TWI267075B - Test disk - Google Patents
Test diskInfo
- Publication number
- TWI267075B TWI267075B TW093103303A TW93103303A TWI267075B TW I267075 B TWI267075 B TW I267075B TW 093103303 A TW093103303 A TW 093103303A TW 93103303 A TW93103303 A TW 93103303A TW I267075 B TWI267075 B TW I267075B
- Authority
- TW
- Taiwan
- Prior art keywords
- disk
- adjustment
- recording
- pickup
- disks
- 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2403—Layers; Shape, structure or physical properties thereof
- G11B7/24035—Recording layers
- G11B7/24038—Multiple laminated recording layers
- G11B7/24041—Multiple laminated recording layers with different recording characteristics
-
- 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
- G11B7/24097—Structures for detection, control, recording operation or replay operation; Special shapes or structures for centering or eccentricity prevention; Arrangements for testing, inspecting or evaluating; Containers, cartridges or cassettes
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
A test disk for the adjustment of a pickup capable of interchangeably reproducing different types of disks, which is formed by laminating a plurality of recording layers different in recording density in which each recording layer is provided with a signal recording surface recorded in a fixed form. With this test disk, the change of disks and the adjustment operation after a disk is changed can be omitted in the adjustment of the pickup since a plurality of recording layers different in recording density are laminated in a disk. Moreover, the adjustment of the pickup can be performed precisely since there is no difference in the disk itself and the state the disk being chucked that occur when a disk is changed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003096259A JP2004303351A (en) | 2003-03-31 | 2003-03-31 | Test disk |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200423113A TW200423113A (en) | 2004-11-01 |
TWI267075B true TWI267075B (en) | 2006-11-21 |
Family
ID=33408381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW093103303A TWI267075B (en) | 2003-03-31 | 2004-02-12 | Test disk |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2004303351A (en) |
KR (1) | KR100597911B1 (en) |
CN (1) | CN1266683C (en) |
TW (1) | TWI267075B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008059618A (en) * | 2005-01-07 | 2008-03-13 | Matsushita Electric Ind Co Ltd | Double layer optical disk |
-
2003
- 2003-03-31 JP JP2003096259A patent/JP2004303351A/en active Pending
-
2004
- 2004-02-12 TW TW093103303A patent/TWI267075B/en not_active IP Right Cessation
- 2004-03-12 KR KR1020040016815A patent/KR100597911B1/en not_active IP Right Cessation
- 2004-03-15 CN CNB2004100304126A patent/CN1266683C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2004303351A (en) | 2004-10-28 |
KR100597911B1 (en) | 2006-07-10 |
CN1266683C (en) | 2006-07-26 |
KR20040086179A (en) | 2004-10-08 |
TW200423113A (en) | 2004-11-01 |
CN1538403A (en) | 2004-10-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |