WO2003043010A2 - Optical disc apparatus - Google Patents
Optical disc apparatus Download PDFInfo
- Publication number
- WO2003043010A2 WO2003043010A2 PCT/JP2002/010638 JP0210638W WO03043010A2 WO 2003043010 A2 WO2003043010 A2 WO 2003043010A2 JP 0210638 W JP0210638 W JP 0210638W WO 03043010 A2 WO03043010 A2 WO 03043010A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clamper
- shape
- disk
- plate
- optical disk
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/05—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs not contained within cartridges
- G11B17/053—Indirect insertion, i.e. with external loading means
- G11B17/056—Indirect insertion, i.e. with external loading means with sliding loading means
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/08—Insulation or absorption of undesired vibrations or sounds
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/022—Positioning or locking of single discs
- G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
- G11B17/0284—Positioning or locking of single discs of discs rotating during transducing operation by clampers
- G11B17/0285—Positioning or locking of single discs of discs rotating during transducing operation by clampers mounted on a bridge
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
- G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/148—Reducing friction, adhesion, drag
Definitions
- the present invention relates to an optical disk device such as an optical disk recording device, an optical disk reproducing device, and an optical disk recording and reproducing device, and particularly to an optical disk device that can operate at high speed.
- an optical disk device such as an optical disk recording device, an optical disk reproducing device, and an optical disk recording and reproducing device, and particularly to an optical disk device that can operate at high speed.
- An object of the present invention is to provide an optical disk device having a mechanism for adjusting an air flow generated by rotation of a disk.
- Another object of the present invention is to provide an optical disk device which can suppress the vibration of the disk and thereby prevent the deterioration of the recording signal quality and the reproduction signal quality.
- a plate-shaped member is arranged above a rotating optical disk, facing the disk surface, between a lower surface of the plate-shaped member and the disk surface, and of the plate-shaped member.
- An airflow circulation space is formed between the upper surface and the housing above the upper surface, and the plate-shaped member is provided with an airflow generated on the disk surface as the disk rotates.
- an optical disk device that has a repetitive shape that has a flowing action and is repeated in a direction crossing a disk track.
- the air flow generated by the rotation of the disk is rectified, so that the disk vibration is suppressed even at the time of high-speed recording and reproduction, and the deterioration of the recording signal quality and the reproduction signal quality is prevented.
- the repetitive shape is, for example, a repetitive shape in a plan view shape.
- the repetition shape may further have a repetition shape in an elevational view shape synchronized with the repetition shape in the plan view shape.
- the terms “upper”, “lower”, “flat”, and “elevated” represent positions when the optical disk device is placed horizontally (horizontally).
- the plate-shaped member has an edge extending in a direction intersecting with the disk track on an outflow end side of an air flow generated in the plane of the plate-shaped member due to rotation of the disk.
- a wave shape such as a sine wave shape or a sawtooth shape can be formed in the ⁇ portion.
- the repetitive shape has a wave-like shape formed in the edge, and a wave-like shape in an elevational view, and a wave-front shape connected from the wave-like edge to the plane of the plate-like member.
- the shape may gradually decrease as the distance from the edge increases.
- the repeating shape may be a shape having a plurality of convex or concave ridges formed on the lower surface of the plate-like member along the track direction.
- the plate-shaped member may be formed of a metal flat plate having no rib at an edge crossing the disk track.
- the repetitive shape may end at a position on the inner peripheral side by a predetermined distance from the outer peripheral edge position of the optical disc.
- the optical disc device has a mechanism for rotating and driving the optical disc while sandwiching and supporting the optical disc by a turntable and a clamper, and the plate-like member may constitute a clamper holder for holding the clamper in the mechanism. .
- the clamper holder is formed in a long plate shape, holds the clamper at a central portion in the longitudinal direction, and has both ends in the longitudinal direction of the clamper holder fixedly supported by a structural member and arranged.
- the repetitive shape may be formed on surface portions located on both sides in the longitudinal direction of the clamper holder with the clamper interposed therebetween.
- the optical disk device has a mechanism for rotating the optical disk while sandwiching and supporting the optical disk by a turntable and a clamper.
- the optical disk device is provided on a clamper holder that faces the optical disk and holds the clamper.
- a repetitive shape may be formed that has the effect of rectifying the air flow and that is repeated in the direction intersecting the disk tracks.
- An appropriate space is formed between the left and right side walls of the structural member and the outer case member.
- An optical disc having a mechanism that is fixedly supported and disposed on the left and right side walls, holds a clamper in the center in the longitudinal direction of the clamper holder, and drives the optical disc to rotate while being sandwiched and supported by the evening table and the clamper;
- the air flow generated along with the rotation of the disc around the left and right side wall portions of the structural member around the positions where both ends in the longitudinal direction of the clamper holder are fixedly supported, and the left and right side walls of the device structural member and An opening may be formed to flow through the space formed between the outer case member and the outer case member.
- Notches are formed in the upper edges of the left and right side walls of the structural member, and both ends in the longitudinal direction of the clamper holder are fixedly supported in the notches, and the notches formed above the clamper holder at the fixed support positions.
- the opening can be formed by the remaining space of the notch.
- the notch is formed to be wider than the length of the clamper holder in the short direction at the notch position, and thus each end in the short direction of the clamper holder and each end in the width direction of the notch are formed. The space formed between them may be the opening.
- a notch is formed at the upper edges of the left and right side walls of the structural member, and both ends in the longitudinal direction of the clamper holder are fixedly supported at the notch, and the notch is set at the notch.
- the width of the clamper holder is made wider than the length of the clamper holder in the short direction, and the space formed between each end of the clamper holder in the short direction and each end of the notch in the width direction.
- An opening may be formed.
- the opening may be configured as a hole formed on the left and right side walls of the structural member. Both edges of the pickup entry opening of the disc tray, which extend in the direction intersecting the tangential direction of the disc track, are formed into a wavy, repeating shape with the function of rectifying the airflow generated as the disc rotates. May be.
- a plurality of ridges projecting into the space and extending in the horizontal direction are formed on the inner wall of the side wall of the device structural member facing the space for accommodating the optical disk, the ridges protruding into the space and exhibiting the function of rectifying the air flow generated as the disk rotates. Is also good.
- the plurality of ridges extending in the horizontal direction formed on the inner wall surface of the side wall of the device structural member rectifies the airflow generated by the rotation of the disk, and reduces the airflow during high-speed recording and reproduction.
- FIG. 1 is a perspective view showing a CD-R / RW drive according to an embodiment of the present invention.
- FIG. 2 is a plan view, a front view, and a side view showing a detailed structure of the clamper holder 28 of FIG.
- FIGS. 3A and 3B are cross-sectional views each showing a schematic structure taken along the line C-C of FIG. 1 when recording or reproduction of an optical disk is performed by the CD-RZRW drive of FIG.
- FIG. 4 is a plan view showing an airflow generated on the upper surface side of the optical disc during recording and reproduction in the CD-RZRW drive of FIG.
- FIG. 5 shows another embodiment of the rectifier formed on the clamper holder according to the present invention. , A front view, and a side view.
- FIG. 6 is a plan view, a front view, and a side view showing a clamper holder without a rectifier used for comparison.
- FIG. 7 is a plan view, a front view, and a side view showing a conventional clamper holder.
- FIG. 8 is a plan view, a front view, and a side view showing still another embodiment of a rectifier formed on a clamper holder according to another embodiment of the present invention.
- 9A and 9B are a perspective view and a side view of a rectifier formed on a clamper holder according to still another embodiment of the present invention.
- FIGS. 10A and 10B are a perspective view and a sectional view of a rectifier formed on a clamper holder according to still another embodiment of the present invention.
- FIG. 11 is a perspective view of an opening for air flow distribution formed on the left and right side walls of the frame according to another embodiment of the present invention.
- FIG. 12 is a perspective view of a rectifier formed in a pickup entry opening of a disc tray.
- FIGS. 13A and 13B are a perspective view and a cross-sectional view showing a form of a rectifier formed on the inner wall surface of the left and right side walls of the frame.
- BEST MODE FOR CARRYING OUT THE INVENTION hereinafter, embodiments of the present invention will be described with reference to the drawings.
- Fig. 1 shows a CD-RZRW drive (an optical disc device that can record and play back CD-R and CD_RW discs) capable of high-speed recording and playback, and is stored in frames 10 and 10 that constitute the chassis.
- Disc tray 12 shown.
- the frame 10 is provided with a front panel having an opening for inserting and removing the disc tray 12 on the front surface thereof, a circuit board on the lower surface, and an outer cover on the entire side, upper surface and rear surface. Be attached.
- the disc tray 12 is moved in and out by being driven by a motor in the direction indicated by arrow A.
- An optical disk is placed in the disk tray 1 2 Recesses 14, openings 16 into which the turntable enters, and openings 18 into which the optical pickup enters.
- Notches 24 and 26 are formed in the upper edges of the left and right side walls 20 and 22 of the frame 10.
- a clamper holder 28 is mounted on the bottom of the cutouts 24 and 26.
- the notches 24 and 26 are formed deeper than the thickness of the clamper holder 28.
- the clamper holder 28 is made of a long metal plate (detailed structure is shown in FIG. 2), and both ends in the longitudinal direction are centered in the width direction of the notches 24 and 26 of the frame 10. Each position is fixed with a screw.
- the width 1 ⁇ 1 of the notches 24, 26 is formed sufficiently wider than the length W2 of the clamper holder 28 in the short direction.
- a clamper 30 is rotatably mounted at the center of the clamper holder 28 in the longitudinal and transverse directions. The clamper 30 faces the turntable below it.
- the optical disk is rotated in the direction of arrow B, and an airflow in the same direction as arrow B is generated on the optical disk surface with the rotation.
- the surface of the clamper holder 8 in contact with the air flow gives resistance to the air flow due to the viscosity of the air. If the length of the clamper holder surface along the direction of the air flow changes, the resistance to the air flow changes. Air flows easily in areas with low resistance. In the direction intersecting with the rotation direction of the disk, a region having a low resistance to the air flow and a region having a high resistance to the air flow are repeatedly formed according to the shape. Therefore, it is considered that the turbulent flow is suppressed and a laminar flow according to the surface shape of the clamper holder is easily formed.
- the repetitive shapes 32 and 34 end at the positions where the outer ends are within a predetermined distance D1 (for example, about 10 mm) from the outer peripheral edge position of the optical disc.
- a predetermined distance D1 for example, about 10 mm
- the air flow rectification effect is higher when the repetitive shapes 32 and 34 are terminated inward than when formed to the outer edge of the optical disk.
- FIG. 3A shows a schematic structure of a cross section taken along a line IIIA-IIIA in FIG. 1 when recording or reproducing data on or from an optical disk by a CD-R / RW drive.
- a spindle motor 36 is mounted on the frame 10 so as to be able to move up and down by a motor drive (usually driven also as a trailing motor).
- a turntable 38 is mounted on the top of the rotating shaft 36a of the spindle motor 36.
- the spindle motor 36 rises, and the optical disc 40 (CD-R disc, CD-RW disc, or other CD-standard disc) is discarded by the evening table 38. It is picked up from the tray 12 and sandwiched between the clamper 30. When the spindle motor 36 is driven, the optical disk 40 is rotated, and recording or reproduction is performed by an optical pickup.
- the optical disc 40 CD-R disc, CD-RW disc, or other CD-standard disc
- airflow circulation spaces 42 and 44 are formed above and below the optical disk 40.
- the clamper holder 28 is disposed at an intermediate height of the space 42 above the optical disk 40.
- the circulation space 42 above the optical disc 40 is located at the position of the clamper holder 28, and the circulation space 42 a between the lower surface of the clamper holder 28 and the upper surface of the optical disc 40 and the clamper holder 28.
- a circulation space 42b between the upper surface of the outer cover 46 and the lower surface of the upper plate 46a of the outer cover 46.
- Ribs 20a and 22a are formed at appropriate intervals on the outer surfaces of the frame side walls 20 and 22. However, the ribs substantially exist on the upper portion of the clamper holder 28. What? Spaces 48 and 50 are formed between the frame side walls 20 and 22 and the side plates 46 b and 46 c of the exterior cover 46.
- FIG. 4 shows an air flow generated on the upper surface side of the optical disk 40 during recording and reproduction.
- airflow in the rotation direction is generated on the upper and lower surfaces of the optical disk 40 in accordance with the rotation of the disk.
- the air flow F generated along the disk surface on the upper side of the optical disk 40 is a plane wave-like shape formed at the edge of the clamper holder 28 on the air flow outflow end side. Rectification is performed by the repetitive shapes 32 and 34, and turbulence is suppressed. This suppresses disk vibration during high-speed rotation.
- the airflow G generated outside the upper disk surface of the optical disk 40 is split vertically by the clamper holder 28. Of these, the airflow G1 on the lower surface side of the clamper holder 28 flows in the space surrounded by the frame side walls 20 and 22.
- the air flow G 2 on the upper surface side of the clamper holder 28 is formed by notches 24 and 26 forces, frame side walls 20 and 22, and side plates 4 6 b and 46 c of the outer cover 46. Space between
- FIG. 3B shows a cross section along the line IIB—IIIB of FIG. 3A.
- the openings 51 into the spaces 48, 50 formed by the cutouts 24, 26 are larger than the openings 51a formed by the remaining space above the clamper holder 28, and the clamper holders 28 before and after it. It is configured as a combination of the outer openings 5 lb and 51 c. In this way, the openings 51 to the spaces 48, 50 by the notches 24, 26 are widely secured.
- FIG. 5 shows another embodiment of the rectifier formed on the clamper holder.
- the wavy repetitive shapes 60 and 61 shown in FIG. 2 are formed, and a cut 54 is made at the boundary of each wave, and each divided piece 56 is twisted to give a planar shape.
- a saw-like repetitive shape is formed in the vertical shape.
- the twisted three-dimensional structure is arranged substantially along the disk rotation direction, and constitutes a guide surface for directly rectifying the air flow.
- Table 1 shows Clampahor The measurement results of the disk vibration angle at the time of predetermined high-speed rotation by various shapes of the die are shown.
- the width of the clamper holder (the length in the short direction of the rectangle excluding the central circular bulge) is 42 mm.
- a clamper holder without a rectifier having a repeating shape was also formed.
- FIG. 6 shows a clamper holder of a comparative example.
- the clamper holder 100 has a circular bulge 102 at the center of the short plate 101.
- FIG. 7 shows a conventional clamper holder. Ribs 59 are formed on both edges in the short direction so as to rise in the entire longitudinal direction, and a rectifier having a repetitive shape is not formed.
- Table 2 shows the measurement results of the disk vibration angle at a predetermined high-speed rotation according to the width of the notches 24 and 26 at the upper edges of the left and right side walls 20 and 22 of the frame 10.
- “all available” means that all of the openings 51 (51 a, 51 b, 51 c) are formed in FIG. This means that only the opening 51a above the clamper holder is formed without the openings 51b and 51c out of the openings 51 (the width of the notches 24 and 26 is reduced). When it is formed to the same length as the length of the clamper holder 28 in the width direction).
- the disk vibration angle is increased in the sample of “Remaining space only”. It can be seen that the disk vibration is suppressed by forming the notches 24 and 26 wider.
- FIGS. 8, 9, and 10 show still another embodiment of the rectifier formed on the clamper holder.
- the waves constituting the wavy repetitive shapes 63 and 64 are bent downward to form a repetitive shape in the plane direction and the vertical direction, thereby forming a three-dimensional structure. are doing.
- the same effect as the three-dimensional structure in Fig. 5 is expected.
- the projecting portion in a plan view is a concave portion in a front view
- the projecting portion in a plan view may be a convex portion in a front view.
- FIG. 1 In the OA clamper holder 74, a plurality of ridges (or ridges) 82 are formed along the disk track direction on the lower surfaces of both side surfaces 74a and 74b of the long flat metal plate clamper 76. Repeated shapes 78 and 80 are formed.
- FIG. 108 shows a cross section of FIG. 1 OA along the line XB-XB. A rectification effect by the three-dimensional structure is expected. It would also be possible to form concave or convex stripes on the upper surface of the clamper.
- FIG. 11 shows another form of the air flow opening formed in the left and right side walls of the frame.
- a clamper holder 88 is attached to the upper edges of the right and left side walls 84 and 86 of the frame, and holes 90.91, 92 and 93 are formed in the left and right side walls 84 and 86 at positions on both sides of the mounting location of the clamper holder 88. It was done. Outside the left and right side walls 84 and 86, an exterior cover (Fig. 3A) is arranged with a space that constitutes the airflow circulation space. Part of the air flow generated on the disk surface as the disk rotates enters one of the holes 90, 92, passes through the flow space between the side walls 84, 86 and the outer cover, and the other holes 91, 93. Get out of
- FIG. 12 shows an embodiment of the rectifier formed in the pickup entry opening of the disk tray.
- the two edges 98 and 100 extending in the direction intersecting the tangential direction of the disc track in the recess 97 where the optical disc is placed in the pickup entry opening 96 of the disc tray 94 have a plan view shape. A wavy repetitive shape is formed.
- FIG. 13A and 13B show a form of a rectifier formed on the inner wall surface of the left and right side walls of the frame.
- FIG. 13A is a perspective view
- FIG. 13B is a cross-sectional view taken along line XIIIB-— in FIG. 13A.
- Attach the clamper holder 106 to the upper edge of the left and right side walls 102, 104 of the frame A plurality of horizontal walls extending above the optical disc 111 at positions on both inner sides of the inner wall surfaces of the left and right side walls 102, 104 with the clamper holder 106 mounted therebetween.
- the book is provided with ridges 108.
- the air flow is guided by the three-dimensional structure.
- the present invention is applied to a CD-RZRW drive has been described.
- the present invention can be applied to a DVD drive and other optical disk drives.
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02775347A EP1437741A4 (en) | 2001-10-18 | 2002-10-11 | OPTICAL PLATE DEVICE |
KR1020047005704A KR100639726B1 (ko) | 2001-10-18 | 2002-10-11 | 광디스크 장치 |
US10/826,495 US7346914B2 (en) | 2001-10-18 | 2004-04-16 | Optical disk drive |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001320303A JP3692997B2 (ja) | 2001-10-18 | 2001-10-18 | 光ディスク装置 |
JP2001-320303 | 2001-10-18 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/826,495 Continuation US7346914B2 (en) | 2001-10-18 | 2004-04-16 | Optical disk drive |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003043010A2 true WO2003043010A2 (en) | 2003-05-22 |
WO2003043010A3 WO2003043010A3 (fr) | 2003-12-04 |
Family
ID=19137714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/010638 WO2003043010A2 (en) | 2001-10-18 | 2002-10-11 | Optical disc apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US7346914B2 (ja) |
EP (1) | EP1437741A4 (ja) |
JP (1) | JP3692997B2 (ja) |
KR (1) | KR100639726B1 (ja) |
CN (1) | CN1299297C (ja) |
WO (1) | WO2003043010A2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2411760A (en) * | 2004-03-05 | 2005-09-07 | Accesstek Inc | Optical storage medium with an anti-bumping system |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4604705B2 (ja) * | 2004-12-21 | 2011-01-05 | 船井電機株式会社 | 光ディスク記録装置 |
WO2007032742A1 (en) * | 2005-09-15 | 2007-03-22 | Månbas Alpha Ab | Distributed gas storage |
JP2007265521A (ja) * | 2006-03-28 | 2007-10-11 | Orion Denki Kk | 記録再生装置 |
JP2007280489A (ja) * | 2006-04-05 | 2007-10-25 | Orion Denki Kk | 記録再生装置 |
KR101008537B1 (ko) | 2008-01-11 | 2011-01-14 | 도시바삼성스토리지테크놀러지코리아 주식회사 | 메인 프레임 및 이를 구비한 광디스크 드라이브 |
US20130316254A1 (en) * | 2011-03-08 | 2013-11-28 | Panasonic Corporation | Energy system |
JP2014207034A (ja) * | 2013-04-12 | 2014-10-30 | ソニー株式会社 | ディスクドライブ装置 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001250301A (ja) * | 2000-03-06 | 2001-09-14 | Victor Co Of Japan Ltd | ディスク装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS54154310A (en) * | 1978-05-25 | 1979-12-05 | Fujitsu Ltd | Magnetic disc apparatus |
JPS56169263A (en) * | 1980-05-29 | 1981-12-25 | Fujitsu Ltd | Magnetic disk device |
US4583213A (en) * | 1984-07-06 | 1986-04-15 | Storage Technology Partners Ii | Air shroud for data storage disks |
JP3044499B2 (ja) * | 1991-08-05 | 2000-05-22 | 日本電産株式会社 | ハードディスク装置 |
JP2867911B2 (ja) * | 1994-08-16 | 1999-03-10 | 日本電気株式会社 | 磁気ディスク装置 |
JPH08255316A (ja) * | 1995-03-17 | 1996-10-01 | Sony Corp | 情報記録媒体 |
JPH09161467A (ja) * | 1995-12-08 | 1997-06-20 | Toshiba Corp | ディスク再生装置 |
JP3130298B2 (ja) * | 1998-04-03 | 2001-01-31 | 三星電子株式会社 | 回転体及びディスクプレーヤー用ノイズ減衰装置 |
JP2000260175A (ja) * | 1999-03-09 | 2000-09-22 | Sony Corp | ディスクドライブ装置 |
JP4024997B2 (ja) | 1999-07-30 | 2007-12-19 | 株式会社東芝 | 光ディスク装置 |
JP2001160283A (ja) | 1999-12-01 | 2001-06-12 | Hitachi Ltd | ディスク装置 |
JP3630600B2 (ja) * | 1999-12-13 | 2005-03-16 | 株式会社日立製作所 | ディスク駆動装置 |
JP2001220275A (ja) | 2000-02-14 | 2001-08-14 | Toyo Clean Kagaku Kk | 生ごみからの液肥化原料製造方法及び装置 |
-
2001
- 2001-10-18 JP JP2001320303A patent/JP3692997B2/ja not_active Expired - Fee Related
-
2002
- 2002-10-11 EP EP02775347A patent/EP1437741A4/en not_active Withdrawn
- 2002-10-11 WO PCT/JP2002/010638 patent/WO2003043010A2/ja active Application Filing
- 2002-10-11 CN CNB028204913A patent/CN1299297C/zh not_active Expired - Fee Related
- 2002-10-11 KR KR1020047005704A patent/KR100639726B1/ko not_active IP Right Cessation
-
2004
- 2004-04-16 US US10/826,495 patent/US7346914B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001250301A (ja) * | 2000-03-06 | 2001-09-14 | Victor Co Of Japan Ltd | ディスク装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1437741A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2411760A (en) * | 2004-03-05 | 2005-09-07 | Accesstek Inc | Optical storage medium with an anti-bumping system |
Also Published As
Publication number | Publication date |
---|---|
EP1437741A2 (en) | 2004-07-14 |
CN1572000A (zh) | 2005-01-26 |
JP3692997B2 (ja) | 2005-09-07 |
US20050010939A1 (en) | 2005-01-13 |
WO2003043010A3 (fr) | 2003-12-04 |
KR20040048961A (ko) | 2004-06-10 |
EP1437741A4 (en) | 2009-05-06 |
KR100639726B1 (ko) | 2006-10-31 |
CN1299297C (zh) | 2007-02-07 |
JP2003123455A (ja) | 2003-04-25 |
US7346914B2 (en) | 2008-03-18 |
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