WO1999010883A1 - Support d'enregistrement et procede de fabrication associe - Google Patents

Support d'enregistrement et procede de fabrication associe Download PDF

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Publication number
WO1999010883A1
WO1999010883A1 PCT/JP1997/003829 JP9703829W WO9910883A1 WO 1999010883 A1 WO1999010883 A1 WO 1999010883A1 JP 9703829 W JP9703829 W JP 9703829W WO 9910883 A1 WO9910883 A1 WO 9910883A1
Authority
WO
WIPO (PCT)
Prior art keywords
recording medium
recording
opening
music
center hole
Prior art date
Application number
PCT/JP1997/003829
Other languages
English (en)
Japanese (ja)
Inventor
Tetsuya Oguchi
Original Assignee
Tetsuya Oguchi
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 Tetsuya Oguchi filed Critical Tetsuya Oguchi
Priority to AU47228/97A priority Critical patent/AU4722897A/en
Publication of WO1999010883A1 publication Critical patent/WO1999010883A1/fr

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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Definitions

  • the present invention relates to a recording medium and a method of manufacturing the recording medium, and more specifically, a CD, DVD, LD, and CD for recording various data programs such as music, video, and mathematical formulas.
  • the present invention relates to an optical recording medium such as a ROM and a method for manufacturing the recording medium.
  • optical recording media such as CDs, DVDs, LDs, and CD-ROMs for recording various data and programs such as music, video, and mathematical formulas are donuts having a central hole. And has a recording area between a non-recording area inside around the center hole and a non-recording area outside around the edge.
  • the present inventor has conducted intensive studies to solve the above-mentioned problems, and as a result, reducing the consumption of the servo current leads to the improvement of the quality. To reduce the servo current, it is most effective to reduce the vibration of the motor. Was found. In addition, the present inventor further contributes to quality improvement by increasing the center hole of the recording medium by about 0.1 to 0.8 mm, preferably about 0.2 to 0.5 mm from the standard. I also found out.
  • the contact area is reduced, and the vibration transmitted through the clamp is reduced. For example, it has been found that it is possible to remove, for example, distortion of sound that occurs at the time of reading or writing without applying any special means to the data reading or writing device.
  • a recording medium in which an opening is formed in an inner non-recording area around a center hole and an opening is also formed in an outer non-recording area.
  • a recording medium in which an opening is formed and the center hole is formed to be 0.1 to 0.8 mm larger than the standard.
  • a recording medium obtained by using any one of the first to sixth recording media as a master and copying the master obtained by using any one of the first to sixth recording media as a master and copying the master.
  • a method for producing a recording medium which is produced by forming an opening in a recording medium having a central hole.
  • a tenth aspect is a method for manufacturing a recording medium, wherein a recording medium obtained by forming an opening or a recess in a recording medium having a center hole is used as a master, and the master is copied to manufacture the recording medium.
  • the opening is not limited to a circular shape, but includes any shape such as an elliptical shape and a bow shape, and the number thereof may be one or more.
  • the recess may be a recess formed on the general surface, and includes a continuous or discontinuous groove.
  • the recording medium that is the object of the present invention is not limited to music CDs and MDs, but includes video CDs, DVDs, LDs, CD-Rs that store or intend to store various data programs such as audio, video, and mathematical formulas. Any object related to an optical recording medium such as CD_R ⁇ M is applicable.
  • analog records such as LPs and SPs, analog recording / reproducing devices such as record players, and turntable stabilizers such as reading / writing optical recording media such as CDs and LDs.
  • analog records such as LPs and SPs
  • analog recording / reproducing devices such as record players
  • turntable stabilizers such as reading / writing optical recording media
  • CDs and LDs optical recording media
  • the opening or the concave portion is circular, the diameter thereof is 0.5 mm or more for a medium having a diameter of 12 cm, preferably 1.0 to 4.0.
  • the opening or the concave portion is newly formed for each recording medium on which various data programs such as music are already recorded. You can also.
  • a single or double or more aperture / recess is formed concentrically in a non-recording area inside or outside the center hole.
  • the recess may be formed by shifting the position with respect to the radiation from the center hole to the outer edge.
  • one or more holes / recesses formed in the non-recording area inside the recording medium exist on the radiation from the center to the outer edge.
  • the sound quality and image quality can be improved by improving the data reading or writing accuracy of the recording medium. It can be of high quality.
  • a sound quality, an image quality, etc. can be made high quality, without providing a means for quality improvement in the data reading or writing apparatus side.
  • FIG. 1 is a perspective view of Embodiment 1 of a music recording medium according to the present invention
  • FIG. 2 is a perspective view and a longitudinal sectional view of a main part of the music recording medium shown in FIG. A shows a perspective view of the main part
  • FIG. 2B shows a longitudinal sectional view of the main part.
  • FIG. 3 is a perspective view and a longitudinal sectional view of a main part of a second embodiment of a music recording medium according to the present invention. Specifically, FIG. 3A is a perspective view of the main part, and FIG. The longitudinal section of the main part is shown.
  • FIG. 4 is a perspective view and a longitudinal sectional view of a main part of a third embodiment of the music recording medium according to the present invention. Specifically, FIG. 4A is a perspective view of the main part, and FIG. The longitudinal section of the main part is shown.
  • the recording medium of the first embodiment is a music CD having a diameter of 12 cm, and has a center hole 1 having a diameter of 15.4 mm, which is 0.4 mm larger than 15 which is a standard of CD.
  • an inner silence area 2 having a width of 20 mm is formed as an inner non-recording area.
  • an outer silence area 3 having a width of 8 mm from the edge is formed as an outer silence area.
  • first holes 4 with a diameter of 2.5 mm are formed concentrically at 9 thighs at equal intervals, and 18 second 3.5 holes with a diameter of 3.5 are formed.
  • Opening 5 has a diameter of 13 mra And are formed at regular intervals at positions shifted from the position of the first opening 4. That is, in the inner silent region 2, the second openings 5 are formed so as to be located between the adjacent first openings 4 with the opening positions shifted, and the openings are formed in a double manner. A heavily formed aperture will always be present on the radiation going from the center to the outer edge.
  • a recording area 6 which is a recording area for recording music, is formed.
  • the outer silence area 3 is formed.
  • third holes 7 having a diameter of 3.5 mm are formed concentrically with a diameter of 54 mm at regular intervals.
  • Each hole to be formed in the above-mentioned recording medium is newly formed not only when creating a recording medium but also for a recording medium in which music, video, various data, programs, etc. are already recorded. You can also.
  • the diameter of the opening formed in the outer non-recording area may be smaller than the diameter of 3.5 holes corresponding to the width of the non-recording area.
  • the recording medium of Example 2 was the same as the recording medium of Example 1 except that the recording medium of Example 2 corresponded to each opening of the recording medium of Example 1 and formed a concave portion having a spherical bottom, and had a diameter of 12 cm. It has a center hole 1 with a diameter of 15.4 mra, which is 0.4 mm larger than the standard 15 for CDs.
  • an inner silence area 2 having a width of 20 mm is formed as an inner non-recording area.
  • a concave portion is formed, and a spherical-bottom second concave portion is formed at a position where the second opening 5 is formed.
  • an outer silent region 3 having a width of 8 thighs from the edge is formed as an outer silent region.
  • the third concave portion 27 having a spherical bottom portion of Example 2 formed in the outer silent region 3 has a spherical bottom portion having a diameter of 3.5 mm and a center depth of 0.6 mm. It is formed in a concentric shape with a diameter of 54 mm at regular intervals, like the third opening 7 of the first embodiment.
  • Each recess formed in the recording medium described above can be formed not only when a recording medium is created, but also newly formed on a recording medium on which music, video data, programs, etc. are already recorded. it can.
  • the recording medium of Example 3 was the same as the recording medium of Example 1 except that it corresponded to each opening of the recording medium of Example 1 and formed a short cylindrical concave portion, and had a diameter of 12 cm. It has a center hole 1 with a diameter of 15.4 mm, which is 0.4 mm larger than the standard for CDs, 15 mm.
  • an inner silence area 2 having a width of 20 cm is formed as an inner non-recording area.
  • a short columnar first area 4 is formed at the location where the first aperture 4 is formed.
  • a concave portion is formed, and a short cylindrical second concave portion is formed at a position where the second opening 5 is formed.
  • an outer silence area 3 having a width of 8 mm from the edge is formed as an outer silence area on the edge of the recording medium.
  • the short cylindrical third concave portion 37 of the third embodiment formed in the outer silent region 3 has a short cylindrical shape having a diameter of 3.5 mm and a depth of 0.6 mm.
  • the holes are formed in a concentric shape having a diameter of 54 mm at regular intervals.
  • Each recess formed in the above recording medium should be newly formed not only when creating the recording medium but also as a recording medium in which music, video, various data, programs, etc. are already recorded. Can also.
  • the recording medium of Example 4 was manufactured by using the recording medium on which the music obtained in Example 1 was recorded as a master and copying the recording medium to a new CD-ROM based on the master.
  • the sound quality was tested by listening to a CD with a comparative product under the same conditions by eight testers.
  • the music recorded on the CD for music used in this test was of a pop style with female vocals.
  • the sound quality was tested by having six testers watch the CDs under the same conditions.
  • the music recorded on the CD for music used in this test was of a pop style with female vocals.
  • the first track, the second track of the present invention, and the third track of the same track of the same track were viewed and listened to in the same manner with the playback device and the volume, etc. I asked them to judge the impressions of the first, second, and third songs with “ ⁇ ” and “X” and write their impressions.
  • Example 4 The opening used in manufacturing the music CD (product of the present invention) obtained in Example 4 above and the recording medium of Example 1 which is a master of the recording medium obtained in Example 4 was used.
  • the sound quality was tested by having seven testers view the same music CD (comparison product) that they did not have under the same conditions.
  • the music recorded on the CD for music used in this test was of a pop style with female vocals.
  • the first track, the second track of the present invention, and the third track of the same track of the same track were viewed in the same manner with the playback device and the volume, etc. We asked them to judge the impressions of the second and third songs with “ ⁇ ” and “X” and write their impressions.

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

L'invention concerne un support d'enregistrement conçu pour améliorer la qualité du son ou des images enregistrés sur des supports d'enregistrement optiques, notamment des disques audionumériques, des vidéodisques numériques, des disques LD et CD-ROM, utilisés pour enregistrer diverses sortes de données et de programmes, comme de la musique, des images et des formules numériques. Comme on peut le voir sur la figure, ce support d'enregistrement est doté d'un double agencement de premiers et seconds trous (4, 5), situé dans une zone de silence intérieure (2) constituant une zone intérieure de non-enregistrement autour d'un trou central (1), ainsi que de troisièmes trous (7) disposés dans une zone de silence extérieure (3) constituant une zone extérieure de non-enregistrement.
PCT/JP1997/003829 1997-08-22 1997-10-23 Support d'enregistrement et procede de fabrication associe WO1999010883A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU47228/97A AU4722897A (en) 1997-08-22 1997-10-23 Recording medium and method of manufacturing recording media

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9/240286 1997-08-22
JP24028697 1997-08-22

Publications (1)

Publication Number Publication Date
WO1999010883A1 true WO1999010883A1 (fr) 1999-03-04

Family

ID=17057231

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/003829 WO1999010883A1 (fr) 1997-08-22 1997-10-23 Support d'enregistrement et procede de fabrication associe

Country Status (2)

Country Link
AU (1) AU4722897A (fr)
WO (1) WO1999010883A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63129273U (fr) * 1987-02-12 1988-08-24
JPH03263631A (ja) * 1990-02-22 1991-11-25 Sony Corp 光ディスク用ガラス基板
JPH05189806A (ja) * 1992-01-13 1993-07-30 Ricoh Co Ltd 光情報記録媒体
JPH0687142A (ja) * 1992-09-07 1994-03-29 Hitachi Ltd 光ディスク基板とその射出成形装置および射出成形方法
JPH06325407A (ja) * 1993-05-18 1994-11-25 Mitsubishi Plastics Ind Ltd 光ディスク

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63129273U (fr) * 1987-02-12 1988-08-24
JPH03263631A (ja) * 1990-02-22 1991-11-25 Sony Corp 光ディスク用ガラス基板
JPH05189806A (ja) * 1992-01-13 1993-07-30 Ricoh Co Ltd 光情報記録媒体
JPH0687142A (ja) * 1992-09-07 1994-03-29 Hitachi Ltd 光ディスク基板とその射出成形装置および射出成形方法
JPH06325407A (ja) * 1993-05-18 1994-11-25 Mitsubishi Plastics Ind Ltd 光ディスク

Also Published As

Publication number Publication date
AU4722897A (en) 1999-03-16

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