WO2008062628A1 - Procédé pour générer un modèle avec une pseudo-tâche et disque de test optique - Google Patents

Procédé pour générer un modèle avec une pseudo-tâche et disque de test optique Download PDF

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Publication number
WO2008062628A1
WO2008062628A1 PCT/JP2007/070719 JP2007070719W WO2008062628A1 WO 2008062628 A1 WO2008062628 A1 WO 2008062628A1 JP 2007070719 W JP2007070719 W JP 2007070719W WO 2008062628 A1 WO2008062628 A1 WO 2008062628A1
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WIPO (PCT)
Prior art keywords
pattern
dot
inspection
disc
disk
Prior art date
Application number
PCT/JP2007/070719
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English (en)
Japanese (ja)
Inventor
Toshisada Takada
Masahiko Asari
Toshiharu Takahashi
Masahiro Yoshikawa
Takayoshi Miyanaga
Miki Yokoyama
Yoshihiro Shito
Original Assignee
Sony Computer Entertainment Inc.
Almedio Inc.
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 Sony Computer Entertainment Inc., Almedio Inc. filed Critical Sony Computer Entertainment Inc.
Priority to JP2008545339A priority Critical patent/JP5427413B2/ja
Priority to CN2007800425141A priority patent/CN101548325B/zh
Publication of WO2008062628A1 publication Critical patent/WO2008062628A1/fr

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Definitions

  • the present invention relates to a technique for generating a pseudo-change state pattern for inspecting the reproduction performance of a reproduction apparatus with respect to a state in which an optical property generated on a surface portion of an optical disk is changed.
  • An optical disc reproducing apparatus reproduces information by irradiating an optical disc with a light beam and reading a signal of reflected light from the disc.
  • dirt such as fingerprints may adhere to the recording surface of the optical disk.
  • the optical disk playback device uses a test disk that reproduces a fingerprint or the like, and checks the playback capability based on the signal from the test disk.
  • Patent Document 1 describes an inspection in which a real fingerprint is reproduced with a lattice-like dot pattern (dot diameter 75 m, radial pitch 250 m, circumferential pitch 125 m) on a compact disc. It's written on the disc!
  • Patent Document 2 describes an optical storage inspection disc in which a pseudo fingerprint pattern is formed by forming a light-shielding portion and a non-light-shielding portion on the recording surface of an optical disc.
  • a surface portion such as a recording surface or a reading surface of an optical disk may be contaminated with a liquid such as blood or saliva.
  • a liquid such as blood or saliva.
  • the thickness and concentration of the liquid adhering to the surface is constant, and the unevenness can be achieved. If the uneven force S can be achieved, the reflected light from the optical disk may be completely blocked or the reflected light may be obtained to some extent (semi-transmitted).
  • Patent Document 3 and Patent Document 4 describe a semitransparent pattern in a compact disc, in contrast to the case where the reflected light from the optical disc is uneven due to adhesion of liquid or the like on the surface of the disc.
  • (Semi-transparent band) is printed on the reading surface of the optical disc, and the technology to reproduce the state where dirt such as liquid adheres to the reading surface of the optical disc has been developed. It is shown.
  • the translucent pattern is formed by printing translucent ink on the reading surface. The unevenness of reflected light is reproduced by adjusting the translucency of the translucent ink, that is, adjusting the density of the translucent ink.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 11312341
  • Patent Document 2 JP-A-10-241208
  • Patent Document 3 Japanese Patent No. 2892041
  • Patent Document 4 JP-A-2004-13952
  • Blu-ray Disc registered trademark
  • BD Blu-ray Disc
  • the pseudo-fingerprint pattern used in a compact disc can also be applied to a DVD (Digital Versatile Disc, hereinafter abbreviated as DVD).
  • DVD Digital Versatile Disc
  • the total area ratio of the dot printing area to the area of the spot diameter is stable no matter where the DVD spot moves to the printed dots of the grid pattern. For this reason, it is possible to reproduce the actual fingerprint using a lattice pattern.
  • the translucent pattern used in the compact disc can also be applied to a DVD. Even when a translucent pattern is applied to a DVD, the translucency of the translucent pattern can be adjusted by adjusting the density of the translucent ink. Therefore, it is possible to reproduce liquid stains such as blood and saliva by using a translucent pattern formed from translucent ink.
  • the spot diameter is considerably smaller than that of a conventional storage medium (for example, a DVD), which is about a quarter. Therefore, if the DVD print pattern is used as it is to form a pseudo-fingerprint pattern, depending on the position of the laser spot, there will be a part that is not affected by the print dot at all and a part that is not affected by the print dot. Therefore, with the DVD print pattern, the actual fingerprint on the BD can be reproduced well. Absent.
  • the print dot diameter and the lattice spacing are reduced in accordance with the decrease in the spot diameter of the BD.
  • the printing dot diameter is about 16 inches.
  • the force S is a grid-like arrangement, the number of printed dots contained in the spot diameter varies greatly depending on whether the center position of the spot is on the grid or between the grids. Therefore, the ratio of the total area of the printed dots included in the spot diameter to the spot area, that is, the total area ratio is not uniform.
  • the total area ratio changes greatly depending on the position of the movement, so the reflected light from the optical disk or the RF (Radio Frequency) signal obtained from the reflected light fluctuates. To do.
  • the state in which dirt such as blood and saliva adheres to the surface of the optical disk will be examined.
  • the translucent ink that has been used in the past for inspecting dirt adhesion on compact discs and DVDs is also used in BD.
  • the RF signal obtained from the reflected light could not be obtained at all, regardless of the density of the ink and the color of the ink (eg, black, red, etc.).
  • the conventionally used semi-transparent ink does not transmit, and it is not possible to reproduce the case where dirt such as blood or saliva adheres.
  • the present invention provides a technique for generating a pseudo-change state pattern in which printed dots are present in a light spot equivalent to a BD spot, the total area ratio thereof is stable, and the transmittance can be adjusted.
  • the purpose is to provide.
  • an inspection disk used in an optical disk reproducing apparatus that reads a record by projecting a light beam onto the optical disk is used!
  • the surface portion has a portion provided with a pattern for simulating the state of changing the optical properties of the optical disc
  • the pattern is formed by distributing a large number of dot groups
  • the dot group is a
  • the dot is included in the light spot formed on the surface portion.
  • the present invention it is possible to generate a distribution pattern in which printing dots are present in a light spot such as a BD spot and the total area ratio is stable. Based on this distribution pattern, it is possible to generate an inspection disk in which a pseudo change state pattern is generated. The pseudo change state pattern is printed on the surface portion of the printing disk formed in this way.
  • the transmittance of the distribution pattern can be adjusted by changing the density of the printed dots and the shape of the printed dot area. As a result, it can be applied to the optical disk with various transmittances, or to the stains of liquids such as blood and saliva adhering to various areas.
  • FIG. 1 is a plan view showing an example of an inspection disk according to the first embodiment of the present invention.
  • FIG. 2 is a block diagram of an optical disc playback apparatus.
  • FIG. 3 is a distribution pattern in the first embodiment of the present invention.
  • FIG. 4 is an example of a dot image pattern generation system.
  • FIG. 5 is a diagram for explaining a relationship between a BD spot diameter and printing dots according to an embodiment of the present invention.
  • FIG. 6 is a diagram for explaining the relationship between the BD spot diameter and printing dots according to an embodiment of the present invention.
  • FIG. 7 is an RF signal waveform diagram when an actual fingerprint is attached to a BD.
  • FIG. 8 is an RF signal waveform diagram when a pseudo fingerprint pattern is printed on a BD.
  • FIG. 9 is an RF signal waveform diagram when a grid-printed dot pattern for DVD is printed on a BD.
  • FIG. 10 is a distribution pattern in the second embodiment of the present invention.
  • FIG. 11 is a distribution pattern in the second embodiment of the present invention.
  • FIG. 12 is a distribution pattern in the second embodiment of the present invention.
  • FIG. 13 is a distribution pattern in the second embodiment of the present invention.
  • FIG. 14 is a distribution pattern in the second embodiment of the present invention.
  • FIG. 15 is a distribution pattern in the second embodiment of the present invention.
  • FIG. 16 is a plan view showing an example of an inspection disk according to the second embodiment of the present invention.
  • FIG. 17 is an RF signal waveform diagram when actual saliva is adhered to the BD.
  • FIG. 18 is an RF signal waveform diagram when a transmittance adjustment pattern is printed on a BD. Explanation of symbols
  • Output processing unit 110 ⁇ ⁇ ⁇ Input device 120 ⁇ ⁇ ⁇ Display device 130 ⁇ ⁇ ⁇ Print master production device 140 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
  • a pseudo-fingerprint pattern that simulates a fingerprint is used as an example of a pattern for imitating a state of changing the optical properties of an optical disk (pseudo-change state pattern) on the surface portion. explain.
  • FIG. 1 is a plan view showing an example of an inspection disk according to the first embodiment of the present invention.
  • the inspection disk 10 shown in FIG. 1 is formed by laminating a plurality of layers such as a transparent substrate, a reflective layer, a recording layer, and a protective film.
  • This inspection disk 10 has a center hole 12 in the center.
  • a pseudo fingerprint pattern 20a is printed on the surface 11 of the inspection disk 10 by a printing machine.
  • the long side of the pseudo fingerprint pattern 20a is along the circumferential direction. However, printing may be performed in a state where the long side direction becomes longer in the radial direction.
  • the pseudo fingerprint pattern 2 Ob shown in FIG. 1 is an example. In FIG. 1, either one of the forces of coexisting two types of pseudo-fingerprint patterns 20a and 20b in the same disk may be used.
  • the inspection disk 10 is used by being mounted at a predetermined reproduction position of the optical disk reproduction apparatus of FIG.
  • FIG. 2 is a block diagram of the optical disc playback apparatus.
  • the optical disk reproducing device detects signals from the optical pick 30, the spinneret motor 31, the laser diode (LD) drive circuit 32, the actuator control circuit and the spherical aberration circuit 33, and the mounted optical disk. And a signal processing circuit 34.
  • the signal processing circuit 34 outputs an RF signal and a servo error signal.
  • This optical disk playback apparatus normally plays back with an optical disk loaded. At the time of shipment, the inspection disk 10 is attached and the reading performance test for the attached fingerprint is performed.
  • the reflected light from the inspection disk 10 is received by the optical pickup 30.
  • the optical pick-up 30 photoelectrically converts the received reflected light and outputs it as an RF signal that is an electrical signal.
  • the pseudo-fingerprint pattern 20a printed on the surface portion 11 of the inspection disk 10 in FIG. 1 is printed by printing by the printing machine 140 (see FIG. 4).
  • the printing press 140 is provided with a printing master having a distribution pattern 200 for forming a pseudo fingerprint pattern 20a.
  • Figure 3 shows an example.
  • the distribution pattern 200 corresponding to the pseudo fingerprint pattern 20a shown in FIG. 3 is produced by the following procedure.
  • the distribution pattern 200 shown in FIG. 3 draws a preset number of dot images in an area of a preset size assumed on the inspection disk 10, and then the dot pattern is displayed. It is generated by searching for a part where the image is not distributed and by drawing a dot image to make a print dot exist in the BD spot.
  • FIG. 4 shows an example of a dot image pattern generation system used in this embodiment.
  • This system includes a computer main body 100, an input device 110, and a display device 120.
  • a printing master production apparatus 130 is connected to the computer main body 100 via a network.
  • a computer main body 100 shown in FIG. 4 includes a central processing unit (CPU) 101 and a storage device 102.
  • the storage device 102 stores a program executed by the CPU 101.
  • FIG. 4 shows a function that is a specific means by which software related to the present embodiment is constructed in cooperation with hardware, that is, the CPU 101. This function includes a process that draws a predetermined number of dot images in a predetermined area! /, Which is assumed to be on the disc!
  • the data of the generated distribution pattern 200 is sent to a printing master manufacturing apparatus 130 that manufactures a printing master of the printing machine 140 via a network.
  • the printing master manufacturing apparatus 130 manufactures a printing master based on the distribution pattern 200 sent.
  • the produced printing master is attached to the printing machine 140 and used for printing on the optical disk surface.
  • a pseudo fingerprint pattern is printed using the printing master described above. This printed one is a pseudo-fingerprint pattern 20a.
  • the dot drawing processing unit 102a for example, a range of 3 mm in length X 10 mm in width is set as an area of a preset width assumed on the disc.
  • 720 dot images are drawn randomly within the set range.
  • the dot image drawing processing unit 102a has a function of specifying a position at random. Specifically, this is dealt with by specifying the pixel address of the bitmap with a random number.
  • the empty search processing unit 102b randomly searches for an empty portion where no dot image is distributed in 100 m square. If there is an empty part as a search result, the dot image additional drawing processing unit 102c additionally draws a dot image in the empty part. For example, draw about 1000.
  • the empty search processing unit 102b performs empty search. Specifically, check everything within a range of 3 mm in length and 1 Omm in width. 100 If an area with no dot image is detected in all directions, an additional dot image is drawn.
  • the dot image pattern used in the present invention is not limited to this.
  • the dot image can be an ellipse, rectangle, or other non-circular figure.
  • the dot image drawing processing unit 102a for example, a range of 3 mm in length X 10 mm in width is set as an area of a preset size assumed on the disc. Next, 720 elliptical dot images are randomly drawn within the set range. However, no other dot image can exist within 100 mm of one dot image. For this reason, the dot image drawing processing unit 102a has a function of specifying a position at random. Specifically, turbulence This is dealt with by specifying the pixel address of the bitmap by number.
  • the empty search processing unit 102b randomly searches for empty areas in which dot images are not distributed in 100 directions. If there is an empty part as a search result, the dot image additional drawing processing unit 102c additionally draws a circle dot image in the empty part. For example, draw about 1000.
  • the empty search processing unit 102b performs empty search. Specifically, all checks are made within a range of 3 mm in length and 1 Omm in width. 100 If a portion without a circle dot image is detected in all directions, an additional circle dot image is drawn.
  • the area ratio between the portion where dot printing is performed and the portion where dot printing is not performed is about 10%.
  • the printing dots 210a, 210b,..., 21 On constituting the pseudo fingerprint pattern 20a are distributed in a pseudo random state.
  • the number of printing dots expected within the spot diameter does not change greatly regardless of the position where the BD spot SP hits.
  • the total area ratio which is the ratio of the total area of the printed dots included in the spot diameter, is approximately the same regardless of the position of the spot diameter.
  • FIG. 6 the distribution example of the printing dots 210a, 210b,..., 210 ⁇ shown in FIG. 5 and the lattice printed dot pattern 300a, 300b,.
  • the total area ratio is independent of the center position of the spot diameter. It can be kept constant. Therefore, a stable fingerprint detection test can be performed.
  • the RF signal waveform obtained from the reflected light read from the optical disk to which the actual fingerprint is attached by the reproducing apparatus, and the detection disk on which the pseudo fingerprint pattern 20a is printed are similarly shown.
  • the RF signal waveform obtained from the reflected light read by the reproducing apparatus is shown respectively.
  • Fig. 9 shows the RF signal waveform when a DVD print pattern is printed on BD.
  • the RF signal waveform for the pseudo fingerprint pattern shown in FIG. 8 in which the printed dots 20a are distributed is very similar to the RF signal waveform of the actual fingerprint shown in FIG. Therefore, it can be said that the pseudo-fingerprint pattern 20a can reproduce the actual fingerprint.
  • the RF signal waveform when the DVD print pattern is printed on the BD shown in Fig. 9 is very different from the RF signal waveform of the actual fingerprint.
  • the transmittance adjustment pattern in the second embodiment is generated using a random dot pattern as in the case of the pseudo fingerprint pattern.
  • the unevenness of the transmittance of the reflected light due to the contamination of the liquid such as blood or saliva is changed by changing one or both of the density of random dots and the printing dot diameter of random dots. adjust.
  • the dot area (the area where the ink is attached) blocks light.
  • the portion between dots (the portion where no ink is attached) transmits light. Therefore, by changing the density of dots per unit area, the light S can be adjusted by adjusting the transmitted light.
  • FIG. 16 is a plan view showing an embodiment of an inspection disk on which a transmittance adjustment pattern is printed.
  • a transmittance adjustment pattern 4 Oa is printed on the surface 11 of the inspection disk 10 shown in FIG.
  • the long side of the transmittance adjustment pattern 40a in Fig. 16 (a) is along the circumferential direction.
  • the transmittance adjustment pattern 40a may be printed in a state where the long side direction becomes longer in the radial direction as in the case of FIG.
  • One example is the transmittance adjustment pattern 40b shown in Fig. 16 (a).
  • two types of transparent Either of the forces that coexist the excess rate adjustment patterns 40a and 40b may be used.
  • the printing machine 140 is provided with a printing master having a distribution pattern 400 for forming the transmittance adjustment pattern 40a.
  • Figure 10 shows an example.
  • the distribution pattern 400 shown in FIG. 10 is set in advance in a pre-set and wide area assumed on the inspection disk 10 like the pseudo fingerprint pattern! It is generated by having a print dot in the BD spot by drawing the number of dot images, then searching for the part where the dot image is not distributed, and drawing the dot image.
  • the dot drawing processing unit 102a for example, a range of 3 mm in length X 10 mm in width is set as an area of a preset size assumed on the disc. Next, 8000 dot images are drawn randomly within the set range. However, no other dot image can exist within 50 m square of one dot image. For this reason, the dot image drawing processing unit 102a has a function of specifying a position at random. Specifically, this is dealt with by specifying the pixel address of the bitmap with a random number.
  • the dot image additional drawing processing unit 102c additionally draws a dot image in the empty part. For example, 200 to 300 are drawn.
  • the empty search processing unit 102b performs empty search. Specifically, check everything within a range of 3 mm in length and 1 Omm in width. When a part with no dot image is detected in 50 m square, several additional dot images are drawn.
  • the case where a circular dot image is used as the dot image in the transmittance adjustment pattern has been described.
  • the diameter of the circular dot image used for the distribution pattern for forming the transmittance adjustment pattern was 20 m.
  • the dot image pattern to be used is not limited to this, similarly to the pseudo fingerprint pattern.
  • the power of making a dot image an ellipse, rectangle, or other non-circular figure.
  • the force S which is an example of a circular dot image
  • an elliptic dot image and a circular dot image are used.
  • the dot image drawing processing unit 102a for example, a range of 3 mm in length X 10 mm in width is set as an area of a preset size assumed on the disc. Next, 7200 elliptical dot images are randomly drawn within the set range. However, no other dot image can exist within the square 50 111 of one dot image. For this reason, the dot image drawing processing unit 102a has a function of specifying a position at random. Specifically, this is dealt with by specifying the pixel address of the bitmap by random number.
  • the dot image additional drawing processing unit 102c additionally draws a circle dot image in the empty part. For example, 200 to 300 are drawn.
  • the empty search processing unit 102b performs empty search. Specifically, check everything within a range of 3 mm in length and 1 Omm in width. If an area with no circle dot image is detected in 50 m square, several additional circle dot images are drawn.
  • the area ratio between the portion where dot printing is performed and the portion where dot printing is not performed is about 20%.
  • Liquid stains such as blood and saliva adhere to the optical disc with various transmittances, but by changing the dot density of the distribution pattern corresponding to the transmittance adjustment pattern of this embodiment. Can be reproduced. There are also various areas where liquid stains such as blood and saliva are attached. However, it can be reproduced by changing the area having the dots in the distribution pattern.
  • An example of the distribution pattern when the area having the dots of the distribution pattern is changed is shown in Fig. 11 and Fig. 15.
  • the distribution pattern 500 shown in FIG. 11 has regions 500a, 500b,..., 500 ⁇ having a plurality of circular and elliptical dots.
  • Fig. 11 Distribution pattern 500 (Fig. 10) After creating the distribution pattern shown in Fig.
  • the area 500a, 500b, ..., 500 ⁇ with circular and elliptical dots there are various ways to extract a region having circular and elliptical dots, and the extracted regions are divided into a plurality of regions shown in FIG. 11 as shown in the distribution pattern 600 in FIG. 12 and the distribution pattern 700 in FIG. Regions 500a, 500b,..., 500 ⁇ having circular and elliptical dots may be larger.
  • the shape to be extracted is not limited to a circle and an ellipse, and may be extracted in a staircase shape to form staircase distribution patterns 800 and 900 as shown in FIGS.
  • the transmittance adjustment patterns 80a and 90a with the distribution patterns 800 and 900 extracted in a staircase shape are printed on the optical disc with the long side along the circumferential direction as shown in Fig. 16 (c), It is possible to confirm to what extent normal playback can be performed.
  • FIGS. 17 and 18 the RF signal waveform obtained from the reflected light read from the optical disk on which saliva is adhered by the reproducing apparatus, and the same, reproduced from the inspection disk on which the transmittance adjustment pattern 40a is printed.
  • the RF signal waveforms obtained from the reflected light read by the device are shown below.
  • FIG. 17 shows RF signal waveforms from an optical disc to which saliva is attached in three types: mild, moderate, and severe.
  • the part where the saliva is attached in the mild type, the part where the saliva is attached in the medium type, the part where the saliva is attached in the severe type, the force, and the RF signal obtained are shown in the range of A in FIG.
  • the waveform in the range of D in FIG. 18 that is the RF signal waveform from the inspection disk on which the transmittance adjustment pattern 40a is printed is very similar to the waveform in the range of A in FIG.
  • this transmittance adjustment pattern 40a can reproduce the state of the optical disk to which saliva is attached.

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  • Manufacturing Optical Record Carriers (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Technique permettant de générer un modèle d'état de pseudo-modification, un point d'impression étant présent de manière fiable dans un point BD avec un rapport d'aire total stable, la capacité de transfert pouvant être ajustée. Un modèle de répartition en vue d'une impression est généré par des processeurs (102a, 102b, 102c). Le processeur (102a) utilise un ordinateur (100) pour dessiner un certain nombre prédéterminé d'images de points dans une aire ayant une taille prédéfinie présumée sur un disque. Le processeur (102b) recherche une aire où aucune image de point n'est distribuée. Le processeur (102c) ajoute et dessine les images de points dans l'aire détectée où aucune image de point n'est distribuée. Ce modèle de répartition (200) est utilisé pour former une matrice d'impression d'une machine d'impression (140), et un modèle de pseudo-empreinte digitale (20a), qui est un type de modèle d'état de pseudo-modification, est imprimé sur l'aire de surface (11) d'un disque (10), formant de ce fait le disque (10) en vue de l'exécution d'un test.
PCT/JP2007/070719 2006-11-24 2007-10-24 Procédé pour générer un modèle avec une pseudo-tâche et disque de test optique WO2008062628A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008545339A JP5427413B2 (ja) 2006-11-24 2007-10-24 擬似汚れ付着パターン生成方法および光検査用ディスク
CN2007800425141A CN101548325B (zh) 2006-11-24 2007-10-24 附着虚拟污垢图案生成方法以及光检查用盘

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JP2006317577 2006-11-24
JP2006-317577 2006-11-24

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Citations (8)

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JPS62295233A (ja) * 1986-06-16 1987-12-22 Matsushita Electric Ind Co Ltd 光デイスクのテストデイスク
JPH0719813U (ja) * 1993-07-30 1995-04-07 ティアック株式会社 検査用ディスク
JPH10241208A (ja) * 1997-03-03 1998-09-11 Matsushita Electric Ind Co Ltd 光記録検査ディスク
JPH10241210A (ja) * 1997-03-03 1998-09-11 Matsushita Electric Ind Co Ltd 光記録検査ディスク及びその製造方法
JP2892041B2 (ja) * 1989-06-05 1999-05-17 ソニー株式会社 評価用光ディスクおよび光ディスクプレーヤの評価方法
JPH11242833A (ja) * 1998-02-25 1999-09-07 Sony Corp 凹凸パターンの作製方法
JPH11312341A (ja) * 1998-04-28 1999-11-09 Teac Corp 検査用ディスク
JP2004013952A (ja) * 2002-06-04 2004-01-15 Sony Corp テストディスク

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004171711A (ja) * 2002-11-22 2004-06-17 Pioneer Electronic Corp 汚れ検査方法並びに汚れ検査媒体及びその製造方法
EP2040258B1 (fr) * 2006-07-10 2010-09-15 Panasonic Corporation Dispositif de disque optique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62295233A (ja) * 1986-06-16 1987-12-22 Matsushita Electric Ind Co Ltd 光デイスクのテストデイスク
JP2892041B2 (ja) * 1989-06-05 1999-05-17 ソニー株式会社 評価用光ディスクおよび光ディスクプレーヤの評価方法
JPH0719813U (ja) * 1993-07-30 1995-04-07 ティアック株式会社 検査用ディスク
JPH10241208A (ja) * 1997-03-03 1998-09-11 Matsushita Electric Ind Co Ltd 光記録検査ディスク
JPH10241210A (ja) * 1997-03-03 1998-09-11 Matsushita Electric Ind Co Ltd 光記録検査ディスク及びその製造方法
JPH11242833A (ja) * 1998-02-25 1999-09-07 Sony Corp 凹凸パターンの作製方法
JPH11312341A (ja) * 1998-04-28 1999-11-09 Teac Corp 検査用ディスク
JP2004013952A (ja) * 2002-06-04 2004-01-15 Sony Corp テストディスク

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CN101548325B (zh) 2011-05-04
CN101548325A (zh) 2009-09-30
JPWO2008062628A1 (ja) 2010-03-04
JP5427413B2 (ja) 2014-02-26

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