WO2005031717A1 - 光ディスク、アクセス装置およびアクセス方法 - Google Patents
光ディスク、アクセス装置およびアクセス方法 Download PDFInfo
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- WO2005031717A1 WO2005031717A1 PCT/JP2004/014708 JP2004014708W WO2005031717A1 WO 2005031717 A1 WO2005031717 A1 WO 2005031717A1 JP 2004014708 W JP2004014708 W JP 2004014708W WO 2005031717 A1 WO2005031717 A1 WO 2005031717A1
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- Prior art keywords
- recording
- reproducing
- optical disc
- area
- parameters
- Prior art date
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- 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
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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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
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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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
- G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA
Definitions
- the present invention relates to an optical disc including a plurality of areas allocated in advance corresponding to a plurality of conditions, an access apparatus for accessing the optical disc, and an accommodating medium for the optical disc. Access method to access. Background technology ''
- optical discs have been very actively applied as media for audio-visual (AV) devices and personal computers (PCs).
- AV audio-visual
- PCs personal computers
- CD Compact Disc
- a read-only CD-R0M for providing PC programs and applications
- a CD-R capable of appending data and A CD-RW that can be rewritten overnight has been developed.
- Formats for CD-ROM, formats for CD-R and formats for CD-RW are widespread in the AV and PC fields.
- DVD digital versatile disc
- DVD-R format DVD-R format
- DVD-RAM format DVD-RW format
- .DVD-RW format write-once and rewritable formats
- the spread of DVD is accelerating.
- transfer rates from 1x to 48x In a recordable optical disk, a transfer rate of about 1 ⁇ to 16 ⁇ is realized.
- increasing the transfer rate also causes disadvantages (such as an increase in power consumption and an increase in the noise of the recording / reproducing device due to an increase in the rotation speed of the optical disk).
- An appropriate transfer rate is selected in consideration of advantages and disadvantages caused by increasing the transfer rate. For example, in a portable recording / reproducing apparatus with a large power constraint, data is recorded / reproduced at a low transfer rate when operating on a battery, and data is recorded / reproduced at a high transfer rate when an AC adapter is attached. Even if there is no power restriction, the transfer rate will continue to improve with the times, so the maximum transfer rate for already released recording and playback devices will be the transfer rate already standardized at the time of release. . Therefore, the optical disc used in the recording / reproducing device is required to support all transfer rates from the past recording / reproducing device to the current recording / reproducing device.
- a plurality of recording / reproducing parameters corresponding to a plurality of transfer rates are recorded in advance on an optical disc.
- a plurality of recording / reproducing parameters are recorded on the master in the lead-in area of the optical disc during the process of making the master when creating the optical disc, and are recorded on the optical disc by transferring from the master during the process of making the substrate of the optical disc.
- a plurality of recording / reproducing parameters are recorded in pits having convex and concave portions.
- a plurality of recording / reproducing parameters may be recorded by coupling a groove formed on an optical disk.
- FIG. 8 shows a configuration of a conventional optical disk 700 (see, for example, page 5 of FIG. 1 and FIG. 1 of Japanese Patent Application Laid-Open No. 1-210846).
- the optical disc 700 includes a lead-in area 702, a data area 703, and a parameter recording area 704.
- the data area 703 is an area where user data is recorded. Tracks including continuous spiral grooves are formed in the data area 703.
- the lead-in area 702 is an area in which information necessary for the system, such as control information for controlling the optical disk 700 and replacement information, is recorded. In the lead-in area 720, recording pits having irregularities transferred in a substrate forming process when forming the optical disk 700 are formed.
- the lead-in area 702 includes a parameter recording area 704.
- the parameter overnight recording area 704 is an area where the recording / reproducing parameters of the optical disc # 100 are recorded.
- recording / playback parameters corresponding to various transfer rates are recorded in advance.
- FIG. 9 shows a data structure recorded in the parameter recording area 704.
- the parameter recording area 704 includes a plurality of readout units 801.
- a plurality of read units 8 0 1 are usually called a sector.
- a parity code is added to the data recorded in the sector using a product code using a Reed-Solomon code, and the sector is a unit in which error correction is performed during reproduction.
- recording and reproducing conditions at different transfer rates are recorded.
- the parameter overnight recording area 704 includes a sector 802 to a sector 809.
- Sectors 802 to 809 are a plurality of areas allocated in advance corresponding to a plurality of conditions.
- Sector 802 is an area allocated in advance corresponding to the 1 ⁇ speed recording / reproducing condition.
- the sector 803 is an area allocated in advance corresponding to the double speed recording / reproducing condition.
- Sector 804 is an area allocated in advance corresponding to the 4 ⁇ speed recording / reproducing condition.
- the sector 805 is an area allocated in advance corresponding to the 8 ⁇ speed recording / reproducing condition.
- Sectors 802 to 805 record recording / reproduction conditions from 1 ⁇ speed to 8 ⁇ speed.
- a 1 ⁇ speed recording / reproducing parameter is recorded.
- a double speed recording / reproduction parameter is recorded.
- a 4 ⁇ speed recording / reproduction parameter is recorded.
- an 8 ⁇ speed recording / reproduction parameter is recorded.
- Sectors 806 to 809 are reserved as spare areas for adding recording / reproducing parameters when the transfer rate or recording / reproducing conditions are changed in the future. In the future, optical discs with additional recording / reproducing parameters in sectors 806 to 809 will be produced and shipped in accordance with technological progress and standardization.
- Sectors 802 to 805 contain various information depending on the recording / reproducing speed.
- Each of the sectors 802 to 805 includes, as recording / reproducing parameters corresponding to each transfer rate, information on a linear velocity at the time of recording / reproducing, information on a reproducing power at the time of reproducing, and information on a recording power.
- Information information on a pulse waveform of a laser at the time of recording, information necessary for the recording / reproducing apparatus to determine a recording pattern by learning using recording characteristics, and the like are recorded. These types of information are generally used as parameters necessary for performing recording and playback, but many optical discs include information necessary for performing various types of recording and playback. Recording ⁇ Recorded to optimize playback conditions.
- the apparatus using the optical disk 700 first reads out the information recorded in the lead-in area 7002, and judges whether the optical disk 700 can be handled based on this information. If the device can be handled, this device refers to the information recorded in the lead-in area 702 and sets an appropriate device state.
- the recording / reproducing parameters for recording / reproducing on / from the optical disk 700 under the recording / reproducing conditions corresponding to the speed that this device can handle are read from the parameter / recording area 704, and the recording / reproducing parameters are referred to. Then, after performing operations such as learning of recording and reproduction, recording and reproduction of data is performed on the optical disk 700.
- recording and reproduction can be performed in an appropriate operation state according to the optical disk even when recording and reproduction conditions such as speed and transfer rate are different, so that recording and reproduction can be performed stably even at a wide range of recording and reproduction speeds.
- FIG. 10 shows the structure of a parameter overnight recording area of a plurality of optical discs corresponding to various recording / reproducing speeds.
- the optical disk 901 is an optical disk compatible with recording and reproduction at 1 to 2 times speed.
- the recording / reproducing parameters at 1 ⁇ speed are recorded.
- recording / reproducing parameters at 2 ⁇ speed are recorded.
- no recording / reproducing parameters are recorded.
- the optical disk 902 is an optical disk compatible with recording and reproduction at 1 to 8 times speed.
- the recording / reproducing parameters at 1 ⁇ speed are recorded.
- recording / reproducing parameters at 2 ⁇ speed are recorded.
- a 4 ⁇ speed recording / reproduction parameter is recorded.
- an 8x speed recording / playback parameter is recorded.
- No recording / reproduction parameters are recorded in sectors 806 to 809. '
- the optical disk 903 is an optical disk compatible with recording and reproduction at 2 to 16 times speed.
- a double speed recording / reproduction parameter is recorded.
- a 4 ⁇ speed recording / reproduction parameter is recorded.
- an 8 ⁇ speed recording / reproduction parameter is recorded.
- recording / playback parameters at 16 ⁇ speed are recorded.
- no recording / reproducing parameters are recorded.
- a recording / reproducing apparatus corresponding to 1 to 2 times speed records / reproduces data on / from the optical discs 91 to 903.
- the recording / reproducing parameters of 2 times speed recorded in sector 803 are read.
- the recording / reproducing conditions are recorded in each of the sectors 803 of the optical disks 901 to 903, and the recording / reproducing apparatus can obtain the recording / reproducing conditions only by reading the sector 803 once. Can be.
- the optical discs 91 to 903 are inserted for recording / reproducing at 16 ⁇ speed by a recording / reproducing apparatus corresponding to 1 to 16 ⁇ speed.
- the recording / reproducing device reads the information recorded in sector 806.
- the sector 806 is read.
- the optical disc 903 can record and reproduce up to 16 times speed. Recording conditions are recorded in sector 806, and recording and reproduction can be performed at 16 times speed by referring to the recording and reproduction parameters obtained by reading sector 806.
- the recording / reproducing conditions are not recorded in the sector 806 of the optical disk 901 and the sector 806 of the optical disk 902, and the data obtained by reading the sector 806 from the data is obtained.
- the recording / reproducing apparatus with the optical disk inserted therein can perform recording / reproducing at 1 to 16 times speed, it can record / reproduce data on / from the optical disk 901 and the optical disk 902.
- the recording / reproducing apparatus in order for the recording / reproducing apparatus to perform recording / reproducing at a speed at which the optical disc can record / reproduce, it is necessary to read out the recording / reproducing conditions which can be recorded / reproduced on the inserted optical disc again.
- the sector 803 or the sector 802 of the optical disk 901 is read again, and any one of the sector 802 to the sector 805 of the optical disk 902 is read again. Will be.
- the present invention has been made in view of the above problems, and has an optical disk including a plurality of areas allocated in advance corresponding to a plurality of conditions, an access device for accessing the optical disk, and an access method for accessing the optical disk.
- the purpose is to provide. Disclosure of the invention
- An optical disc is an optical disc including a plurality of areas allocated in advance corresponding to a plurality of conditions, wherein the plurality of areas include at least one of the plurality of conditions which can access the optical disk. At least one first area pre-assigned corresponding to the first condition, and at least one first area pre-assigned corresponding to at least one second condition of the plurality of conditions that is inaccessible to the optical disc; A second area, wherein the at least one first area and the at least one second area include a plurality of first parameters that provide a method of accessing the optical disc under the at least one first condition. Is recorded, and thereby the above-mentioned purpose is achieved.
- one of the plurality of first parameters may be recorded with one first parameter corresponding to each of the at least one first region.
- the at least one second area includes a first parameter closest to the plurality of second parameters that provides a method of accessing the optical disc under the at least one second condition among the plurality of first parameters.
- a parameter overnight may be recorded.
- the optical disc includes at least one recording layer, each of the at least one recording layer includes the at least one first area and the at least one second area, and the at least one first area and Said at least one second
- the area may record a plurality of third parameters that provide a method of accessing each of the at least one recording layer with the at least one first condition.
- the plurality of conditions may include a condition relating to a speed of accessing the optical disc.
- An access device is an access device for accessing an optical disc including a plurality of areas allocated in advance corresponding to a plurality of conditions, wherein the plurality of areas includes an access to the optical disc among the plurality of conditions. At least one first area pre-assigned corresponding to at least one possible first condition, and pre-assigned corresponding to at least one second condition inaccessible to the optical disc among the plurality of conditions. At least one second area, wherein the at least one first area and the at least one second area include a plurality of second areas that provide a method of accessing the optical disc under the at least one first condition.
- One parameter is recorded, and the access device includes the at least one first area and the at least one second area. Reading means for reading at least one of the plurality of first parameters from at least one area of the optical disk, and reading the optical disk by an access method provided by the read at least one first parameter. And an access means for accessing the device, whereby the object is achieved.
- the reading means may read the at least one first parameter from at least one of the at least one second area.
- An access method is an access method for accessing an optical disc including a plurality of areas allocated in advance corresponding to a plurality of conditions, wherein the plurality of areas includes an access to the optical disc among the plurality of conditions. At least one first area assigned in advance corresponding to at least one possible first condition; and at least one second condition inaccessible to the optical disc among the plurality of conditions. At least one second area allocated in advance, wherein the at least one first area and the at least one second area provide a method for accessing the optical disc under the at least one first condition.
- the first access point is recorded, and the access method comprises the steps of: reading the plurality of first paranouts from at least one of the at least one first area and the at least one second area. Reading at least one of them, and accessing said optical disk with an access method provided by said at least one first parameter read, whereby said object is achieved. Achieved. Brief Description of Drawings
- FIG. 1 is a diagram showing an optical disc 101 according to an embodiment of the present invention.
- FIG. 2 is a diagram for explaining a manufacturing process of the master of the optical disc 101.
- FIG. 3 is a diagram for explaining a manufacturing process of the optical disc 101.
- FIG. 4 is a diagram showing a data structure of a parameter overnight recording area 104 of the optical disc 101 according to the embodiment of the present invention.
- FIG. 5 is a diagram showing details of the recording / reproducing parameters.
- FIG. 6 is a diagram showing a configuration of the recording / reproducing device 600 according to the embodiment of the present invention.
- FIG. 7 is a flowchart showing a recording / reproducing processing procedure according to the embodiment of the present invention.
- FIG. 8 is a diagram showing a configuration of a conventional optical disk 700. As shown in FIG.
- FIG. 9 is a diagram showing a data structure recorded in the parameter recording area 704.
- FIG. 10 is a diagram showing a structure of a parameter overnight recording area of a plurality of optical disks corresponding to various recording / reproducing speeds.
- an optical disk including a plurality of areas allocated in advance corresponding to a plurality of conditions will be described first (see “1. Optical Disk”).
- a method for manufacturing an optical disk (a process for manufacturing a master disk and a process for manufacturing a disk) will be described (see “1. Optical Disk”).
- recording / reproducing parameters recorded in a plurality of areas of the optical disk will be described (see “1. Optical Disk”).
- a recording / reproducing apparatus and a recording / reproducing method for performing recording / reproducing by setting recording / reproducing parameters based on recording / reproducing conditions will be described (see “2. Recording / reproducing apparatus” and “3 '. Recording / reproducing method”). . '
- FIG. 1 shows an optical disc 101 according to an embodiment of the present invention.
- the optical disc 101 includes a phase-change recording film.
- the optical disc 101 has, for example, a diameter of 50 mm, an inner diameter of 11 mm, and a thickness of 8 mm.
- Information is recorded / reproduced by an optical head (irradiation wavelength: 405 nm, numerical aperture (NA): 0.85) through a 0.1 mm thick transparent substrate.
- the optical disc 101 includes two recording layers.
- the optical disc 101 includes a lead-in area 102, a data area 103, and a parameter recording area 104.
- the lead-in area 102 is an area in which information necessary for the system, such as control information for controlling the optical disk 101 and replacement information, is recorded. In the lead-in area 102, information is recorded in advance by wobbling the groove transferred in the substrate manufacturing process of the optical disc 101.
- the lead-in area 102 includes a parameter overnight recording area 104.
- the parameter recording area 104 is an area in which recording and reproduction parameters of the optical disk 101 are recorded. In the parameter recording area 104, recording and reproduction parameters corresponding to various transfer rates are recorded in advance.
- control information for controlling the recording power of the optical disc 101, recording pulse shaping, and the like is recorded in advance in the form of grooves.
- the reason why the track pitch is wider in the lead-in area 102 than in the data area 103 is to stably read out the control information recorded in the groove.
- the data area 103 of the optical disk 101 has a radius of 23.8 mm to a radius of 1
- the lead-in area 102 has a width of 12.25 mm to 0.5 mm on the inner circumference, and a range of 12.25 mm to 11.75 mm in radius.
- tracks are formed in a continuous spiral shape.
- the track pitch (distance between grooves) of the lead-in area 102 is 0.35 m
- the track pitch of the data storage area 103 is 0.32 zm.
- the track pitch changes continuously within a range of about 30 m.
- An address for accessing the track is recorded by a groove wobble.
- the data area 103 is an area where rewritable recording data is recorded.
- the rewritable recording data is recorded in the data area 103 as amorphous recording pits in the groove.
- the recording pits are formed in the overnight area 103 by the same method as that used in a rewritable DVD or the like. For example, recording pits are formed in the data region 103 by rapidly modulating the intensity of the recording laser beam with multi-pulses to rapidly cool the recording film.
- optical disc 101 according to the embodiment of the present invention has been described above with reference to FIG.
- the above-described optical disk 101 is merely an example of the optical disk (optical recording medium) of the present invention, and does not limit the present invention.
- FIG. 2 is a diagram for explaining a process for producing a master of the optical disc 101.
- a desired groove pattern is exposed by a cutting machine 202 using a far infrared laser having a wavelength of 248 nm.
- the cutting machine 202 wobble the light beam based on the signal from the source and records the address and control information in a part of the lead-in area 102.
- the feed pitch of the cutting machine is changed to change the track pitch.
- the exposure is completed when the outermost periphery of the data area 103 is reached.
- FIG. 3 is a diagram for explaining a manufacturing process of the optical disc 101.
- the stamper _ 208 produced by the method described with reference to FIG. 2 is attached to an injection molding machine, injection molding is performed using polycarbonate, and the thickness of the groove shape of the stamper 208 is transferred.
- a molded substrate 301 having a thickness of 0.7 mm is manufactured.
- an 80 nm-thick Ag reflective layer 302 and a 20 nm-thick ZnS dielectric layer 303, 1 were formed by sputtering.
- a (Ge, Sn) 3 recording layer 304 having a thickness of 0 nm and a dielectric layer 305 of ZnS having a thickness of 57 nm are laminated. This becomes the first recording layer 310.
- an ultraviolet curable resin 303 is dropped on this, and the groove of the stamper 208 is transferred.
- the ultraviolet curable resin 303 is cured with ultraviolet rays 307.
- the surface of the cured UV-curable resin, to which the grooves of the 310 have been transferred, has a 20 nm thick Z nS dielectric layer 303, 10 nm thick (Ge, Sn) SbTe recording layer 304, 57 nm thick ZnS dielectric layer 30 5 is laminated. This becomes the second recording layer 311.
- a UV-curable resin 308 was dropped on a polycarbonate sheet 309 having a thickness of about 90 m on the spin layer, and the dielectric layer 305 was superimposed thereon. Is rotated to shake off the excess UV curable resin. When the thickness of the UV curable resin 308 reaches approximately 10 m, the rotation of the spinco is stopped, and UV light 307 is irradiated from the UV light source. The ultraviolet curing resin 308 is cured.
- the entire surface of the recording layer 304 of the optical disk 101 is amorphous when formed by the sputtering method, and it is necessary to crystallize the recording layer 304, which is generally called an initialization step. Become.
- This crystallization treatment is performed by scanning the entire surface with uniform light using an initialization device equipped with a high-output laser beam having a wavelength of about 65 O nm. By this processing, the reflectance of the recording film 304 becomes about 20%.
- FIG. 4 shows a data structure of a parameter overnight recording area 104 of the optical disc 101 according to the embodiment of the present invention.
- the sectors 404 to 411 have multiple conditions (1 ⁇ , 2 ⁇ , 4 ⁇ , 8 ⁇ , 16 ⁇ , 32 ⁇ speed). , 48 ⁇ speed and 60 ⁇ speed recording / reproduction conditions). Each of the sectors 404 to 411 can be read and error corrected at once.
- the optical disc 101 is, for example, an optical disc 401 that supports recording and reproduction at 1 to 2 times speed.
- Optical disk 401 parameter recording area 104 contains sectors 406-sectors 411 in a condition that makes it impossible to access optical disk 401 (4 ⁇ , 8 ⁇ , 16 ⁇ , 3 2) Double-speed, 48-times speed, and 60-times speed recording / reproducing conditions).
- Sectors 404 to sector 411 of the optical disk 401 are used for recording / reproducing data on / from the optical disk 401 under conditions that allow access to the optical disk 401 (1x speed and 2x speed recording / reproduction conditions). One night of playback parameters is recorded.
- One recording / playback parameter corresponding to each of the sectors 404 and 405 of the optical disk 401 is recorded in each of the sectors 404 and 405 of the optical disk 401.
- Optical disk under the conditions that are closest to the conditions that make it impossible to access the optical disk 401 (parameters for recording 4x, 8x, 16x, 32x, 48x and 60x)
- a recording / reproduction parameter for recording / reproduction is recorded in 401.
- a 1 ⁇ speed recording / reproducing parameter is recorded in the sector 404 of the optical disk 401.
- recording / playback parameters at 2 ⁇ speed—evening are recorded.
- the optical disc 101 is, for example, an optical disc 402 that supports recording and reproduction at 1 to 8 times speed. ,
- the condition that the sector 404 to sector 407 can access the optical disk 402 (1x speed, 2x speed, 4x speed, and 8x speed) Recording and playback conditions).
- the condition that the sector 408 to the sector 411 cannot access the optical disc 402 (16x speed, 32x speed, 48x Double-speed and 60-times speed recording / reproducing conditions) are assigned in advance.
- the optical disk 402 has a condition that allows access to the optical disk 402 (recording and reproducing conditions of 1 ⁇ , 2 ⁇ , 4 ⁇ , and 8 ⁇ speed) in the sectors 4404 to 4111 of the optical disk 402.
- the recording / reproducing parameters for recording / reproducing are recorded.
- Each of the sectors 404 to 407 of the optical disk 402 is provided with an optical disk 4 under conditions that allow access to the optical disk 402 (recording and reproducing conditions of 1 ⁇ , 2 ⁇ , 4 ⁇ and 8 ⁇ speed).
- the recording / reproducing parameters for recording / reproducing at 02 one recording / reproducing parameter corresponding to each of the sectors 404 to 407 of the optical disk 402 is recorded.
- Sectors 408 to 411 of the optical disk 402 contain the optical disk 402 under conditions that allow access to the optical disk 402 (recording and reproducing conditions of 1 ⁇ , 2 ⁇ , 4 ⁇ , and 8 ⁇ speed).
- the conditions closest to the conditions that make it impossible to access the optical disc 402 (recording / reproduction conditions at 16x speed, 32x speed, 48x speed, and 60x speed)
- the recording / reproducing parameters for recording / reproducing on the optical disc 402 are recorded under the condition of 8 ⁇ speed recording / reproducing.
- a 1 ⁇ speed recording / reproduction parameter is recorded in the sector 404 of the optical disk 402 in the sector 404 of the optical disk 402.
- recording / playback parameters of 2 ⁇ speed are recorded in the sector 405 of the optical disk 402, recording / playback parameters at 4 ⁇ speed are recorded in the sector 406 of the optical disk 402, recording / playback parameters at 4 ⁇ speed are recorded in the sector 407 of the optical disk 402, recording / reproducing parameters at 8 ⁇ speed are recorded.
- sector 408 to sector 411 recording / reproducing parameters of 8 ⁇ speed are recorded.
- the optical disk 101 is, for example, an optical disk 403 capable of recording and reproducing at 2- to 16-times speed.
- the sectors 405 to 408 are provided with conditions that allow access to the optical disk 403 (2x speed, 4x speed, 8x speed and 16x). (Double-speed recording / reproducing condition).
- the sector 404 and the sector 409 Evening 411 is assigned in advance in accordance with the conditions that make it impossible to access the optical disk 403 (recording / reproducing conditions of 1 ⁇ , 32 ⁇ , 48 ⁇ , and 60 ⁇ ).
- the optical disk 401 has a condition that allows access to the optical disk 403 (recording / reproducing conditions of 2 ⁇ , 4 ⁇ , 8 ⁇ , and 16 ⁇ speed).
- the recording / reproduction parameters for recording / reproduction are recorded.
- Each of the sectors 405 to 408 of the optical disk 401 has an optical disk 4 under conditions that allow access to the optical disk 403 (recording and reproducing conditions of 2 ⁇ , 4 ⁇ , 8 ⁇ and 16 ⁇ speed).
- the recording / reproducing parameters for recording / reproducing at 03 one recording / reproducing parameter corresponding to each of the sectors 405 to 408 of the optical disc 400 is recorded.
- Sector 404 and sector 409 to sector 411 of optical disk 403 contain conditions that allow access to optical disk 403 (recording and playback conditions for 2x, 4x, 8x and 16x speeds) ) Of the recording / playback parameters for recording / playing back on optical disc 403, conditions that make it impossible to access optical disc 403 (recording / playback conditions at 1x, 32x, 48x, and 60x) Recording / reproducing parameters for recording / reproducing on / from the optical disc 403 under the conditions closest to the above (recording / reproducing conditions at 2 ⁇ or 16 ⁇ speed) are recorded.
- a recording / reproducing parameter of 2 ⁇ speed is recorded in the sector 404 of the optical disc 403, a recording / reproducing parameter of 2 ⁇ speed is recorded in the sector 405 of the optical disk 403, recording / reproducing parameters of 2 ⁇ speed are recorded. In the sector 406 of the optical disk 403, recording / playback parameters at 4 ⁇ speed are recorded. In the sector 407 of the optical disk 403, an 8 ⁇ speed recording / reproduction parameter is recorded. In the sectors 408 to 411 of the optical disk 403, recording / reproducing parameters of 16 times speed are recorded.
- the optical discs 401 to 403 include sectors 404 to 411 allocated in advance corresponding to a plurality of recording / reproducing conditions.
- the sectors allocated in advance corresponding to the predetermined conditions have optical discs under accessible conditions.
- the recording / reproducing parameters for recording / reproducing on the optical disk are recorded under the conditions closest to the condition (for example, a predetermined condition) that makes the optical disk inaccessible. ing. Therefore, with a combination of an optical disk capable of recording at a plurality of transfer rates and a device capable of recording and reproducing at a plurality of transfer rates, the time for reading the recording / reproducing conditions can always be kept constant.
- the recording / reproducing is performed on the optical disc under the condition closest to the predetermined condition in the sector allocated in advance corresponding to the predetermined condition. It is not limited to recording the recording / reproducing parameters for the recording. As long as the recording / reproducing parameters for recording / reproducing on the optical disc are recorded in the sectors 404 to 411 under conditions that allow access to the optical disc, the recording / reproducing parameters to be recorded are optional. is there.
- Figure 5 shows the details of the recording and playback parameters.
- the optical disc 101 includes a first recording layer 310 and a second recording layer 311 (see FIG. 1).
- Each of the first recording layer 310 and the second recording layer 3111 includes a plurality of sectors allocated in advance corresponding to a plurality of conditions.
- a plurality of recording / reproducing parameters are provided which provide a method for recording / reproducing on each of the first recording layer 310 and the second recording layer 311 under predetermined conditions.
- the recording / reproducing parameter overnight includes a recording / reproducing parameter 501 for the first recording layer 310 and a recording / reproducing parameter 502 for the second recording layer 311. including.
- the recording / playback parameter 501 and the recording / playback parameter 502 are synchronized at the same speed.
- Each of the recording / playback parameter 501 and the recording / playback parameter 502 is used for recording / playback linear velocity information 503, playback power information 504, and playback power information 504, respectively.
- optical disk of the present invention has been described above with reference to FIGS.
- the optical disc 101 is, for example, a circular optical disc. Tracks are formed on a circular optical disk. The shape of the track is, for example, spiral or concentric.
- optical disk of the present invention is an example of a recording medium including a plurality of areas allocated in advance corresponding to a plurality of conditions.
- the case of the transfer rate for recording and reproducing data on the optical disk has been described.
- the applicable range of the present invention is not limited to the case of the transfer rate for recording and reproducing data on the optical disk.
- the transfer rate for accessing the optical disc is concerned, the applicable range of the present invention is arbitrary.
- the transfer rate for recording data on the optical disk and the transfer rate for reproducing data from the optical disk Is also an applicable range of the present invention.
- at least one first area accessible to the optical disc is also provided in at least one second area allocated in advance corresponding to at least one second condition inaccessible to the optical disc.
- a number of first parameters are provided that provide a way to access the optical disc under conditions. Therefore, when an access device (for example, a recording / reproducing device) accesses the second area, the access device moves from the second area to the first area and acquires the first parameter in the first area. The first parameter can be acquired in the second area without any problem. As a result, the access device can acquire the first parameter overnight in a short time.
- an access device for example, a recording / reproducing device
- FIG. 6 shows a configuration of the recording / reproducing apparatus 600 according to the embodiment of the present invention.
- the recording / reproducing device 600 records / reproduces data on / from an optical disk including a plurality of sections allocated in advance corresponding to a plurality of conditions.
- the optical disc is, for example, the optical disc 101 of the embodiment of the present invention.
- the recording / reproducing device 600 is configured so that the optical disk 101 can be inserted.
- the recording / reproducing device 600 includes a starting means 600, a reading means 602, a recording / reproducing means 603, and a head 604.
- the activating means 600 activates the recording / reproducing device 600 in response to an external input to the recording / reproducing device 600.
- the reading means 6002 In response to the activation of the recording / reproducing device 600, the reading means 6002 performs the maximum performance of the recording / reproducing device 600 among the sectors 404 to 411 included in the optical disk 101. Read at least one of a plurality of recording / reproducing parameters from a sector allocated in advance corresponding to the maximum performance condition indicating.
- the reading means 62 In response to the activation of the reproducing apparatus 600, the maximum performance condition indicating the maximum performance of the recording / reproducing apparatus 600 among the sectors 404 to 411 included in the optical disc 101 (16x speed) Read the recording / playback parameters at 8x speed from the sector 408 assigned in advance according to the recording / playback conditions.
- the reading means 602 may read one of the plurality of recording / reproducing parameters from at least one of the sectors 404 to 411 of the optical disc 101.
- the recording / reproducing means 603 records / reproduces the data on / from the optical disk in accordance with the read / reproduced parameters. 3. Recording / playback method
- FIG. 7 shows a recording / reproducing processing procedure according to the embodiment of the present invention.
- FIG. 4 the recording / reproducing processing procedure according to the embodiment of the present invention will be described step by step.
- Step 901 The recording / reproducing apparatus 600 is started in accordance with an external input to the recording / reproducing apparatus 600.
- Step 902 The reading means 602 responds to the activation of the recording / reproducing device 600, and among the sectors 404 to 411 included in the optical disc 101, the recording / reproducing device 600 At least one of a plurality of recording / reproducing parameters is read from a sector allocated in advance corresponding to the maximum performance condition indicating the maximum performance.
- Step 903 The recording / reproducing means 603 records / reproduces data on / from the optical disk in accordance with the read / reproduced parameters.
- an optical disc recordable under a plurality of recording / reproduction conditions (for example, a transfer rate) and a plurality of recording / reproduction conditions
- a device capable of recording and reproducing at for example, a transfer rate
- the time for reading the recording and reproducing conditions can always be constant.
- the recording / reproducing apparatus reads the recording / reproducing parameters from the sector 405 for recording / reproducing at 2 ⁇ speed.
- the recording / reproducing apparatus can immediately record and reproduce data on the optical disc by referring to the recording / reproducing parameter.
- the recording / reproducing apparatus reads the recording / reproducing parameters from the sector 408 for recording / reproducing at 16 ⁇ speed.
- a recording / reproducing parameter for recording / reproducing at 16 ⁇ speed is recorded in a sector 408 of an optical disk 403 supporting 2 to 16 ⁇ speed. Therefore, the recording / reproducing device corresponding to 1 to 16 times speed records and reproduces data on the optical disk 403 with reference to the recording / reproducing parameters.
- the optical disk 401 corresponding to 1 to 2 times speed and the optical disk 402 corresponding to 1 to 8 times speed can obtain an effect which has not existed before.
- the recording / reproducing apparatus reads the recording / reproducing parameters from the sector 408 of the optical disc 401 corresponding to the 1-2 times speed in order to perform the recording / reproducing at 16 times speed.
- a double-speed recording / reproduction parameter is recorded in the sector 408 of the optical disk 401.
- the double-speed recording / reproduction parameters are the recording / reproduction parameters that the recording / reproduction device wanted to read out for recording / reproduction at 16-times speed among the parameters of the recording / reproduction conditions that the optical disc 401 can support. The closest one. Since the recording / reproducing apparatus can record / reproduce at a magnification of 1 to 16 times, the recording / reproducing apparatus can immediately record / reproduce data on / from the optical disc 401 by referring to the recording / reproducing parameters.
- the recording / reproducing apparatus reads the recording / reproducing parameters from the sector 408 of the optical disk 402 corresponding to 1 to 8 times speed in order to record / reproduce at 16 times speed.
- recording / playback parameters of 8 ⁇ speed are recorded.
- the 8x speed recording / playback parameter is one of the parameters of the recording / playback condition that the optical disc 402 can support, and is read out by the recording / playback device for recording / playback at 16x speed. This is the parameter closest to the recording / playback parameter. Since the recording / reproducing apparatus can perform recording / reproducing at 1 to 16 times, data can be immediately recorded / reproduced on / from the optical disc 402 by referring to the recording / reproducing parameters.
- the recording / reproducing device reads the recording / reproducing parameters from the sector 404 for recording / reproducing at 1 ⁇ speed.
- the 1 ⁇ -speed recording / reproduction parameters are recorded in the sector 404 of the optical disk 401 and the sector 404 of the optical disk 402, it corresponds to 1 to 16 ⁇ speed.
- the recording / reproducing device can immediately start recording / reproducing data.
- the optical disc 403 does not support the 1 ⁇ speed recording / reproduction, but the 2 ⁇ speed recording / reproduction condition, which is the condition closest to the condition, is recorded. Therefore, a recording / reproducing apparatus supporting 1 to 16 times speed can immediately start recording / reproducing data.
- the most appropriate recording / reproducing condition can be read out by reading the recording / reproducing parameters all at once by combining the apparatus and the optical disk.
- the recording / reproducing speed has been described as an example of the recording / reproducing condition, but the present invention is not limited to this.
- the recording / reproducing condition may be, for example, a recording linear density.
- the recording / reproducing condition is the recording linear density
- the recording / reproducing parameters relating to the recording linear density are recorded in a plurality of sectors.
- an example of the CLV mode in which the transfer rate is constant has been described.
- the rotational speed in the CAV mode in which the access is performed at a constant rotational speed may be used. In this way, the same effect can be obtained when the recording / reproducing apparatus performs recording / reproducing on the same optical disk under a plurality of recording / reproducing conditions.
- the applicable range of the present invention is not limited to the form relating to the transfer rate for recording / reproducing the data on / from the optical disc.
- the applicable range of the present invention includes a mode related to a transfer rate for recording data on an optical disc and a mode related to a transfer rate for reproducing data from an optical disc.
- the scope of the present invention is arbitrary as long as the mode is related to a transfer rate for accessing an optical disc.
- the recording / reproducing device 600 functions as an access device.
- the recording / reproducing device 603 functions as an access device. Accesses the optical disk according to the read recording / playback parameters.
- Item 1 An access device for accessing an optical disk including a plurality of areas allocated in advance corresponding to a plurality of conditions,
- Activating means for activating the access device In the plurality of areas, a plurality of parameters providing a method of accessing the optical disc under the plurality of conditions are recorded. Activating means for activating the access device;
- Reading In response to the activation of the access device, at least one of the plurality of parameters from a region allocated in advance corresponding to a maximum performance condition indicating a maximum performance of the access device among the plurality of regions. Reading means to read one
- Item 2 The access device according to Item 1, further comprising an access unit for accessing the optical disc in an access method provided by the read at least one parameter.
- the plurality of areas include: at least one first area assigned in advance corresponding to at least one first condition accessible to the optical disc among the plurality of conditions; And at least one second area pre-allocated corresponding to at least one second condition that makes the optical disc inaccessible,
- a plurality of first parameters providing a method of accessing the optical disc under the at least one first condition are recorded.
- An access device according to item 1.
- Item 4 An access method for accessing an optical disk including a plurality of areas allocated in advance corresponding to a plurality of conditions
- a plurality of parameters providing a method of accessing the optical disc under the plurality of conditions are recorded.
- At least one first area accessible to the optical disc is also provided in at least one second area allocated in advance corresponding to at least one second condition that makes the optical disc inaccessible.
- a number of first parameters are provided that provide a way to access the optical disc under conditions. Therefore, if the access device accesses the second area (when the access device accesses the second area, the access device moves from the second area to the first area and does not acquire the first parameter in the first area). As a result, the access device can acquire the first parameter overnight in a short time.
- the combination of an optical disk capable of recording under a plurality of recording / reproducing conditions and a device capable of recording / reproducing under a plurality of recording / reproducing conditions has an excellent effect that the time for reading out the recording / reproducing conditions can always be kept constant. Obtainable.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/595,240 US20070212032A1 (en) | 2003-09-30 | 2004-09-29 | Optical disc, access apparatus and access method |
JP2005514323A JPWO2005031717A1 (ja) | 2003-09-30 | 2004-09-29 | 光ディスク、アクセス装置およびアクセス方法 |
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JP2003-342108 | 2003-09-30 | ||
JP2003342108 | 2003-09-30 |
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WO2005031717A1 true WO2005031717A1 (ja) | 2005-04-07 |
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PCT/JP2004/014708 WO2005031717A1 (ja) | 2003-09-30 | 2004-09-29 | 光ディスク、アクセス装置およびアクセス方法 |
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US (1) | US20070212032A1 (ja) |
JP (1) | JPWO2005031717A1 (ja) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US9691426B2 (en) | 2015-01-28 | 2017-06-27 | Panasonic Intellectual Property Management Co., Ltd. | Optical device and optical disc recording or reproducing method for optical disc including BCA having zone format identifier |
Citations (3)
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JP2002245625A (ja) * | 2001-02-19 | 2002-08-30 | Pioneer Electronic Corp | 記録媒体、情報記録装置及び情報記録方法、情報記録媒体並びに記録プログラム |
JP2003045036A (ja) * | 2001-07-27 | 2003-02-14 | Toshiba Corp | 光ディスク、光ディスク記録再生装置及び光ディスク記録再生方法 |
JP2003203341A (ja) * | 2001-11-02 | 2003-07-18 | Victor Co Of Japan Ltd | 光ディスク、光ディスク記録再生装置及び光ディスク記録再生方法 |
-
2004
- 2004-09-29 US US10/595,240 patent/US20070212032A1/en not_active Abandoned
- 2004-09-29 JP JP2005514323A patent/JPWO2005031717A1/ja not_active Withdrawn
- 2004-09-29 WO PCT/JP2004/014708 patent/WO2005031717A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002245625A (ja) * | 2001-02-19 | 2002-08-30 | Pioneer Electronic Corp | 記録媒体、情報記録装置及び情報記録方法、情報記録媒体並びに記録プログラム |
JP2003045036A (ja) * | 2001-07-27 | 2003-02-14 | Toshiba Corp | 光ディスク、光ディスク記録再生装置及び光ディスク記録再生方法 |
JP2003203341A (ja) * | 2001-11-02 | 2003-07-18 | Victor Co Of Japan Ltd | 光ディスク、光ディスク記録再生装置及び光ディスク記録再生方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US9691426B2 (en) | 2015-01-28 | 2017-06-27 | Panasonic Intellectual Property Management Co., Ltd. | Optical device and optical disc recording or reproducing method for optical disc including BCA having zone format identifier |
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US20070212032A1 (en) | 2007-09-13 |
JPWO2005031717A1 (ja) | 2006-12-07 |
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