WO2004059633A1 - 光ディスク - Google Patents
光ディスク Download PDFInfo
- Publication number
- WO2004059633A1 WO2004059633A1 PCT/JP2003/003555 JP0303555W WO2004059633A1 WO 2004059633 A1 WO2004059633 A1 WO 2004059633A1 JP 0303555 W JP0303555 W JP 0303555W WO 2004059633 A1 WO2004059633 A1 WO 2004059633A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- address
- group
- track
- optical disc
- groups
- Prior art date
Links
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
-
- 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
- G11B7/00718—Groove and land recording, i.e. user data recorded both in the grooves and on the lands
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24073—Tracks
- G11B7/24082—Meandering
Definitions
- optical disk means a disk on which data can be recorded and / or reproduced by using optical means. This is a broad concept, including discs of the type that can write data by magneto-optical recording, phase change, or organic dye change. Background art
- Optical discs have been increasing in density, and taking a magneto-optical disc as an example, the standard of the magneto-optical disc is, for example, AS-MO (Advanced Storage Magneto Optical Disk).
- a magneto-optical disk of the same standard has a storage capacity of about 6 GB on one side with a diameter of 12 O mm.
- tracks are formed by alternately forming groups G and lands L in the radial direction (the direction of arrow Ra).
- Each track is provided with an area for forming a plurality of fine lock marks 70 at regular intervals in the circumferential direction of the magneto-optical disk, and each track is divided into a plurality of segments by this area.
- These segments include an address segment 8 and a data segment 9, and one frame is composed of one address segment 8 and 38 data segments 9.
- the data segment 9 is an area for recording data by the user according to the magneto-optical recording method
- the address segment 8 is an area for recording address data such as a track address.
- the recording area of the magneto-optical disk is divided into a plurality of bands B (zones), and in each band B, a plurality of frames are arranged in a radial direction and a circumferential direction. .
- the frames are arranged from frame 1 to frame n.
- the numbers (frame addresses) of a plurality of frames arranged in the radial direction are the same.
- the address data recorded in the address segment 8 shown in FIG. 7 includes a frame address, a band address, and a track address.
- a so-called wobble method in which a coupling section 80 is provided on one side wall of the group G is adopted.
- the shape of the wobbling portion 80 is schematically shown. This is the same in other attached drawings of FIGS. 1 to 6 described later.
- track addresses such as track N, (N + 1), or (N + 2) of group G are assigned to one address segment 8 for the purpose of accurate reading.
- Two coupling sections 80a and 80b are provided side by side in the disk circumferential direction.
- These two wobbling portions 80 a and 80 b are of a staggered type provided separately on each of a pair of side walls of the group G. With such a staggered method, even if it becomes difficult to detect one of the two wobbling sections 80a and 80b when the magneto-optical disk tilts, the other can be detected. As a result, the reading of the address data can be ensured.
- the push-pull method is used for reading the above address data. Briefly describing this push-pull method, first, as shown in FIG. 10, the laser beam condensed by the objective lens 60 is applied to the concave and convex surfaces on which the lands L and the groups G are formed. When the light is reflected, positive and negative reflected diffracted light R1 is generated. As a result, the reflected diffracted light R1 in addition to the directly reflected light R0 is incident on the objective lens 60. Such return light is received by a two-segment detector 61 having two light receiving areas 61a and 61b, and two light receiving areas 61a and 61b output from the bracket detector 61.
- This signal is a push-pull signal, and based on this signal, the amount of wobble in the portion of the wobbling portion irradiated with the laser beam can be determined.
- the above-described pattern of the magneto-optical disk having the address segments 8 and the data segments 9 is formed by rotating the glass master coated with the photoresist while rotating the glass master.
- the laser beam condensed by the object lens is exposed by moving the laser beam in the radial direction, and is formed by developing the laser beam.
- one laser beam is divided into two beams, and when exposing a portion corresponding to the coupling unit 80, control is performed so that only one of the two beams is enabled. Then, one side wall is removed, and the opposite side wall can form a non-wobble group G.
- the track pitch is 0.6'm, and if the track pitch is about this, one side wall of the groove G is formed by the above-described method using two laser beams.
- the wobbling portion 80 can be appropriately formed.
- the coupling section 80 of the group G is appropriately used in the method using the two laser beams. It is difficult to form the Because if the distance between the centers of these beam spots is reduced, the degree of their overlap increases, and it becomes almost the same as one beam spot.
- a red laser with a wavelength of about 65 nm is used.
- a blue laser having a shorter wavelength for example, a wavelength of about 4.5 nm
- the sensitivity of the detector is lower than when a red laser is used, so that there is a high possibility that the detection of the wobbling unit 80 will be inaccurate.
- the amount of light used for detecting the coupling unit 80 is small because the photodetectors are divided into those for detecting magneto-optical signals and those for detecting servo signals. And the detection is likely to be inaccurate. Furthermore, in order to increase the SZN of the magneto-optical signal, it is necessary to reduce the amount of light for the servo and increase the amount of light for detecting the magneto-optical signal. Disclosure of the invention
- An object of the present invention is to provide an optical disc that can eliminate or reduce the above-mentioned problems.
- a plurality of groups and a plurality of lands are provided alternately in the radial direction of the disk, and the plurality of groups have address data recording areas formed by wobbles.
- the plurality of groups have a configuration in which a pair of in-phase coupling portions are formed for each group adjacent in the disk radial direction, and each of the landings includes a pair of the coupling portions.
- a sandwiched portion is provided.
- the address data recording areas provided in the plurality of groups include a first recording area indicating an individual address of each of the groups, and a second recording area indicating an address of another group adjacent to each of the groups.
- There is a recording area, and the plurality of groups are arranged such that a first recording area of one group and a second recording area of another adjacent group face each other with the land interposed therebetween.
- the wobbling units have a configuration in phase.
- the first and second recording areas of the plurality of groups are provided in an array displaced in the disk circumferential direction between groups adjacent in the radial direction of the disk, and the first and second recording areas are arranged between the groups adjacent in the radial direction of the disk.
- the portions where the first and second recording areas face each other are configured not to be adjacent to each other in the disk radial direction.
- the plurality of groups are configured such that the first to third groups are arranged repeatedly in the radial direction of the disk, and have a non-track address area in which recording of data of a strong track address is avoided.
- the first group includes an area indicating a track address of the first group, the non-track address area, and an area indicating a track address of a third group adjacent to the first group.
- the second group has an area indicating a track address of an adjacent first group, an area indicating a track address of the second group, and an area indicating a track address of an adjacent first group.
- the region has a configuration formed in the circumferential direction of the disk in these orders.
- the third group is a configuration in which the non-track address area, the area indicating the track address of the adjacent second group, and the area indicating the track address of the third group are formed in the disk circumferential direction in these order. have.
- an additional coupling portion indicating data different from the track address is formed in each of the non-track address areas.
- the information indicated by the additional wobbling unit is information common to the adjacent probes.
- the additional coupling portion is provided in each of the groups adjacent to each other in the disk radial direction, and the pair of additional coupling portions are opposed to each other across the land and are in phase.
- the recording of the instruction data is performed by a pair of coupling units provided in the same phase on both side walls of each group.
- the instruction data is recorded at the beginning of one frame area including each of the first to third groups.
- the plurality of groups and lands include a plurality of segments separated by at least a plurality of clock mark forming regions provided at regular intervals in a disk circumferential direction on the same track.
- the plurality of segments include an address segment and a plurality of data segments serving as user use areas, and the plurality of address segments have an address data recording area formed by the wobbles.
- a part where the address data recording area is not formed is provided in a part of the plurality of address segments, and this part is configured so that data can be written as a part of a user use area. Have been.
- FIG. 1A is a plan view of a principal part schematically showing an example of a pattern of a recording surface of an optical disc according to the present invention.
- FIG. 1B is a view showing a signal obtained when a beam spot is irradiated on a land of the optical disc. It is explanatory drawing which shows an example.
- FIG. 2 is a main part plan view schematically showing another example of the pattern of the recording surface of the optical disc according to the present invention.
- FIG. 3 is a main part plan view schematically showing another example of the pattern of the recording surface of the optical disc according to the present invention.
- FIG. 4 is a main part plan view schematically showing another example of the recording surface pattern of the optical disc according to the present invention.
- FIG. 5 is a main part plan view schematically showing another example of the pattern of the recording surface of the optical disc according to the present invention.
- FIG. 6A is a main part plan view showing another example of the pattern of the group and the land
- FIG. 6B is an explanatory diagram showing an example of a signal obtained by the pattern shown in FIG. 6A.
- FIG. 7 is a plan view of a main part showing an example of a conventional technique.
- FIG. 8 is an explanatory diagram of the band of the magneto-optical disk.
- FIG. 9 is a diagram showing an arrangement of a plurality of frames.
- FIG. 10 is an explanatory diagram of the push-pulling method. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1A shows a pattern on a recording surface of a magneto-optical disk to which the present invention is applied.
- the magneto-optical disk D of the present embodiment adopts a so-called land group recording method in which a plurality of groups G and lands L arranged in the radial direction (the direction of the arrow Ra) are used as recording tracks. is there.
- a configuration in which only one of the group G and the land L is used as a recording track it is also possible to adopt a configuration in which only one of the group G and the land L is used as a recording track.
- the segments formed on the tracks of Group G include the first to third And a plurality of data segments 11, which are arranged in the circumferential direction of the disk with the fine clock mark 20 forming region interposed therebetween.
- the magneto-optical disk D of the present embodiment is characterized by a structure relating to the first to third address segments 10A to 10C, and the other structure is the same as that of a conventionally known magneto-optical disk. Therefore, the following description focuses on the structure of the first to third address segments 10A to 10C.
- the first to third address segments 1OA to 10C are provided with an address data recording area in a so-called double-ended format.
- coupling portions 31a and 3lb are formed on both side walls of the first address segment 1OA.
- These coupling parts 31a and 31b have the same phase in which the directions of the couplings are aligned in the same manner, and the address data indicated by the coupling parts 31a and 31b are the same.
- This address data is data modulated by an appropriate method.
- the address data includes a frame address, a panda address, and a track address.
- the track address indicated by the wobbling units 31a and 31b is N.
- This track address N is recorded twice in one address segment 1OA.
- the frame address and band address are the same frame and the same band of the track. Since this is common data, reading errors can be reduced.
- the track address is used to avoid false detection. Has been repeated times. This is the same in the other coupling units provided in the first to third address segments 10A to 1OC.
- the coupling portions 33a 'and 33b' are formed on both side walls of the third address segment 10C in the N-th group G. These wobbling sections 33 a ′ and 33 b ′ are also coupled in phase with each other, and the track addresses indicated by these are the previous addresses of the N-th group G in which they are provided ( N— 1).
- the coupling part 3 la, 31 b Shows the original track address of this group G, whereas the wobbling part 33a ', 33b shows the track address of the adjacent group G.
- the second address segment' of the group G ' 10B is an area where no address data is recorded.
- coupling portions 31a ', 31b', 32a, 32b are formed on both side walls of the first and second address segments 10A, 10B.
- the wobbling sections 31a 'and 31b' are wobbled in phase with the wobbling sections 31a and 31b of the N-th group G described above, and the track address indicated by these is N.
- the wobbling sections 32a and 32b are wobbled in phase with each other, and the track address indicated by them is (N + 1).
- the third address segment 10C of the group G is an area where no address data is recorded.
- the wobbling portions 32a, 32b ', 33a, 33b are formed on both side walls of the second and third address segments 10B, IOC.
- the coupling sections 32a 'and 32b are coupled in phase with the coupling sections 32a and 32b, and their track addresses are (N + 1).
- the wobbling sections 33a and 33b are also wobbled in phase with each other, and the track address indicated by them is (N + 2).
- the first address segment 1 OA of the same group G is an area where no address data is recorded.
- the (N + 3) th and subsequent address segments of the group G are basically the Nth,
- the (N + 1) -th and (N + 2) -th groups have the same configuration as the address segments of the group G.
- the (N + 3) -th group G In-phase wobbling portions 31c and 31d indicating that the address data is (N + 3) are formed on both side walls of the first address segment 1OA, and the third address of the group G is formed.
- the address segment indicating the address data is configured to include two in-phase coupling sections, so that the address of any group G is The same effect as described above can be obtained when reading.
- the amount of servo light should be increased too much in the optical detection system of the magneto-optical disk drive. Eliminates the need. Therefore, it is possible to increase the amount of light for detecting a magneto-optical signal for reading data from the data segment 11 and to increase the S / N of the magneto-optical signal. Further, as described above, when a blue laser is used instead of a red laser as the laser beam used for reading and writing data, the sensitivity of the photodetector tends to decrease. Since the magneto-optical disk D of this type can enhance the detection sensitivity of address data, it will be suitable for the next-generation magneto-optical disk device using a blue laser.
- this magneto-optical disk D it is necessary to provide two coupling parts on both side walls of one address segment, but since these two coupling parts have the same phase, a method using one laser beam is used. Can be formed. Therefore, it is suitable for increasing the data recording density by minimizing the track pitch.
- the address data for each land L can also be appropriately read as described below.
- the two address segments 1 OA and 10B shown in FIG. 2 correspond to the first and second address segments 1 OA in the (N + 1) -th and (N + 2) -th groups G shown in FIG. 1A. , 10 B.
- the first address segment 1 OA in the (N + 2) -th group G shown in FIG. 1A has no wobbling portion, the address segment of the present embodiment corresponding to this is not provided.
- the two wobbling sections 3 la and 31 b ′ of the first address segment 1 OA in the (N + 1) -th group G include a coupling section 310 a, which indicates each data of a preamble, a sync, a frame address, and a band address. 310b is included. Further, the coupling sections 31a and 3lb 'also include coupling sections 311a and 31lb indicating the preamble and resync again. The other parts of the coupling sections 31a 'and 31b' indicate the track address and CRC data for performing a data error check.
- the coupling sections 310a 'and 31 Ob' indicate data having the same contents as the coupling sections 310a and 310b, and have the same phase as the coupling sections 310a and 310b.
- the wobbling sections 31 la ′ and 3 lib ′ indicate data having the same contents as those of the hopping sections 311 a and 311 b, and have the same phase as those of the wobbling sections 311 a and 311 b.
- data such as a preamble is also added to the first address segment 1 OA (1 OA ′) in the (N + 2) -th group G.
- address segments other than track addresses and CRCs are used for address segments for which it is not necessary to record track addresses.
- a configuration in which data is recorded may be used.
- there are some second and third address segments 1 OB and 10 C which are not provided with a coupling section. Needless to say, a coupling section indicating common data other than the track address and the CRC may be provided.
- the first and second address segments 1OA and 10B are provided as the address segments of the group G.
- a segment corresponding to the third address segment 10C of the embodiment shown in FIG. 1A is not provided.
- the first address segment 1 OA is divided into a leftward area s1 and a rightward area s2 in the figure, and both or one of these two areas sl and s2 has N, (N + 1). , (N + 2), or (N + 3), an address data coupling section 30 including a track address is appropriately provided.
- the second address segment 10B only the left-side area s3 in the figure is an area indicating address data, and a wobbling unit 30 is appropriately provided.
- each coupling section 30 does not repeat the same track address twice but only once, and in this point also has a configuration different from the embodiment shown in FIG. 1A. .
- the same track address is not repeated twice on one track, and the address segments are the first and second. Since only the address segments 1 OA and 10 B are used and the total number is reduced, the address data area is reduced. Therefore, the user data area can be expanded.
- the area s4 on the right side of the second address segment 10B can be used as a magnetic recording data area, like the data segment 11. Therefore, it is suitable for increasing the format efficiency and increasing the data storage capacity.
- a wobbling portion is provided in a rightward area s2 of a first address segment 1OA indicated by reference numeral n1 and a leftward area s3 of a second address segment 1OB indicated by reference numeral n2.
- the structure is not formed.
- a preamble or a wobbling portion indicating other data can be formed in such a portion, similarly to the content described with reference to FIG. More specifically, as shown in FIG. 4, for example, address segments 1OA and 10B indicated by reference numerals ⁇ 'and ⁇ 2' are provided with a wobbling unit 300a 'and 30 Ob 'is formed.
- the wobbling unit 30 Oa ′ has the same phase as that of the wobbling unit 300 a indicating the data of the preamble resync again included in the coupling unit 30 of the adjacent address segment 10 A indicated by the reference numeral n 3. Also, the wobbling unit 300b 'is in phase with the coupling unit 300b indicating the data of the preamble, the sync, the frame address, and the pand address included in the wobbling unit 30 of the adjacent address segment 10B indicated by reference numeral n4. is there. Even in such a configuration, as in the case shown in FIG. 2, it is easy to recognize the head of the frame when reading data.
- the coupling area 30 is constant in the rightward area s6 of the first address segment 10A and the leftward and rightward areas s7 and s8 of the second address segment 10B. It is formed in an array. These opposing sections 30 are opposite to each other in the same phase as in the previous embodiment.
- a plan view pattern as shown in FIG. 6A is formed in the leftward area s5 (leading area) of the first address segment 10A. According to the pattern shown in the figure, the beam spot passes through the N, (N + 1) and (N + 2) th lands L (N), L (N + 1), and L (N + 2) By doing The obtained push-pull signal has waveforms as shown in (a) to (c) of FIG. 6B.
- the amplitude of the push-pull signal is larger in the portion that is in-phase wobble than in the other portions.
- the land L (N) has (1, The signal of (0), the signal of (0, 1) is obtained in the land L (N + 1), and the signal of (0, 0) is obtained in the land (N + 2).
- three types of lands L (N), L (N + 1), and L (N + 2) can be distinguished. Therefore, from this data, it is possible to determine which of the track addresses read on the land L should be used.
- the present invention is not limited to the contents of the above-described embodiment.
- the specific configuration of each part of the optical disc according to the present invention can be freely changed in various ways.
- the specific number of address segments provided in one track or frame is not limited to two or three.
- this one address segment has a coupling portion indicating a plurality of types of track addresses such as N, (N + 1), or (N + 2). It may be formed so as to be arranged in the circumferential direction of the disc.
- the optical disk according to the present invention is not limited to a magneto-optical disk as understood from the definition at the beginning.
- the present invention can be applied to various optical discs as long as the address data is recorded using a pebble.
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- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003227196A AU2003227196A1 (en) | 2002-12-24 | 2003-03-24 | Optical disc |
JP2004562855A JPWO2004059633A1 (ja) | 2002-12-24 | 2003-03-24 | 光ディスク |
TW092106817A TWI244648B (en) | 2002-12-24 | 2003-03-26 | Optical disk |
US11/044,977 US7564773B2 (en) | 2002-12-24 | 2005-01-27 | Optical disk including address data recording region formed with paired wobbling sections of identical phase |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002371760 | 2002-12-24 | ||
JP2002-371760 | 2002-12-24 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/044,977 Continuation US7564773B2 (en) | 2002-12-24 | 2005-01-27 | Optical disk including address data recording region formed with paired wobbling sections of identical phase |
Publications (1)
Publication Number | Publication Date |
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WO2004059633A1 true WO2004059633A1 (ja) | 2004-07-15 |
Family
ID=32677208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2003/003555 WO2004059633A1 (ja) | 2002-12-24 | 2003-03-24 | 光ディスク |
Country Status (6)
Country | Link |
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JP (1) | JPWO2004059633A1 (ja) |
KR (1) | KR100729330B1 (ja) |
CN (1) | CN100378834C (ja) |
AU (1) | AU2003227196A1 (ja) |
TW (1) | TWI244648B (ja) |
WO (1) | WO2004059633A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100416663C (zh) * | 2004-11-09 | 2008-09-03 | 松下电器产业株式会社 | 光盘记录重放装置 |
WO2014049710A1 (ja) * | 2012-09-26 | 2014-04-03 | パイオニア株式会社 | 記録媒体、記録再生装置及び方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6387655A (ja) * | 1986-09-30 | 1988-04-18 | Sony Corp | 符号変調方法 |
JPH05314538A (ja) * | 1992-05-12 | 1993-11-26 | Sharp Corp | 光ディスクおよびその製造方法 |
JPH06333240A (ja) * | 1993-02-26 | 1994-12-02 | Matsushita Electric Ind Co Ltd | 光学的情報記録部材および記録再生装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2565196B2 (ja) * | 1986-09-30 | 1996-12-18 | ソニー株式会社 | 記録装置及び記録方法 |
KR100677087B1 (ko) * | 1999-11-03 | 2007-02-05 | 삼성전자주식회사 | 워블 신호를 이용한 pid 어드레싱 방법과 그 검출방법, 워블 어드레스 엔코딩 회로와 그 검출 회로 및 기록매체 |
-
2003
- 2003-03-24 KR KR1020057002988A patent/KR100729330B1/ko not_active IP Right Cessation
- 2003-03-24 CN CNB038238691A patent/CN100378834C/zh not_active Expired - Fee Related
- 2003-03-24 WO PCT/JP2003/003555 patent/WO2004059633A1/ja active Application Filing
- 2003-03-24 JP JP2004562855A patent/JPWO2004059633A1/ja active Pending
- 2003-03-24 AU AU2003227196A patent/AU2003227196A1/en not_active Abandoned
- 2003-03-26 TW TW092106817A patent/TWI244648B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6387655A (ja) * | 1986-09-30 | 1988-04-18 | Sony Corp | 符号変調方法 |
JPH05314538A (ja) * | 1992-05-12 | 1993-11-26 | Sharp Corp | 光ディスクおよびその製造方法 |
JPH06333240A (ja) * | 1993-02-26 | 1994-12-02 | Matsushita Electric Ind Co Ltd | 光学的情報記録部材および記録再生装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100416663C (zh) * | 2004-11-09 | 2008-09-03 | 松下电器产业株式会社 | 光盘记录重放装置 |
WO2014049710A1 (ja) * | 2012-09-26 | 2014-04-03 | パイオニア株式会社 | 記録媒体、記録再生装置及び方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1689089A (zh) | 2005-10-26 |
TW200411646A (en) | 2004-07-01 |
JPWO2004059633A1 (ja) | 2006-04-27 |
AU2003227196A1 (en) | 2004-07-22 |
TWI244648B (en) | 2005-12-01 |
KR20050083651A (ko) | 2005-08-26 |
CN100378834C (zh) | 2008-04-02 |
KR100729330B1 (ko) | 2007-06-15 |
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