KR100626962B1 - Dvd 호환 홀로그래픽 롬 시스템에서 디스크 종류 판별방법 - Google Patents
Dvd 호환 홀로그래픽 롬 시스템에서 디스크 종류 판별방법 Download PDFInfo
- Publication number
- KR100626962B1 KR100626962B1 KR1020040106380A KR20040106380A KR100626962B1 KR 100626962 B1 KR100626962 B1 KR 100626962B1 KR 1020040106380 A KR1020040106380 A KR 1020040106380A KR 20040106380 A KR20040106380 A KR 20040106380A KR 100626962 B1 KR100626962 B1 KR 100626962B1
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- KR
- South Korea
- Prior art keywords
- disc
- dvd
- error signal
- focusing
- holographic
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012850 discrimination method Methods 0.000 claims 2
- 238000007689 inspection Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 description 5
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
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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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
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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
- G11B7/08—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
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2504—Holographic discs; Holographic digital data storage [HDDS]
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims (5)
- DVD 호환 홀로그래픽 롬 시스템에서 디스크 종류를 판별하는 방법에 있어서,(a)로더내 디스크 장착 시 해당 디스크를 DVD 디스크 속도로 구동시키면서 포커싱 서보 동작을 수행하는 단계와,(b)상기 포커싱 서보 동작에 따른 포커싱 에러 신호가 정상적으로 출력되는지 여부를 검사하는 단계와,(c)상기 포커싱 에러 신호가 정상적으로 출력되는 경우 상기 포커싱 에러신호를 이용하여 포커스를 잡은 후 DVD 트래킹 서보 동작을 수행하는 단계와,(d)상기 DVD 트래킹 서보 동작에 따른 트래킹 에러 신호가 정상적으로 출력되는지 여부를 검사하는 단계와,(e)상기 트래킹 에러 신호가 정상적으로 출력되는 경우 디스크를 DVD 디스크로 판별하고 트래킹 서보를 통하여 DVD 디스크의 데이터를 재생시키는 단계와,(f)상기 트래킹 에러 신호가 정상적으로 출력되지 않는 경우 녹색 레이저를 소정 각도로 디스크에 입사시키고, 홀로그래픽 디스크 속도로 구동시키는 단계와,(g)상기 홀로그래픽 디스크 속도로 구동되는 디스크에 대해 트래킹 서보를 수행하고 트래킹 서보 에러 신호가 정상적으로 출력되는지 여부를 검사하는 단계와,(h)상기 트래킹 서보 에러 신호가 정상적으로 출력되는 경우 디스크를 홀로그래픽 디스크로 판별하고 트래킹 서보를 통해 홀로그래픽 디스크의 데이터를 재생시키는 단계를 포함하는 DVD 호환 홀로그래픽 롬 시스템에서 디스크 종류 판별방법.
- 제1항에 있어서,상기 (b)단계에서, 상기 포커싱 에러 신호가 정상적으로 출력되지 않는 경우 (i)로더내 디스크가 장착되지 않은 것으로 인식하여 디스크 없음을 경고하는 단계를 더 포함하는 것을 특징으로 하는 DVD 호환 홀로그래픽 롬 시스템에서 디스크 종류 판별방법.
- 제1항에 있어서,상기 (a)단계에서, 상기 장착된 디스크의 포커싱 서보 동작 시 디스크면으로 적색 레이저를 입사시키는 것을 특징으로 하는 DVD 호환 홀로그래픽 롬 시스템에서 디스크 종류 판별방법.
- 삭제
- 제1항에 있어서,상기 (g)단계에서, 상기 홀로그래픽 디스크에 대한 트래킹 서보 제어는 3홀 초점 검사 방식을 통해 수행되는 것을 특징으로 하는 DVD 호환 홀로그래픽 롬 시스템에서 디스크 종류 판별방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040106380A KR100626962B1 (ko) | 2004-12-15 | 2004-12-15 | Dvd 호환 홀로그래픽 롬 시스템에서 디스크 종류 판별방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040106380A KR100626962B1 (ko) | 2004-12-15 | 2004-12-15 | Dvd 호환 홀로그래픽 롬 시스템에서 디스크 종류 판별방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20060067569A KR20060067569A (ko) | 2006-06-20 |
KR100626962B1 true KR100626962B1 (ko) | 2006-09-21 |
Family
ID=37162121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020040106380A Expired - Fee Related KR100626962B1 (ko) | 2004-12-15 | 2004-12-15 | Dvd 호환 홀로그래픽 롬 시스템에서 디스크 종류 판별방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100626962B1 (ko) |
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2004
- 2004-12-15 KR KR1020040106380A patent/KR100626962B1/ko not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR20060067569A (ko) | 2006-06-20 |
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