baber/WOPTO huggingface dataset:
Patent KR-20000025119-A (KR)
Title: Dry etching apparatus for manufacturing semiconductor device
Inventor: LEE YOUNG CHEOL
IPC: H01L21/306
Filed: 1998-10-08
Abstract: PURPOSE: An apparatus is provided to enhance the manufacture productivity by minimizing a change of a vacuum state of a chamber due to a polymer and to enhance manufacturing reliability by minimizing an occurrence of particles. CONSTITUTION: Baffles(30) has arranged plural slits in a radial direction according to the circumferential direction to drain gas remaining a chamber and reaction byproducts down the chamber, a cross-sectional shape of each slit in a width wise direction is formed with a upward tapered shape up to a certain height from the bottom of the baffles(30) and also formed with a downward tapered shape up to an upper surface of the baffles(30) from the certain height. A pressure gauge is disposed over the chamber. the number of the slits is at least more than 45.
Patent KR-20000025904-A (KR)
Title: Device for automatically controlling volume of arrival announcing device in elevator
Inventor: CHOI IN GYU
IPC: B66B3/00
Filed: 1998-10-15
Abstract: PURPOSE: A device for automatically controlling volume of a device of announcing an arrival in an elevator is provided to reduce a noise of operation of the elevator at night after selecting the time control of a timer and distinguishing daytime and night time. CONSTITUTION: An automatic device of controlling volume is composed of a timer for enabling a user to control and select the operation time of a circuit by regular time unit, a first relay for outputting the regular sound of a chime bell when a face is up and down and a second relay for leading the contact of the timer at night and outputting the initial output of the chime bell sound by connecting to the chime bell through a regular variable resistance. If a relay for the night is operated, power is supplied to the chime bell through the relay and variable resistance. Herein, the chime bell outputs a sound smaller than the chime bell sound output at night as mush as passing through the variable resistance since a circuit loop is formed if a cage up or down signal relay is operated.
Patent KR-19990037192-A (KR)
Title: 산화철 적색 안료, 산화철 적색 안료의 제조 방법 및 그의 용도
IPC: C09D7/12
Filed: 1998-10-19
Abstract: 본 발명은 산화철 적색 안료, 산화철 황색 안료 또는 산화철 흑색 안료의 하소에 의한 산화철 적색 안료의 제조 방법, 및 그의 용도에 관한 것이다.
Patent KR-20000026588-A (KR)
Title: Semiconductor device having contact holes and method for manufacturing the same
Inventor: KIM GYU CHEOL
IPC: H01L21/28
Filed: 1998-10-21
Abstract: PURPOSE: A semiconductor device having contact holes is provided to easily achieve filling of the contact hole and reduce a contact resistance by using the contact hole having different width. CONSTITUTION: A semiconductor device includes a contact hole for exposing a conductive region(105) of a semiconductor substrate(102) through a first, a second and a third insulators(112,114,116). The contact hole further includes a first hole(118a) having vertical side wall profile via the first insulator(112), a second hole(118b) having slopped side wall profile via the second insulator(114), wherein upper width is wider than a lower width and the lower width is same as the width of the first hole(118a), and a third hole(118c) having vertical side wall profile via the third insulator(116), wherein the width of the third hole(118c) is same to the upper width of the second hole(118b).
Patent KR-20000027797-A (KR)
Title: Mos transistor of electrostatic discharge protection circuit
Inventor: YOU SEUNG JONG
IPC: H01L27/04
Filed: 1998-10-29
Abstract: PURPOSE: A MOS transistor of ESD(electrostatic discharge) is provided to improve tolerance of ESD by connecting Vss to outermost gate electrode using finger-type NMOS. CONSTITUTION: A finger-type NMOS transistor is arranged by electrode structure of gate(21)/drain(25)/gate(21)/ source(23)/gate(21)... without an outermost source electrode(23). An internal circuit(27) is connected to the gate electrodes(21). The outermost gate electrode(21) is grounded to Vss. Thereby, over-current applied to the outermost gate electrode(21) is dispersed by total gate electrodes, so that a rupture of gate oxide is prevented and the tolerance of ESD is increased.
Patent KR-20000031077-A (KR)
Title: Automatic switching device mounted in hinge of flip type mobile phone
Inventor: LEE JAE GAB
IPC: H04B1/38
Filed: 1998-11-03
Abstract: PURPOSE: An automatic switching device mounted in hinge of flip type mobile phone is provided to reduce costs and strongly resist to drop or impulse, and to minimize dead space. CONSTITUTION: An automatic switching device mounted in hinge of flip type mobile phone comprises a hinge assembly, a switching assembly(5) and an ON/OFF operator. The hinge assembly comprise a hinge housing(1), a hinge shaft(2) coupled to a flip cover to be rotated, a hinge cam(3) engaged with the hinge shaft to be linearly moved, a hinge spring(4) contacted to the cam, and a hinge cover(6) locked to the hinge housing. The switching assembly switches into a conversation mode or a standby mode in response to the opening/closing of the flip and is mounted on the hinge cover to be connected to a main board assembly. The ON/OFF operator turns the switching assembly ON/OFF.
Patent KR-20000031207-A (KR)
Title: Flat image display
Inventor: LEE SANG ROK
IPC: H01J29/46
Filed: 1998-11-04
Abstract: PURPOSE: A flat image display is provided to depress the dispersion of an electron beam by locating a shadow mask in front of an anode screen, and to improve the light efficiency by forming a metal foil on a fluorescent plate of the anode screen. CONSTITUTION: A flat image display include a board plate(not shown) with an anode emitting an electron beam, an anode screen(22) with an R, G, B patterned fluorescent plate formed by the collis ion of the electron beam with the anode screen, a magnetic plate(23), and a shadow mask(21). The magnetic plate with plural first beam holes(23a) is located against the anode screen. The shadow mask includes plural second beam holes(21a) for the electron beam to land on the fluorescent plate and is implemented between the magnetic plate and the anode screen.
Patent KR-20000031716-A (KR)
Title: Method for preventing full state of gateway buffer in ipc network
Inventor: MUN KANG YOUNG
IPC: H04L12/28
Filed: 1998-11-09
Abstract: PURPOSE: A method for preventing a full state of a gateway buffer in an IPC(Inter Processor Communication) network is provided to control a message transmission by using a queuing level of a gateway buffer. CONSTITUTION: A method for preventing a full state of a gateway buffer in an IPC(Inter Processor Communication) network comprises the steps of a process for transmitting a message to an IPC bus within a group, a process for reporting a determination signal to each processor within the group, and a process for permitting a message transmission to other group. The transmitting process is to transmit a stored message to a gateway link or the IPC bus after storing the received message in message units in a buffer. The reporting process is to report a signal for determining a message transmission stop or a message transmission permission to each processor. The permitting process is to stop or permit the transmission according to the message transmission stop or permission signal.
Patent KR-20000037667-A (KR)
Title: Method for displaying default value in television set
Inventor: SONG BOK CHEON
IPC: H04N5/44
Filed: 1998-12-01
Abstract: PURPOSE: A method for displaying default value in television set is provided to store adjustment value for test in each step of process line to simplify the acknowledgement. CONSTITUTION: A method for displaying default value in television set includes four steps. At the first step(S102), default values for each specification is stored. At the second step, the data store at the first step is accessed(S104) when an inspector generates an acknowledgement request and the accessed data is displayed in an OSD(on screen display) text(S106). At the third step(S107), the acknowledgement is terminated when the inspector generates an "OK" key signal, or the acknowledgement is performed on when the inspector generates a require signal. At the forth step(S110), the default value is of the third step is stored and the second step is performed.
Patent KR-19990024080-A (KR)
Title: 전기장을 이용한 유기성 폐자원중 이온의 연속식 제거방법
Filed: 1998-12-02
Abstract: 본 발명은 음식물 쓰레기, 하수 슬러지와 같은 유기성 폐자원 속에 포함되어 있는 중금속, 염분과 같은 유해 이온들을 연속적으로 제거하는 방법에 관한 것이다. 전극을 이용하여 유기성 폐자원 내의 전해질에 직류 전류를 흘려주어 유기성 폐자원 내에 포함되어 있는 이온중에서 직류전극의 (＋)극에는 음이온, 직류전극의 (-)극에는 양이온이 모인다. 양극과 음극에 모인 이온들을 용액상태로 포집하여 배출시켜 연속적으로 제거하는 방법을 제공하며, 유해한 이온들이 제거된 음식쓰레기나 슬러지 등의 유기물은 퇴비나 사료로 재활용할 수 있다. 
     본 발명은 1998년 6월 10일 특허출원한 전기장을 이용한 음식물 쓰레기내의 염분 제거방법(한국특허 출원번호 98-21575호)을 기본으로 하여 본 발명의 국내우선권 주장으로 특허출원 한다.  본 발명은 인용된 특허출원 98-21575호에 비하여 음식쓰레기중의 염분뿐만 아니라 하수슬러지 중의 중금속과 같은 금속이온을 연속적으로 제거할 수 있는 장점을 제공한다.
Patent KR-20000037929-A (KR)
Title: Novel antioxidant and process for producing the same
Inventor: YURI SHERMOLOBEECH
IPC: C07C321/24
Filed: 1998-12-03
Abstract: PURPOSE: An antioxidant is provided which has high antioxidation activity, low discoloration property and can be produced at lower price. CONSTITUTION: A antioxidant is produced by the following steps: (a) reacting phenol and olefin having C3-C13 in the presence of an acid catalyst at 85-90°C; (b) reacting the alkylated phenol having C9-C45 obtained from (a), a monomercaptan having C5-C15, a formaldehyde, and a dialkylamine as a catalyst at 55-150°C. The molar ratio of phenol, olefin, monomercaptan, and formaldehyde ranges from 1:0.5:0.5:0.5 to 1:2.5:2.5:5.0 and the total amount of the olefin and the monomercaptan ranges from 1.0 mol to 5.0 mol based on the phenol of 1 mol.
Patent KR-20000040458-A (KR)
Title: Isolation region formation of semiconductor substrate
Inventor: JEONG SANG MU
IPC: H01L21/76
Filed: 1998-12-18
Abstract: PURPOSE: A method of forming an isolation region of a semiconductor substrate is provided in order that a gap filling may be obtained easily through rounding the semiconductor substrate where is on the top corner in an active region, when forming the isolation films by using the trench of profiled groove isolation structure. CONSTITUTION: A method of forming an isolation region of a semiconductor substrate contains the following steps: a step to form the first and the second dielectric layers on the semiconductor substrate; a step to remove the second dielectric layer of an isolation region by defining the isolation films; a step to form an oxide layers by oxidizing the first dielectric layers in the isolation region; a step to form a side wall spacers on the sides of the second dielectric layers in the isolation region; a step to form a trench by etching the oxide layer and the semiconductor substrate in the isolation region, and to remove the side wall spacers; and a step to form the third dielectric layers on the surface of the semiconductor substrate which the trench has been formed thereon.
Patent KR-20000041141-A (KR)
Title: Manufacturing method of semiconductor device
Inventor: HAN GWANG HUI
IPC: H01L21/28
Filed: 1998-12-21
Abstract: PURPOSE: A method is to suppress the effect of thermal electron by forming a low concentration area of a resistor element only on one side of a source/drain, thereby increasing the current driving ability and operation speed of a transistor. CONSTITUTION: A method comprises the steps of: sequentially depositing an oxide film and a nitride film on a semiconductor substrate(11); dry-etching a part of the nitride film by photo etching process, followed by wet-etching a part of the oxide film; forming a gate oxide film(14) on the semiconductor substrate on which the oxide film is etched and exposed; planarizing until the nitride film is exposed, after depositing a gate electrode material(15) on the structure on which the gate oxide film is formed; forming a gate by patterning the gate electrode material and the gate oxide film through the photo etching process; sequentially removing the nitride film and the oxide film; and implanting a high-concentration impurity ion in the semiconductor substrate in which the oxide film is removed, to form a source/drain(16).
Patent KR-20000044259-A (KR)
Title: Location origination dedicated device by using mobile communication base station system
Inventor: KIM BOK GI
IPC: H04B7/26
Filed: 1998-12-30
Abstract: PURPOSE: A location origination dedicated device by using a mobile communication base station system, is provided to trace a location of a device possessor having a peculiar identifier(ID), by using a mobile communication base station. CONSTITUTION: A location origination dedicated device is for registering location information in a mobile communication base station system. And the device by using a mobile communication base station system, comprises a transmission circuit(30), a central processing unit(CPU,10) and a power supply circuit(28). The transmission circuit(30) wirelessly transmits a peculiar number of a predetermined output device to a mobile communication frequency band which is previously set up. The CPU(10) performs mapping of a peculiar number of a corresponding device, control the peculiar number of the device in every predetermined cycle to be output, and control power of the transmission circuit. And the power supply circuit(28) supplies power demanded by every circuit of the location origination dedicated device.
Patent KR-20000047120-A (KR)
Title: Apparatus for ejecting unit of shelf for communicating device
Inventor: CHO GTU WON
IPC: H05K7/14
Filed: 1998-12-31
Abstract: PURPOSE: An apparatus for ejecting a unit of a shelf for a communicating device is to easily eject a unit on a shelf of a rack using a single ejecting button, thereby improving a productivity and a safety of a product. CONSTITUTION: An apparatus for ejecting a unit of shelf for a communicating device comprises a single ejecting button(52) which is inserted from a mounting position of a guiding rail(18) into an upper or lower front face of a shelf(10), an operating bar(60) which is integrally connected to an inner end of the ejecting button and linearly moved by a pressing operation of the ejecting button, a sub operating bar(70) which is bent upward or downward from a place of the operating bar and then bent again in parallel with the operating bar to be connected to an inner side of the shelf, a pushing piece(80) which is integrally connected from an inner end of each of the operating bar and the sub operating bar, an elastic member(90) which is interposed between the pushing piece and a back plane to elastically move the eject button, the operating bar and the sub operating bar, and an ejecting piece(100) of which one end is fixed to one side of the pushing piece and a middle portion is rotatably coupled to a bracket(82) and the other end is always contacted to a rear end of a circuit board(22) composing a unit(20).
Patent KR-19990044605-A (KR)
Title: 메모리 카드 커넥터
IPC: H05K5/02
Filed: 1996-09-05
Abstract: 메모리 카드 커넥터는 적층된 프레임(60, 80)을 포함하고 프레임은 프레임의 측벽(64, 84; 66, 86)으로부터 외방으로 연장하는 마운팅 브라켓트(68a-68d, 80a-80d; 70a, 70b; 90a, 90b) 및 마운팅 브라켓트들을 수취하여 프레임(60, 80)을 서로 고정시키고 아울러 프레임을 베이스에 장착시키는 개구(126a-128d, 128a-128d; 166a, 166b; 168a, 168b)를 가진다.
Patent KR-19990063973-A (KR)
IPC: C12M1/40
Filed: 1996-10-07
Abstract: PCT No. PCT/SE96/01266 Sec. 371 Date Apr. 6, 1998 Sec. 102(e) Date Apr. 6, 1998 PCT Filed Oct. 7, 1996 PCT Pub. No. WO97/12525 PCT Pub. Date Apr. 10, 1997A process for the preparation of nutritionally valuable products from cereals by means of an enzymatic degradation of the starch present in the cereals is provided. Gelatinization and degradation of the starch to soluble dextrines and their continued degradation to more simple oligosaccharides is carried out in a single step. Additionally, a plant for carrying out the process is provided.
Patent KR-19990067212-A (KR)
IPC: C09K5/04
Filed: 1996-10-21
Abstract: An azeotrope-like composition comprising: (A) 1,1,1,2-tetrafluoroethane and (B) n-pentane: also described is a heat transfer device comprising the azeotrope-like composition.
Patent KR-19990071524-A (KR)
Title: 살충 화합물, 이의 제조방법 및 이를 함유하는 조성물
IPC: C07C43/176
Filed: 1996-11-19
Abstract: 본 발명은 하기 화학식(I)의 화합물, 이의 광학 활성 이성체 또는 이의 염에 관한 것이다.  본 발명의 화학식(I)의 화합물은 살충제, 바람직하게는 절지동물 구제 조성물의 활성성분, 및 절지동물 구제 활성 성분의 상승 작용제로서 적용될 수 있다: 
     
       
     
     상기 식에서, 
     Ar은 임의로 하나 이상의 알콕시, 메틸렌디옥시, 알킬, 할로겐, 할로알킬 또는 니트로 그룹으로 치환되고/거나, 벤젠 고리로 축합된 지환족, 방향족 또는 하나 이상의 헤테로원자 함유 헤테로고리 잔기를 나타내고, 
     R 1 , R 2 는 독립적으로 수소, 알킬, 알케닐, 할로알킬, 페닐, 치환된 페닐, 또는 시클로알킬을 나타내며, 
     R 3 , R 4 는 독립적으로 수소, 알킬, 알케닐, 할로알킬, 페닐, 치환된 페닐, 또는 시클로알킬을 나타내거나, R 3 , R 4 는 함께 =O이고, 
     Y는 C, 또는 =PO이거나, YR 3 R 4 는 함께 
       을 형성하고, 
     X는 -O-; -NR 10 -이며; 
     R 9 는 수소, 알킬, 페닐, 또는 치환된 페닐이고; 
     R 10 은 수소, 또는 알킬이며; 
     R 5 , R 6 , R 7 , R 8 은 독립적으로 수소, 알킬, 알케닐, 또는 할로알킬이거나, 
     Ar-(CR 1 R 2 ) m -(YR 3 R 4 ) n -X-는 함께 카르복스이미드 그룹을 형성하고; 
     E는 수소 , 할로겐, 또는 메틸이며; 
     m은 0, 1, 또는 2이고; 
     n은 0, 또는 1이며; 
     o는 0, 1, 또는 2이고; 
     p는 0, 1, 또는 2이며; 
     단, 브릿지 -(CR 1 R 2 ) m -(CR 3 R 4 ) n -X-(CR 5 R 6 ) o -(CR 7 R 8 ) p 의 그룹 또는 원자의 합은 3이고 -C=C-E 골격과 브릿지의 원자는 바람직하게는 메틸 그룹으로 종결되는 6원자로 구성된 선형 쇄를 형성하며; 
     또한, Ar이 나프틸 그룹이면, Y는 C-원자를 의미하고, X는 O-원자를 의미하며, R 3 및 R 4 는 함께 =O를 형성할 수 없다.
Patent KR-19990076597-A (KR)
Title: 삼층체, 폴리올레핀계 중합체의 성형체 및 이들의 제조방법
IPC: B29C41/18
Filed: 1996-12-26
Abstract: 본 발명은 염화비닐계 수지의 층 (제 1 층), 염화비닐계 수지와 복소동적점도 (η * ) 가 1.2×10 5 포이즈 이하인 올레핀계 중합체를 함유하는 조성물의 층 (제 3 층) 및, 제 1 층과 제 3 층 사이에 존재하는 염화비닐계 수지의 발포층 (제 2 층) 으로 이루어지고,  단,  제 3 층이 택일적으로 한쪽으로 팽창된 것일 수 있는, 삼층체;  분말성형에 의한 상기 삼층체의 제조방법;  폴리올레핀계 중합체로 이루어진 기재와 그 표면에 첩합된 제 1 항에 기재된 삼층체로 이루어진 표피재로 구성된 성형체;  성형체의 제조방법에 관한 것이다.
Patent KR-19990082490-A (KR)
Title: 웨이퍼 본딩에 의해 달성된 다른 결정 방향을 가지는 비선형 광도파관
IPC: G02B6/12
Filed: 1997-01-22
Abstract: 도파관(10)은 다른 결정 방향의 교번 지역(18, 12)을 가지며, 그것에 의해 비선형 주파수 전환을 위한 퀘이시 위상 매칭을 제공하는데, 에피텍셜층을 가지는 두 개의 웨이퍼는 다른, 바람직하게 반대의 결정 방향을 가지고 서로 본딩된다.  하나의 웨이퍼는 에칭되고, 격자는 한부분의 격자가 한 웨이퍼의 방향을 가지며 다른 부분이 다른 웨이퍼 방향을 가지도록 에칭된다.  그후, 도파관 구조는 도파관이 축 방향에 다른 방향이도록 다른 방향의 템플레이트상에 에피텍셜적으로 증착된다.  그것에 의해, 퀘이시 위상 매칭 비선형 효과가 달성된다.
Patent KR-20000011009-A (KR)
Title: Goods having painted metal film and production method thereof
Inventor: GORODETSKY RARISA
IPC: B05D1/04
Filed: 1997-05-15
Abstract: PURPOSE: An electric gilded film and its production method are provided to be generated by selecting various colors and shades of the printed films as a process variable, and by using a same bath and a same electrolyte solution. CONSTITUTION: The goods having the painted metal film is produced by: coloring on a gloss or on a non-gloss nickel as a ground plate, and electrically gilding; containing a metal film containing both of the nickel and the zinc; the color change of the electric gilded film containing the nickel having no concern with the change of the same cation of an electrolyte; upsetting the film from the electrolyte. The various colors of the produced film are able to generate using the electrolyte solution by selecting the process numbers.
Patent KR-20000016436-A (KR)
Title: Activated carbon free absorbent articles having a silica and zeolite odourcontrol system
Inventor: GUARRACINO MARIO
IPC: A61F13/472
Filed: 1997-05-23
Abstract: PURPOSE: The combination of silica and zeolite can effectively remove an extensive odor which can exist within an absorbent article and decrease the expense of an odor control system. CONSTITUTION: An absorbent article doesn't have an activated carbon and includes a topsheet, a backsheet, and an absorbent core positioned in the middle of the topsheet and backsheet. The absorbent article has an improved odor control system including the combination of silica and zeolite.
Patent KR-20000022122-A (KR)
Title: Voltage multiplier with an output voltage practically independent of the supply voltage
Inventor: LAUTERBACH CHRISTL
IPC: H02M3/07
Filed: 1997-06-12
Abstract: PURPOSE: A voltage multiplier is provided to allow a relatively simple and good regulation of the output voltage even in integrated circuits in which strong fluctuations of the supply voltage must be allowed for. CONSTITUTION: At least two pump transistors(X1,X2,X3,X4) is connected in series, a first transistor (X1) is directly connected to input, and a final pump transistor(X4) is directly or indirectly connected output. Gates of the odd pump transistors(X1,X2) are connected to a first clock signal(F4) through first capacitors(11,31) and even pump transistors(X2,X4) are connected to a second clock signal(F2) through the another first capacitors(21,41). Odd connection nodes(X1,X2; X3,X4) of a DC circuit are connected to a third clock signal(F3) through second capacitors(12,32) and even connection nodes(X2,X3; X4, VPMp or X4, D) of the DC circuit are connected to a forurth clock signal(F3) through the another second capacitors(22,42). The output(VPMp) is connected to a regulator(PD) and the regulator on/off switches the clock signals(F1,F2,F3,F4). A voltage multiplier required forr programming flash EEPROM's provides the partial voltage(Vw) of the output voltage(VPMp) to all substrate terminal for at least two pump transistors(X1,X2,X3,X4).
Patent KR-20000050551-A (KR)
Inventor: LEE JIN GAP
IPC: F04C18/02
Filed: 1999-01-11
Abstract: PURPOSE: An apparatus for preventing overcompression of a scroll compressor is provided to maintain refrigerant at suitable pressure by promptly detouring refrigerant from a high pressure part to a low pressure part in case that the compressor operates being deviated from the set pressure range. CONSTITUTION: In a scroll compressor including an electric machine part formed with a stator and a rotor, and a compressing machine part formed with a fixed scroll(7) and a rotating scroll receiving operating power from the electric machine part for compressing refrigerant, an apparatus for preventing overcompression of the scroll compressor includes at least one groove(104) formed in the rear of the fixed scroll for being communicated with a suction part(101) in which refrigerant is not compressed, a middle pressing part(102) in which refrigerant is being compressed and a discharging part(103) in which refrigerant is completely compressed, a piston valve(105) opening and closing the suction part with performing upward and downward rectilinear motion in the groove, an elastic member elastically supporting the piston valve, a through hole being communicated with the middle compressing part passing through the piston valve, a plate valve(109) opening and closing the through hole, and at least one valve securing part having a discharging hole being communicated with the discharging part and limiting the movement height of the piston valve.
Patent KR-20000034797-A (KR)
Inventor: GO JEONG WAN
IPC: G11B7/004
Filed: 1999-02-10
Abstract: PURPOSE: A method for allotting a supplementary spare area is provided to calculate and allot a necessary supplementary spare area simply. CONSTITUTION: In a method for allotting a supplementary spare area, at initializing a disk, alogical sector number to be endowed to a defective sector is skipped, and is endowed to a next sector. A position of the replaced detective sector is a primary detect list(PDL)(S101). A necessary supplement space area is calculated(S102), and an initial supplement space area is allotted(S103). A remaining state flag for the initial supplement space area is set to an initial state '0'(S104). A maximum size of an additional supplement space area is calculated by subtracting the initial supplement space area from the necessary(maximum) supplement space area(S105). Size information of the additional supplement space area and the remaining state information for the additional supplement space area are recorded to a predetermined position of a defect management area, and then an initialization operation is ended(S106).