 발행 처리공정(800)을 실행함으로써, 접촉형 IC카드를 완성시킬 수 있고, 특히 스텝 200의 웨이퍼 검사공정과, 스텝 500~800의 IC카드의 시험공정이 포함되고, 테스트된 칩을 탑재한 IC카드의 테스트방법이 채용되어 있다.
Patent KR-20010071330-A (KR)
Title: 폴리에틸렌 글리콜-폴리오르토에스테르, 폴리에틸렌글리콜-폴리오르토에스테르-폴리에틸렌 글리콜, 및폴리오르토에스테르-폴리에틸렌글리콜-폴리오르토에스테르 블록 공중합체
IPC: A61K9/51
Filed: 1999-05-28
Abstract: PEG-POE, PEG-POE-PEG, 및 POE-PEG-POE 블록 공중합체는 친수성 및 소수성 블록을 모두 가지고 있다.     그것들은 수용액 중 미셀을 형성함으로써, 그것들이 소수성 또는 불수용성 물질의 캡슐화 또는 가용해화하는데 적합하게 하고; 그것들은 또한 특히 POE 블록(들)이 α-히드록시기를 함유하는 하나 이상의 단위를 함유할 때, 활성제의 지속적 방출을 위한 생부식성 매트릭스를 형성한다.
Patent KR-20010078046-A (KR)
Title: Disk cartridge apparatus
Inventor: KUSUI YOSHIO
IPC: G11B17/046
Filed: 2001-01-22
Abstract: PURPOSE: To set the heights of switch detecting surfaces of a plurality of disk cartridges equal to one another with respect to a mode detection switch when the plurality of disk cartridges different in size and thickness are loaded in a driving device. CONSTITUTION: This device is provided with a cartridge 1 (12) having the disks of different diameters housed in cartridge casings different in size and thickness, an erroneous erasure prevention flag 44 (49), a cassette compartment 23 having a recording/reproducing part for performing recording and/or playing back for the disk, a detection switch 47 (52) for detecting an erroneous erasure preventing detection hole 45 (50), and a position reference part formed in the cassette compartment 23 for positioning and deciding the heights of the respective disk cartridges. When the disk cartridge 1 (12) is loaded in the cassette compartment 23, the heights of the switching detecting surfaces 46 (51) of the disk cartridges are set equal to one another with respect to the detection switch 47 (52).