KR960035465A - Optical pickup with dual focusing - Google Patents

Optical pickup with dual focusing Download PDF

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Publication number
KR960035465A
KR960035465A KR1019950004410A KR19950004410A KR960035465A KR 960035465 A KR960035465 A KR 960035465A KR 1019950004410 A KR1019950004410 A KR 1019950004410A KR 19950004410 A KR19950004410 A KR 19950004410A KR 960035465 A KR960035465 A KR 960035465A
Authority
KR
South Korea
Prior art keywords
disc
adjusting means
light
optical
optical pickup
Prior art date
Application number
KR1019950004410A
Other languages
Korean (ko)
Other versions
KR0154200B1 (en
Inventor
김진용
김대영
Original Assignee
구자홍
Lg 전자주식회사
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 구자홍, Lg 전자주식회사 filed Critical 구자홍
Priority to KR1019950004410A priority Critical patent/KR0154200B1/en
Priority to KR1019950039516A priority patent/KR0176854B1/en
Priority to TW084112748A priority patent/TW290686B/zh
Priority to CA002164384A priority patent/CA2164384C/en
Priority to US08/567,041 priority patent/US6026065A/en
Priority to EP95402740A priority patent/EP0731457B1/en
Priority to DE69520731T priority patent/DE69520731T2/en
Priority to CN95120861A priority patent/CN1096063C/en
Priority to JP7335349A priority patent/JPH08263867A/en
Priority to BR9506104A priority patent/BR9506104A/en
Priority to MX9600031A priority patent/MX9600031A/en
Publication of KR960035465A publication Critical patent/KR960035465A/en
Application granted granted Critical
Publication of KR0154200B1 publication Critical patent/KR0154200B1/en
Priority to US09/224,798 priority patent/US6034935A/en
Priority to US09/333,264 priority patent/US6088317A/en

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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/139—Numerical aperture control means
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD

Abstract

본 발명은 광 픽업장치에 관한 것으로서, 종래 고밀도 디스크와 기존 CD를 동시에 재생할 수 없는 문제점을 해결하기 이해 종래의 광 픽업장치에 디스크 종류에 상응하게 입사된 광량을 조절하는 광량조절수단을 제공함으로써 두께가 서로 상이한 디스크에서도 동시에 데이타를 재생할 수가 있는 것이다.The present invention relates to an optical pick-up apparatus, and to solve the problem that a conventional high-density disc and a conventional CD cannot be played simultaneously. Can play data on different discs at the same time.

Description

이중 포커싱이 가능한 광 픽업장치Optical pickup with dual focusing

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제5도는 본 발명 이중 포커싱이 가능한 광 픽업장치의 구성도, 제6도의 (가)와 (나)는 제5도에 따른 광량조절수단의 각 예시도, 제7도는 광량조절 구동수단에 대한 개략 구성도.5 is a block diagram of an optical pickup apparatus capable of dual focusing according to the present invention, (a) and (b) of FIG. 6 are illustrations of respective light quantity adjusting means according to FIG. 5, and FIG. Diagram.

Claims (2)

광디스크에서 정보를 독출하여 재생하는 광 픽업의 광원에서 발생된 빛을 2종류 이상의 디스크에 정확히 포커싱하기 위해 빛을 차페하여 제1디스크 독취용 빔 및 제2디스크 독취용 빔을 형성하는 광량조절수단과, 상기 포커싱된 빔을 판독하여 디스크의 종류를 판별하여 디스크에 따라 상기 광량조절수단이 구동되도록 하는 디스크 판별수단과, 상기 디스크 판별수단에 의한 디스크 종류에 따라 상기 광량조절수단을 구동하는 광량조절 구동수단을 포함하여 구성된 이중 포커싱이 가능한 광 픽업장치.Light amount adjusting means for shielding the light generated by the light source of the optical pickup that reads and reproduces information from the optical disc to accurately focus on two or more kinds of discs to form a first disc reading beam and a second disc reading beam; A disc discrimination means for determining the type of disc by reading the focused beam to drive the light quantity adjusting means according to the disc, and a light quantity adjusting drive for driving the light quantity adjusting means according to the disc type by the disc discriminating means. Optical focusing device capable of dual focusing comprising means. 제1항에 있어서, 상기 광량조절수단은 원형 조기개 또는 슬라이드형 조기개로 구성된 것을 특징으로 하는 이중 포커싱이 가능한 광 픽업장치.The optical focusing apparatus of claim 1, wherein the light amount adjusting means comprises a circular early dog or a slide early dog. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950004410A 1995-03-04 1995-03-04 A compatible recording and reproducing optical pick up for cd/dvd disc KR0154200B1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
KR1019950004410A KR0154200B1 (en) 1995-03-04 1995-03-04 A compatible recording and reproducing optical pick up for cd/dvd disc
KR1019950039516A KR0176854B1 (en) 1995-03-04 1995-10-31 Recording and reproducing apparatus adaptable disks in various thickness and optical pick-up thereof
TW084112748A TW290686B (en) 1995-03-04 1995-11-30
US08/567,041 US6026065A (en) 1995-03-04 1995-12-04 Optical pick-up apparatus capable of reading data irrespective of disc type
CA002164384A CA2164384C (en) 1995-03-04 1995-12-04 Optical pick-up apparatus capable of reading data irrespective of disc type
DE69520731T DE69520731T2 (en) 1995-03-04 1995-12-05 Optical scanner for reading data from any type of disk
EP95402740A EP0731457B1 (en) 1995-03-04 1995-12-05 Optical pick-up apparatus capable of reading data irrespective of disc type
CN95120861A CN1096063C (en) 1995-03-04 1995-12-18 Optic data reading out equipment far anykind of disc
JP7335349A JPH08263867A (en) 1995-03-04 1995-12-22 Optical pickup device readable irrespective of kind of disk
BR9506104A BR9506104A (en) 1995-03-04 1995-12-27 Optical sensor capable of reading data regardless of the type of disk
MX9600031A MX9600031A (en) 1995-03-04 1996-01-03 Optical pick-up apparatus capable of dual focusing.
US09/224,798 US6034935A (en) 1995-03-04 1998-12-31 Optical pick-up apparatus capable of reading data irrespective of disc type
US09/333,264 US6088317A (en) 1995-03-04 1999-06-15 Optical pick-up apparatus capable of reading data irrespective of disc type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950004410A KR0154200B1 (en) 1995-03-04 1995-03-04 A compatible recording and reproducing optical pick up for cd/dvd disc

Publications (2)

Publication Number Publication Date
KR960035465A true KR960035465A (en) 1996-10-24
KR0154200B1 KR0154200B1 (en) 1998-12-15

Family

ID=19409207

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950004410A KR0154200B1 (en) 1995-03-04 1995-03-04 A compatible recording and reproducing optical pick up for cd/dvd disc

Country Status (2)

Country Link
KR (1) KR0154200B1 (en)
TW (1) TW290686B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100354534B1 (en) * 1998-03-17 2002-12-11 삼성전자 주식회사 Optical pickup for narrow-track optical disk

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW385435B (en) 1996-05-30 2000-03-21 Hitachi Ltd An optical disk discriminating system of optical disk apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100354534B1 (en) * 1998-03-17 2002-12-11 삼성전자 주식회사 Optical pickup for narrow-track optical disk

Also Published As

Publication number Publication date
KR0154200B1 (en) 1998-12-15
TW290686B (en) 1996-11-11

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E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
G170 Publication of correction
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