KR100545019B1 - Optical disc - Google Patents
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- KR100545019B1 KR100545019B1 KR1019980010198A KR19980010198A KR100545019B1 KR 100545019 B1 KR100545019 B1 KR 100545019B1 KR 1019980010198 A KR1019980010198 A KR 1019980010198A KR 19980010198 A KR19980010198 A KR 19980010198A KR 100545019 B1 KR100545019 B1 KR 100545019B1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1883—Methods for assignment of alternate areas for defective areas
- G11B20/1889—Methods for assignment of alternate areas for defective areas with discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1229—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc lead-in area
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1231—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc lead-out area
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1883—Methods for assignment of alternate areas for defective areas
- G11B2020/1893—Methods for assignment of alternate areas for defective areas using linear replacement to relocate data from a defective block to a non-contiguous spare area, e.g. with a secondary defect list [SDL]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1883—Methods for assignment of alternate areas for defective areas
- G11B2020/1896—Methods for assignment of alternate areas for defective areas using skip or slip replacement to relocate data from a defective block to the next usable block, e.g. with a primary defect list [PDL]
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
본 발명은 기록가능한 대용량의 광디스크에 대응할 수 있는 결함관리영역을 갖는 광디스크에 관한 것이다.The present invention relates to an optical disc having a defect management area that can cope with an optical disc of recordable large capacity.
본 발명의 광디스크는 중복되지 않도록 결함영역정보를 기록하기 위하여 리드-인 영역에 마련된 제1 결함관리영역과, 제1 결함관리영역과 동일한 정보를 기록하기 위하여 리드-아웃 영역에 마련된 적어도 하나 이상의 제2 결함관리영역들을 구비하는 것을 특징으로 한다.The optical disc of the present invention has a first defect management area provided in the lead-in area for recording the defect area information so as not to overlap and at least one or more agents provided in the lead-out area for recording the same information as the first defect management area. And two defect management areas.
본 발명에 의하면, 리드-인 영역에 하나의 결함관리영역만을 배치하고 나머지 결함관리영역들은 리드-아웃 영역에 배치함으로써 디스크들 간의 호환성을 유지할 수 있는 리드-인 영역의 크기를 유지하면서도 결함관리영역을 증가시킬 수 있다. According to the present invention, by arranging only one defect management area in the lead-in area and the other defect management areas in the lead-out area, the defect management area can be maintained while maintaining the size of the lead-in area capable of maintaining compatibility between discs. Can be increased.
Description
본 발명은 광디스크에 관한 것으로, 특히 기록가능한 대용량의 광디스크에 대응할 수 있는 결함관리영역을 갖는 광디스크에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc, and more particularly, to an optical disc having a defect management area that can correspond to a recordable large capacity optical disc.
광디스크는 CD(Compact Disc)가 보급되면서 일반화되기 시작한 디스크 매체로써 최근에는 대용량의 DVD(Digital Versatile Disc)의 규격이 나오면서 더욱 기대가 되고 있다. 통상 광디스크는 기록가능 여부에 따라 CD-ROM(CD-Read Only Memory), DVD-ROM 등과 같은 재생전용의 디스크와, CD-WORM(CD-Write Once Read Many) 등과 같은 한 번 기록이 가능한 디스크, 그리고 CD-RW(CD-Rewritable), DVD-RAM(DVD-Random Access Memory) 등과 같은 반복 기록이 가능한 디스크로 분류될 수 있다. 여기서, 반복 기록이 가능한 디스크 중 DVD-RAM(DVD-Random Access Memory)은 그 규격이 제의되고 있는 형편으로 대용량화 하기 위한 연구가 활발히 진행되고 있다.Optical discs are a disc medium that has begun to be generalized with the spread of compact discs (CDs). In recent years, optical discs (Digital Versatile Disc) have become more and more expected. In general, optical discs are discs for reproduction only, such as CD-ROM (CD-Read Only Memory), DVD-ROM, etc., and once-recordable discs such as CD-WORM (CD-WORM Once) In addition, it can be classified as a disc capable of repeatable recording such as a CD-RW (CD-Rewritable), a DVD-Random Access Memory (DVD-RAM), or the like. Here, studies have been actively conducted to increase the capacity of DVD-RAM (DVD-Random Access Memory) among repeatable recording discs due to the proposal of the standard.
그런데, 기록 가능한 디스크들은 반복 기록에 의한 기록면의 열화, 스크래치(Scratch), 제작시 오류 및 미진 등과 같은 원인으로 결함영역이 발생하게 된다. 이러한 결함영역에는 데이터가 제대로 기록되지 않음으로 재생시 정확한 데이터를 얻을 수 없게 된다. 다시 말하여, 결함영역으로 인하여 디스크의 중요한 요소인 신뢰성이 저하되게 된다. 이 디스크의 신뢰성 저하를 방지하기 위해서는 결함영역에는 데이터가 기록되지 않도록 제어되어야 한다. However, recordable discs have a defective area due to deterioration of the recording surface due to repetitive recording, scratches, errors in production and fineness. Since data is not recorded correctly in such a defective area, accurate data cannot be obtained during reproduction. In other words, the defective area degrades the reliability, which is an important factor of the disc. In order to prevent deterioration of the reliability of this disk, data must be controlled so that data is not recorded in the defective area.
이를 위하여, 디스크 드라이버(Driver)는 디스크에 정보를 기록하기 전에 테스트 데이터를 기록한 후 이를 재생하여 기준레벨 이상의 신호가 검출되는가를 확인하는 검증(Verification) 동작을 수행하여 결함영역을 검출한다. 그리고, 검출된 결함영역을 효과적으로 관리하기 위하여 결함영역의 어드레스(Address)에 관한 리스트를 디스크의 특정영역에 기록하여 두고 다음의 기록 동작에서 그 결함영역리스트를 읽어 해당하는 결함영역에 데이터가 기록되지 않도록 한다. 또한, 재생동작에서도 그 결함영역리스트를 이용한다.To this end, the disk driver detects a defective area by recording test data before recording information on the disk and then reproducing the same to verify whether a signal of a reference level or higher is detected. In order to effectively manage the detected defective areas, a list of addresses of the defective areas is recorded in a specific area of the disc, and the data is not recorded in the corresponding defective areas by reading the defective area list in the next recording operation. Do not The defect area list is also used in the reproduction operation.
결함영역리스트는 관리영역의 크기에 따라 제1 결함리스트(Primary Defective List; 이하, PDL이라 한다)와 제2 결함리스트(Secondary Defective List; 이하, SDL이라 한다)로 분류될 수 있다. The defect area list may be classified into a first defect list (hereinafter referred to as PDL) and a second defect list (hereinafter referred to as SDL) according to the size of the management area.
PDL은 디스크의 제작과정이나 초기화 과정에서 수행되는 검증동작으로 검출되는 결함영역의 어드레스에 관한 리스트를 의미한다. 이 PDL은 결함이 있는 최소기록단위, 즉 결함 섹터(Sector)의 시작 어드레스가 기록되어 있다. 이에 따라, 디스크 드라이버는 초기 기록동작에서 PDL을 읽어 해당하는 결함섹터는 건너뛰는 형태로써 선형적으로 쉬프트(Linear Shift)하여 정보를 기록한다. 이 경우, 결함섹터 다음에 오는 섹터는 결함섹터 이전의 섹터에 대하여 물리적인 어드레스는 점프된 값을 갖지만 논리적인 어스레스는 순차적인 값을 갖게 된다. 또한, 재생동작에서도 PDL을 읽어 결함섹터의 정보는 재생되지 않도록 한다.PDL refers to a list of addresses of defective areas detected by a verification operation performed during a disc manufacturing process or an initialization process. In this PDL, the smallest defective recording unit, i.e., the start address of a defective sector, is recorded. Accordingly, the disk driver reads the PDL in the initial write operation and records the information by linearly shifting the defective sector in a skipped form. In this case, the sector following the defective sector has a jumped value while the physical address has a sequential value with respect to the sector before the defective sector. Also, in the reproducing operation, the PDL is read so that the information of the defective sector is not reproduced.
SDL은 디스크에 재기록을 위해 수행되는 검증동작으로 검출되는 결함영역의 어드레스과 그 대체영역(Spare Area)의 어드레스에 관한 리스트를 의미한다. 이 SDL은 일반적으로 블록단위, 예컨데 에러검사 및 정정(Error Checking and Correction; 이하, ECC라 한다) 블록단위로 기록되어 있는 정보가 손상되는 것을 방지하기 위하여 ECC 블록단위로 결함영역을 관리하기 위한 것으로써, 결함 ECC 블록(이하, 결함블록이라 한다)의 어드레스와 결함영역을 대체하기 위하여 마련된 대체영역에 포함되는 대체 ECC 블록(이하, 대체블록이라 한다)의 어드레스를 구성으로 한다. 다시 말하여, SDL에는 적어도 하나 이상의 결함섹터가 포함된 결함블록의 시작 어드레스와 함께 그 결함블록 대신에 사용될 대체블록의 시작 어드레스가 사용자에 의해 기록된다. ECC 블록은 통상 16개의 섹터로 구성되고 있다. 이에 따라, 디스크 드라이버는 기록시 SDL을 읽어 결함블록에 대응하는 대체블록에 데이터를 기록한다. 또한, 재생시에도 디스크 드라이버는 SDL을 이용하여 상기와 같은 방법으로 데이터를 재생한다.SDL means a list of addresses of defective areas and addresses of spare areas detected by a verification operation performed for rewriting on a disc. This SDL is to manage defective areas in units of ECC blocks to prevent the information recorded in units of blocks, for example, Error Checking and Correction (ECC) blocks. The address of the defective ECC block (hereinafter referred to as a defective block) and the replacement ECC block (hereinafter referred to as a replacement block) included in the replacement area provided for replacing the defective area are constituted. In other words, in the SDL, a start address of a replacement block to be used in place of the defective block together with the start address of the defective block including at least one defective sector is recorded by the user. The ECC block is usually composed of 16 sectors. Accordingly, the disc driver reads the SDL during writing and writes data to the replacement block corresponding to the defective block. Also, at the time of reproduction, the disc driver reproduces data in the same manner as described above using SDL.
이러한, PDL과 SDL은 통상 디스크의 최내주 부분에 배치된 리드-인(Lead-in) 영역과 최외주 부분에 배치된 리드-아웃(Lead-out) 영역에 마련되는 결함관리영역(Defect Management Area; DMA)에 기록되고 있다. 이 결함관리영역은 통상 2 ECC 블록의 크기를 갖고 있다.Such a PDL and an SDL are usually provided in a lead-in area arranged in the innermost part of the disc and a lead-out area arranged in the outermost part of the disc. DMA). This defect management area usually has a size of 2 ECC blocks.
한편, 기록가능한 광디스크 매체는 대용량화되어 가는 추세에 따라 2.6 기가바이트(GByte)의 용량을 갖는 DVD-RAM에 이어 최근에는 4.7 기가바이트(GByte)의 용량을 갖는 DVD-RAM이 등장하고 있는 형편이다. 이와 같이, 디스크의 용량이 증가하는 경우 결함영역 또한 증가하는 것은 당연하다. 이에 따라, 증가되는 결함영역을 효과적으로 관리하기 위해서는 결함관리영역과 대체영역의 크기가 증가되는 것이 바람직하다.On the other hand, as recordable optical disc media are becoming larger, DVD-RAMs having a capacity of 2.6 gigabytes (GByte) have recently emerged, followed by DVD-RAMs having a capacity of 4.7 gigabytes (GByte). As such, when the capacity of the disk increases, it is natural that the defect area also increases. Accordingly, in order to effectively manage the increased defect area, it is desirable to increase the size of the defect management area and the replacement area.
그런데, 디스크 드라이버의 호환성을 위하여 디스크의 데이터 영역은 특정번지 예컨데, DVD-RAM의 경우 31000h번지부터 시작하도록 규정에서 권고되어지고 있다. 다시 말하여, 디스크의 리드-인 영역의 크기는 드라이버의 호환성을 위하여 디스크의 용량과는 무관하게 한정되게 된다. 이에 따라, 결함관리영역 또한 한정됨으로써 증가된 디스크의 결함영역을 효과적으로 관리할 수 없게 된다. 이 경우, 디스크의 신뢰성이 떨어지는 치명적인 문제점이 발생하게 된다. 따라서, 한정된 리드-인 영역을 유지하면서도 결함관리영역의 크기를 증가시킬 수 있는 방안이 요구되고 있다.However, for compatibility of the disk driver, the data area of the disk is recommended in a specific address, for example, in the case of DVD-RAM, starting from 31000h. In other words, the size of the lead-in area of the disk is limited regardless of the capacity of the disk for driver compatibility. Accordingly, the defect management area is also limited, so that the defective area of the increased disk cannot be managed effectively. In this case, a fatal problem in which the reliability of the disc is low will occur. Therefore, there is a demand for a method capable of increasing the size of the defect management area while maintaining a limited lead-in area.
본 발명은 상기 사정에 의하여 안출된 것으로써, 본 발명의 목적은 대용량의 광디스크에 적합하도록 결함관리영역의 용량을 증가시킬 수 있는 광디스크를 제공하는 것이다.The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an optical disk capable of increasing the capacity of the defect management area to be suitable for a large capacity optical disk.
상기 목적을 달성하기 위하여, 본 발명에 따른 광디스크는 중복되지 않도록 결함영역정보를 기록하기 위하여 리드-인 영역에 마련된 제1 결함관리영역과, 제1 결함관리영역과 동일한 정보를 기록하기 위하여 리드-아웃 영역에 마련된 적어도 하나 이상의 제2 결함관리영역들을 구비하는 것을 특징으로 한다.In order to achieve the above object, an optical disc according to the present invention has a first defect management area provided in a lead-in area for recording defect area information so as not to be duplicated, and a read-out for recording the same information as the first defect management area. And at least one second defect management area provided in the out area.
상기 목적 외에 본 발명의 다른 목적 및 이점들은 첨부 도면을 참조한 본 발명의 바람직한 실시예에 대한 설명을 통하여 명백하게 드러나게 될 것이다.Other objects and advantages of the present invention in addition to the above object will become apparent from the description of the preferred embodiment of the present invention with reference to the accompanying drawings.
이하, 본 발명의 바람직한 실시 예를 도 1 및 도 2를 참조하여 상세하게 설명하기로 한다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2.
일반적으로, 광디스크에는 자체의 결함이 발생하는 경우를 대비하여 적어도 하나 이상의 결함관리영역(DMA)을 포함하고 있다. 예들 들어, DVD-RAM의 경우 도 1에 도시된 바와 같이 리드-인 영역에 제1 및 제2 결함관리영역(DMA1, DMA2)과, 리드-아웃 영역에 제3 및 제4 결함관리영역(DMA3, DMA4)을 포함하고 있다. 이들 각 결함관리영역(DMA1, DMA2, DMA3, DMA4)은 모두 같은 내용의 PDL 및 SDL이 기록되게 된다. 이는 결함관리영역(DMA)에 결함이 발생하여 결함영역관리에 에러가 발생하는 것을 방지하기 위한 것으로 규격에서 권고하는 것이다. 각 결함관리영역(DMA1, DMA2, DMA3, DMA4)은 통상 2 ECC 블록의 크기를 갖고 있다. 또한, 각 결함관리영역(DMA1, DMA2, DMA3, DMA4)에는 인접하게 각 결함관리영역 크기 만큼의 잉여영역(Reserved Area)이 각각 배치되어 있다.In general, an optical disc includes at least one defect management area (DMA) in case a defect thereof occurs. For example, in the case of a DVD-RAM, as shown in FIG. 1, the first and second defect management areas DMA1 and DMA2 in the lead-in area, and the third and fourth defect management areas (DMA3) in the lead-out area. , DMA4). In each of these defect management areas (DMA1, DMA2, DMA3, DMA4), PDLs and SDLs having the same contents are recorded. This is to prevent the occurrence of an error in the defect area management due to a defect in the defect management area (DMA) and is recommended by the standard. Each defect management area (DMA1, DMA2, DMA3, DMA4) usually has a size of 2 ECC blocks. Further, in each of the defect management areas DMA1, DMA2, DMA3, and DMA4, a spare area corresponding to the size of each defect management area is disposed adjacent to each other.
도 2를 참조하면, 본 발명의 실시 예에 따른 DVD-RAM의 기록포맷이 도시되어 있다. 도 2에 도시된 DVD-RAM은 리드-인 영역과 데이터 영역 및 리드-아웃 영역을 구성으로 한다.Referring to Fig. 2, a recording format of a DVD-RAM according to an embodiment of the present invention is shown. The DVD-RAM shown in FIG. 2 has a lead-in area, a data area, and a lead-out area.
도 2에 도시된 DVD-RAM에 있어서, 리드-인 영역에는 제1 결함관리영역(DMA1)만이 배치되고 나머지 제2 내지 제4 결함관리영역(DMA2, DMA3, DMA4)은 리드-아웃 영역에 배치되게 된다. 이에 따라, 제1 결함관리영역은 도 1에 도시된 기존의 DVD-RAM과 대비하여 2배로 증가된 크기, 즉 4 ECC 블록의 크기를 갖게 된다. 또한, 리드-인 영역에는 제1 결함관리영역(DMA1)에 인접하게 배치되며 그 결함관리영역 크기만큼의 크기를 갖는 잉여영역이 포함되게 된다. 그리고, 리드-아웃 영역에는 나머지 3개의 결함관리영역(DMA2, DMA3, DMA4)과 각 결함관리영역에 인접한 잉여영역들이 포함되게 된다. 여기서, 한 결함관리영역이 4 ECC 블록의 크기를 갖게 됨에 따라 리드-아웃 영역은 기존에 비하여 12 블록이 더 필요하게 되는데 이는 약 3트랙 정도를 더 마련함으로써 해결할 수 있다.In the DVD-RAM shown in FIG. 2, only the first defect management area DMA1 is arranged in the lead-in area, and the remaining second to fourth defect management areas DMA2, DMA3, and DMA4 are arranged in the lead-out area. Will be. Accordingly, the first defect management area has a size that is twice as large as that of the conventional DVD-RAM shown in FIG. 1, that is, the size of 4 ECC blocks. In addition, the lead-in area includes an excess area disposed adjacent to the first defect management area DMA1 and having a size equal to that of the defect management area. The lead-out area includes the remaining three defect management areas (DMA2, DMA3, DMA4) and surplus areas adjacent to each defect management area. Here, as one defect management area has a size of 4 ECC blocks, the lead-out area needs 12 more blocks than the conventional one, which can be solved by providing about 3 tracks.
결과적으로, 본 발명의 실시 예에 따른 광디스크는 결함관리영역의 배치를 변경함으로써 종래와 같은 리드-인 영역의 규격을 따르면서도 종래에 비하여 2배의 크기가 증가된 결함관리영역을 포함하게 되는 효과가 있다. 또한, 그 결함관리영역과 같은 크기의 잉여영역도 포함하게 된다. As a result, the optical disc according to the embodiment of the present invention has the effect of including the defect management area of which the size of the conventional lead-in area is increased by twice the size of the conventional one by changing the arrangement of the defect management area. There is. It also includes a surplus area of the same size as the defect management area.
여기서, 결함관리영역의 크기를 증가시키기 위하여 잉여영역을 이용하는 것도 고려할 만 하지만 이 잉여영역은 향후 10GByte 이상의 용량을 가지는 광디스크가 등장하는 경우를 위하여 그대로 놔두는 것이 바람직하다. In this case, it is also conceivable to use a surplus area to increase the size of the defect management area, but it is preferable to leave this surplus area as an optical disc having a capacity of 10 GByte or more in the future.
상술한 바와 같이, 본 발명에 따른 광디스크에 의하면, 리드-인 영역에 하나의 결함관리영역만을 배치하고 나머지 결함관리영역들은 리드-아웃 영역에 배치함으로써 디스크들 간의 호환성을 유지할 수 있는 리드-인 영역의 크기를 유지하면서도 결함관리영역은 증가할 수 있게 된다. 이에 따라, 대용량 광디스크에서 발생할 수 있는 보다 많은 결함영역을 효과적으로 관리할 수 있음으로써 광디스크의 신뢰성을 향상시킬 수 있게 된다.As described above, according to the optical disk according to the present invention, a lead-in area capable of maintaining compatibility between discs by arranging only one defect management area in the lead-in area and the other defect management areas in the lead-out area. The defect management area can be increased while maintaining the size of. Accordingly, it is possible to effectively manage more defect areas that may occur in a large capacity optical disc, thereby improving the reliability of the optical disc.
이상 설명한 내용을 통해 당업자라면 본 발명의 기술사상을 일탈하지 아니하는 범위에서 다양한 변경 및 수정이 가능함을 알 수 있을 것이다. 따라서, 본 발명의 기술적 범위는 명세서의 상세한 설명에 기재된 내용으로 한정되는 것이 아니라 특허 청구의 범위에 의해 정하여져야만 할 것이다.Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.
도 1은 일반적인 DVD-RAM의 구성을 나타낸 도면.1 is a diagram showing a configuration of a general DVD-RAM.
도 2는 본 발명에 따른 DVD-RAM의 구성을 나타낸 도면.2 is a diagram showing the configuration of a DVD-RAM according to the present invention;
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| KR100461470B1 (en) * | 1996-09-05 | 2005-04-06 | 삼성전자주식회사 | Variable method of main turn area for improving reliability of hard disk drive |
| KR20040015425A (en) * | 2002-08-12 | 2004-02-19 | 삼성전자주식회사 | High density recording medium for write-once adapting to a defect management, method of managing a defect and apparatus thereof |
| TWI248609B (en) | 2002-10-18 | 2006-02-01 | Samsung Electronics Co Ltd | Method and apparatus for managing disc defects using updateable dam, and disc thereof |
| KR100930239B1 (en) | 2002-10-18 | 2009-12-09 | 삼성전자주식회사 | Fault management method using updatable defect management area, device and disk thereof |
| KR100667749B1 (en) * | 2002-10-18 | 2007-01-11 | 삼성전자주식회사 | Method and apparatus for managing defect using temporary DFL and temporary DDS, and disc thereof |
| KR20040065004A (en) * | 2003-01-13 | 2004-07-21 | 삼성전자주식회사 | Method and apparatus for managing defect using temporary DMA and temporary FDMA and a disc thereof |
| KR20040077343A (en) * | 2003-02-28 | 2004-09-04 | 삼성전자주식회사 | Method and apparatus for managing defect using temporary DMA and temporary FDMA and a disc thereof |
| KR100950526B1 (en) * | 2003-04-14 | 2010-03-30 | 삼성전자주식회사 | Method for managing defect considered compatability with rewritable disc, disc drive and a write once disc thereof |
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| KR940016014A (en) * | 1992-12-17 | 1994-07-22 | 윤종용 | Disc recording medium and its playback method and apparatus |
| JPH08167250A (en) * | 1994-12-14 | 1996-06-25 | Nippon Telegr & Teleph Corp <Ntt> | Defect relieving method for information memory device and device for the method |
| JPH09265732A (en) * | 1996-03-25 | 1997-10-07 | Toshiba Corp | Information recording/reproducing device and alternate processing method |
| KR19980056225A (en) * | 1996-12-28 | 1998-09-25 | 구자홍 | How to manage defect area in rewritable optical disc system |
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| KR940016014A (en) * | 1992-12-17 | 1994-07-22 | 윤종용 | Disc recording medium and its playback method and apparatus |
| JPH08167250A (en) * | 1994-12-14 | 1996-06-25 | Nippon Telegr & Teleph Corp <Ntt> | Defect relieving method for information memory device and device for the method |
| JPH09265732A (en) * | 1996-03-25 | 1997-10-07 | Toshiba Corp | Information recording/reproducing device and alternate processing method |
| KR19980056225A (en) * | 1996-12-28 | 1998-09-25 | 구자홍 | How to manage defect area in rewritable optical disc system |
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