US20040156306A1 - Optical information storage medium - Google Patents

Optical information storage medium Download PDF

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Publication number
US20040156306A1
US20040156306A1 US10/769,756 US76975604A US2004156306A1 US 20040156306 A1 US20040156306 A1 US 20040156306A1 US 76975604 A US76975604 A US 76975604A US 2004156306 A1 US2004156306 A1 US 2004156306A1
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United States
Prior art keywords
area
pit
pattern
pits
storage medium
Prior art date
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Abandoned
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US10/769,756
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English (en)
Inventor
Kyung-geun Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, KYUNG-GEUN
Publication of US20040156306A1 publication Critical patent/US20040156306A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24082—Meandering
    • 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
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates

Definitions

  • the present invention relates to a read-only optical information storage medium, and more particularly, to an optical information storage medium having a plurality of areas in which data is recorded according to different recording modulation methods or as different pit wobbles.
  • Optical discs are generally used as information storage media of optical pickup devices which record information on and/or reproduce information from the optical discs without contacting the optical discs.
  • Optical discs are classified as either compact discs (CDs) or digital versatile discs (DVDs) according to their information recording capacity.
  • CDs and DVDs further include 650 MB CD-Rs, CD-RWs, 4.7 GB DVD+RWs, and so forth.
  • optical information media are standardized and compatible with one another, rendering them economical and convenient to use.
  • Attempts to standardize storage media that are not standardized have been made.
  • the formats of new storage media have to be developed so that the new storage media are compatible with or consistent with existing storage media.
  • a conventional read-only optical disc includes a burst cutting area (BCA) 10 , a lead-in area 20 , a user data area 30 , and a lead-out area 40 .
  • Information such as a serial number of the conventional read-only optical disc is recorded as a bar code in the BCA 10 , and conventional read-only disc-related information is recorded in the lead-in area 20 .
  • the present invention provides an optical information storage medium which can maintain consistency with other types of optical information storage media and prescribe a recording pattern or recording modulation method so as to improve compatibility with a drive.
  • a read-only optical information storage medium including a plurality of areas in which data is recorded in the form of pits.
  • the pits in at least one of the plurality of areas are of a different pit pattern than pits formed in others of the plurality of areas.
  • the plurality of areas may include a burst cutting area, a lead-in area, a user data area, and a lead-out area.
  • a pattern of pits formed in the burst cutting area may be different from a pattern of pits formed in at least one of the lead-in area and the user data area.
  • the pattern of the pits formed in the burst cutting area may be one of a first straight pit row and a first pit wobble
  • the pattern of the pits formed in at least one of the lead-in area and the user data area is one of a second straight pit row that is different from the first straight pit row and a second pit wobble that is different from the first pit wobble.
  • the lead-in area may include first and second areas, pits are formed in the first area in one of a third straight pit pattern and a third pit wobble pattern, and pits may be formed in the second area in one of a fourth straight pit pattern and a fourth pit wobble pattern.
  • Each of the third straight pit pattern and the fourth straight pit pattern may be one of a single straight pit pattern, a specific straight pit pattern, or a random straight pit pattern.
  • Each of the third pit wobble and the fourth pit wobble may be one of a single pit wobble, a specific pit wobble, and a random pit wobble.
  • the user data area may include a plurality of basic recording units, and run-ins and run-outs that are respectively located before and after the basic recording units.
  • a read-only optical information storage medium including a plurality of areas in which data is recorded in the form of pits.
  • the pits in at least one of the plurality of areas are formed by a recording modulation method different from a recording modulation method used to form the pits others of the plurality of areas.
  • the plurality of areas may include a burst cutting area, a lead-in area, a user data area, and a lead-out area.
  • a recording modulation method used in the burst cutting area may be different from a recording modulation method used in at least one of the lead-in area and the user data area.
  • the recording modulation method used in the burst cutting area, the lead-in area, and the user data area may be one of a RLL (d, k) modulation method and a bi-phase modulation method.
  • At least one of the burst cutting area, the lead-in area, the user data area, and the lead-out area may be divided into a plurality of sub-areas, and the pits in the sub-areas may use different modulation methods.
  • a read-only optical information storage medium including a plurality of recording layers each having a plurality of areas in which data is recorded in the form of pits, wherein the pits in at least one of the plurality of areas are of a different pit pattern than pits formed in others of the plurality of areas.
  • FIG. 1 illustrates the overall structure of a conventional read-only optical information storage medium
  • FIG. 2A illustrates a pit row having a single straight pattern
  • FIG. 2B illustrates a pit wobble having a single pattern
  • FIG. 2C illustrates a pit row having a specific straight pattern
  • FIG. 2D illustrates a pit wobble having a specific pattern
  • FIG. 2E illustrates a pit row having a random straight
  • FIG. 2F illustrates a pit wobble having a random pattern
  • FIGS. 3A through 3D, 4 A, and 4 B illustrate a pattern of pits formed in each area of an optical information storage medium according to an embodiment of the present invention
  • FIGS. 5A and 5B are views for explaining a bi-phase modulation method
  • FIG. 6 illustrates the overall structure of an optical information storage medium according to another embodiment of the present invention.
  • FIGS. 7A, 7B, 8 A, and 8 B illustrate a pattern pits formed in each area of the optical information storage medium shown in FIG. 6;
  • FIG. 9 illustrates a recording pattern of recording units, run-ins, and run-outs in the optical information storage medium shown in FIG. 6.
  • An optical information storage medium is a read-only optical information storage medium.
  • the optical information storage medium is divided into a plurality of areas according to function or use purpose.
  • a recording modulation method or a recording pattern used in a portion of the plurality of areas is different from a recording modulation method or a recording pattern used in the remaining portion of the plurality of areas.
  • the optical information storage medium is divided into a plurality of areas according to function or use.
  • the optical information storage medium includes a BCA 10 , a lead-in area 20 , a user data area 30 , and a lead-out area 40 .
  • data is recorded as pits everywhere on the optical information storage medium.
  • the read-only optical information storage medium is consistent with a recordable optical information storage medium in that data is recorded as groove wobbles everywhere on the recordable optical information storage medium.
  • the disc-related information includes information on the type of a storage medium such as a recordable disc, write-one disc, or a read-only disc, information on the number of recording layers, information on the recording speed, and information on the size of the disc.
  • patterns of pits formed in or recording modulation methods used in the BCA 10 , the lead-in area 20 , the user data area 30 , and the lead-out area 40 are different.
  • the pattern of pits formed in the BCA 10 may be different from the patterns of pits formed in the lead-in area 20 , the user data area 30 , and the lead-out area 40 .
  • the pattern of the pits formed in the BCA 10 may be a straight pit row or a pit wobble.
  • a straight pit row has pits arranged in a straight row and a pit wobble has pits arranged in a waveform.
  • the pattern of the straight pit row and the pit wobble may be a single pattern, a specific pattern, or a random pattern.
  • the single pattern refers to a pattern in which pits of length nT are arranged at regular intervals.
  • n denotes a natural number
  • T denotes the minimum pit length.
  • the single pattern of the straight pit row refers to pits of the same length arranged in a straight row.
  • the single pattern of the pit wobble refers to pits of the same length arranged in a waveform.
  • the specific pattern indicates that a sequence of pits of different lengths is repeated. For example, a sequence of pits of lengths 3T and 6T may be repeated.
  • a sync pattern may have pits of length 9T.
  • the specific pattern of the straight pit row refers to specific pits arranged in a straight row.
  • the specific pattern of the pit wobble refers to specific pits arranged in a waveform.
  • the random pattern refers to pits of different lengths arranged at irregular intervals.
  • the random pattern of the straight pit row refers to pits of different lengths arranged in a straight row at random.
  • the random pattern of the pit wobble refers to pits of different lengths arranged in a waveform at random.
  • Pits are formed in one of the single, specific, and random patterns of the straight pit row, and the single, specific, and random patterns of the pit wobble in the BCA 10 . Pits are formed in a different pattern from that used in the BCA 10 in the lead-in area 20 and the user data area 30 .
  • pits are formable in the single pattern of the straight pit rows in the BCA 10 , and in the random pattern of the straight pit rows in the lead-in area 20 and the user data area 30 .
  • pits may be formed in the specific pattern of the straight pit rows in the BCA 10 , and in the random pattern of the straight pit rows in the lead-in area 20 and the user data area 30 .
  • pits may be formed in the signal pattern of the straight pit rows in the BCA 10 , and in the random pattern of the pit wobble in the lead-in area 20 and the user data area 30 .
  • an amplitude of pit wobbles may gradually decrease or increase.
  • a tracking servo for read-only data is generally performed according to a differential phase detect (DPD) method.
  • the DPD method is known, and thus a detailed description thereof is omitted. If read-only data is recorded in the single pattern, a DPD signal is not detected. Thus, in this case, the DPD method cannot be used.
  • information recorded in the BCA is read using only a focusing servo. Therefore, the DPD method does not affect the BCA 10 .
  • FIGS. 3A, 3C, and 3 D although pits are formed in the single pattern in the BCA 10 , it is not necessary to use the tracking servo. As a result, data is readable from the lead-in area 20 , the user data area 30 , and the lead-out area 40 , but not the BCA 10 , using the DPD method.
  • pits are formable in the random pattern of the straight pit row in the BCA 10 , and in the random pattern of the straight pit row or the random pattern of the pit wobble in the lead-in area 20 and the user data area 30 .
  • pits may be formed in the random pattern of the straight pit row in the BCA 10 , and in the random pattern of the pit wobble in the lead-in area 20 or the user data area 30 .
  • the pattern of the pits may be a “00h” pattern or a pattern containing information for representing the BCA 10 .
  • pits are formable in different pit patterns in the BCA 10 , the lead-in area 20 , and the user data area 30 .
  • pits are formable in the single pattern of the straight pit row in the BCA 10 , in the random pattern of the straight pit row in the lead-in area 20 , and in the random pattern of the pit wobble in the user data area 30 .
  • pits are formable in the specific pattern of the straight pit row in the BCA 10 , in the random pattern of the pit wobble in the lead-in area 20 , and in the random pattern of the straight pit row in the user data area 30 .
  • a recording modulation method used in the BCA 10 is a RLL (d, k) modulation method or a bi-phase modulation method, and a different recording modulation method, is used in the lead-in area 20 , the user data area 30 , and the lead-in area 40 .
  • Bi-phase modulation refers to a method of displaying data depending on whether a signal varies within a predetermined period P. For example, as shown in FIG. 5A, when the phase of a groove wobble does not change within a predetermined period P, a bit value “0” is read. When the phase of the groove wobble changes within the predetermined period P, a bit value “1” is read.
  • the bi-phase modulation method is a method of recording data depending on whether a signal varies within a given period, e.g., depending on whether the phase of a signal changes within a given period.
  • modulation of the phase of a groove wobble has been described, but various patterns may be modulated.
  • the RLL modulation method indicates how many bits of value “0” exist between two bits of value “1”.
  • RLL (d, k) indicates that the minimum number and the maximum number of bits of value “0” between two bits of value “1” are d and k, respectively.
  • the minimum number and the maximum number of bits of value “0” between two bits of value “1” are 1 and 7, respectively.
  • the recording modulation method used in the BCA 10 is different from the recording modulation methods used in the lead-in area 20 , the user data area 30 , and the lead-out area 40 .
  • the recording modulation method used in the lead-in area 20 may be different from the recording modulation methods used in the BCA 10 , the user data area 30 , and the lead-out area 40 .
  • the recording modulation method used in the lead-in area 20 may be the RLL (d, k) modulation method or the bi-phase method, and the recording modulation method used in the BCA 10 , the user data area 30 , and the lead-out area 40 may be different from the recording modulation method used in the lead-in area 20 .
  • a track pitch of the pits formed in the BCA 10 may be equal to or different from a track pitch of the pits formed in the lead-in area 20 and/or the user data area 30 .
  • An optical information storage medium is divided into a plurality of areas according to function or use.
  • a pit pattern or a recording modulation method used in a portion of the plurality of areas is different from pit patterns or recording modulation methods used in the remaining portion of the plurality of areas.
  • the lead-in area 20 may be divided into a plurality of sub-areas.
  • pits may be formed in different pit patterns or according to different modulation methods in the first area 20 a and the second area 20 b .
  • Pits are formed in the single, specific, or random pattern of the straight pit rows, or the single, specific, or random pattern of the pit wobbles in the first area 20 a .
  • Pits are formed in a pattern different from that in the first area 20 a , in the second area 20 b.
  • pits are formable in the random pattern of the straight pit rows in the first area 20 a , and in the random pattern of the pit wobbles in the second area 20 b .
  • pits are formable in the specific pattern of the straight pit rows in the first area 20 a , and in the random pattern of the straight pit rows in the second area 20 b.
  • the pit pattern used in the first area 20 a or the second area 20 b may be different from the pit patterns used in the BCA 10 and the user data area 30 .
  • pits are formed in the single pattern of the straight pit rows in the BCA 10 , in the specific pattern of the straight pit rows in the first area 20 a , and in the random pattern of the straight pit rows in the second area 20 b and the user data area 30 .
  • FIG. 8A pits are formed in the single pattern of the straight pit rows in the BCA 10 , in the specific pattern of the straight pit rows in the first area 20 a , and in the random pattern of the straight pit rows in the second area 20 b and the user data area 30 .
  • pits are formable in the single pattern of the straight pit rows in the BCA 10 , in the random pattern of the straight pit rows in the first area 20 a , in the specific pattern of the straight pit rows in the second area 20 b , and in the random pattern of the pit wobbles in the user data area 30 .
  • the user data area 30 is dividable into two or more sub-areas.
  • Pits may be formed in different pit patterns in the sub-areas, or the pit patterns used in the sub-areas may be different from a pit pattern used in the BCA 10 or the lead-in area 20 .
  • different recording modulation methods are usable in the sub-areas, or the recording modulation methods used in the sub-areas may be different from a recording modulation method used in the BCA 10 or the lead-in area 20 .
  • Run-ins 31 and run-outs 35 are located before and after the basic recording units 33 .
  • the basic recording units 33 may be physical clusters, sectors, ECC blocks, frames, or the like.
  • the run-ins 31 and the run-outs 35 are for accurately recording and/or reproducing data in the basic recording units 33 . In other words, if data is recorded in the run-ins 31 or the run-outs 35 in slightly the wrong position, the run-ins 31 and the run-outs 35 corrects the error so that data is effectively recorded and/or reproduced.
  • Pits are formable in the run-ins 31 and the run-outs 35 in the same pit pattern as that used in the user data area 30 .
  • pits are also formed in the random pattern of the straight pit row or the random pattern of the pit wobble in the run-ins 31 and the run-outs 35 .
  • the random pattern “00h” is recordable. As shown in FIG. 9, pits may be recorded as “00h” in the run-ins 31 , the basic recording units 33 , and the run-outs 35 .
  • pits may be formed in the run-ins 31 and the run-outs 35 in a different pit pattern from the user data area 30 .
  • Data is recordable in a portion of at least one of a plurality of areas of an optical information storage medium using a different recording modulation method from the remaining areas of the optical storage medium.
  • data is recordable in the first area 20 a according to the RLL (d, k) modulation method and in the second area 20 b according to the bi-phase modulation method.
  • data is recordable in the first area 20 a according to the bi-phase modulation method, and in the second area 20 b , the BCA 10 , and the user data area 30 according to the RLL (d, k) modulation method.
  • data is recordable in the first area 20 a according to the RLL (d, k) modulation method, and in the second area 20 b , the BCA 10 , and the user data area 30 according to the bi-phase modulation method.
  • the present invention is applicable to an optical information storage medium having two or more recording layers as well as to an optical information storage medium having a single recording layer.
  • the present invention is applicable to each recording layer of a multi-layer optical information storage medium.
  • an optical information storage medium ensures compatibility with a drive by prescribing a pit pattern or a recording modulation method used in a BCA, not in a data area. As a result, data reproduction efficiency can be improved and the optical information storage medium can be used conveniently. In addition, the optical information storage medium can maintain consistency with the format of a recordable optical information storage medium.

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  • Optical Recording Or Reproduction (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Holo Graphy (AREA)
US10/769,756 2003-02-03 2004-02-03 Optical information storage medium Abandoned US20040156306A1 (en)

Applications Claiming Priority (2)

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KR1020030006499A KR100727919B1 (ko) 2003-02-03 2003-02-03 광정보 저장매체
KR2003-6499 2003-02-03

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US10/769,756 Abandoned US20040156306A1 (en) 2003-02-03 2004-02-03 Optical information storage medium
US10/769,987 Abandoned US20040208112A1 (en) 2003-02-03 2004-02-03 Recording/reproducing apparatus
US10/769,986 Abandoned US20040228251A1 (en) 2003-02-03 2004-02-03 Method of recording information to and reproducing information from an optical information storage medium
US11/429,966 Expired - Lifetime US7742375B2 (en) 2003-02-03 2006-05-09 Method of recording information to and reproducing information from an optical information storage medium
US11/429,968 Abandoned US20060198289A1 (en) 2003-02-03 2006-05-09 Recording/reproducing apparatus
US12/760,097 Expired - Lifetime US8130619B2 (en) 2003-02-03 2010-04-14 Method of recording information to and reproducing information from an optical information storage medium

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Application Number Title Priority Date Filing Date
US10/769,987 Abandoned US20040208112A1 (en) 2003-02-03 2004-02-03 Recording/reproducing apparatus
US10/769,986 Abandoned US20040228251A1 (en) 2003-02-03 2004-02-03 Method of recording information to and reproducing information from an optical information storage medium
US11/429,966 Expired - Lifetime US7742375B2 (en) 2003-02-03 2006-05-09 Method of recording information to and reproducing information from an optical information storage medium
US11/429,968 Abandoned US20060198289A1 (en) 2003-02-03 2006-05-09 Recording/reproducing apparatus
US12/760,097 Expired - Lifetime US8130619B2 (en) 2003-02-03 2010-04-14 Method of recording information to and reproducing information from an optical information storage medium

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US (6) US20040156306A1 (https=)
EP (2) EP1998325A3 (https=)
JP (1) JP2006517326A (https=)
KR (1) KR100727919B1 (https=)
CN (3) CN101197146B (https=)
AT (1) ATE497238T1 (https=)
BR (1) BRPI0406460B1 (https=)
CA (1) CA2507833C (https=)
DE (1) DE602004031194D1 (https=)
MX (1) MXPA05007097A (https=)
MY (2) MY139168A (https=)
PL (1) PL377174A1 (https=)
RU (1) RU2312407C2 (https=)
SG (2) SG160206A1 (https=)
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RU2312407C2 (ru) 2007-12-10

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