WO2011025148A2 - Recording medium, data recording/reproducing method, and data recording/reproducing apparatus - Google Patents

Recording medium, data recording/reproducing method, and data recording/reproducing apparatus Download PDF

Info

Publication number
WO2011025148A2
WO2011025148A2 PCT/KR2010/004740 KR2010004740W WO2011025148A2 WO 2011025148 A2 WO2011025148 A2 WO 2011025148A2 KR 2010004740 W KR2010004740 W KR 2010004740W WO 2011025148 A2 WO2011025148 A2 WO 2011025148A2
Authority
WO
WIPO (PCT)
Prior art keywords
data
recording
spare area
recording medium
area
Prior art date
Application number
PCT/KR2010/004740
Other languages
French (fr)
Other versions
WO2011025148A3 (en
Inventor
Sung Hoon Kim
Yong Cheol Park
Original Assignee
Lg Electronics Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lg Electronics Inc. filed Critical Lg Electronics Inc.
Publication of WO2011025148A2 publication Critical patent/WO2011025148A2/en
Publication of WO2011025148A3 publication Critical patent/WO2011025148A3/en

Links

Images

Classifications

    • 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
    • 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
    • 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
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • G11B7/00375—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs arrangements for detection of physical defects, e.g. of recording layer
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • 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
    • 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
    • G11B2020/1873—Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/23—Disc-shaped record carriers characterised in that the disc has a specific layer structure
    • G11B2220/235—Multilayer discs, i.e. multiple recording layers accessed from the same side
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs

Definitions

  • the present invention relates to a data recording/reproducing method and a data recording/reproducing apparatus, and more particularly, to a method and apparatus of using a spare area of a recording medium during data recording/reproduction and a recording medium that can record/reproduce data using the method and apparatus.
  • a recording medium having high capacity has appeared.
  • Examples of such a recording medium include a Blu-ray disc and a near field recording medium.
  • a multilayered recording medium having a plurality of recording layers has appeared.
  • the present invention is directed to a recording medium, a data recording/reproducing method and a data recording/reproducing apparatus, which substantially obviate one or more problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide a method and apparatus of efficiently using a spare area of a recording medium during data recording/reproduction.
  • a recording medium comprises a data zone where user data are recorded; an inner zone located at an inner circumference of the data zone; and an outer zone located at an outer circumference of the data zone, wherein the data zone includes a spare area and a user data area, and the user data are recorded in the order of a use direction of the spare area, the use direction being the same as a recording direction of the data.
  • the spare area includes an inner spare area located at an inner circumference of the user data area and an outer spare area located at an outer circumference of the user data area, at least one of the inner zone and the outer zone includes a management area, management information including size information of the spare area is recorded in the management area, and the size information of the spare area includes size information of the inner spare area included in a first layer; size information of the outer spare area; and size information of the inner spare area included in the other layers excluding the first layer.
  • the spare area includes the management area, and the management information includes size information of the management area included in the spare area.
  • the size information of the management area included in the spare area includes size information of the management area included in the inner spare area of the first layer; size information of the management area included in the outer spare area; and size information of the management area included in the inner spare area of the other layers excluding the first layer.
  • a data recording method for recording data in a spare area of a recording medium comprises recording the data in the spare area in the order of a use direction of the spare area, wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
  • the spare area has a size that cannot be enlarged or reduced.
  • a data reproducing method for reproducing data recorded in a spare area of a recording medium comprises reading the recorded data from the spare area in the order of a use direction of the spare area, wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
  • the spare area has a size that cannot be enlarged or reduced.
  • a data recording apparatus for recording data in a spare area of a recording medium comprises a pickup recording the data in the recording medium; and a controller controlling the pickup to record the data in the spare area in the order of a use direction of the spare area, wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
  • the recording direction of the data is a moving direction of the pickup.
  • the spare area has a size that cannot be enlarged or reduced.
  • a data reproducing apparatus for reproducing data recorded in a spare area of a recording medium comprises a pickup reading the data recorded in the recording medium; and a controller controlling the pickup to read the recorded data from the spare area in the order of a use direction of the spare area, wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
  • the recording direction of the data is a moving direction of the pickup.
  • the spare area has a size that cannot be enlarged or reduced.
  • a spare area of a recording medium can be used efficiently. Also, size information of the spare area of the recording medium and size information of a temporary disc management area included in the spare area can be searched efficiently.
  • FIG. 1 is a schematic diagram illustrating a structure of a recording medium according to the embodiment of the present invention
  • FIG. 2 is a diagram illustrating a case where a use direction of a spare area is the same as a data recording direction in accordance with the embodiment of the present invention
  • FIG. 3 is a diagram illustrating a case where a use direction of a spare area is contrary to a data recording direction in accordance with the embodiment of the present invention
  • FIG. 4 is a diagram illustrating a use direction of a spare area according to the first embodiment of the present invention.
  • FIG. 5 and FIG. 6 are diagrams illustrating a use direction of a spare area according to the second embodiment of the present invention.
  • FIG. 7 is a diagram illustrating a temporary disc definition structure (TDDS) or a disc definition structure (DDS) according to the embodiment of the present invention
  • FIG. 8 is a diagram illustrating a temporary disc definition structure (TDDS) of a one time recordable recording medium in accordance with the embodiment of the present invention.
  • TDDS temporary disc definition structure
  • FIG. 9 is a block diagram illustrating a data recording/reproducing apparatus according to the embodiment of the present invention.
  • a recording medium means every medium where data are recorded or can be recorded.
  • the recording medium is a comprehensive term of all media regardless of recording type, such as disc and magnetic tape.
  • disc especially, Blu-ray disc (BD) will be described as a recording medium.
  • BD Blu-ray disc
  • BD blu-ray discs
  • BD-R one-time recordable type
  • BD-RE re-recordable type
  • the recording medium of the present invention is configured in a certain unit.
  • the recording medium can include a unit called cluster.
  • the cluster can include a data frame which is a lower unit.
  • one cluster may include 32 data frames.
  • name of each unit and the number of units may be varied depending on types of the recording medium.
  • FIG. 1 is a schematic diagram illustrating a structure of a recording medium 10 according to the embodiment of the present invention.
  • FIG. 1 illustrates a quadruple layer recording medium 10 of four layers L0, L1, L2, and L3.
  • the present invention is not limited to the quadruple layer recording medium but applicable to every recording medium 10 having two layers or more as well as a single layer. Since the respective layers can be configured in the same structure, the first layer L0 will be described herein.
  • the recording medium 10 of the present invention includes an inner zone 210, an outer zone 230, and a data zone 220.
  • the inner zone 210 is located at the inner circumference of the recording medium 10, and the outer zone 230 is located at the outer circumference of the recording medium 10, wherein various kinds of information for controlling the recording medium 10 is stored in the outer zone 230.
  • the inner zone 210 and the outer zone 230 include a temporary disc management area (TDMA) or a disc management area (DMA). Structural information and defect address information of the recording medium are recorded in the temporary disc management area (TDMA) or the disc management area (DMA).
  • the data zone 220 can include an inner spare area (ISA) 221, an outer spare area (OSA) 223, and a user data area 222.
  • ISA inner spare area
  • OSA outer spare area
  • TDMA temporary disc management area
  • the defective replacement information means data of an area where a defect occurs in the user data area 222, especially means data transferred to the spare areas 221 and 223 and recorded therein. Accordingly, if a defect occurs in the user data area 222, the data recording apparatus records the defective replacement information, which is data of the area where a defect occurs, in the spare areas 221 and 223. And, the data reproducing apparatus reproduces the defective replacement information recorded in the spare areas 221 and 223 by using defective address information that includes address information of the spare areas 221 and 223 where the defective replacement information is recorded.
  • the defective address information of the present invention is recorded in the aforementioned temporary disc management area (TDMA) or disc management area (DMA).
  • the size of the spare areas 221 and 223 can be enlarged or reduced. In the case that the size of the spare areas 221 and 223 is enlarged, a part of the user data area 222 adjacent to the spare areas 221 and 223 is changed to the spare areas 221 and 223. In the case that the size of the spare areas 221 and 223 is reduced, a part of the spare areas 221 and 223 adjacent to the user data area 222 is changed to the user data area 222.
  • FIG. 1 illustrates two spare areas (inner spare area and outer spare area). However, arrangement and the number of spare areas are only examples, and various modifications can be made in the spare areas within the range that does not depart from spirits of the present invention.
  • FIG. 2 and FIG. 3 illustrate that defective replacement information is recorded in the spare areas 221 and 223, additional information of the recording medium 10 may be recorded therein in the same manner.
  • FIG. 2 and FIG. 3 illustrate that defective replacement information is recorded in the spare areas 221 and 223, the defective replacement information may be reproduced therein in the same manner.
  • data 1, 2, 3 and 4 recorded in the user data area 222 are defect data recorded in an area where a defect occurs, and data 1, 2, 3 and 4 recorded in the spare areas 221 and 223 are defective replacement information. Data of each corresponding number are configured equally.
  • a use direction of the spare areas 221 and 223 can be configured in the same manner as a data recording direction of the recording medium 10.
  • the use direction of the spare areas 221 and 223 may be configured in contrary to the data recording direction of the recording medium 10.
  • the use direction of the spare areas 221 and 223 means a direction of the order of data recorded in the spare areas 221 and 223. Namely, if the use direction of the spare areas 221 and 223 is from the inner circumference to the outer circumference of the recording medium 10, the data recorded in the spare areas 221 and 223 are recorded in the order from the inner circumference to the outer circumference of the recording medium 10. Viewed from the drawings, the data 1, 2, 3 and 4 are recorded in due order in the use direction of the spare areas 221 and 223.
  • the data recording direction of the recording medium 10 means a direction of data recorded in the recording medium 10, especially means a direction of data recorded in the recording medium 10 by a recording unit such as a pickup which will be described later.
  • a method of recording/reproducing data of the spare areas 221 and 223 in the data recording/reproducing apparatus is varied depending on the relation between the use direction of the spare areas 221 and 223 and the data recording/reproducing direction. Namely, the method of recording/reproducing data of the spare areas 221 and 223 in the data recording/reproducing apparatus is varied depending on that the use direction of the spare areas 221 and 223 is the same as or contrary to the data recording/reproducing direction.
  • FIG. 2 is a diagram illustrating a case where a use direction of a spare area is the same as a data recording direction in accordance with the embodiment of the present invention.
  • the data recording apparatus can record defective replacement information continuously in the data recording direction.
  • FIG. 3 is a diagram illustrating a case where a use direction of the spare areas 221 and 223 is contrary to a data recording direction in accordance with the embodiment of the present invention.
  • the data recording apparatus fails to record data in the spare areas 221 and 223 continuously. As shown, the data recording apparatus should record data in due order to conform to the use direction of the spare areas 221 and 223.
  • a recording unit that records data in the recording medium 10 needs to move frequently.
  • the data recording apparatus needs much time to record data in the spare areas 221 and 223 due to frequent movement of the recording unit.
  • the use direction of the spare areas 221 and 223 in the recording medium 10 of the present invention will be described based on the relation between the use direction of the spare areas 221 and 223 and the data recording direction.
  • FIG. 4 is a diagram illustrating a use direction of spare areas 221 and 223 according to the first embodiment of the present invention.
  • FIG. 4 illustrates the use direction of the spare areas 221 and 223 based on a quadruple layer recording medium 10 having four layers
  • the use direction of the spare areas 221 and 223 may be applied to the recording medium 10 having three or more layers.
  • the use direction of the spare areas 221 and 223 is configured in such a manner that the inner spare area 221 is used from the inner circumference of the recording medium 10 to the outer circumference while the outer spare area 223 is used from the outer circumference of the recording medium 10 to the inner circumference.
  • the use direction of the spare areas 221 and 223 is configured toward the user data area 222.
  • the data recording direction is configured in such a manner that layer L0 is directed from the inner circumference to the outer circumference, layer L1 is directed from the outer circumference to the inner circumference, and layer L2 is directed from the inner circumference to the outer circumference.
  • the data recording direction is configured in such a manner that the even numbered layers L0, L2,... are directed from the inner circumference to the outer circumference while the odd numbered layers L1, L3,... are directed from the outer circumference to the inner circumference.
  • the use direction of the spare areas 221 and 223 and the data recording direction are configured equally in an inner spare area ISA0 of the layer L0, an outer spare area OSA1 of the layer L1, an inner spare area ISA2 of the layer L2, and an outer spare area OSA3 of the layer L3.
  • the use direction of the spare areas 221 and 223 and the data recording direction are configured contrary to each other in the other spare areas OSA0, ISA1, OSA2, and ISA3.
  • the data recording/reproducing apparatus can enlarge or reduce the spare areas 221 and 223 efficiently.
  • the use direction of the spare areas 221 and 223 is directed toward the user data area, there is no change in a use start point of the spare areas 221 and 223 due to enlargement or reduction of the spare areas 221 and 223. Accordingly, no additional action is required due to enlargement or reduction of the spare areas, whereby the data recording/reproducing apparatus can enlarge or reduce the spare areas 221 and 223 efficiently.
  • FIG. 5 and FIG. 6 are diagrams illustrating a use direction of spare areas 221 and 223 according to the second embodiment of the present invention.
  • FIG. 5 illustrates a use direction of the spare areas 221 and 223 in a quadruple layer recording medium 10 that includes four layers
  • FIG. 6 illustrates a use direction of the spare areas 221 and 223 in a triple layer recording medium 10 that includes three layers.
  • the use direction of the spare areas 221 and 223 is configured equally to the data recording direction of the recording medium 10.
  • the use direction of the spare areas 221 and 223 according to the second embodiment of the present invention is configured in such a manner that the even numbered layers L0, L2,... are directed from the inner circumference to the outer circumference while the odd numbered layers L1, L3,... are directed from the outer circumference to the inner circumference.
  • the data recording/reproducing apparatus can record/reproduce data in the spare areas 221 and 223 efficiently.
  • All the spare areas 221 and 223 of the recording medium 10 are configured in such a manner that the use direction of the spare areas 221 and 223 is the same as the data recording direction of the recording medium 10. Accordingly, as described with reference to FIG. 3, the data recording/reproducing apparatus can continuously record/reproduce data in the spare areas 221 and 223. This is because that a recording unit or a reproducing unit continuously moves in the data recording/reproducing apparatus.
  • the data recording/reproducing apparatus can efficiently record/reproduce defective replacement information in the spare areas 221 and 223, wherein the defective replacement information occurs as the number of layers of the recording medium 10 increases.
  • the data recording/reproducing apparatus can limit enlargement or reduction of the spare areas 221 and 223.
  • the data recording/reproducing apparatus needs to move data recorded in the corresponding spare areas 221 and 223. In this case, much time is required during data recording/reproduction due to movement of the data recorded in the spare areas 221 and 223.
  • the data recording/reproducing apparatus can limit enlargement or reduction of the spare areas 221 and 223.
  • the size of the spare areas 221 and 223 is fixed. Namely, the size of the spare areas 221 and 223, which is determined by the data recording/reproducing apparatus during formatting of the recording medium 10, is not changed.
  • the general management information of the recording medium 10 includes size information of the spare areas 221 and 223 of the recording medium 10.
  • the general management information of the recording medium 10 includes a temporary disc definition structure (TDDS) or a disc definition structure (DDS).
  • TDDS temporary disc definition structure
  • DDS disc definition structure
  • TDDS temporary disc definition structure
  • DDS disc definition structure
  • TDMA temporary disc management area
  • FIG. 7 is a diagram illustrating a temporary disc definition structure (TDDS) or a disc definition structure (DDS) according to the embodiment of the present invention.
  • FIG. 7 illustrates the temporary disc definition structure (TDDS) or the disc definition structure (DDS) based on the quadruple layer recording medium 10 having four layers, the temporary disc definition structure (TDDS) or the disc definition structure (DDS) can be applied equally to other multi-layer recording medium 10.
  • the temporary disc definition structure (TDDS) or the disc definition structure (DDS) includes size information of the spare areas 221 and 223 included in the recording medium 10.
  • the size information of the spare areas 221 and 223 includes size information of the inner spare area ISA0 of the first layer L0, size information of the outer spare area OSA, and size information of the inner spare areas ISA1 ⁇ 3 of the other layers excluding the first layer L0.
  • size information of the inner spare area ISA0 of the first layer L0, size information of the outer spare area OSA, and size information of the inner spare areas ISA1 ⁇ 3 of the other layers excluding the first layer L0 are recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS).
  • size information of the inner spare area ISA0 of the first layer L0 is recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS), for example, the 40th byte of the 31st frame.
  • the size information of the inner spare area ISA0 of the first layer L0 can be recorded at a size of 4 bytes.
  • size information of the outer spare area OSA is recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS), for example, the 44th byte of the 31st frame.
  • the size information of the outer spare area can be recorded at a size of 4 bytes.
  • size information of the inner spare areas ISA1 ⁇ 3 of the other layers excluding the first layer L0 is recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS), for example, the 48th byte of the 31st frame.
  • the size information of the inner spare areas ISA1 ⁇ 3 of the other layers excluding the first layer L0 can be recorded at a size of 4 bytes. Accordingly, the data reproducing apparatus can read size information of the spare areas 221 and 223 from the temporary disc definition structure (TDDS) or the disc definition structure (DDS) recorded in the inner zone 210 or the outer zone 230. Since size information of the inner spare area ISA of the first layer L0 is configured separately in the size information of the spare areas 221 and 223, the data recording/reproducing apparatus can quickly read the size information of the first spare area of the recording medium 10.
  • the temporary disc management area (TDMA) is included in the inner zone 210. Also, the temporary disc management area (TDMA) can be included in the spare areas 221 and 223.
  • the size information of the temporary disc management area (TDMA) included in the spare areas 221 and 223 is recorded in the temporary disc definition structure (TDDS).
  • the temporary disc definition structure (TDDS) that includes size information of the temporary disc management area (TDMA) included in the spare areas 221 and 223 will be described.
  • FIG. 8 is a diagram illustrating a temporary disc definition structure (TDDS) of a one time recordable recording medium in accordance with the embodiment of the present invention.
  • TDDS temporary disc definition structure
  • FIG. 8 illustrates the size of the temporary disc management area (TDMA) included in the spare areas 221 and 223 is the same as the size of the spare areas 221 and 223, the temporary disc management area (TDMA) may be configured as a part of the spare areas 221 and 223.
  • the size information of the temporary disc management area (TDMA) included in the spare areas 221 and 223 in accordance with this embodiment includes size information of the temporary disc management area (TDMA) included in the inner spare area ISA0 of the first layer L0, size information of the temporary disc management area (TDMA) included in the outer spare area OSA, and size information of the temporary disc management area (TDMA) included in the inner spare areas ISA1 ⁇ 3 of the other layers excluding the first layer L0.
  • size information of the temporary disc management area (TDMA) included in the inner spare area ISA0 of the first layer L0, size information of the temporary disc management area (TDMA) included in the outer spare area OSA, and size information of the temporary disc management area (TDMA) included in the inner spare areas ISA1 ⁇ 3 of the other layers excluding the first layer L0 are recorded in the temporary disc definition structure (TDDS) of the present invention.
  • size information of the temporary disc management area (TDMA) included in the inner spare area ISA0 of the first layer L0 is recorded in the temporary disc definition structure (TDDS) of the present invention, for example, the 1040th byte of the 31st frame.
  • the size information of the temporary disc management area (TDMA) included in the inner spare area ISA0 of the first layer L0 can be recorded at a size of 4 bytes.
  • size information of the temporary disc management area (TDMA) included in the outer spare area OSA is recorded in the temporary disc definition structure (TDDS) of the present invention, for example, the 1044th byte of the 31st frame.
  • the size information of the temporary disc management area (TDMA) included in the outer spare area can be recorded at a size of 4 bytes.
  • size information of the temporary disc management area (TDMA) included in the inner spare areas ISA1 ⁇ 3 of the other layers excluding the first layer L0 is recorded in the temporary disc definition structure (TDDS) of the present invention, for example, the 1048th byte of the 31st frame.
  • the size information of the temporary disc management area (TDMA) included in the inner spare areas ISA1 ⁇ 3 of the other layers excluding the first layer L0 can be recorded at a size of 4 bytes.
  • FIG. 9 is a block diagram illustrating a data recording/reproducing apparatus according to the embodiment of the present invention.
  • a pickup 70 includes a laser diode therein to record data on a surface of the recording medium 10 or read a signal reflected from the recording medium 10.
  • a servo 90 controls tracking and focusing operation of the pickup 70 and operation of a spindle motor 110.
  • a radio/frequency (R/F) unit 80 generates a focus error signal and a tracking error signal, which are signals for detecting focus deviation and track deviation of a laser beam using a signal output from the pickup 70.
  • the spindle motor 110 rotates a disc mounted in the data recording/reproducing apparatus.
  • a motor driving unit 100 drives the pickup 70 and the spindle motor 110 under the control of the servo 90.
  • a signal processor 40 recovers the signal received from the R/F unit 80 to a desired reproducing signal value, or modulates a data signal, which is to be recorded, to a recordable format.
  • a bit encoder 50 converts the recording signal output from the signal processor 40 into a bit stream
  • a pickup driving unit 60 converts the bit stream generated by the bit encoder 50 into an optical signal, which is to be stored in the recording medium 10.
  • a memory 140 temporarily stores information related to the recording medium 10 including defect information of the recording medium 10 or performs a buffer function for temporarily storing data to be recorded or reproduced in the recording medium 10.
  • a microcomputer 120 is configured to control the signal processor 40, the servo 90, and the memory 140, and controls a drive, which includes structural elements, to record or reproduce data.
  • the use direction of the spare areas 221 and 223 can be set to one of the following two cases.
  • the use direction of the spare areas 221 and 223 can be configured toward the use data area 222.
  • the use direction of the spare areas 221 and 223 can be configured equally to the data recording direction of the recording medium 10.
  • the microcomputer 120 generates a temporary disc definition structure (TDDS) or a disc definition structure (DDS), which includes size information of the spare areas 221 and 223 of the recording medium 10. And, the microcomputer 120 controls the pickup 70 to record the generated temporary disc definition structure (TDDS) or disc definition structure (DDS) in the temporary disc management area (TDMA) or the disc management area (DMA).
  • TDDS temporary disc definition structure
  • DDS disc definition structure
  • Size information of the inner spare area ISA of the first layer, size information of the outer spare area OSA, and size information of the inner spare areas of the other layers excluding the first layer are recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS) of the present invention.
  • the microcomputer 120 generates a temporary disc definition structure (TDDS), which includes size information of the temporary disc management area (TDMA) included in the spare areas 221 and 223, in the one time recordable recording medium 10. And, the microcomputer 120 controls the pickup 70 to record the generated temporary disc definition structure (TDDS) in the temporary disc management area (TDMA).
  • TDDS temporary disc definition structure
  • TDMA temporary disc management area
  • Size information of the temporary disc management area (TDMA) included in inner spare area ISA of the first layer, size information of the temporary disc management area (TDMA) included in the outer spare area OSA, and size information of the temporary disc management area (TDMA) included in the inner spare areas ISA of the other layers excluding the first layer are recorded in the temporary disc definition structure (TDDS) of the present invention.
  • the microcomputer 120 is shown, but not limited to, by one element in the present invention. The functions of the microcomputer 120 may be performed by several elements in conjunction with one another.
  • the microcomputer 120 can be integrated into a host 130. Also, the microcomputer 120 may additionally be connected with a drive that includes the signal processor 40, the bit encoder 50, the pickup driving unit 60, the pickup 70, the servo 90, the motor driving unit 100, the spindle motor 110, the microcomputer 120, and the memory 140, whereby the microcomputer 120 may be implemented to be updated.
  • the host 130 serves to control all elements within the data recording/reproducing apparatus, and controls recording or reproduction of the recording medium 10 by interfacing with a user. Specifically, the host 130 transfers a command, which allows the data recording/reproducing apparatus of the present invention to perform a specific function, to the microcomputer 120, and the microcomputer 120 controls elements, which are configured within the data recording/reproducing apparatus in conjunction with one another, in accordance with the command.
  • the microcomputer 120 and the host 130 may be operated separately. Alternatively, the functions of the microcomputer 120 and the host 130 may be integrated into one control unit 150.
  • the host 130 could be a main controller of a computer, server, audio device or vide device.
  • the data recording/reproducing apparatus of the present invention could be either an optical drive provided to a personal computer (PC), or a player which is not mounted in the PC.
  • the data recording/reproducing apparatus of the present invention can be applied to both an optical drive mounted into a PC and a player used as a separate product.
  • an AV encoder 20 converts an input signal into a signal of a specific format that can be recorded in the recording medium 10 and transmits the signal to the signal processor 40, so as to record data in the recording medium 10.
  • the AV encoder 20 can encode the input signal into MPEG format signal.
  • the signal processor 40 converts the signal encoded from the AV encoder 20 into a format that can be recorded in the recording medium 10 by adding an error correction code (ECC) thereto and transfers the converted signal to the bit encoder 50.
  • ECC error correction code
  • an AV decoder 30 finally decodes the reproducing signal of the recording medium 10, which is transmitted from the signal processor, and provides the decoded signal to the user as output data such as video or audio signal.
  • the elements of the aforementioned data recording/reproducing apparatus according to the present invention may be implemented as either software or hardware to perform their respective functions, or software and hardware in combination.
  • the spare areas of the recording medium can be used efficiently. Also, the size information of the spare areas of the recording medium and the size information of the temporary disc management area included in the spare areas can be searched efficiently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

A recording medium, a data recording/reproducing method and a data recording/reproducing apparatus are disclosed. A recording medium comprises a data zone where user data are recorded; an inner zone located at an inner circumference of the data zone; and an outer zone located at an outer circumference of the data zone, wherein the data zone includes a spare area and a user data area, and the user data are recorded in the order of a use direction of the spare area, the use direction being the same as a recording direction of the data. The spare areas of the recording medium can be used efficiently.

Description

RECORDING MEDIUM, DATA RECORDING/REPRODUCING METHOD, AND DATA RECORDING/REPRODUCING APPARATUS
The present invention relates to a data recording/reproducing method and a data recording/reproducing apparatus, and more particularly, to a method and apparatus of using a spare area of a recording medium during data recording/reproduction and a recording medium that can record/reproduce data using the method and apparatus.
Recently, with the rapid development of technology, a recording medium having high capacity has appeared. Examples of such a recording medium include a Blu-ray disc and a near field recording medium. Also, in order to increase capacity of the recording medium, a multilayered recording medium having a plurality of recording layers has appeared.
If such a recording medium having high capacity/multiple layers is used, a spare area where additional information or defective replacement information of the recording medium is recorded is dispersed in several recording layers and its size becomes great. Accordingly, a method of efficiently using a spare area of a recording medium will be required.
Accordingly, the present invention is directed to a recording medium, a data recording/reproducing method and a data recording/reproducing apparatus, which substantially obviate one or more problems due to limitations and disadvantages of the related art.
An object of the present invention is to provide a method and apparatus of efficiently using a spare area of a recording medium during data recording/reproduction.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a recording medium according to the present invention comprises a data zone where user data are recorded; an inner zone located at an inner circumference of the data zone; and an outer zone located at an outer circumference of the data zone, wherein the data zone includes a spare area and a user data area, and the user data are recorded in the order of a use direction of the spare area, the use direction being the same as a recording direction of the data.
Also, the spare area includes an inner spare area located at an inner circumference of the user data area and an outer spare area located at an outer circumference of the user data area, at least one of the inner zone and the outer zone includes a management area, management information including size information of the spare area is recorded in the management area, and the size information of the spare area includes size information of the inner spare area included in a first layer; size information of the outer spare area; and size information of the inner spare area included in the other layers excluding the first layer.
The spare area includes the management area, and the management information includes size information of the management area included in the spare area.
The size information of the management area included in the spare area includes size information of the management area included in the inner spare area of the first layer; size information of the management area included in the outer spare area; and size information of the management area included in the inner spare area of the other layers excluding the first layer.
In another aspect of the present invention, a data recording method for recording data in a spare area of a recording medium comprises recording the data in the spare area in the order of a use direction of the spare area, wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
The spare area has a size that cannot be enlarged or reduced.
In still another aspect of the present invention, a data reproducing method for reproducing data recorded in a spare area of a recording medium comprises reading the recorded data from the spare area in the order of a use direction of the spare area, wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
The spare area has a size that cannot be enlarged or reduced.
In further still another aspect of the present invention, a data recording apparatus for recording data in a spare area of a recording medium comprises a pickup recording the data in the recording medium; and a controller controlling the pickup to record the data in the spare area in the order of a use direction of the spare area, wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
The recording direction of the data is a moving direction of the pickup.
The spare area has a size that cannot be enlarged or reduced.
In further still another aspect of the present invention, a data reproducing apparatus for reproducing data recorded in a spare area of a recording medium comprises a pickup reading the data recorded in the recording medium; and a controller controlling the pickup to read the recorded data from the spare area in the order of a use direction of the spare area, wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
The recording direction of the data is a moving direction of the pickup.
The spare area has a size that cannot be enlarged or reduced.
It is to be understood that the advantages that can be obtained by the present invention are not limited to the aforementioned advantages and other advantages which are not mentioned will be apparent from the following description to the person with an ordinary skill in the art to which the present invention pertains.
According to the data recording/reproducing method and the data recording/reproducing apparatus of the present invention, a spare area of a recording medium can be used efficiently. Also, size information of the spare area of the recording medium and size information of a temporary disc management area included in the spare area can be searched efficiently.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating a structure of a recording medium according to the embodiment of the present invention;
FIG. 2 is a diagram illustrating a case where a use direction of a spare area is the same as a data recording direction in accordance with the embodiment of the present invention;
FIG. 3 is a diagram illustrating a case where a use direction of a spare area is contrary to a data recording direction in accordance with the embodiment of the present invention;
FIG. 4 is a diagram illustrating a use direction of a spare area according to the first embodiment of the present invention;
FIG. 5 and FIG. 6 are diagrams illustrating a use direction of a spare area according to the second embodiment of the present invention;
FIG. 7 is a diagram illustrating a temporary disc definition structure (TDDS) or a disc definition structure (DDS) according to the embodiment of the present invention;
FIG. 8 is a diagram illustrating a temporary disc definition structure (TDDS) of a one time recordable recording medium in accordance with the embodiment of the present invention; and
FIG. 9 is a block diagram illustrating a data recording/reproducing apparatus according to the embodiment of the present invention.
Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
The terms used in the present invention are selected from generally known and used terms considering their functions in the present invention. However, in special case, the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Accordingly, the terms used herein should be understood not simply by the actual terms used but by the meaning lying within and the description disclosed herein.
In the present invention, a recording medium means every medium where data are recorded or can be recorded. For example, the recording medium is a comprehensive term of all media regardless of recording type, such as disc and magnetic tape. Hereinafter, for convenience of description, disc, especially, Blu-ray disc (BD) will be described as a recording medium. However, it will be apparent that technical spirits of the present invention are applicable to other recording media.
Also, in the present invention, among blu-ray discs (BD), a one-time recordable type (BD-R) recording medium or a re-recordable type (BD-RE) recording medium will be described. However, it will be apparent that technical spirits of the present invention are applicable to other type recording media.
Furthermore, the recording medium of the present invention is configured in a certain unit. For example, the recording medium can include a unit called cluster. The cluster can include a data frame which is a lower unit. For example, one cluster may include 32 data frames. However, name of each unit and the number of units may be varied depending on types of the recording medium.
FIG. 1 is a schematic diagram illustrating a structure of a recording medium 10 according to the embodiment of the present invention.
FIG. 1 illustrates a quadruple layer recording medium 10 of four layers L0, L1, L2, and L3. However, the present invention is not limited to the quadruple layer recording medium but applicable to every recording medium 10 having two layers or more as well as a single layer. Since the respective layers can be configured in the same structure, the first layer L0 will be described herein.
The recording medium 10 of the present invention includes an inner zone 210, an outer zone 230, and a data zone 220.
The inner zone 210 is located at the inner circumference of the recording medium 10, and the outer zone 230 is located at the outer circumference of the recording medium 10, wherein various kinds of information for controlling the recording medium 10 is stored in the outer zone 230. For example, the inner zone 210 and the outer zone 230 include a temporary disc management area (TDMA) or a disc management area (DMA). Structural information and defect address information of the recording medium are recorded in the temporary disc management area (TDMA) or the disc management area (DMA).
Data desired by a user are stored in the data zone 220. A part surrounded by the inner zone 210 and the outer zone 230 on the recording medium 10 becomes the zone in which data are actually recorded. The data zone 220 can include an inner spare area (ISA) 221, an outer spare area (OSA) 223, and a user data area 222.
Additional information and defective replacement information of the recording medium 10 are recorded in the spare areas 221 and 223. Also, the aforementioned temporary disc management area (TDMA) can be included in the spare areas 221 and 223.
The defective replacement information means data of an area where a defect occurs in the user data area 222, especially means data transferred to the spare areas 221 and 223 and recorded therein. Accordingly, if a defect occurs in the user data area 222, the data recording apparatus records the defective replacement information, which is data of the area where a defect occurs, in the spare areas 221 and 223. And, the data reproducing apparatus reproduces the defective replacement information recorded in the spare areas 221 and 223 by using defective address information that includes address information of the spare areas 221 and 223 where the defective replacement information is recorded. The defective address information of the present invention is recorded in the aforementioned temporary disc management area (TDMA) or disc management area (DMA).
In the re-recordable recording medium 10, the size of the spare areas 221 and 223 can be enlarged or reduced. In the case that the size of the spare areas 221 and 223 is enlarged, a part of the user data area 222 adjacent to the spare areas 221 and 223 is changed to the spare areas 221 and 223. In the case that the size of the spare areas 221 and 223 is reduced, a part of the spare areas 221 and 223 adjacent to the user data area 222 is changed to the user data area 222.
FIG. 1 illustrates two spare areas (inner spare area and outer spare area). However, arrangement and the number of spare areas are only examples, and various modifications can be made in the spare areas within the range that does not depart from spirits of the present invention.
Hereinafter, a method of recording data in spare areas 221 and 223 in accordance with a use direction of the spare areas 221 and 223 and a data recording direction of the recording medium 10 will be described with reference to FIG. 2 and FIG. 3.
Although FIG. 2 and FIG. 3 illustrate that defective replacement information is recorded in the spare areas 221 and 223, additional information of the recording medium 10 may be recorded therein in the same manner.
Also, although FIG. 2 and FIG. 3 illustrate that defective replacement information is recorded in the spare areas 221 and 223, the defective replacement information may be reproduced therein in the same manner.
In the drawings, data 1, 2, 3 and 4 recorded in the user data area 222 are defect data recorded in an area where a defect occurs, and data 1, 2, 3 and 4 recorded in the spare areas 221 and 223 are defective replacement information. Data of each corresponding number are configured equally.
A use direction of the spare areas 221 and 223 can be configured in the same manner as a data recording direction of the recording medium 10. The use direction of the spare areas 221 and 223 may be configured in contrary to the data recording direction of the recording medium 10.
The use direction of the spare areas 221 and 223 means a direction of the order of data recorded in the spare areas 221 and 223. Namely, if the use direction of the spare areas 221 and 223 is from the inner circumference to the outer circumference of the recording medium 10, the data recorded in the spare areas 221 and 223 are recorded in the order from the inner circumference to the outer circumference of the recording medium 10. Viewed from the drawings, the data 1, 2, 3 and 4 are recorded in due order in the use direction of the spare areas 221 and 223.
The data recording direction of the recording medium 10 means a direction of data recorded in the recording medium 10, especially means a direction of data recorded in the recording medium 10 by a recording unit such as a pickup which will be described later.
A method of recording/reproducing data of the spare areas 221 and 223 in the data recording/reproducing apparatus is varied depending on the relation between the use direction of the spare areas 221 and 223 and the data recording/reproducing direction. Namely, the method of recording/reproducing data of the spare areas 221 and 223 in the data recording/reproducing apparatus is varied depending on that the use direction of the spare areas 221 and 223 is the same as or contrary to the data recording/reproducing direction.
FIG. 2 is a diagram illustrating a case where a use direction of a spare area is the same as a data recording direction in accordance with the embodiment of the present invention.
In the case that the use direction of the spare areas 221 and 223 is the same as the data recording direction, a direction of the order of data recorded in the spare areas 221 and 223 is the same as the data recording direction. Accordingly, the data recording apparatus can record defective replacement information continuously in the data recording direction.
FIG. 3 is a diagram illustrating a case where a use direction of the spare areas 221 and 223 is contrary to a data recording direction in accordance with the embodiment of the present invention.
In the case that the use direction of the spare areas 221 and 223 is contrary to the data recording direction, the direction of the order of data recorded in the spare areas 221 and 223 becomes contrary to the data recording direction. Accordingly, the data recording apparatus fails to record data in the spare areas 221 and 223 continuously. As shown, the data recording apparatus should record data in due order to conform to the use direction of the spare areas 221 and 223.
Accordingly, in the case that the use direction of the spare areas 221 and 223 is contrary to the data recording direction, a recording unit that records data in the recording medium 10 needs to move frequently. The data recording apparatus needs much time to record data in the spare areas 221 and 223 due to frequent movement of the recording unit.
Hereinafter, the use direction of the spare areas 221 and 223 in the recording medium 10 of the present invention will be described based on the relation between the use direction of the spare areas 221 and 223 and the data recording direction.
FIG. 4 is a diagram illustrating a use direction of spare areas 221 and 223 according to the first embodiment of the present invention.
Although FIG. 4 illustrates the use direction of the spare areas 221 and 223 based on a quadruple layer recording medium 10 having four layers, the use direction of the spare areas 221 and 223 may be applied to the recording medium 10 having three or more layers.
In the first embodiment of the present invention, the use direction of the spare areas 221 and 223 is configured in such a manner that the inner spare area 221 is used from the inner circumference of the recording medium 10 to the outer circumference while the outer spare area 223 is used from the outer circumference of the recording medium 10 to the inner circumference. Namely, the use direction of the spare areas 221 and 223 is configured toward the user data area 222.
In this respect, in the multi-layer recording medium 10, the data recording direction is configured in such a manner that layer L0 is directed from the inner circumference to the outer circumference, layer L1 is directed from the outer circumference to the inner circumference, and layer L2 is directed from the inner circumference to the outer circumference. In other words, the data recording direction is configured in such a manner that the even numbered layers L0, L2,… are directed from the inner circumference to the outer circumference while the odd numbered layers L1, L3,… are directed from the outer circumference to the inner circumference.
Accordingly, in the first embodiment of the present invention, the use direction of the spare areas 221 and 223 and the data recording direction are configured equally in an inner spare area ISA0 of the layer L0, an outer spare area OSA1 of the layer L1, an inner spare area ISA2 of the layer L2, and an outer spare area OSA3 of the layer L3.
The use direction of the spare areas 221 and 223 and the data recording direction are configured contrary to each other in the other spare areas OSA0, ISA1, OSA2, and ISA3.
In the case that the use direction of the spare areas 221 and 223 is configured in accordance with the first embodiment of the present invention, the data recording/reproducing apparatus can enlarge or reduce the spare areas 221 and 223 efficiently. In other words, since the use direction of the spare areas 221 and 223 is directed toward the user data area, there is no change in a use start point of the spare areas 221 and 223 due to enlargement or reduction of the spare areas 221 and 223. Accordingly, no additional action is required due to enlargement or reduction of the spare areas, whereby the data recording/reproducing apparatus can enlarge or reduce the spare areas 221 and 223 efficiently.
FIG. 5 and FIG. 6 are diagrams illustrating a use direction of spare areas 221 and 223 according to the second embodiment of the present invention.
FIG. 5 illustrates a use direction of the spare areas 221 and 223 in a quadruple layer recording medium 10 that includes four layers, and FIG. 6 illustrates a use direction of the spare areas 221 and 223 in a triple layer recording medium 10 that includes three layers.
In the second embodiment of the present invention, the use direction of the spare areas 221 and 223 is configured equally to the data recording direction of the recording medium 10. In other words, the use direction of the spare areas 221 and 223 according to the second embodiment of the present invention is configured in such a manner that the even numbered layers L0, L2,… are directed from the inner circumference to the outer circumference while the odd numbered layers L1, L3,… are directed from the outer circumference to the inner circumference.
In the case that the use direction of the spare areas 221 and 223 is configured in accordance with the second embodiment of the present invention, the data recording/reproducing apparatus can record/reproduce data in the spare areas 221 and 223 efficiently.
All the spare areas 221 and 223 of the recording medium 10 are configured in such a manner that the use direction of the spare areas 221 and 223 is the same as the data recording direction of the recording medium 10. Accordingly, as described with reference to FIG. 3, the data recording/reproducing apparatus can continuously record/reproduce data in the spare areas 221 and 223. This is because that a recording unit or a reproducing unit continuously moves in the data recording/reproducing apparatus.
Also, if the number of layers of the recording medium 10 increases, user data areas 222 where a defect may occur increase, whereby data equivalent to defective replacement information recorded in the spare areas 221 and 223 increase. According to the second embodiment of the present invention, the data recording/reproducing apparatus can efficiently record/reproduce defective replacement information in the spare areas 221 and 223, wherein the defective replacement information occurs as the number of layers of the recording medium 10 increases.
However, in the case that the use direction of the spare areas 221 and 223 is configured in accordance with the second embodiment of the present invention, the data recording/reproducing apparatus can limit enlargement or reduction of the spare areas 221 and 223.
If the spare areas (for example, OSA0 and OSA1) of which use direction is not directed toward the data area 222 are enlarged or reduced, the use start point of the spare areas 221 and 223 is changed. Accordingly, the data recording/reproducing apparatus needs to move data recorded in the corresponding spare areas 221 and 223. In this case, much time is required during data recording/reproduction due to movement of the data recorded in the spare areas 221 and 223. As a result, in the case that the use direction of the spare areas 221 and 223 is configured in accordance with the second embodiment of the present invention, the data recording/reproducing apparatus can limit enlargement or reduction of the spare areas 221 and 223.
If the data recording/reproducing apparatus limits enlargement or reduction of the spare areas 221 and 223, the size of the spare areas 221 and 223 is fixed. Namely, the size of the spare areas 221 and 223, which is determined by the data recording/reproducing apparatus during formatting of the recording medium 10, is not changed.
As described above, general management information and defect management information of the recording medium 10 are recorded in the temporary disc management area (TDMA) or the disc management area (DMA). The general management information of the recording medium 10 includes size information of the spare areas 221 and 223 of the recording medium 10.
Also, the general management information of the recording medium 10 includes a temporary disc definition structure (TDDS) or a disc definition structure (DDS).
Hereinafter, the temporary disc definition structure (TDDS) or the disc definition structure (DDS), which includes size information of the spare areas 221 and 223 in the recording medium 10, will be described.
For reference, in case of one time recordable recording medium 10, defect management information occurring while the recording medium 10 is being used and general management information indicating the recording status of the recording medium 10 are together recorded in the temporary disc management area (TDMA). Afterwards, if the recording medium 10 is closed, data cannot be recorded in the corresponding recording medium any more, whereby latest management information within the temporary disc management area (TDMA) is moved to and recorded in the disc management area. Accordingly, management information is recorded in the temporary disc management area (TDMA) until the recording medium 10 is closed. If the recording medium 10 is closed, latest management information within the temporary disc management area (TDMA) is moved to and recorded in the disc management area (DMA). The data reproducing apparatus reproduces the corresponding recording medium 10 by using the final management information within the disc management area (DMA).
FIG. 7 is a diagram illustrating a temporary disc definition structure (TDDS) or a disc definition structure (DDS) according to the embodiment of the present invention.
Although FIG. 7 illustrates the temporary disc definition structure (TDDS) or the disc definition structure (DDS) based on the quadruple layer recording medium 10 having four layers, the temporary disc definition structure (TDDS) or the disc definition structure (DDS) can be applied equally to other multi-layer recording medium 10.
As described above, the temporary disc definition structure (TDDS) or the disc definition structure (DDS) includes size information of the spare areas 221 and 223 included in the recording medium 10.
In the present invention, the size information of the spare areas 221 and 223 includes size information of the inner spare area ISA0 of the first layer L0, size information of the outer spare area OSA, and size information of the inner spare areas ISA1~3 of the other layers excluding the first layer L0.
Accordingly, size information of the inner spare area ISA0 of the first layer L0, size information of the outer spare area OSA, and size information of the inner spare areas ISA1~3 of the other layers excluding the first layer L0 are recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS).
First of all, size information of the inner spare area ISA0 of the first layer L0 is recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS), for example, the 40th byte of the 31st frame. The size information of the inner spare area ISA0 of the first layer L0 can be recorded at a size of 4 bytes.
And, size information of the outer spare area OSA is recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS), for example, the 44th byte of the 31st frame. The size information of the outer spare area can be recorded at a size of 4 bytes.
Also, size information of the inner spare areas ISA1~3 of the other layers excluding the first layer L0 is recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS), for example, the 48th byte of the 31st frame. The size information of the inner spare areas ISA1~3 of the other layers excluding the first layer L0 can be recorded at a size of 4 bytes. Accordingly, the data reproducing apparatus can read size information of the spare areas 221 and 223 from the temporary disc definition structure (TDDS) or the disc definition structure (DDS) recorded in the inner zone 210 or the outer zone 230. Since size information of the inner spare area ISA of the first layer L0 is configured separately in the size information of the spare areas 221 and 223, the data recording/reproducing apparatus can quickly read the size information of the first spare area of the recording medium 10.
As described above, in the one time recordable recording medium 10, the temporary disc management area (TDMA) is included in the inner zone 210. Also, the temporary disc management area (TDMA) can be included in the spare areas 221 and 223.
The size information of the temporary disc management area (TDMA) included in the spare areas 221 and 223 is recorded in the temporary disc definition structure (TDDS). Hereinafter, the temporary disc definition structure (TDDS) that includes size information of the temporary disc management area (TDMA) included in the spare areas 221 and 223 will be described.
FIG. 8 is a diagram illustrating a temporary disc definition structure (TDDS) of a one time recordable recording medium in accordance with the embodiment of the present invention.
Although FIG. 8 illustrates the size of the temporary disc management area (TDMA) included in the spare areas 221 and 223 is the same as the size of the spare areas 221 and 223, the temporary disc management area (TDMA) may be configured as a part of the spare areas 221 and 223.
In the same manner as the size information of the spare areas 221 and 223 described with reference to FIG. 7, the size information of the temporary disc management area (TDMA) included in the spare areas 221 and 223 in accordance with this embodiment includes size information of the temporary disc management area (TDMA) included in the inner spare area ISA0 of the first layer L0, size information of the temporary disc management area (TDMA) included in the outer spare area OSA, and size information of the temporary disc management area (TDMA) included in the inner spare areas ISA1~3 of the other layers excluding the first layer L0.
Accordingly, size information of the temporary disc management area (TDMA) included in the inner spare area ISA0 of the first layer L0, size information of the temporary disc management area (TDMA) included in the outer spare area OSA, and size information of the temporary disc management area (TDMA) included in the inner spare areas ISA1~3 of the other layers excluding the first layer L0 are recorded in the temporary disc definition structure (TDDS) of the present invention.
First of all, size information of the temporary disc management area (TDMA) included in the inner spare area ISA0 of the first layer L0 is recorded in the temporary disc definition structure (TDDS) of the present invention, for example, the 1040th byte of the 31st frame. The size information of the temporary disc management area (TDMA) included in the inner spare area ISA0 of the first layer L0 can be recorded at a size of 4 bytes.
And, size information of the temporary disc management area (TDMA) included in the outer spare area OSA is recorded in the temporary disc definition structure (TDDS) of the present invention, for example, the 1044th byte of the 31st frame. The size information of the temporary disc management area (TDMA) included in the outer spare area can be recorded at a size of 4 bytes.
Also, size information of the temporary disc management area (TDMA) included in the inner spare areas ISA1~3 of the other layers excluding the first layer L0 is recorded in the temporary disc definition structure (TDDS) of the present invention, for example, the 1048th byte of the 31st frame. The size information of the temporary disc management area (TDMA) included in the inner spare areas ISA1~3 of the other layers excluding the first layer L0 can be recorded at a size of 4 bytes.
FIG. 9 is a block diagram illustrating a data recording/reproducing apparatus according to the embodiment of the present invention.
The entire configuration of the data recording/reproducing apparatus according to the present invention will be described.
First of all, a pickup 70 includes a laser diode therein to record data on a surface of the recording medium 10 or read a signal reflected from the recording medium 10.
A servo 90 controls tracking and focusing operation of the pickup 70 and operation of a spindle motor 110.
A radio/frequency (R/F) unit 80 generates a focus error signal and a tracking error signal, which are signals for detecting focus deviation and track deviation of a laser beam using a signal output from the pickup 70.
The spindle motor 110 rotates a disc mounted in the data recording/reproducing apparatus.
A motor driving unit 100 drives the pickup 70 and the spindle motor 110 under the control of the servo 90.
A signal processor 40 recovers the signal received from the R/F unit 80 to a desired reproducing signal value, or modulates a data signal, which is to be recorded, to a recordable format.
A bit encoder 50 converts the recording signal output from the signal processor 40 into a bit stream, and a pickup driving unit 60 converts the bit stream generated by the bit encoder 50 into an optical signal, which is to be stored in the recording medium 10.
A memory 140 temporarily stores information related to the recording medium 10 including defect information of the recording medium 10 or performs a buffer function for temporarily storing data to be recorded or reproduced in the recording medium 10.
A microcomputer 120 is configured to control the signal processor 40, the servo 90, and the memory 140, and controls a drive, which includes structural elements, to record or reproduce data.
If data are recorded or reproduced in the spare areas 221 and 223 of the recording medium 10, the use direction of the spare areas 221 and 223 can be set to one of the following two cases.
First of all, the use direction of the spare areas 221 and 223 can be configured toward the use data area 222. Second, the use direction of the spare areas 221 and 223 can be configured equally to the data recording direction of the recording medium 10.
Also, the microcomputer 120 generates a temporary disc definition structure (TDDS) or a disc definition structure (DDS), which includes size information of the spare areas 221 and 223 of the recording medium 10. And, the microcomputer 120 controls the pickup 70 to record the generated temporary disc definition structure (TDDS) or disc definition structure (DDS) in the temporary disc management area (TDMA) or the disc management area (DMA).
Size information of the inner spare area ISA of the first layer, size information of the outer spare area OSA, and size information of the inner spare areas of the other layers excluding the first layer are recorded in the temporary disc definition structure (TDDS) or the disc definition structure (DDS) of the present invention.
Also, the microcomputer 120 generates a temporary disc definition structure (TDDS), which includes size information of the temporary disc management area (TDMA) included in the spare areas 221 and 223, in the one time recordable recording medium 10. And, the microcomputer 120 controls the pickup 70 to record the generated temporary disc definition structure (TDDS) in the temporary disc management area (TDMA).
Size information of the temporary disc management area (TDMA) included in inner spare area ISA of the first layer, size information of the temporary disc management area (TDMA) included in the outer spare area OSA, and size information of the temporary disc management area (TDMA) included in the inner spare areas ISA of the other layers excluding the first layer are recorded in the temporary disc definition structure (TDDS) of the present invention.
The microcomputer 120 is shown, but not limited to, by one element in the present invention. The functions of the microcomputer 120 may be performed by several elements in conjunction with one another. The microcomputer 120 can be integrated into a host 130. Also, the microcomputer 120 may additionally be connected with a drive that includes the signal processor 40, the bit encoder 50, the pickup driving unit 60, the pickup 70, the servo 90, the motor driving unit 100, the spindle motor 110, the microcomputer 120, and the memory 140, whereby the microcomputer 120 may be implemented to be updated.
The host 130 serves to control all elements within the data recording/reproducing apparatus, and controls recording or reproduction of the recording medium 10 by interfacing with a user. Specifically, the host 130 transfers a command, which allows the data recording/reproducing apparatus of the present invention to perform a specific function, to the microcomputer 120, and the microcomputer 120 controls elements, which are configured within the data recording/reproducing apparatus in conjunction with one another, in accordance with the command.
The microcomputer 120 and the host 130 may be operated separately. Alternatively, the functions of the microcomputer 120 and the host 130 may be integrated into one control unit 150.
The host 130 could be a main controller of a computer, server, audio device or vide device. Namely, the data recording/reproducing apparatus of the present invention could be either an optical drive provided to a personal computer (PC), or a player which is not mounted in the PC.
Accordingly, the data recording/reproducing apparatus of the present invention can be applied to both an optical drive mounted into a PC and a player used as a separate product.
Also, an AV encoder 20 converts an input signal into a signal of a specific format that can be recorded in the recording medium 10 and transmits the signal to the signal processor 40, so as to record data in the recording medium 10. For example, the AV encoder 20 can encode the input signal into MPEG format signal. The signal processor 40 converts the signal encoded from the AV encoder 20 into a format that can be recorded in the recording medium 10 by adding an error correction code (ECC) thereto and transfers the converted signal to the bit encoder 50.
Also, an AV decoder 30 finally decodes the reproducing signal of the recording medium 10, which is transmitted from the signal processor, and provides the decoded signal to the user as output data such as video or audio signal.
The elements of the aforementioned data recording/reproducing apparatus according to the present invention may be implemented as either software or hardware to perform their respective functions, or software and hardware in combination.
It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the invention. Thus, the above embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the invention should be determined by reasonable interpretation of the appended claims and all change which comes within the equivalent scope of the invention are included in the scope of the invention.
Various embodiments of the present invention have been described in detail through the best mode for carrying out the invention.
According to the recording medium, the data recording/reproducing method and the data recording/reproducing apparatus of the present invention, the spare areas of the recording medium can be used efficiently. Also, the size information of the spare areas of the recording medium and the size information of the temporary disc management area included in the spare areas can be searched efficiently.

Claims (14)

  1. A recording medium comprising:
    a data zone where user data are recorded;
    an inner zone located at an inner circumference of the data zone; and
    an outer zone located at an outer circumference of the data zone,
    wherein the data zone includes a spare area and a user data area, and the user data are recorded in the order of a use direction of the spare area, the use direction being the same as a recording direction of the data.
  2. The recording medium of claim 1, wherein the spare area includes an inner spare area located at an inner circumference of the user data area and an outer spare area located at an outer circumference of the user data area,
    at least one of the inner zone and the outer zone includes a management area,
    management information including size information of the spare area is recorded in the disc management area, and
    the size information of the spare area includes:
    size information of the inner spare area included in a first layer;
    size information of the outer spare area; and
    size information of the inner spare area included in the other layers excluding the first layer.
  3. The recording medium of claim 2, wherein the spare area includes the management area, and the management information includes size information of the management area included in the spare area.
  4. The recording medium of claim 3, wherein the size information of the management area included in the spare area includes:
    size information of the management area included in the inner spare area of the first layer;
    size information of the management area included in the outer spare area; and
    size information of the management area included in the inner spare area of the other layers excluding the first layer.
  5. A data recording method for recording data in a spare area of a recording medium, the data recording method comprising:
    recording the data in the spare area in the order of a use direction of the spare area,
    wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
  6. The data recording method of claim 5, wherein the spare area has a size that cannot be enlarged or reduced.
  7. A data reproducing method for reproducing data recorded in a spare area of a recording medium, the data reproducing method comprising:
    reading the recorded data from the spare area in the order of a use direction of the spare area,
    wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
  8. The data reproducing method of claim 7, wherein the spare area has a size that cannot be enlarged or reduced.
  9. A data recording apparatus for recording data in a spare area of a recording medium, the data recording apparatus comprising:
    a pickup recording the data in the recording medium; and
    a controller controlling the pickup to record the data in the spare area in the order of a use direction of the spare area,
    wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
  10. The data recording apparatus of claim 9, wherein the recording direction of the data is a moving direction of the pickup.
  11. The data recording apparatus of claim 9, wherein the spare area has a size that cannot be enlarged or reduced.
  12. A data reproducing apparatus for reproducing data recorded in a spare area of a recording medium, the data reproducing apparatus comprising:
    a pickup reading the data recorded in the recording medium; and
    a controller controlling the pickup to read the recorded data from the spare area in the order of a use direction of the spare area,
    wherein the use direction of the spare area is the same as a recording direction of the data in the recording medium.
  13. The data reproducing apparatus of claim 12, wherein the recording direction of the data is a moving direction of the pickup.
  14. The data reproducing apparatus of claim 12, wherein the spare area has a size that cannot be enlarged or reduced.
PCT/KR2010/004740 2009-08-26 2010-07-20 Recording medium, data recording/reproducing method, and data recording/reproducing apparatus WO2011025148A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0079153 2009-08-26
KR1020090079153A KR20110021382A (en) 2009-08-26 2009-08-26 Recording medium, data recording/reproducing method, and data recording/reproducing apparatus

Publications (2)

Publication Number Publication Date
WO2011025148A2 true WO2011025148A2 (en) 2011-03-03
WO2011025148A3 WO2011025148A3 (en) 2011-04-28

Family

ID=43628528

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/004740 WO2011025148A2 (en) 2009-08-26 2010-07-20 Recording medium, data recording/reproducing method, and data recording/reproducing apparatus

Country Status (2)

Country Link
KR (1) KR20110021382A (en)
WO (1) WO2011025148A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6463024B1 (en) * 1998-12-02 2002-10-08 Lg Electronics Inc. Method for formatting an optical recording medium
US20050025004A1 (en) * 2003-07-21 2005-02-03 Park Sung Baek Recording medium, and method and apparatus for managing defective areas of recording medium
WO2005031741A1 (en) * 2003-09-30 2005-04-07 Samsung Electronics Co., Ltd. Write-once disc, method of using write-once disc, and data recording and/or reproducing apparatus
KR20080046323A (en) * 2006-11-22 2008-05-27 엘지전자 주식회사 Recording medium, method and apparatus for recording data on the recording medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6463024B1 (en) * 1998-12-02 2002-10-08 Lg Electronics Inc. Method for formatting an optical recording medium
US20050025004A1 (en) * 2003-07-21 2005-02-03 Park Sung Baek Recording medium, and method and apparatus for managing defective areas of recording medium
WO2005031741A1 (en) * 2003-09-30 2005-04-07 Samsung Electronics Co., Ltd. Write-once disc, method of using write-once disc, and data recording and/or reproducing apparatus
KR20080046323A (en) * 2006-11-22 2008-05-27 엘지전자 주식회사 Recording medium, method and apparatus for recording data on the recording medium

Also Published As

Publication number Publication date
KR20110021382A (en) 2011-03-04
WO2011025148A3 (en) 2011-04-28

Similar Documents

Publication Publication Date Title
KR100261398B1 (en) Signal recording device and method therefor
EP1230639B1 (en) Dvd-rom backwards compatible defective sector management in recordable dvd media
JP4837067B2 (en) Recording medium having data structure for managing at least one data area of recording medium, recording / reproducing method, and recording / reproducing apparatus
KR20030094855A (en) High density multi layer optical disc and method for managing a layer formatting
US20050135213A1 (en) Optically recorded data discrimination apparatus and associated methodology
US5991496A (en) Recording/reproducing apparatus and method thereof
EP1457058B1 (en) Mpeg video recording medium and reproduction apparatus
KR19980070724A (en) Digital signal editing device and method
WO2011025148A2 (en) Recording medium, data recording/reproducing method, and data recording/reproducing apparatus
WO2011052977A2 (en) Information storage medium, recording and reproducing apparatus, and recording and reproducing method
US7249233B2 (en) Method and apparatus for overwriting data in write-once recording medium
US6999390B2 (en) Optical disk and method of recording data in the same
WO2010131857A2 (en) Recording medium, data recording/reproducing method, and data recording/reproducing apparatus
CN1989554B (en) Recording medium, and method and apparatus of controlling access to the recording medium
WO2011034279A1 (en) Recording medium, data recording method, and data recording apparatus
WO2010093212A2 (en) Information storage medium, record reproducing device and record reproducing method
WO2009139557A2 (en) Recording medium, recording method and recording device, and playback method and playback device, for long-term data storage
WO2010120115A2 (en) Information storage medium, recording / playback apparatus, and recording / playback method
KR100718360B1 (en) Method for recording data of optical disc recording apparatus
KR20040089509A (en) Recording/reproducing apparatus and media access method
JP2006040454A (en) Write once optical disk device
WO2015088265A1 (en) Storage medium, reproducing apparatus and method for recording and playing image data
WO2014073872A1 (en) Optical disk and optical disk reproduction device for reproducing same
JP2006024298A (en) Recording method and recorder
US7145861B2 (en) Apparatus for recording and/or reproducing optical disk

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10812162

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10812162

Country of ref document: EP

Kind code of ref document: A2