baber/WOPTO huggingface dataset:
Patent KR-20050075411-A (KR)
Title: Prepolymers containing silyl groups, the production thereof, and the use of the same in polyurethane foams
Inventor: BACHON THOMAS
IPC: C08G18/76
Filed: 2003-11-12
Abstract: The invention relates to a prepolymer containing at least one group of general formula (I) -X-A-Si(Z)n(OR)3-n (I), and optionally at least one group of general formula (II) -N(R1)-C(O) -Y-R2 (II), wherein R1 represents H or a linear or branched, saturated or unsaturated alkyl radical comprising between 1 and 18 C atoms; the radical R2 respectively represents a linear or branched, saturated or unsaturated alkyl radical comprising between 1 and 44 C atoms or a radical of general formula (III) R3-(O)-CHR 4-CHR4)n- (III) wherein R3 represents a linear or branched, saturated or unsaturated alkylene radical comprising between 1 and 44 C atoms, and the radicals R4 independently represent H or a linear or branched alkyl radical comprising between 1 and 4 C atoms; n represents a number between 1 and 1000; and Y represents O, S or NR2, R2 having the cited designation. The total number of functional groups I and II in the prepolymers amounts to more than 2. The invention also relates to compositions containing such prepolymers, to methods for the production thereof, and to the use of the same.
Patent KR-20050085129-A (KR)
Title: Device for detachably linking a wiper blade with a driven wiper arm
Inventor: FINK ANDREAS
IPC: B60S1/40
Filed: 2003-11-21
Abstract: The invention relates to a device and to a method for detachably linking a wiper blade (12) with a driven wiper arm (14), whereby said wiper blade (12) comprises a wiper strip (16) facing the pane to be wiped, at least one strip-like oblong support element (18, 20), a bridle element (22) linked with said support element (18, 20), and a joining element (24), oscillatingly mounted on the bridle element (22), for connection to a coupling section (26) of the wiper arm (14). The invention is characterized in that the coupling section (26) comprises a tongue-shaped insertion section (28), in that the joining element (24) comprises a seat for the insertion section (28) and in that the coupling section (26) and the joining element (24) comprise securing sections (42, 56) for durably interlinking them. In order to achieve a preassembly position in which the longitudinal axis of the wiper arm (14) forms an angle beta in the range of approximately 10° to 100° with the longitudinal axis of the joining element (24), the insertion section (28) can be inserted in the seat (30) in a substantially linear direction (64). In order to achieve a post-assembly position, the wiper arm (14) and the linking section (24) can be pivoted relative each other about the contact area of insertion section/seat until the securing sections (40, 42, 56) allow a permanent interlinkage.
Patent KR-20060114618-A (KR)
Title: System and method for managing and communicating software updates
Inventor: MEULEMANS MICHAEL EDWARD
IPC: G06F9/44
Filed: 2004-07-23
Abstract: A system and method for facilitating the selection and implementation of software updates while minimizing the bandwidth and processing resources required to select and implement the software updates. In one embodiment, an update service controls access to software updates, or other types of software, stored on a server.
Patent KR-20060063772-A (KR)
Title: Honeycomb structural body, manufacturing method of the honeycomb structural body, and exhaust gas purifying device
Inventor: YOSHIDA YUTAKA
IPC: B01D53/94
Filed: 2004-12-24
Abstract: A honeycomb structure having excellent mechanical strength, durability, and punching strength, characterized in that, when recesses and projections are formed on the outer peripheral surfaces of the honeycomb structure and a ceramic block and where the gravity center of a least squares curve based on points forming the profile of a cross section vertical to the longitudinal direction of the honeycomb structure is (c1), a distance between the concentric least circumscribing curve of the least squares curve having the gravity center (c1) and the gravity center (c1) is (D1), a distance between the concentric maximum inscribing curve of the least squares curve having the gravity center (c1) and the gravity center (c1) is (D2), and M1 = D1 - D2, 0.3mm <= M1 and where the gravity center of the least squares curve based on points forming the profile of a cross section vertical to the longitudinal direction of the ceramic block is (c2), a distance between the concentric least circumscribing curve of the least squares curve having the gravity center (c2) and the gravity center (c2) is (D3), a distance between the concentric inscribing curve of the least squares curve having the gravity center (c2) and the gravity center (c2) is (D4), and M2 = D3 - D4, 0.5mm <= M2 <= 7.0mm.
Patent KR-20050094879-A (KR)
Title: Traffic information providing system, traffic information expressing method and device
Inventor: ADACHI SHINYA
IPC: G08G1/01
Filed: 2004-01-21
Abstract: A traffic information providing system wherein even in any different traffic environment, traffic information expressed in any degree of detail can be compressed to a data amount in accordance with such a different traffic environment. The system includes a traffic information providing device (30) that comprises means (33) for producing sampling data from traffic information expressed by a function of distance from a reference position on a load and by a function of time, and means (34) for subjecting the sampling data to a discrete wavelet transformation to transform the traffic information to a scaling coefficient and a wavelet coefficient. The system also includes a traffic information utilizing device (60) that subjects the scaling coefficient and wavelet coefficient received from the traffic information providing device (30) to an inverse discrete wavelet transformation to reconstruct the traffic information. Even when the traffic information providing device (30) provides the scaling coefficient and wavelet coefficient without awareness of the traffic environment and reception status, the receiving side can reconstruct general and detailed information within a range of the received information.
Patent KR-20050100394-A (KR)
Title: Self-mixing tank
Inventor: ROBERTS BENJAMIN R
IPC: B01F5/00
Filed: 2004-02-11
Abstract: A tank comprising a rounded bottom section with an inlet located at the lowest point of the rounded bottom section having openings to direct fluid against the curved side walls to form a circulation cell. An outlet is provided inside the tank located above and in close proximity to the inlet. The design of the tank, inlet and outlet provide a circulation pattern that can mix, maintain and resuspend fluids and slurries.
Patent KR-20050114670-A (KR)
Inventor: YUYAMA SHOJI
IPC: B65B35/04
Filed: 2004-03-25
Abstract: A tablet packaging device capable of shortening fall time to catch packaging by preventing tablets from rebounding in a tablet fall guide passage, comprising the tablet fall guide passage (12) to guide the tablets falling diagonally downward from each of tablet outlets (10) of tablet feeders (8) vertically installed in multiple stages. A rebound prevention member (14) tilted to be positioned apart from the tablet outlets (10) toward the lower side is installed at the position of the tablet fall guide passage (12) opposite to the tablet outlets (10).
Patent KR-20060028385-A (KR)
Title: Light-emitting devices with fullerene layer
Inventor: LU ZHENG HONG
IPC: H01L51/52
Filed: 2004-03-29
Abstract: The present invention provides a layered structure including a fullerene layer exhibiting Ohmic behavior. The layered device includes a layer of fullerenes and a layer of a fluoride compound of pre-selected thickness. The layered structure includes a third layer of an electrically conductive material located on the second layer to which electrical contact can be made. The thickness of the second layer is selected so that the layered structure exhibits substantially Ohmic contact across the first, second and third layers. The present invention also provides a light-emitting device which includes a substrate and a first electrically conductive layer defining an anode electrode layer on the substrate. The device includes an electron transport layer which includes fullerenes, and a second electrically conductive layer defining a cathode electrode layer on the electron transport layer. The device includes a layer of light-emissive material between the anode electrode layer and the electron transport layer.
Patent KR-20060018251-A (KR)
Title: Loom
Inventor: SPEICH FRANCISCO
IPC: D03D49/04
Filed: 2004-06-03
Abstract: The invention relates to a loom comprising a warp thread tensioning device and a shedding device (12), which comprises pre-tensioned warp threads (4) in a first shedding position (F1). The loom also comprises a lifting device (38), which can be driven in an oscillating manner, and followers (40) for the warp threads (4), in addition to control means (46) that can be operated by actuators (44) in order to selectively engage the warp threads (4) in the followers (40) and that displace the warp threads (4) into a second shedding position (F3). To simplify said loom, a second lifting device (48), which is common to all warp threads (4), is provided in order to displace said warp threads (4) from the first shedding position (F1) into a selection position (F2), in which the first lifting device (38) is active, and in order to displace non-selected warp threads in unison into the first shedding position (F1) by the pre-tensioning of said warp threads (4).
Patent KR-20060024799-A (KR)
Title: Cyanoacrylate compositions
Inventor: KNEAFSEY BRENDAN J
IPC: C09J4/04
Filed: 2004-06-18
Abstract: This invention relates to cyanoacrylate- containing compositions that include, in addition to the cyanoacrylate component, certain accelerators to improve fixture speeds on certain substrates.
Patent KR-20070076814-A (KR)
Title: Method of manufacturing semiconductor decive
Inventor: SONG SEOK PYO
IPC: H01L27/108
Filed: 2006-01-20
Abstract: A method for manufacturing a semiconductor device is provided to easily perform a spacer etching process by making a part of a dielectric for a spacer into an etch-vulnerable layer and using an etching removal speed of the etch-vulnerable layer. A semiconductor substrate(10) where a conductive pattern(20) is formed is prepared. A dielectric for a spacer is formed on the entire surface of the substrate including the conductive pattern. An implantation process is performed on the dielectric for a spacer to make the dielectric for a spacer part formed on an upper surface of the conductive pattern and the surface of the substrate into an etch-vulnerable layer. The etch-vulnerable layer is selectively removed to form a spacer(50) on a sidewall of the conductive pattern. The conductive pattern is a gate or a bit line.
Patent KR-20070077232-A (KR)
Title: Incinerator of wastes
Inventor: HO HYEONG CHEOL
IPC: F23G5/46
Filed: 2006-01-23
Abstract: An incinerator of wastes is provided to effectively remove harmful substances of exhaust gas due to incomplete combustion by completely burning wastes, and to utilize waste heat of combustion gas. An incinerator of wastes includes a combustion chamber, a cyclone for separating unburnt particles and dust from combustion gas through centrifugal force, and a dust collector for separating harmful gas from the combustion gas by using wash water. The combustion chamber includes a first combustion chamber(1) in which wastes are firstly burnt, and a second chamber in which combustion gas generated from the first combustion chamber is burnt. An upper air supply pipe(9) and a lower air supply pipe(10) are arranged on an inner wall of the first combustion chamber so as to supply air into the first combustion chamber. The upper air supply pipe has a plurality of nozzles(9a) inclined downward and the lower air supply pipe has a plurality of nozzles(10a) inclined upward so as to discharge air supplied to the first combustion chamber and lengthen the retention time of combustion gas in the first combustion chamber.
Patent KR-20060085585-A (KR)
Inventor: DIEHL ERIC
IPC: H04N5/913
Filed: 2006-01-23
Abstract: 보안 기 기록 매체(110) 및 이 매체 상에 인크립트된 콘텐츠(14)를 디스크램블링하는 방법을 제공한다.  플레이어(120)가 그 콘텐츠에 액세스하고자 하면, 매체 상의 보안 프로세서(111)는, 바람직하게, 그 플레이어의 아이덴티티를 폐기 리스트에서(113)의 아이덴티티와 비교함으로써 플레이어가 폐기되지 않았음을 검증하고(202), 이후 상호 인증을 수행한다(204).  이에 따라, 보안 프로세서는 플레이어가 콘텐츠에 액세스하는 권한을 갖고 있다고 검증하며 그 콘텐츠를 디스크램블하는데 필요한 키를 플레이어에게 제공하며(206, 207), 이후 플레이어는 그 콘텐츠를 디스크램블한다(208). 
       
     보안 프로세서, 폐기 리스트, 디스크램블, 인크립트된 콘텐츠
Patent KR-20070077927-A (KR)
Title: Laundry device
Inventor: KIM SEONG KYU
IPC: D06F39/00
Filed: 2006-01-25
Abstract: A washing and drying machine is provided to reduce limitation of space by installing one of a washing unit and a drying unit on the other of them as well as to install them side by side. A washing and drying machine includes a body and a controller(110). The controller includes a main control section, a manipulation section and a display section. The manipulation section and the display section send an input signal to the main control section and display the control state according as the signal is transferred from the main control section. The controller is selectively installed at an upper portion of the body or below the upper portion. A main control section side integrated connector(131) is provided in the main control section. A controller side integrated connector is provided in the controller. The main control section and the controller are electrically connected by the main control section side connector and the controller side integrated connector. The main control section side integrated connector extends from the main control section to be fixed to the body.
Patent KR-20070081929-A (KR)
Title: Method for order/selling about congratulations and condolences using internet
Inventor: JI SUK KYUNG
IPC: G06Q30/06
Filed: 2006-02-14
Abstract: A method for making and selling congratulation/condolence products in the Internet is provided to complete an order for the congratulation/condolence products through real-time chatting by using samples, and a photo, a name, a pattern, and a phrase received from a customer. An object to be printed is selected by the customer. The samples of the selected object are displayed to the customer. The customer selects desired specification from the displayed samples through the chatting between the customer and a maker. An estimate is calculated based on the selected specification. The customer orders the congratulation/condolence products according to the estimate. The congratulation/condolence products are delivered to a place and date requested from the customer.
Patent KR-20060022299-A (KR)
Inventor: RYU DUK KYUN
IPC: B29C65/52
Filed: 2006-02-15
Abstract: 본 발명은 가구용 멀티톤 필름 가공장치에 관한 것으로서, 단색 일변도인 가구에 다양한 색상 및 문양을 구비한 멀티톤 필름의 구조를 갖는 필름을 대량으로 생산할 수 있도록 하기 위한 것이다. 
     이를 실현하기 위한 본 발명의 장치는, 양측 상단에 각각 길이방향으로 레일(101)이 구비된 장방형의 지지 베이스부(100)와, 상기 지지 베이스부(100)의 레일(101)에 안착되어 직선방향으로 이동이 가능하도록 구비되되, 상면에는 진공펌프(103)로 부터 흡인력이 작용하는 다수의 흡입구(202)가 형성된 대차(200)와, 상기 대차(200)의 상면에 흡착 가능하도록 통기성을 갖고 있으며, 상면에는 멀티톤 필름(1)이 안착되어지는 작업대(203)와, 상기 대차(200)의 이동 경로를 따라 구비되어 작업대(203)상에 안착된 멀티톤 필름(1)의 양면에 보호테이프(2) 및 성형용 필름(4)을 각각 순차적으로 부착시키기 위한 제1접착부(300) 및 제2접착부(400)가 구성됨을 특징으로 한다. 
       
     멀티톤, 가구, 필름, 색상, 문양
Patent KR-20070083345-A (KR)
Title: Method for group ware service authentication in portable terminal
Inventor: PARK KI SOO
IPC: H04W88/02
Filed: 2006-02-21
Abstract: An apparatus and a method for group ware service authentication in a mobile terminal are provided to prevent personal information from being exposed and to use other service in a common work system through one authentication process until releasing connection. A method for group ware service authentication in a mobile terminal includes the steps of: checking whether a common work system connection mode is selected by user's manipulation(S201); checking first authentication information when the common work system connection mode is selected(S203); generating a first authentication request message for checking whether the mobile terminal is permitted for connection with a common work system(S205); transmitting the first authentication request message to the common work system(S207); checking whether a first authentication permission message is received from the common work system(S209); checking whether second authentication information is inputted by user's selection when the first authentication permission message is received(S211); generating a second authentication request message including the second authentication information when the second authentication information is inputted(S213); transmitting the second authentication request message to the common work system(S215); checking whether the second authentication request message is received from the common work system(S217); and finishing after connecting with the common work system when the second authentication permission message is received from the common work system(S219).
Patent KR-20070084644-A (KR)
Title: Comb
Inventor: HONG SEUN PYO
IPC: A45D24/22
Filed: 2006-02-21
Abstract: A comb is provided to discharge water or hair styling agent to user's hair to enable the user to do his/her hair conveniently and easily when the user combs his/her hair. A comb includes a body(4), a handle(6) and plural teeth of a comb. The inside of the body(4) is made of a space portion(2). The handle(6) extends from one side of the body(4). Plural teeth of a comb are fixed on one side of the body(4). Water is stored in the space portion(2) of the body(4). A discharge portion(16) is formed on the body(4) in a direction that the teeth of a comb are fixed. If the teeth of a comb are pushed when a user combs his/her hair, the inside of the space portion(2) is compressed and the water stored in the space portion(2) is discharged to the hair.
Patent KR-20070089318-A (KR)
Title: Jig for power-cable assembling
Inventor: YUN WAN JUNG
IPC: H01R11/00
Filed: 2006-02-28
Abstract: A jig for assembling a power cable terminal in an electric car is provided to adjust an angle of each terminal easily by only inserting the terminal by forming a fastening terminal groove and an earth terminal groove on an upper surface of a synthetic resin block, thereby assembling a power cable terminal of the electric car which has to be assembled with an accurate angle easily. A jig for assembling a power cable terminal in an electric car comprises the following parts: a hexahedral block(6); cable grooves(14) which are arranged at a side edge of the block and are recessed to insert and fix a power cable(12); a fastening terminal groove(8) which is linearly elongated from each cable groove and is recessed to receive a fastening terminal(2) connected to an end of the power cable; and an earth terminal groove(10) which is recessed in the same direction around a boundary between each cable groove and the fastening terminal groove, and makes an earth terminal(4), inserted into the power cable for earth, toward the same direction to be fixed.
Patent KR-20070090326-A (KR)
Title: Acrylic adhesive composition and adhesive commodities containing the same
Inventor: CHO IK HWAN
IPC: C09J133/06
Filed: 2006-03-02
Abstract: An acrylic adhesive composition easy to be attached or detached after use, and an adhesive product containing the composition are provided to improve initial adhesive strength and adhesion maintenance. An acrylic adhesive composition comprises 100 parts by weight of an acrylic adhesive resin; 5-30 parts by weight of a petroleum-based tackifier; and 15-40 parts by weight of a thermal expandable filler. Preferably the acrylic adhesive resin is an aqueous acrylic adhesive resin or an oily acrylic adhesive resin; the petroleum-based tackifier is a polymer polymerized from a vinyl monomer containing a C3-C12 (meth)acryloyl group and has a viscosity of 1,000-80,000 and a weight average molecular weight of 500-50,000; and the filler has an average particle size of 6-32 micrometers.
Patent KR-20060036066-A (KR)
Inventor: KIM DAE HEE
IPC: H04L29/06
Filed: 2006-03-06
Abstract: 케이-프로토콜(K-Protocol)   
     본 발명은 IBM-PC호환기종과 모바일(Mobile), PDA 등을 이용하여 서비스되는 인터넷서비스 제공자와 제공받는자 간의 통신규약인 프로토콜(Protocol)프로그램으로서, 
     기존의 User(서비스 제공 받는 자) UTP Cable망 선로 이전의 광통신 섬유망이나 통신선로의 개·보수 없이 하기 주요기능에 대한 서비스가 가능하게 하는 데 목적이 있으며, 기존 프로토콜의 변경된 K-Protocol이 이를 가능하게 하는데 주된 특징이자 목적이며, 
     기존 UTP Cdble 망이나 동축 케이블망, 광통신 섬유망 등에서 최대 1Giga bytes per second의 전송량을 지원하게 하고, 국내기준 한국전력공사의 전력 보급망인 전선을 통신선로로 이용함으로써 전선의 장점인 
     ① 저항값의 최소화 
     ② 가장 짧은 시간에 최대거리 전송 
     ③ Line 폭주로 인한 Sever Down 또한 Rack 현상 완전해소 등의 장점으로 서비스의 향상화가 가능하고 
     ④ 별첨 "전력선 통신에 대한 이론"에서 처럼 변복조기인 Modem, LAN이 없이 통신기기를 전기 콘센트에 꼽는 것만으로도 인터넷 서비스가 가능하게 하며, 
     주된 특징으로서, 송신 전주의 전선이 220 Volt라고 가정할 때 Sever 및 선 로의 개·보수 및 조정없이 최대 1억 User를 다중 접속케 할 수 있고, 고압전선 선로를 통하여 최대 100 Giga bytes per second의 전송속도를 유지하며 양방향 통신을 가능케 하는데 본 프로그램의 특징이자 발명의 목적이며, 
     주요기능으로, 
     인터넷 서비스 제공자는 선로의 개·보수를 하지 않고, 
     위와 같이 초고속 서비스를 할 수 있고, 
     부가 서비스로서, 
     1) URL Filtering 
     2) Web Anti-Virus 
     3) Content Control 
     4) Anti-Spyware 
     5) IM, Streaming ＆ P2P Control 
     6) Reverse Proxy 서비스를 함으로서 
     ① 비 업무적인 Web site 접속제어, 
     ② 사설 웹 메일을 이용한 내부 정보 유출 차단, 
     ③ Pop up 광고 및 스파이웨어 차단 
     ④ 인스턴트 메신저를 통한 내부 정보 유출 차단(MSN, Yahoo, Daum 등) 
     ⑤ MP3, P2P, 동영상 다운로드 차단 
     ⑥ 각 응용프로그램별 독립 Log관리(HTTP, FTP, Web, Mail, IM, P2P 등) 
     ⑦ 네트웍 바이러스 차단(HTTP, FTP) 서비스를 제공 할 수 있고, 
     7) 전선을 이용함으로서 전력 누전 등 사고를 미연에 방지할 수 있도록 자동감지 기능이 있고, 저항값이 최소화된 전선을 최대 900MHZ 대역의 안테나(Antena)대용으로 사용하여 새로운 무선 통신 존(zone ; 대역)을 형성하며, 초고속으로 서비스하기에 양방향 화상통신을 함에 있어 전혀 끊김없이 서비스를 제공할 수 있도록 제어를 하여 주는 기능이 있다. 
       오감각 전송 서비스(F·S Service)   
     본 발명은 IBM-PC호환기종과 모바일(Mobile), PDA 등을 이용하여 서비스되는 인터넷 서비스 제공자와 제공받는자 간의 통신규약인 케이-프로토콜을 응용한 서비스로서, 반드시 케이-프로토콜 기반 내에서만 서비스가 가능하며, 오감각 전송 서비스(F·S Service ; Five Sense Transfer Service)는 인간의 5감각(후각·청각·미각·시각·촉각)을 인터넷 망을 이용하여 전달할 수 있도록 한 서비스로서 미각·후각·촉각의 감각을 전달할 상호 신호체계를 RS(Receive and send) Control Box를 통하여 전달할 계획에 있다. 
     이 서비스는 2006년 상반기 내에 시범 서비스를 거쳐 하반기 중에 정식 상용 서비스를 할 계획이며, 이 F·S Service를 위한 Protocol에는 수많은 IP중에서 7,000여개나 되는 5감각 신호체계의 미세한 주파수를 정확히 전송요구한 IP로 전송 가능케하는 AI(인공지능 ; Artificial Intelligence) Protocol 기능도 내장되어 있다. 
       
     케이프로토콜, 프로토콜, 오감각, 인공지능, 통신규약, PLC통신, 전력선통신, 오감각 전송
Patent KR-20070093568-A (KR)
Title: Method and apparatus for controlling power for heating roller
Inventor: CHO JUN SEOK
IPC: G03G15/20
Filed: 2006-03-14
Abstract: A power control method and a power control apparatus for a heating roller are provided to reduce a flicker phenomenon and increase a surface temperature of the heating roller to a fixing target temperature in a short time. A source power is supplied to a heating resistor as a roller power while gradually increasing the maximum level of the source power up to a predetermined maximum supply level(410). A surface temperature of a heating roller is measured, and then the source power at the maximum supply level is supplied to the heating resistor as the roller power until the measured surface temperature reaches a predetermined fixing target temperature(420). If a printing apparatus receives a printing command and the roller power is normally supplied, a toner image of data is transferred onto a printing medium by using the heating roller(430). Herein, the supplying of the source power is performed right after an image forming apparatus is turned on, or right after the image forming apparatus is switched from a standby mode to a print mode.
Patent KR-20060028477-A (KR)
Inventor: KO JUNG WAN
IPC: G11B7/007
Filed: 2006-03-15
Abstract: 본 발명은 기록 방지 정보를 저장하는 기록 매체와 기록 및 재기록이 가능한 디스크상에 기록된 데이터를 사용자가 원하지 않는 기록으로부터 보호하기 위한 기록 방지 방법이 개시되어 있다. 본 발명은 기록 매체 특히, DVD-RAM 등과 같이 일반적으로 케이스에 들어 있는 카트리지 상태로 사용되어져서 케이스에 기록 방지를 위한 인식 스위치를 가지고 있는 경우, 케이스로부터 디스크가 분리되어 나디스크(裸디스크, Bare disc) 상태로 사용되어질 때 기록 방지가 되지 않는 문제점을 개선하기 위해서, 디스크상의 사용자 데이터 영역 이외의 영역 즉, 리드인 영역, 리드아웃 영역 또는 기록 정보 영역에 기록 방지 정보를 기록하고 이 기록 방지 정보를 이용하여 원하지 않는 기록으로부터 데이터를 보호하는 방법과 디스크상에 저장된 기록 방지 정보와 케이스상의 기록 방지용 인식 스위치의 상태가 서로 일치되지 않는 경우에 데이터를 보호하는 방법 등을 개시함으로써, DVD-RAM 또는 DVD-R/RW과 같이 기록 및 재기록이 가능한 기록 매체를 나디스크상태로 사용하는 경우에도 안정적으로 기록 방지할 수 있다.