WO2006031040A1 - Procede et appareil pour enregistrer des donnees dans un support d'enregistrement - Google Patents

Procede et appareil pour enregistrer des donnees dans un support d'enregistrement Download PDF

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Publication number
WO2006031040A1
WO2006031040A1 PCT/KR2005/003002 KR2005003002W WO2006031040A1 WO 2006031040 A1 WO2006031040 A1 WO 2006031040A1 KR 2005003002 W KR2005003002 W KR 2005003002W WO 2006031040 A1 WO2006031040 A1 WO 2006031040A1
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WO
WIPO (PCT)
Prior art keywords
opc
adip
area
start position
information
Prior art date
Application number
PCT/KR2005/003002
Other languages
English (en)
Inventor
Sang Woon Suh
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
Priority claimed from KR1020050008015A external-priority patent/KR101071835B1/ko
Application filed by Lg Electronics Inc. filed Critical Lg Electronics Inc.
Priority to EP05786909A priority Critical patent/EP1789959A1/fr
Priority to CN2005800296669A priority patent/CN101019173B/zh
Priority to JP2007531078A priority patent/JP2008512817A/ja
Publication of WO2006031040A1 publication Critical patent/WO2006031040A1/fr

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Classifications

    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1267—Power calibration
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/24—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording

Definitions

  • the present invention relates to a method and apparatus for recording data in a recording medium, and more particularly to a method and apparatus for determining a start position of a test area when data is recorded in the recording medium, and recording information of the start position in the recording medium.
  • an optical disc acting as a recording medium capable of recording a large amount of data therein there has been widely used an optical disc acting as a recording medium capable of recording a large amount of data therein.
  • a high-density optical recording medium capable of recording/storing high-quality video data and high-quality audio data for a long period of time, for example, a Blu-ray Disc (BD) .
  • BD Blu-ray Disc
  • the BD based on the next-generation recording medium technique has been considered to be the next-generation optical recording solution capable of storing much more data than a conventional DVD.
  • many developers have conducted intensive research into the international standard technical specification associated with the BD along with those of other digital devices.
  • the present invention is directed to a method and apparatus for recording data in a recording medium that 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 for determining a start position of a test area in a recording medium such as a BD, and maximally using a limited record area.
  • a method for recording data in a recording medium including a wobble-shaped test area includes the steps of a) determining a pre-used test area, b) searching for a current OPC start position of the test area by counting the number of wobbles at a wobble-count reference position, c) performing an Optimum Power Control (OPC) process to calculate an optimum write power at the OPC start position, and d) recording data in a data area using the calculated the optimum write power.
  • OPC Optimum Power Control
  • a method for recording data in a recording medium including a wobble- shaped test area includes the steps of a) determining a pre- used test area, b) searching for a current OPC start position of the test area identical with information of a matching table by counting the number of wobbles at a wobble-count reference position, c) performing an Optimum Power Control (OPC) process to calculate an optimum write power at the searched OPC start position, and d) recording data in a data area using the calculated the optimum write power.
  • OPC Optimum Power Control
  • a method for searching for an Optimum Power Control (OPC) start position of a recording medium including a wobble-shaped test area includes the steps of a) determining a pre-used test area in the test area, b) determining a wobble-count start reference position by checking Address In Pre-groove (ADIP) word start information, and c) searching for an OPC-performing start position of the recording medium by counting the number of wobbles at the wobble-count start reference position.
  • OPC Optimum Power Control
  • a method for searching for an Optimum Power Control (OPC) start position of a recording medium including a wobble-shaped test area includes the steps of a) determining a pre-used test area in the test area, b) determining a wobble-count start reference position by checking Address In Pre-groove (ADIP) word start information, and c) searching for an OPC-performing start position of the recording medium by counting the number of wobbles corresponding to matching table at the wobble-count start reference position.
  • OPC Optimum Power Control
  • an apparatus for recording data in a recording medium includes a memory for storing matching table information, a controller for transmitting a recording command, a recording/reproducing unit for receiving the recording command from the controller, searching for an Optimum Power Control (OPC) start position in a test area of the recording medium, performing an OPC process at the searched OPC start position to calculate an optimum write power, recording information of the calculated optimum write power, and a controller for controlling the recording/reproducing according to a command.
  • OPC Optimum Power Control
  • FIG. 1 is a single-layered optical disc structure capable of recording data therein according to the present invention
  • FIG. 2 is a dual-layered optical disc structure capable of recording data therein according to a preferred embodiment of the present invention
  • FIG. 3 is a conceptual diagram illustrating a method for performing an Optimum Power Control (OPC) process according to the present invention
  • FIG. 4 is a conceptual diagram illustrating a relationship among a cluster, an ADIP (Address In Pre-groove) word, an AUN (Address Unit Number) , an ADIP unit, and a wobble according to the present invention
  • ADIP Address In Pre-groove
  • AUN Address Unit Number
  • ADIP unit Address Unit Number
  • FIG. 5 shows a matching table among the AUN, the ADIP word, and the ADIP unit in accordance with a first preferred embodiment of the present invention
  • FIG. 6 shows an example in which a single ADIP word is composed of 83 ADIP units according to the present invention
  • FIG. 7 is a conceptual diagram illustrating a method for searching for an OPC start position using a wobble count process according to the present invention
  • FIG. 8a is a conceptual diagram illustrating a method for searching for an OPC start position using the matching table in accordance with a first preferred embodiment of the present invention
  • FIG. 8b is a conceptual diagram illustrating a method for searching for an OPC start position using the matching table in accordance with a second preferred embodiment of the present invention
  • FIG. 8c is a conceptual diagram illustrating a method for searching for an OPC start position using the matching table in accordance with a third preferred embodiment of the present invention
  • FIG. 9 is a block diagram illustrating an optical recording/reproducing device according to the present invention.
  • FIG. 10 is a flow chart illustrating a method for recording data in a recording medium using the optical recording/reproducing device according to the present invention.
  • a recording medium for use in the present invention is indicative of all recordable mediums, for example, an optical disc, and a magnetic tape, etc., according to various recording schemes.
  • the optical disc such as a BD
  • the optical disc will hereinafter be exemplarily used as the above-mentioned recording medium in the present invention.
  • Optimum Power Control (OPC) area is indicative of a predetermined area assigned to perform an OPC process in the recording medium.
  • Optimum Power control (OPC) is indicative of a predetermined process capable of calculating an optimum write power when recording data in a recordable optical disc.
  • the optical recording/reproducing device if the optical disc is loaded in a specific optical recording/reproducing device, the optical recording/reproducing device repeatedly performs a predetermined process for recording data in the OPC area of the optical disc, and reproducing the recorded data, such that it calculates an optimum write power applicable to the optical disc. Thereafter, the optical recording/reproducing device uses the calculated optimum write power when recording data in the optical disc. Therefore, the OPC area is required for the recordable optical disc.
  • Drive Calibration Zone (DCZ) area is indicative of a specific area used by an optical recording/reproducing device (or a drive) in the recording medium, and can perform not only the OPC process but also a variety of tests required for the optical recording/reproducing device.
  • the OPC area and the DCZ area are available for the OPC process.
  • the OPC area and the DCZ area are generally referred to as test area or test zone. It should be noted that the OPC performing in the OPC area be applicable to even the DCZ area.
  • FIG. 1 is a single-layered optical disc structure capable of recording data therein.
  • a single-layered BD-R capable of recording data therein is shown in FIG. 1.
  • the optical disc sequentially includes an inner area, a data area, and an outer area on the basis of a disc inner circumstance. A specific area contained in each of the inner area and the outer area is used as either a record area for recording disc management information or a test area. The data area records actual user data therein.
  • the inner area includes a PIC
  • the PIC area records disc management information as an embossed HFM (High Frequency Modulated) signal .
  • the OPC area serving as a test area is adapted to perform the OPC process.
  • the info-areas INl and IN2 record various disc management information including a Defect Management Area (DMA) .
  • a write-once BD-R further includes a Temporary- Disc Management Area (TDMA) adjacent to the OPC area.
  • TDMA Temporary- Disc Management Area
  • the BD-R records data in a groove part in a recording layer composed of a land part and the groove part.
  • the groove part is composed of an HFM- groove and a wobbled groove.
  • the wobbled groove is configured in the form of a wobbled shape using a modulation method associated with a sinusoidal wave in a groove contained in a recording layer.
  • the optical recording/reproducing device can read address information (i.e., ADIP: Address In Pre-groove) of a corresponding groove and general disc information using the above-mentioned wobbled shape.
  • ADIP Address In Pre-groove
  • FIG. 2 is a dual-layered optical disc structure capable of recording data therein according to the present invention.
  • FIG. 2 a write-once dual-layered BD-R capable of recording data therein is shown in FIG. 2.
  • one of two recording layers is referred to as a "LayerO (LO)” and the other one is referred to as a “Layerl (Ll) " .
  • LayerO LayerO
  • Ll Layerl
  • individual recording layers have the same structure in the write-once dual-layered BD-R according to the present invention.
  • the inner area of the recording layer LO includes the OPC area as a test area, and the inner area of the recording layer Ll includes the DCZ area as a test
  • the optical recording/reproducing device calculates an optimum write power using the OPC process in the OPC area and/or the DCZ area. In other words, if the disc is loaded in the optical recording/reproducing device, the optical recording/reproducing device performs the recording/reproducing operation as in the single-layered optical disc structure.
  • FIG. 3 is a conceptual diagram illustrating a method for performing the OPC process according to the present invention.
  • a recording-medium tracking direction of the optical recording/reproducing device in the recording medium is determined to be a Physical Sector Number (PSN) increasing direction along which the PSN is increased.
  • the OPC-process performing direction in the recording medium is determined to be a PSN decreasing direction along which the PSN is decreased in the direction from a high PSN to a low PSN.
  • a recording direction after the OPC process is determined to be a PSN increasing direction from a low PSN to a high PSN in the same manner as in the tracking direction.
  • a unit for recording data in a data area of the recording medium is a 1-cluster unit, and a unit for recording data by performing the OPC process in the OPC area may act as a 1-cluster unit.
  • a data record area acquired by the OPC process may be less than the 1 cluster, and may also be larger than the 1 cluster.
  • AUN Address Unit Number
  • the AUN is indicative of address information used during a data record time. It is obvious to those skilled in the art that an unused OPC area acting as a previous area formed prior to the data recording does not include the above-mentioned AUN information.
  • the AUN acts as a unit having a range less than that of the cluster, and a single cluster includes 16 AUNs.
  • a single OPC process performing length is selected by the optical recording/reproducing device, and is not limited by the number of physical clusters.
  • the BD-R has a limited OPC area and cannot re-use a once-used OPC area, such that there is a need for the BD-R to maximally use the limited OPC area. Therefore, it is very important to determine a start position of a new OPC process in the
  • FIG. 3 shows a specific case where three OPC processes are performed.
  • FIG. 3 shows a plurality of parts, each of which performs the OPC process, and a plurality of OPC markers for identifying individual parts.
  • a part for performing a first OPC process is denoted by "Cluster #P+1" , and includes a first part denoted by "OPC #M” and a second part denoted by “OPC Marker #M” .
  • the "OPC #M” part records data therein, and the "OPC Marker #M” part identifies the "OPC #M” part.
  • a part for performing a second OPC process includes "Cluster #P” , "Cluster #N” , and some parts of "Cluster #N-1” .
  • a part denoted by "OPC #M+1” records data therein, and the "OPC Marker #M+1" identifies the "OPC #M+1” part.
  • a part for performing a third OPC process is composed of some parts of the "Cluster #N-1" part.
  • the part for performing the third OPC process includes "OPC #M+2" and "OPC Marker #M+2” .
  • the "OPC #M+2" part records data therein, and the "OPC Marker #M+2" part identifies the "OPC #M+2" part.
  • "Cluster #N-2" and some parts of the "Cluster #N-1" part positioned prior to the "OPC Marker #M+2" part serve as unused cluster areas.
  • the distance between two successive OPC markers from among OPC markers capable of identifying data record areas associated with the OPC process is equal to or less than a predetermined distance corresponding to 16 clusters.
  • the OPC marker in order to satisfy the above-mentioned requirements in the OPC process requiring at least 16 clusters, the OPC marker must be inserted into the OPC process.
  • the above- mentioned OPC marker must have a predetermined length corresponding to at least 868 NWLs (Nominal Wobble Lengths) .
  • the "OPC #M" part shown in FIG. 3 occupies a single cluster (i.e., 1 cluster) in the OPC area.
  • the "OPC #M+1" part occupies a predetermined area larger than the 1 cluster in the OPC area.
  • the "OPC #M+2" part occupies a predetermined area less than the 1 cluster in the OPC area. It can be understood that the OPC process is performed in unit smaller than cluster unit, for example, AUN unit. Therefore, the "OPC #M+2" part recorded by the last OPC process occupies a predetermined area less than the 1 cluster in the OPC area, and the part "A" indicative of some parts of the cluster #N-1" part remains unused.
  • FIG. 4 is a conceptual diagram illustrating a relationship among a cluster, an ADIP word, an AUN, an ADIP unit, and a wobble according to the present invention.
  • the 1 cluster from among the OPC area is shown in FIG. 4.
  • the 1 cluster includes 13944 wobbles, and includes 249 ADIP units.
  • the 1 cluster corresponds to 498 sync frames, and also corresponds to 3 ADIP words.
  • three ADIP words are the ADIP word 0, the ADIP word 1, and the ADIP word 2 as shown in FIG. 4.
  • the 1 ADIP word includes 83 ADIP units, and the ADIP unit includes 56 wobbles.
  • the 1 cluster includes 16 AUNs. In this case, a single AUN corresponds to the length of 868 wobbles, and also corresponds to 15.5 ADIP units. In this case, the wobble is indicative of an NWL (Nominal Wobble Length) .
  • NWL Nominal Wobble Length
  • FIG. 5 shows a matching table among the AUN, the ADIP word, and the ADIP unit in accordance with a first preferred embodiment of the present invention.
  • the length of the 1 AUN is equal to the length of 15.5 ADIP unit, such that individual ADIP words at start positions of individual AUNs are matched to ADIP units contained in individual ADIP words, resulting in the creation of a table.
  • the AUNO shown in FIG. 5 corresponds to the "0 ADIP unit” of the "ADIP word 0".
  • the AUNl corresponds to the "15.5 ADIP unit” of the "ADIP word 0" .
  • the AUN2 corresponds to the "3
  • the ADIP unit of the "ADIP word 0" .
  • the AUN3 corresponds to the
  • the AUN4 corresponds to the "62 ADIP unit” of the "ADIP word 0" .
  • the AUNO corresponds to the "77.5 ADIP unit” of the "ADIP word 0".
  • AUNs from AUN6 correspond to an area of the "ADIP word 1" .
  • the AUN6 corresponds to 10 ADIP unit of the "ADIP word 1" .
  • the AUN7 corresponds to 25.5 ADIP unit of the "ADIP word 1".
  • the AUN8 corresponds to 41 ADIP unit of the "ADIP word 1" .
  • the AUN9 corresponds to 56.5 ADIP unit of the "ADIP word 1".
  • the AUNlO corresponds to 72 ADIP unit of the "ADIP word 1" .
  • AUNs from AUNIl correspond to an area of the "ADIP word 2" .
  • the AUNIl corresponds to 4.5 ADIP unit of the "ADIP word 2".
  • the AUN12 corresponds to 20 ADIP unit of the "ADIP word 2" .
  • the AUN13 corresponds to 35.5 ADIP unit of the "ADIP word 2".
  • the AUN14 corresponds to 51 ADIP unit of the "ADIP word 2" .
  • the AUN15 corresponds to 66.5 ADIP unit of the "ADIP word 2".
  • AUNs and the ADIP units shown in FIG. 5 is indicative of information stored in the optical recording/reproducing device.
  • FIG. 6 shows an example in which a single ADIP word is composed of 83 ADIP units according to the present invention.
  • the 9 head ADIP units of the ADIP word sequentially include “monotone unit”, “sync_0 unit”, “monotone unit” , “sync_l unit” , “monotone unit” , “sync_2 unit” , “monotone unit” , “sync_3 unit” , and “reference unit” .
  • a physical address (i.e., Physical ADIP Address "PAA") of a corresponding wobble and auxiliary (AUX) data are recorded in
  • the optical recording/reproducing device reads the single
  • FIG. 7 is a conceptual diagram illustrating a method for searching for an OPC start position using a wobble count process according to the present invention.
  • AUN6 ⁇ AUN15 contained in the 1 cluster is indicative of 10 AUNs (Address Unit Numbers)
  • an unused OPC area is indicative of 6 AUNs from AUNO to AUN5.
  • the AUN 6 in the last used OPC area can be detected by inserting the OPC marker in front of the AUN 6 as described in FIG.3.
  • the OPC performing size indicative of a predetermined size required for a current OPC process is predetermined by the optical recording/reproducing device, and can be established in various ways. It is assumed that the OPC performing size is equal to 4 AUNs from AUN2 to AUN5.
  • Wobble information is adapted to search for a physical position corresponding to the AUN2.
  • the OPC start position must be found on the basis of the ADIP information indicative of address information of the wobble shown in FIG. 6.
  • the wobble-count reference position may be equal to a start position of the cluster.
  • the above-mentioned cluster start position indicative of the wobble-count reference position is identical with a start position of the ADIP word.
  • the 9 head ADIP units of the ADIP word sequentially correspond to "monotone unit", ⁇ sync_0 unit", “monotone unit”, “sync__l unit”, “monotone unit”, “sync_2 unit”, “monotone unit”, “sync_3 unit”, and “reference unit”. Therefore, if the 9 head ADIP units of the ADIP word are sequentially detected or the first "monotone unit” is detected during a search time of the optical recording/reproducing device, the ADIP-word start position is established. In other words, the cluster start position is considered to be a wobble-count reference position.
  • the ADIP-word start position contained in the 1 cluster may be considered to be the wobble-count reference position.
  • the 1 cluster includes three ADIP words. It is assumed that the 1 cluster includes the ADIP word 0, the ADIP word 1, and the ADIP word 2. In this case, if the next OPC start position is in the "ADIP Word 1" area or the "ADIP Word 2" area, the 9 head ADIP units of the ADIP word indicative of a start position of the "ADIP Word 2" area sequentially correspond to "monotone unit” , “sync_0 unit” , “monotone unit” , “sync_l unit” , “monotone unit” , “sync_2 unit”, “monotone unit”, “sync_3 unit”, “monotone unit", and “reference unit".
  • a start position of "ADIP Word 1" ' area or a start position of the "ADIP Word 2" area is determined to be a wobble-count reference position, such that the number of wobbles can be counted. Therefore, if the wobble-count reference position is determined, and size information of a pre-used OPC area acting as a recorded area and size information of an OPC area required for a current OPC process are recognized, the optical recording/reproducing device counts the number of wobbles at the wobble-count reference position, and searches for an OPC start position desired by a drive.
  • FIG. 8a is a conceptual diagram illustrating a method for searching for an OPC start position using the matching table in accordance with a first preferred embodiment of the present invention.
  • a pre-used OPC area indicative of a recorded area of the 1 cluster is indicative of 12 AUNs from AUN 4 to AUN15, and an unused OPC area is indicative of 4 AUNs from AUNO to AUN3.
  • the OPC performing size indicative of a predetermined size required for a current OPC process is predetermined by the optical recording/reproducing device, and can be established in various ways. It is assumed that the OPC performing size is equal to 2 AUNs from AON2 to AUN3 according to the first preferred embodiment of the present invention.
  • a cluster start position is equal to a start position of the ADIP word 0 during the searching time of the recording medium/ such that the cluster start position and the start position of the ADIP word 0 are determined to be a wobble-count reference position, and the operation for counting the number of wobbles begins at the wobble-count reference position.
  • the detected reference wobble is considered to be a reference position.
  • the 9 head ADIP units of the ADIP word indicative of a start position of the ADIP word 0 sequentially correspond to "monotone unit", "sync_0 unit”, “monotone unit”, “sync_l unit”, “monotone unit”, “sync_2 unit” , “monotone unit” , “sync_3 unit” , and "reference unit” .
  • the start position of the ADIP word 0 is set to a wobble-count reference position, and the number of wobbles is counted. Therefore, if the wobble-count reference position is determined, and size information of a pre-used OPC area acting as a recorded area and size information of an OPC area required for a current OPC process are recognized, the optical recording/reproducing device counts the number of wobbles at the wobble-count reference position, and searches for an OPC start position desired by a drive.
  • the Correspond ADIP Unit Number of the AUN2 is indicative of the 31 ADIP unit of the ADIP word 0.
  • the 1 ADIP unit includes 56 wobbles. If the 1 ADIP unit composed of 56 wobbles is counted at the wobble- count reference position and 31*56 wobbles are then established, an OPC start position desired by a drive acting as the optical recording/reproducing device is determined. Therefore, if the OPC start position is determined, the OPC process capable of calculating an optimum write power at the determined OPC start position is performed. Therefore, upon receiving a recording command of a disc acting as a corresponding recording medium from the optical recording/reproducing device, the recording command is executed at the calculated optimum write power, such that data is recorded in a data area.
  • the ADIP word start position contained in the 1 cluster may be determined to be the wobble-count reference position, and a detailed description thereof will
  • FIG. 8b is a conceptual diagram illustrating a method for searching for an OPC start position using the matching table in accordance with a second preferred embodiment of the
  • a pre-used OPC area indicative of a recorded area of the 1 cluster is indicative of 8 AUNs from AUN8 to AUN15, and an unused OPC area is indicative of 8 AUNs from AUNO to AUN7.
  • the OPC performing size indicative of a predetermined size required for a current OPC process is predetermined by the optical recording/reproducing device, and can be established in various ways. It is assumed that the OPC performing size is equal to 2 AUNs from AUN6 to AUN7 according to the second preferred embodiment of the present invention.
  • the optical recording/reproducing device reads information of the recording medium using the pickup unit, and at the same time searches for the recording medium.
  • the start position of the ADIP word 1 is determined to be a wobble- count reference position, such that the operation for counting the number of wobbles begins at the wobble-count reference position.
  • the 9 head ADIP units of the ADIP word indicative of a start position of the ADIP word 1 sequentially correspond to "monotone unit” , "sync__0 unit” , “monotone unit” , “sync_l unit” , “monotone unit” , “sync_2 unit” , “monotone unit” , “sync_3 unit” , and “reference unit” . Otherwise, if the first "monotone unit” is detected, the start position of the ADIP word 1 is set to a wobble-count reference position, and the number of wobbles is counted. Therefore, if the wobble-count reference position is determined, and size information of a pre-used OPC area acting as a recorded area and size information of an OPC area required for a current OPC process are recognized, the
  • optical recording/reproducing device counts the number of wobbles at the wobble-count reference position, and searches for an OPC start position desired by a drive.
  • FIG. 8c is a conceptual diagram illustrating a method for searching for an OPC start position using the matching table in accordance with a third preferred embodiment of the present invention.
  • a pre-used OPC area indicative of a recorded area of the 1 cluster is indicative of 3 AUNs from AUN13 to AUN15, and an unused OPC area is indicative of 13 AUNs from AUNO to AUN12.
  • the OPC performing size indicative of a predetermined size required for a current OPC process is predetermined by the optical recording/reproducing device, and can be established in various ways. It is assumed that the OPC performing size is equal to 2 AUNs from AUNIl to AUN12 according to the third preferred embodiment of the present invention.
  • the optical recording/reproducing device reads information of the recording medium using the pickup unit, and at the same time searches for the recording medium.
  • the start position of the ADIP word 2 is determined to be a wobble- count reference position, such that the operation for counting the number of wobbles begins at the wobble-count reference position.
  • the 9 head ADIP units of the ADIP word indicative of a start position of the ADIP word 2 sequentially correspond to "monotone unit” , "sync_0 unit” , “monotone unit”, “sync__l ⁇ nit” , “monotone unit”, “sync_2 unit”, “monotone unit”, “sync_3 unit”, and “reference unit”. Otherwise, if the first "monotone unit” is detected, the start position of the ADIP word 2 is set to a wobble-count reference position, and the number of wobbles is counted.
  • the optical recording/reproducing device counts the number of wobbles at the wobble-count reference position, and searches for an OPC start position desired by a drive.
  • the Correspond ADIP Unit Number of the AUNIl is indicative of the 4.5 ADIP
  • the 1 ADIP unit includes 56 wobbles in the same manner as in the third preferred embodiment of the present invention. If the 1 ADIP unit composed of 56 wobbles is counted at the wobble-count reference position and 4.5*56 wobbles are then established, an OPC start position desired by a drive acting as the optical recording/reproducing device is determined. Therefore, the OPC process capable of calculating an optimum write power at the determined OPC start position is performed.
  • the optical recording/reproducing device counts the number of wobbles at the wobble-count reference position, and searches for an OPC start position desired by a drive.
  • FIG. 9 is a block diagram illustrating an optical recording/reproducing device according to the present
  • the optical recording/reproducing device includes a recording/reproducing unit 20 for recording/reproducing data in/from an optical disc, and a controller 12 for controlling the recording/reproducing unit 20.
  • the recording/reproducing unit 20 includes a pickup unit 11, a signal processor 13, a servo unit 14, a memory 15, and a microprocessor 16.
  • the pickup unit 11 directly records data in the optical disc, or reads data recorded in the optical disc.
  • the signal processor 13 receives a signal read from the pickup unit 11, restores the received signal to a desired signal value, or modulates a signal to be recorded into another signal recorded in the optical disc, such that it transmits the recovered or modulated result .
  • the servo unit 14 controls operations of the pickup unit 11, such that it correctly reads a desired signal from the optical disc, and correctly records the signal in the optical disc.
  • the memory 15 temporarily stores not only management information but also data.
  • the microprocessor 16 controls overall operations of the above-mentioned components.
  • the above-mentioned recording/reproducing unit 20 performs a predetermined test in a test area of a recording medium, such that it calculates an optimum write power, and records the calculated optimum write power.
  • the optical recording/reproducing device composed of only the recording/reproducing unit 20 is referred to as a drive, and is generally used as a peripheral device of a computer.
  • the controller 12 controls operations of overall constituent components.
  • the controller 12 refers to a user command by interfacing with a user, and transmits a recording/reproducing command capable of recording/reproducing data in/from the optical disc to the recording/reproducing unit 20.
  • the decoder 17 decodes a signal read from the optical disc upon receiving a control signal from the controller 12, restores the decoded signal to desired information, and transmits the restored signal to the user.
  • the encoder 18 receives a control signal from the controller 12 to record a desired signal in the optical disc, converts the received signal into a specific-format signal (e.g., an MPEG2 transport stream) , and transmits the specific-format signal to the signal processor 13.
  • the memory 15 stores information of the matching table shown
  • FIG. 10 is a flow chart illustrating a method for recording data in a recording medium using the optical recording/reproducing device according to the present invention. Referring to FIG. 10, if an optical disc including the OPC and DCZ areas is loaded in the optical recording/reproducing device, the microprocessor 16 contained in the recording/reproducing unit 20 controls the pickup unit 11 using the servo unit 14, and performs scanning of the loaded disc to read information associated with the pre-used OPC area, such that it recognizes a pre-used OPC area at step SlO.
  • the TDMA area for storing management information of the recording medium also stores management information associated with the OPC area, such that it stores information associated with the pre-used OPC area, esp. information indicating start position of the pre-used OPC area.
  • the size of the OPC area required for the current OPC process is predetermined in the optical recording/reproducing device, such that the microprocessor 16 recognizes the size of the OPC area at step S20. Thereafter, the wobble-count reference position is determined at step S30. As previously stated above, the wobble-count reference position is indicative of a cluster start position or start positions of the ADIP word 0, the ADIP word I 7 and the ADIP word 2 acting as the ADIP words.
  • the 9 head ADIP units of the ADIP word are associated with the start position of the ADIP word, and sequentially include “monotone unit” , “sync_0 unit” , “monotone unit” , “sync_l unit” , “monotone unit” , “sync_2 unit” , “monotone unit” , “sync_3 unit” , and “reference unit” . Otherwise, if the first "monotone unit” is detected, the wobble-count reference position can be recognized. It is preferable that the start position of the ADIP word is set to the wobble-count reference position. If the wobble-count reference position is detected at step S30, the microprocessor 16 of the optical recording/reproducing device starts counting the number of
  • the microprocessor 16 When searching for the OPC start position using the matching table, the microprocessor 16 also searches for wobbles identical with the ADIP unit shown in the matching table. In more detail, the microprocessor 16 counts the number of wobbles identical with the ADIP unit. In this case, the wobble-count start position act as the next OPC start
  • the recording/reproducing unit 20 performs the OPC process to calculate an optimum write power at the searched current OPC start position.
  • the recording/reproducing unit 20 Upon receiving a recording command of a corresponding disc from the controller 12, the recording/reproducing unit 20 performs a corresponding recording command at the calculated optimum write power, and records data in a data area at step S50.
  • the present invention provides a method for searching for the OPC start position at which the current OPC process is to be performed in order to effectively use an unused OPC area in the OPC area, such that the OPC process can be performed at the searched OPC start position.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

L'invention concerne un procédé et un appareil pour enregistrer des données dans un support d'enregistrement. Ce procédé pour enregistrer des données dans un support d'enregistrement, comprenant une zone de test ondulée, consiste a) à déterminer une zone de test pré-utilisée, b) à rechercher un emplacement de départ OPC actuel de la zone de test en comptant le nombre d'ondulations à un emplacement de référence de comptage d'ondulations, c) à exécuter un processus de contrôle de la puissance optimale (OPC) pour calculer une puissance d'écriture optimale à l'emplacement de départ OPC et d) à enregistrer des données dans une zone de données en utilisant la puissance d'écriture optimale calculée. Par conséquent, ce support d'enregistrement peut être appliqué à un procédé de fabrication d'un disque Blu-ray. De plus, un processus de test de disque et des opérations de lecture/enregistrement de données peuvent être exécutées de manière efficace.
PCT/KR2005/003002 2004-09-13 2005-09-12 Procede et appareil pour enregistrer des donnees dans un support d'enregistrement WO2006031040A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP05786909A EP1789959A1 (fr) 2004-09-13 2005-09-12 Procede et appareil pour enregistrer des donnees dans un support d'enregistrement
CN2005800296669A CN101019173B (zh) 2004-09-13 2005-09-12 记录介质中记录数据的方法和装置
JP2007531078A JP2008512817A (ja) 2004-09-13 2005-09-12 記録媒体にデータを記録する方法及び装置

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US60889704P 2004-09-13 2004-09-13
US60/608,897 2004-09-13
KR1020050008015A KR101071835B1 (ko) 2004-09-13 2005-01-28 기록매체의 기록방법과 기록장치
KR10-2005-0008015 2005-01-28
KR10-2005-0020224 2005-03-10
KR1020050020224A KR20060043844A (ko) 2004-09-13 2005-03-10 기록매체의 기록방법과 기록장치

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WO2006031040A1 true WO2006031040A1 (fr) 2006-03-23

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EP (1) EP1789959A1 (fr)
JP (1) JP2008512817A (fr)
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Citations (2)

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JP2001273637A (ja) * 2000-03-28 2001-10-05 Sony Corp 光ディスク及び情報記録方法
JP2003132538A (ja) * 2001-10-24 2003-05-09 Hitachi-Lg Data Storage Inc 光情報記録装置

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US7023773B2 (en) * 2000-11-17 2006-04-04 Lg Electronics Inc. Apparatus and method of generating optimum recording power for optical recording/reproducing apparatus
JP2003059048A (ja) * 2001-08-21 2003-02-28 Victor Co Of Japan Ltd レーザパワーの制御方法、レーザパワーの測定方法、レーザパワーの制御装置
JP2003067929A (ja) * 2001-08-29 2003-03-07 Yamaha Corp 光ディスク、光ディスク記録装置、光ディスク記録装置の制御方法およびプログラム
TWI348692B (en) * 2002-06-05 2011-09-11 Lg Electronics Inc High-density optical disc, method and apparatus for recording and reproducing encrypted data thereon
JP2004086992A (ja) * 2002-08-27 2004-03-18 Sharp Corp 記録装置
JP4266138B2 (ja) * 2003-08-11 2009-05-20 パイオニア株式会社 情報記録装置及び最適レーザパワー検出方法

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Publication number Priority date Publication date Assignee Title
JP2001273637A (ja) * 2000-03-28 2001-10-05 Sony Corp 光ディスク及び情報記録方法
JP2003132538A (ja) * 2001-10-24 2003-05-09 Hitachi-Lg Data Storage Inc 光情報記録装置

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JP2008512817A (ja) 2008-04-24

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