WO2003098624A1 - Support d'enregistrement d'informations, procede d'enregistrement d'un support d'enregistrement d'informations, dispositif d'enregistrement d'un support d'enregistrement d'informations et dispositif de reproduction d'un support d'enregistrement d'informations - Google Patents

Support d'enregistrement d'informations, procede d'enregistrement d'un support d'enregistrement d'informations, dispositif d'enregistrement d'un support d'enregistrement d'informations et dispositif de reproduction d'un support d'enregistrement d'informations Download PDF

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Publication number
WO2003098624A1
WO2003098624A1 PCT/JP2003/006208 JP0306208W WO03098624A1 WO 2003098624 A1 WO2003098624 A1 WO 2003098624A1 JP 0306208 W JP0306208 W JP 0306208W WO 03098624 A1 WO03098624 A1 WO 03098624A1
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WIPO (PCT)
Prior art keywords
data
control information
recording medium
area
recording
Prior art date
Application number
PCT/JP2003/006208
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English (en)
Japanese (ja)
Inventor
Yoshimi Tomita
Original Assignee
Pioneer Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Corporation filed Critical Pioneer Corporation
Priority to AU2003242330A priority Critical patent/AU2003242330A1/en
Publication of WO2003098624A1 publication Critical patent/WO2003098624A1/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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes

Definitions

  • Information recording medium information recording medium recording method, information recording medium recording apparatus, and information recording medium reproducing apparatus
  • the present invention relates to an information recording medium having a high recording density such as an optical disk, an information recording medium recording method, an information recording medium recording apparatus, and an information recording medium, which have an extremely thin light-transmitting film and perform recording and reproduction using an optical system having a high numerical aperture (NA).
  • NA numerical aperture
  • the present invention relates to a technical field related to an information recording medium reproducing device. Background art
  • optical disks with excellent high-speed accessibility and portability and low bit unit cost are attracting attention.
  • development to further increase the storage capacity and recording density is being promoted, and R & D is being carried out from various aspects, such as the device to be used, the recording format, the material of the recording medium, and the structure of the recording medium. Have been.
  • An object of the present invention is to provide an information recording medium, an information recording medium recording method, an information recording medium recording device, and an information recording medium reproducing device having:
  • the information recording medium of the present invention comprises a reproduction data area for recording reproduction data to be reproduced, and control information including at least reproduction control information for reproducing the reproduction data for one track rotation.
  • the data recording area includes at least an area for recording data to be reproduced and an area for recording control information for performing reproduction control.
  • the control information is recorded as the same data on a plurality of tracks, using one rotation of the optical disk track as one unit.
  • This control information is recorded in accordance with the CAV (Constant Angle Velocity) spindle rotation control, and is read out at a constant rotation speed when read out. Since it is recorded using a plurality of tracks, it has a predetermined width in the radial direction of the optical disk, and even if the optical disk is eccentric, the trace of the beam spot of the optical pickup fits within the predetermined width.
  • phase modulation for example, is expressed by forming a predetermined number of pits, for example, 50% duty, in the first half of the pit array and mirroring the rear half of the pit array, while the logic "1""Is a modulation method represented by making the first half of the pit array a mirror surface state and forming a predetermined number of pits with a duty of 50% in the second half.
  • the data area for recording the control information is divided into a plurality of areas, and the phase-modulated control information is divided and recorded corresponding to each of the divided data areas. Further, a synchronization signal (in the present application, “synchronization signal” is appropriately described as “Syn c”) is provided in each of the divided data areas. The pattern of the synchronization signal is recorded in a pattern different from the modulation pattern of the control information. Therefore, the reproduction of the synchronization signal can be reliably performed.
  • the information recording medium of the present invention is characterized in that control information is divided into a large number of recording areas and recorded, and a synchronization signal is recorded in each of the divided areas in a pattern different from the modulation pattern of the control information. And Therefore, the recording density of the optical disk is improved, the NA of the optical system to be used is high, and the distance from the disk surface to the pit is short. And the possibility that the synchronization signal cannot be reproduced due to a small scratch is solved. That is, since many synchronization signals are recorded at a predetermined interval, even if one of them cannot be reproduced, another synchronization signal in another part can be read, and the data recorded by error correction can be read. Can be reproduced.
  • control information is RLL-modulated and recorded.
  • the control information is RLL (Run Length Limited) modulated, and then phase modulated and recorded.
  • RLL modulation is a conversion method in which a 4-bit code is represented by a 5-bit code, for example, and the minimum run length is 0 and the maximum run length is 2. That is, since the maximum run length is 2, a pattern in which three or more 0s are continuous and both ends are 1 does not exist in this 415 modulation. Therefore, in the data in which the control information is converted, there is no data in the data with three or more consecutive 0's, and special meaning should be given to the code with three or more consecutive 0's. Becomes possible.
  • the synchronization signal is configured by the RLL modulation pattern.
  • a violation pattern of RLL modulation that is, a pattern not represented by RLL modulation is used as a synchronization signal.
  • a code of three or more consecutive 0s is used as a pattern of a synchronization signal, so that the synchronization signal is reliably reproduced separately from control information.
  • the synchronization signal is assigned a different number corresponding to each of the divided data areas.
  • the number of the synchronization signal is known. If at least one of the divided data areas containing the same synchronization signal number can be read in the control information recorded multiple times on the information recording medium, the data corresponding to the synchronization signal number is reproduced. Becomes possible.
  • the information recording medium recording method of the present invention includes a reproduction data area for recording reproduction data to be reproduced and control information including at least reproduction control information for reproducing the reproduction data.
  • the information recording medium recording method of the present invention at least an area for recording data to be reproduced as a data recording area and control information for performing reproduction control are recorded.
  • the control information is recorded on a plurality of tracks as the same data with one rotation of a track as one unit. This control information is recorded corresponding to the CAV, and is read out at a constant rotation speed when read out.
  • the optical disk since recording is performed using a plurality of tracks, the optical disk has a predetermined width in the radial direction of the optical disk, and even if the optical disk is eccentric, the trace of the beam spot of the optical pickup has the predetermined width. Fits inside. Therefore, at the start of recording and reproduction, information on the optical disk control method, for example, the tracking method or the rotation control method, can be reproduced without tracking control, and it is possible to obtain control information. Become.
  • the data area for recording control information is divided into a plurality of areas, and the control information is also divided and recorded for each data area.
  • the control information is RLL-modulated, and an RLL-modulated violation pattern is given to each data area as a synchronization signal. Further, the RLL-modulated control information and the synchronization signal are phase-modulated and recorded in a predetermined data area.
  • the synchronization signal recorded by such a recording method is reproduced separately from other control information. Also, since a large number of synchronization signals are recorded at predetermined intervals, control information can be read if one of them is reproduced.
  • the information recording medium recording method further includes assigning a different number to the synchronization signal corresponding to each of the data areas divided in the data area dividing step. Numbering step.
  • the pattern of the synchronization signal when the pattern of the synchronization signal is detected, if the number of the synchronization signal is known, the location of the data can be known, and even if a certain synchronization signal cannot be read, the data can be restored by error correction. Become.
  • the information recording medium recording apparatus of the present invention comprises: a reproduction data area for recording reproduction data to be reproduced; and control information including at least reproduction control information for reproducing the reproduction data.
  • What is claimed is: 1.
  • Pattern assigning means for assigning the RLL-modulated violation pattern as a synchronization signal to each of the regions; and phase-modulating the RLL-modulated control information and the violation pattern as a synchronization signal.
  • an information recording medium including at least an area for recording data to be reproduced as a data recording area and an area for recording control information for performing reproduction control, for example, an optical disk
  • the control information is a recording device that records one rotation of a track as one unit and records the same data on a plurality of tracks.
  • This control information is recorded in accordance with CAV, and can be read out at a constant rotation speed when read out.
  • the control information since the control information is recorded using a plurality of tracks, it has a predetermined width in the radial direction of the optical disk, and even if the optical disk is eccentric, the beam spot of the optical pickup is Trace fits within its specified width. Therefore, at the start of reproduction, first, information such as a control method of the optical disk, for example, a tracking method or a rotation control method, can be reproduced in a state where tracking control is not performed.
  • a data area for recording control information is divided into a plurality of areas, and control information is also divided and recorded for each data area.
  • the control information is RLL-modulated, and an RLL-modulated biolation pattern is given to each data area as a synchronization signal. Further, the RLL-modulated control information and the synchronization signal are phase-modulated and recorded in a predetermined data area.
  • the synchronization signal recorded by such a recording device is reproduced separately from other control information. Also, since many synchronization signals are recorded at predetermined intervals, even if one of them cannot be reproduced, other synchronization signals in other parts can be read and the data recorded by error correction Can be reproduced.
  • the information recording medium recording device Preferably, the synchronization signal includes a number assigning means for assigning a different number to each of the data areas divided by the data area dividing means.
  • the number of the synchronization signal is known. If at least one of the divided data areas containing the same synchronization signal number can be read in the control information recorded multiple times on the information recording medium, the data corresponding to the synchronization signal number is reproduced. Becomes possible.
  • the information recording medium reproducing apparatus of the present invention comprises a reproduction data area for recording reproduction data to be reproduced and control information including at least reproduction control information for reproducing the reproduction data.
  • An information recording medium reproducing apparatus that reproduces data recorded on an information recording medium having a control information area that is CAV-recorded on a plurality of tracks in units of rotations, wherein the recorded data is Reading means for reading; a phase demodulation means for phase demodulating a signal read by the reading means; a pattern detecting means for detecting a RLL-modulated biolation pattern from the signal demodulated by the phase demodulation means; A signal having a violation pattern detected by the pattern detection means is used as a synchronization signal, and phase demodulation is performed based on the synchronization signal. And a data demodulation means for demodulating the data from the No..
  • reproduction is performed from an information recording medium including at least an area for recording data to be reproduced as a data recording area and an area on which control information for performing reproduction control is recorded.
  • control information is recorded as the same data on a plurality of tracks, using one rotation of the track as one unit.
  • This control information is recorded corresponding to the CAV, and can be read out at a constant rotation speed.
  • the control information since the control information is recorded using a plurality of tracks, the control information has a predetermined width in the radial direction of the optical disc, and even if the optical disc is unbalanced, the trace of the beam spot of the optical pickup can be traced. It fits within the predetermined width. Therefore, at the start of reproduction, information on the optical disk control method, for example, the tracking method or the rotation control method, can be reproduced without tracking control.
  • the control information is recorded in a plurality of divided data areas, and the control information is also recorded in each of the divided data areas.
  • the control information is RLL-modulated, and Since the RLL modulation violation pattern is given as a synchronization signal to this data area, the synchronization signal can be reliably reproduced.
  • FIG. 1 is a diagram showing a data area of an optical disc according to the present invention.
  • FIG. 2 is a diagram for explaining dust adhering to the surface of an optical disk using a low NA optical system and errors during data reproduction.
  • FIG. 3 is a diagram showing an example of a format of control information in the optical system of FIG.
  • FIG. 4 is a diagram for explaining dust adhering to the surface of an optical disc using a high NA optical system and errors during data reproduction.
  • FIG. 5 is a diagram showing a format of control information of the optical disc according to the present invention.
  • FIG. 6 is a diagram showing a recording state of control information of the optical disc according to the present invention.
  • FIG. 7 is a diagram for explaining PE modulation.
  • FIG. 8 is a diagram illustrating a conversion example of the RLL modulation.
  • FIG. 9 is a block diagram showing the configuration of the information recording medium recording device according to the present invention.
  • FIG. 10 is a block diagram showing a configuration of an information recording medium reproducing device according to the present invention.
  • FIG. 1 is a diagram showing a data area of an optical disc according to the information recording medium of the present invention.
  • Fig. 2 is a diagram for explaining dust adhering to the surface of an optical disk using a low NA optical system and errors during data reproduction.
  • Fig. 3 shows the format of the control information of the optical disk in Fig. 2. It is a figure showing an example.
  • Fig. 4 is a diagram for explaining dust adhering to the surface of an optical disk using a high NA optical system and errors in data reproduction, and
  • Fig. 5 shows a format of control information of the optical disk according to the present invention.
  • FIG. FIG. 6 is a diagram showing a recording state of control information on the optical disc according to the present invention
  • FIG. 7 is a diagram showing PE modulation
  • FIG. 8 is a diagram showing a conversion example for performing RLL modulation of control information. is there.
  • the optical disk 10 records information related to control during recording and reproduction of the optical disk, for example, from the inner circumference to the outer circumference centering on the center hole 11 on the recording surface on the disk body.
  • Control information recording area 12 Control data area 13 in which other control signals are recorded; Manufacturing data area 14 in which optical disk manufacturer records necessary data; User records desired data It is divided into recording areas such as the data area 15.
  • these arrangements are not limited to this.
  • the data format of the control information recorded in the control information recording area 12 is provided, and at least the control information recording area 12 and the data area 15 are provided.
  • the control information recording area 12 has a radial width greater than the maximum eccentricity of the optical disc 10 and at least identification information for identifying a tracking control method for reproducing recorded data.
  • the control data including the control data is recorded by a modulation method capable of detecting the control data in a state where the tracking servo loop in the tracking servo circuit is opened. Further, the same control data is recorded on a plurality of tracks in one unit of one rotation of the track in the control information recording area 12, and the control data of the same portion is recorded so as to be aligned in the radial direction of the optical disc 10.
  • the control information recording area 12 has such a data structure because there are two types of optical disks.
  • Tracks are provided on one optical disc, for example, like a compact disc.
  • a group is formed continuously with the track, and information is recorded on the group or on a land formed between the groups.
  • continuous tracking control can be performed according to a principle such as a push-pull method.
  • another optical disk is formed at a predetermined interval, which is called a "wobblepit".
  • the wobble pit is located on the left and right of the center of the track (virtual track). Therefore, the tracking error signal can be reproduced from the level difference of the RF signal at the timing of each wobble pit.
  • a sample servo method in which the tracking signal is held up to the position of the next sample bit is used for the optical disc of this mode.
  • the control information recording area 12 records control information including information for detecting the tracking method of the optical disc.
  • the control information recording area 12 has a structure having a plurality of tracks in which the same control information is recorded in a predetermined width range in the radial direction of the optical disc 10 as described above. The control information can be reproduced without tracking.
  • the tracking servo loop is opened and the optical disk 10 is rotated at a constant rotational angular velocity, and the control information recording area 12 is rotated.
  • the identification signal corresponding to the identification information can be obtained from the detection signal when the optical pickup crosses a plurality of tracks on which the control data is recorded due to the eccentricity of the optical disk 10. Can be extracted and interpreted. Therefore, even if the tracking control method of the optical disk is unknown in advance, the tracking method can be identified by detecting the identification signal.
  • FIG. 2 shows an optical disk 16 having a low NA (for example, NAO.6) and a light-transmitting film 17a on the substrate 20a having a relatively large thickness of 0.6 mm, and a light-transmitting film 17a for the light beam 18a.
  • NA for example, NAO.6
  • a light-transmitting film 17a for the light beam 18a.
  • dust 19 having a diameter of 0.2 mm adheres to the top.
  • the diameter of the beam spot on the light transmitting film 17a is 0.52 mm. So in this case, The beam spot of the beam 18a is sufficiently larger than the dust 19, and it is possible to reproduce the pit provided on the back surface of the light transmitting film 17a.
  • the format of the identification signal in the control information recording area 12 is shown in FIG.
  • One track (length of one rotation) is divided into three segments, each segment consisting of 177 bits in length, and 11 bits or 10 in between segments.
  • a 9-bit gap (blank mirror area) is formed.
  • One segment consists of a 16-bit preamble (Preamble) and a 1-bit synchronization signal (Sync), a 24-bit track address and a segment address, 128-bit data, It consists of an 8-bit error detection code (CRC).
  • An identification signal for identifying the servo system is recorded in the 128-bit control data.
  • the control data includes the reflectivity of the optical disk and the constant angular velocity (C
  • AV constant linear velocity discrimination
  • read power read power
  • track discrimination read power
  • track discrimination read power
  • a 1-bit synchronization signal is provided in each segment. This is because the synchronization signal can be sufficiently detected because the influence of dust 19 or scratches is small when data is reproduced as described above.
  • the optical disc 10 has a high NA (for example, 0.85 NA) and the light transmitting film 17b on the substrate 20b is as thin as 0.1 mm.
  • NA for example, 0.85 NA
  • the diameter of the beam spot on the light transmitting film 17 b is 0 ⁇ 1. 37 mm
  • the beam spot of the light beam 18 b is smaller than the dust 19, and the light transmitting film 1
  • FIG. 5 shows the optical disk 1
  • the recording arrangement of the synchronization signal which can detect the synchronization signal recorded in the control information recording area 12 even when dust 19 adheres to 0 is shown.
  • one track (the length of one rotation) is divided into three segments, and a gap is provided between the segments.
  • the segment is divided into eight data areas, and an 8-bit synchronization signal (Sync) is provided at the head of each data area.
  • 8-bit synchronization signal Sync
  • eight synchronization signals are arranged at the same interval in each segment, and a total of 24 synchronization signals are recorded in one track.
  • the gap between each segment consists of an 8-bit mirror area where nothing is recorded and a preamble area with a fixed 8-bit pattern.
  • the control data includes an identification signal for identifying the servo system, a signal for the reflectance of the optical disk, a constant rotational angular velocity, a constant linear rotational velocity, a read power, a distinction between tracks (land or group), and the like.
  • an identification signal for identifying the servo system a signal for the reflectance of the optical disk
  • a constant rotational angular velocity a constant linear rotational velocity
  • a read power a distinction between tracks (land or group), and the like.
  • exactly the same information is recorded in each segment.
  • the number of segments in one track is not limited to three, and it is not limited to dividing one segment into eight data areas.
  • the data in the control information recording area 12 when driving the optical disk, the data in the control information recording area 12 must first be read. That is, it is necessary to know the tracking method and the rotation control method. For this reason, in consideration of the eccentricity of the optical disk, information is recorded in the control information recording area 12 in the form shown in FIG. In other words, a pit corresponding to the data shown in Fig. 5 is formed on the virtual track, and a plurality of tracks having the same data configuration are formed so that the same signal is aligned at the same position in the radial direction of the optical disk. Is done. The plurality of beams are such that the beam spot forms a width that does not deviate from the control information recording area 12 even if the optical disc is eccentric.
  • the tracking servo loop is opened, and the optical disk is rotated at a predetermined constant angular velocity. Since the optical disk rotates in an eccentric state, the beam spot traces the control information recording area 12 across the track in the direction indicated by the arrow P or the arrow P 'in FIG. 6 (a). Since the same signal is recorded in the control information recording area 12 so as to be aligned at the same radial position, even if the information detection points are located on each track, the same track (virtual) is used as shown in Fig. 6 (b). (Track) The same reproduction signal as when tracing up is obtained.
  • Optical disc 10 that is, light with extremely thin light-transmitting film 17b using optical system with high NA
  • the data in the control information recording area 12 in the format shown in Fig. 5 on the disc, even if dust 19 or scratches are on the Sync pattern, many other Sync patterns are not used. If any one of them can be reproduced, the data can be reproduced using error correction. Therefore, it is possible to maintain a sufficiently strong reproduction ability against dust 19 and scratches even if the optical transmission film 17b is an extremely thin optical disk by using a ⁇ NA optical system.
  • data is digitally PE-modulated and recorded as shown in FIG.
  • This PE modulation is expressed by forming a predetermined number of pits, for example, 50% duty, in the first half of the pit array and mirroring the rear half of the pit array, while the logic "0" “1” is represented by making the front half of the pit array a mirror surface state and forming a predetermined number of pits with a duty of 50% in the rear half.
  • the Sync pattern can use the PE modulation violation. However, in the PE region, data is read without tracking and therefore no clock is extracted, so this pattern cannot be used as the Sync pattern. Then, the data is RLL-modulated, and the run-length violation pattern, that is, the pattern that does not appear in the RLL modulation, can be converted into a Sync pattern. Although multiple segments have been recorded to ensure the reading of data in the PE area, it is possible to reduce the multiplexing with multiple Sync.
  • FIG. 1 As an example of the RLL code, there is 4-5 modulation shown in FIG. This is a conversion method in which a 4-bit code is represented by a 5-bit code.
  • the minimum run length d is 0, and the maximum run length d is 2. That is, since the maximum run length d is 2, a pattern in which three or more 0s are continuous and both ends are 1 does not exist in this 4-5 modulation. Therefore, by setting such a violation pattern as a Sync pattern, it becomes possible to distinguish Sync from other data and detect it.
  • FIG. 9 is a block diagram showing the configuration of the optical disk recording apparatus according to the present invention.
  • the information recording medium recording apparatus 1 of the present embodiment includes a clock generation unit 21 that generates a reference clock, and a PLL that generates a clock for recording data in the control information recording area 12 of the optical disc 10. (P hase Locked Loop) 22, recording signal generation section 23, 1 1 ⁇ modulation section 24, synchronization signal addition section 25, £ modulation section 26, control data area 13 of optical disc 10, Recording signal modulation 27 for modulating the data to be recorded in the manufacturing data area 14 and data area 15; a laser drive section 28 for driving the recording laser; and a control section 29 for controlling the operation of the entire apparatus. And an optical pickup 30a, a slider 31a, and a spindle motor 32a as mechanical parts.
  • the mouthpiece generating unit 21 generates a mouthpiece which is a reference when recording data.
  • the PLL 22 In order to record data in the control information recording area 12, the PLL 22 generates an additional clock for recording data in synchronization with the clock of the clock generator 21.
  • the recording signal generating section 23 generates control data to be recorded, and the modulation section 24 performs RLL modulation as shown in FIG.
  • the synchronization signal adding section 25 generates a Sync pattern based on the RLL modulation biolation pattern and adds it to the recording signal. These signals are PE-modulated by the PE modulation section 26.
  • a recording signal for recording in the control data area 13, the manufacturing data area 14, and the data area 15 is converted into a recording signal by the recording signal modulation section 27.
  • data processing that is normally performed when recording data, such as addition of a signal for error correction, is performed.
  • the modulated data to be recorded is input to the laser drive unit 28, further input to the optical pickup 30a, and controlled by the control unit 29 to be recorded on the optical disk 10.
  • the position of the optical pickup 30a in the optical disk radial direction is operated by the control unit 29 of the slider 31a, and the rotation of the optical disk 10 is operated by the operation of the control unit 29 of the spindle motor 32a. Controlled.
  • other general functions required as a recording apparatus for example, an operation unit and a display unit are provided.
  • FIG. 10 is a block diagram showing a configuration of an optical disk reproducing apparatus according to the present invention.
  • the information recording medium reproducing device 2 of this embodiment includes a reproduction signal processing unit 41 and a reproduction data processing unit 13 for processing reproduction signals from the control data area 13, the manufacturing data area 14, and the data area 15 of the optical disc 10.
  • PLL 42, synchronization detector 43, demodulator 44, error correction unit 45, data restoration unit 46, and PEP demodulator for processing the playback signal from the control information recording area 12 of the optical disk 10.
  • Data recorded on the optical disk 10 is picked up by the optical pickup 30b.
  • the position of the optical pickup 30b in the disk radial direction is determined by controlling the slider 31b based on the control unit 53, and the rotation of the optical disk 10 is controlled by the spindle motor 32b. Is controlled based on the control unit 53 to determine the rotation speed.
  • the signal picked up by the optical pickup 30b is subjected to signal processing in a reproduction signal processing unit 41 so as to be suitable for data processing in a subsequent stage.
  • data is reproduced by the PLL 42 based on the signal from the reproduction signal processor 41.
  • a clock for the synchronization is generated and supplied to the synchronization detection unit 43 and the demodulation unit 44.
  • a synchronization detection section 43 detects a synchronization signal from a signal from the reproduction signal processing section 41, and then a demodulation section 44 demodulates data. Thereafter, the error is corrected by the error correction unit 45, and the data is restored to the original complete data by the data restoration unit 46 and output.
  • the signal of the reproduction signal processing section 41 demodulates the PE-modulated signal by the PEP demodulation section 47. I do.
  • the synchronization detection section 48 detects a synchronization signal from the violation pattern of the RLL modulation, and the data demodulation section 49 demodulates data based on the synchronization signal.
  • the error correction section 50 corrects the error and outputs it as control data.
  • the reproduction signal processing from the control information recording area 12 is controlled by the clock from the clock generator 51.
  • the data output as the control data is input to the CPU 52, and the reproduction operation of the entire apparatus is controlled. '
  • an information medium recording / reproducing apparatus in which recording / reproducing is integrated can be configured by combining the above-described recording apparatus and reproducing apparatus.
  • the circuit section and the mechanical section that can be shared can be used by associating operations according to recording and reproduction.
  • a pattern prohibited by the RLL modulation can be used as a synchronization signal, and thus the synchronization signal can be reliably read. Further, by inputting a number for each synchronization signal, data reproduction by error correction is reliably performed.
  • the present invention is not limited to the above-described embodiments, but can be appropriately modified within a scope not contrary to the gist or idea of the invention, which can be read from the claims and the entire specification.
  • the information recording medium recording method, the information recording medium recording device, and the information recording medium reproducing device are also included in the technical idea of the present invention.
  • Information recording medium, information recording medium recording method, and information recording medium recording are, for example, various types of information recording media of high recording density and large capacity such as optical discs with an extremely thin light-transmitting film, which are recorded and reproduced using a high NA optical system for consumer or business use.
  • the present invention is also applicable to various recording devices, reproduction devices, and the like that are mounted on, or connectable to, various types of computer equipment for consumer or business use, for example.

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  • Optical Recording Or Reproduction (AREA)
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Abstract

Selon l'invention, une piste est séparée en trois segments et un espace est ménagé entre chaque segment. Chaque segment est divisé en huit zones de données et un signal synchrone à 8 bits est fourni en tête de chaque zone de données. En conséquence, dans chaque segment, huit signaux synchrones sont placés à intervalles égaux et dans une piste, un total de 24 signaux synchrones sont enregistrés. Chaque espace entre les segments contient une zone miroir à 8 bits dans laquelle aucun élément n'est enregistré, ainsi qu'une zone de préambule à 8 bits de configuration fixe. Des données de commande contiennent un signal d'identification servant à identifier un signal d'asservissement, un facteur de réflexion de disque optique, des signaux permettant de différencier la constante de vitesse angulaire de rotation de la constante de vitesse linéaire de rotation, pour distinguer une puissance prédominante, une piste ou similaire.
PCT/JP2003/006208 2002-05-22 2003-05-19 Support d'enregistrement d'informations, procede d'enregistrement d'un support d'enregistrement d'informations, dispositif d'enregistrement d'un support d'enregistrement d'informations et dispositif de reproduction d'un support d'enregistrement d'informations WO2003098624A1 (fr)

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AU2003242330A AU2003242330A1 (en) 2002-05-22 2003-05-19 Information recording medium, information recording medium recording method, information recording medium recording device, and information recording medium reproduction device

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JP2002147325A JP2003338138A (ja) 2002-05-22 2002-05-22 情報記録媒体及び情報記録媒体記録方法並びに情報記録媒体記録装置と情報記録媒体再生装置
JP2002-147325 2002-05-22

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CN1324575C (zh) * 2004-06-02 2007-07-04 三洋电机株式会社 光盘记录方法及装置
CN100382157C (zh) * 2004-02-27 2008-04-16 索尼株式会社 操作条件设置系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005086479A1 (fr) * 2004-03-05 2005-09-15 Pioneer Corporation Appareil de traitement de donnees, appareil de stockage de donnees, methode de traitement de donnees, programme connexe et support d'enregistrement contenant le programme

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US4977553A (en) * 1987-05-22 1990-12-11 Pioneer Electronic Corporation Method and apparatus for identifying the type of servo system to be used with a given disc
JPH09231578A (ja) * 1996-02-26 1997-09-05 Ricoh Co Ltd 光ディスク
JPH10241299A (ja) * 1996-12-26 1998-09-11 Sony Corp ディスク状情報記録媒体、情報記録再生装置および同期確立の方法

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US4977553A (en) * 1987-05-22 1990-12-11 Pioneer Electronic Corporation Method and apparatus for identifying the type of servo system to be used with a given disc
JPH09231578A (ja) * 1996-02-26 1997-09-05 Ricoh Co Ltd 光ディスク
JPH10241299A (ja) * 1996-12-26 1998-09-11 Sony Corp ディスク状情報記録媒体、情報記録再生装置および同期確立の方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100382157C (zh) * 2004-02-27 2008-04-16 索尼株式会社 操作条件设置系统
CN1324575C (zh) * 2004-06-02 2007-07-04 三洋电机株式会社 光盘记录方法及装置

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JP2003338138A (ja) 2003-11-28

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