KR950034125A - 피트/글루브 판별 회로 - Google Patents

피트/글루브 판별 회로 Download PDF

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Publication number
KR950034125A
KR950034125A KR1019950005933A KR19950005933A KR950034125A KR 950034125 A KR950034125 A KR 950034125A KR 1019950005933 A KR1019950005933 A KR 1019950005933A KR 19950005933 A KR19950005933 A KR 19950005933A KR 950034125 A KR950034125 A KR 950034125A
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KR
South Korea
Prior art keywords
output signal
pit
circuit
glove
signal
Prior art date
Application number
KR1019950005933A
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English (en)
Other versions
KR0168450B1 (ko
Inventor
신지 구리하라
겐지 나까오
Original Assignee
다까노 야스아끼
상요덴기 가부시끼가이샤
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 다까노 야스아끼, 상요덴기 가부시끼가이샤 filed Critical 다까노 야스아끼
Publication of KR950034125A publication Critical patent/KR950034125A/ko
Application granted granted Critical
Publication of KR0168450B1 publication Critical patent/KR0168450B1/ko

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Classifications

    • 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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
    • G11B11/10563—Access of indexed parts
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10595—Control of operating function
    • G11B11/10597—Adaptations for transducing various formats on the same or different carriers
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

광픽업의 트랙열의 트랙킹중 및 횡단중의 양쪽에서 피트/글루브를 판별하는 회로를 제공한다.
입력 단자(9 및 10)에 인가되는 수광 소자로부터의 출력 신호는 가산 회로(11)에서 가산된 후에 제1 및 제2 트랜지스터(12 및 13)에 인가된다. 제1트랜지스터(12)로부터의 출력 신호는 콘덴서(14)에서 엔벨로프 검파된것으로, 감산 회로(17)에서 제2트랜지스터(13)의 출력 신호와 감산된다. 감산 회로(17)의 출력 신호는 비교회로(18)에서 기준치 Verf와 비교된다. 비교 결과에 따른 비교 회로(18)의 출력 신호는 리트리거 모노멀티(19)에 인가된다. 그리고, 광디스크의 피트/글루브의 판별 결과에 따른 출력 신호가 리트리거 모노멀티(19)로부터 발생한다.

Description

피트/글루브 판별 회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 일실시예를 도시한 회로도.

Claims (2)

  1. 광학식 디스크로부터 판독되는 신호를 가산하는 가산 수단, 상기 가산 수단의 출력 신호를 엔벨로프 검파하는 엔벨로프 검파 수단, 상기 가산 수단의 출력 신호와 엔벨로프 검파 수단의 출력 신호를 감산하는 감산 수단, 상기 감산 수단의 출력 신호와 기준치를 비교하고, 비교 결과에 따른 출력 신호를 발생하는 비교 수단 및 상기 비교수단의 출력 신호에따라 소정 시간만 출력 신호를 발생하는 신호 발생 수단으로 구성되는 것을 특징으로 하는 피트/글루브 판별 회로.
  2. 제1항에 있어서, MD 시스템에 이용되는 피트/글루브 판별 회로에 있어서 트래버스시에 MD상의 피트영역과 글루브 영역을 판별하는 것을 특징으로 하는 피트/글루브 판별 회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950005933A 1994-03-22 1995-03-21 피트/글루브 판별 회로 KR0168450B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP94-050730 1994-03-22
JP6050730A JP2944411B2 (ja) 1994-03-22 1994-03-22 ピット／グルーブ判別回路
JP94-50730 1994-03-22

Publications (2)

Publication Number Publication Date
KR950034125A true KR950034125A (ko) 1995-12-26
KR0168450B1 KR0168450B1 (ko) 1999-03-20

Family

ID=12866977

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950005933A KR0168450B1 (ko) 1994-03-22 1995-03-21 피트/글루브 판별 회로

Country Status (8)

Country Link
US (1) US5541907A (ko)
EP (1) EP0674311B1 (ko)
JP (1) JP2944411B2 (ko)
KR (1) KR0168450B1 (ko)
CN (1) CN1061457C (ko)
DE (1) DE69512114T2 (ko)
DK (1) DK0674311T3 (ko)
TW (1) TW350066B (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0176557B1 (ko) * 1996-01-08 1999-04-15 김광호 광디스크 시스템에 있어서 디스크 판별방법 및 장치
KR0176569B1 (ko) * 1996-01-29 1999-04-15 김광호 광디스크 시스템에 있어서 두께가 다른 디스크간의 자동판별방법 및 장치
KR100197631B1 (ko) * 1996-11-29 1999-06-15 윤종용 트래킹밸런스 보정장치
JP3690177B2 (ja) 1999-02-22 2005-08-31 三菱電機株式会社 ディスク装置
JP4315530B2 (ja) 1999-07-29 2009-08-19 富士通株式会社 非接触ｉｃカードデバイスのための検波回路
US6600344B1 (en) * 2000-06-26 2003-07-29 Motorola, Inc. Predistortion circuit for RF detector
KR100708101B1 (ko) * 2000-09-05 2007-04-16 삼성전자주식회사 비디오신호 처리 ｉｃ의 엔벨로프 검출 회로 배치 설계 방법 및 이를 이용한 ｉｃ
US20050156322A1 (en) * 2001-08-31 2005-07-21 Smith Lee J. Thin semiconductor package including stacked dies
JP5238984B2 (ja) * 2009-05-29 2013-07-17 セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー レベルシフト回路
JP6195698B2 (ja) 2012-06-11 2017-09-13 サターン ライセンシング エルエルシーＳａｔｕｒｎ Ｌｉｃｅｎｓｉｎｇ ＬＬＣ 表示装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539664A (en) * 1978-08-25 1985-09-03 Matsushita Electric Industrial Co., Ltd. Control system for optical information signal reproduction device
JPS59117740A (ja) * 1982-12-24 1984-07-07 Hitachi Ltd ビデオデイスクプレ−ヤ
JPS59140642A (ja) * 1983-01-31 1984-08-13 Canon Inc トラツキングエラ−信号検出装置
US4879707A (en) * 1985-07-30 1989-11-07 Laser Magnetic Storage International Company Optical disk tracking and seeking systems specific track formats using discontinuities
JPH083942B2 (ja) * 1986-11-20 1996-01-17 株式会社リコー 情報記録再生装置
JPH0654554B2 (ja) * 1987-03-26 1994-07-20 日本電気株式会社 光磁気再生装置
JPS63184944A (ja) * 1987-01-28 1988-07-30 Nec Corp 光磁気記録再生装置
US4989190A (en) * 1987-07-20 1991-01-29 Oki Electric Industry Co., Ltd. Apparatus for seeking a track of an optical disk in which information is recorded
US5166916A (en) * 1988-12-14 1992-11-24 Asahi Kogaku Kogyo Kabushiki Kaisha Automatic gain control apparatus
JP2600402B2 (ja) * 1989-11-20 1997-04-16 松下電器産業株式会社 光ディスク信号再生装置
JP2809835B2 (ja) * 1990-07-30 1998-10-15 松下電器産業株式会社 光ディスク装置および光ディスク

Also Published As

Publication number Publication date
CN1061457C (zh) 2001-01-31
JPH07262561A (ja) 1995-10-13
EP0674311B1 (en) 1999-09-15
EP0674311A3 (en) 1996-01-03
KR0168450B1 (ko) 1999-03-20
DK0674311T3 (da) 2000-04-03
US5541907A (en) 1996-07-30
DE69512114D1 (de) 1999-10-21
TW350066B (en) 1999-01-11
DE69512114T2 (de) 1999-12-30
JP2944411B2 (ja) 1999-09-06
EP0674311A2 (en) 1995-09-27
CN1134011A (zh) 1996-10-23

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