BR9803984A - Dispositivo para leitura e/ou escrita de/para meios de gravação ótica. - Google Patents

Dispositivo para leitura e/ou escrita de/para meios de gravação ótica.

Info

Publication number
BR9803984A
BR9803984A BR9803984-9A BR9803984A BR9803984A BR 9803984 A BR9803984 A BR 9803984A BR 9803984 A BR9803984 A BR 9803984A BR 9803984 A BR9803984 A BR 9803984A
Authority
BR
Brazil
Prior art keywords
writing
reading
optical recording
recording media
mirrored signal
Prior art date
Application number
BR9803984-9A
Other languages
English (en)
Other versions
BR9803984B1 (pt
Inventor
Michael Grimm
Original Assignee
Thomson Brandt Gmbh
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
Priority claimed from DE19746990A external-priority patent/DE19746990A1/de
Application filed by Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of BR9803984A publication Critical patent/BR9803984A/pt
Publication of BR9803984B1 publication Critical patent/BR9803984B1/pt

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
    • G11B7/08—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
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
    • 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
    • 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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation

Abstract

Patente de Invenção:<B>"DISPOSITIVO PARA LEITURA E/OU ESCRITA DE/ PARA MEIOS DE GRAVAçãO óTICA"<D>. A invenção refere - se a um dispositivo para leitura de e/ou escrita para meios de gravação ótica, que possui um dispositivo de leitura por varredura, cuja saída é ligada à entrada de um dispositivo conversor analógico-para-digital (3), cuja saída é por sua vez ligada à entrada de um dispositiva detector de sinal espelhado (1). O objetivo da invenção consiste em propor um dispositivo deste tipo que é capaz de gerar um sinal espelhado confiável mesmo em freq³ências de cruzamento de pistas relativamente elevadas. Isto é alcançado de acordo com a invenção pelo fato de o dispositivo detector de sinal espelhado (1) possuir pelo menos um elemento (11, 12, 24) que é variável em função de freq³ência. O dispositivo de acordo com a invenção é, em particular, um dispositivo de reprodução de CD's ou DVD's.
BRPI9803984-9A 1997-09-30 1998-09-29 dispositivo para leitura e/o escrita para meios de gravação ótica; método para uma formação dependente de frequência de um parámetro constituìdo por um sinal espelhado; e método para identificação do tipo de um meio de gravação ótica. BR9803984B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19743068 1997-09-30
DE19746990A DE19746990A1 (de) 1997-09-30 1997-10-24 Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger

Publications (2)

Publication Number Publication Date
BR9803984A true BR9803984A (pt) 1999-11-16
BR9803984B1 BR9803984B1 (pt) 2010-03-09

Family

ID=26040434

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9803984-9A BR9803984B1 (pt) 1997-09-30 1998-09-29 dispositivo para leitura e/o escrita para meios de gravação ótica; método para uma formação dependente de frequência de um parámetro constituìdo por um sinal espelhado; e método para identificação do tipo de um meio de gravação ótica.

Country Status (8)

Country Link
US (1) US6154429A (pt)
EP (1) EP0908873B1 (pt)
JP (1) JPH11203688A (pt)
CN (1) CN1264148C (pt)
BR (1) BR9803984B1 (pt)
HK (1) HK1017938A1 (pt)
ID (1) ID20982A (pt)
SG (1) SG92617A1 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11328689A (ja) * 1998-05-21 1999-11-30 Samsung Electronics Co Ltd ディスク状記録媒体の再生装置におけるシーク制御方法
GB0029120D0 (en) * 2000-11-29 2001-01-10 Lsi Logic Europ Ltd Apparatus and method of interrupt detection in an optical disc environment
KR100421003B1 (ko) * 2001-03-27 2004-03-03 삼성전자주식회사 미러 신호 조정 장치
US20030079161A1 (en) * 2001-10-22 2003-04-24 Verboom Johannes J. Optimized data storage system and method for optical storage system
TWI288402B (en) * 2003-12-09 2007-10-11 Mediatek Inc Automatic adjustment device and method for MIRR signal of compact disc drive
US7684291B2 (en) * 2006-06-05 2010-03-23 Mediatek Inc. Method and apparatus for blank detection of an optical disc
US7724090B2 (en) * 2006-06-05 2010-05-25 Mediatek Inc. Loop control apparatus and method thereof
US7796480B2 (en) * 2006-06-05 2010-09-14 Mediatek Inc. Apparatus and methods for light spot servo signal detection

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619258A1 (de) * 1986-06-07 1987-12-10 Blaupunkt Werke Gmbh Compact disc (cd)-spieler
US5031166A (en) * 1988-01-25 1991-07-09 Laser Magnetic Storage International Company Optical disk tracking and seeking systems and specific track formats using discontinuities and circuitry therefor
JPH01232582A (ja) * 1988-03-14 1989-09-18 Nec Corp 情報記録再生装置
JP2646130B2 (ja) * 1989-03-13 1997-08-25 パイオニア株式会社 トラックジャンプ駆動装置
JPH0373422A (ja) * 1989-05-18 1991-03-28 Nec Corp 光ディスク装置の和信号処理回路
JPH04341936A (ja) * 1991-05-20 1992-11-27 Toshiba Corp 記録媒体処理装置
JP3003338B2 (ja) * 1991-10-29 2000-01-24 ソニー株式会社 トラック横切り検出回路及び再生装置
KR100272118B1 (ko) * 1991-11-06 2000-11-15 이데이 노부유끼 디지탈 서보 제어 회로를 구비한 광디스크 플레이어 및 트래킹 서보 회로
JPH087498A (ja) * 1994-06-17 1996-01-12 Hitachi Ltd 記録情報再生装置
JPH09167354A (ja) * 1995-12-18 1997-06-24 Nec Corp 光ディスク装置のトラックカウントパルス整形回路
JP3671572B2 (ja) * 1997-01-10 2005-07-13 ソニー株式会社 光ディスク装置

Also Published As

Publication number Publication date
JPH11203688A (ja) 1999-07-30
CN1264148C (zh) 2006-07-12
EP0908873B1 (en) 2003-01-22
EP0908873A1 (en) 1999-04-14
HK1017938A1 (en) 1999-12-03
US6154429A (en) 2000-11-28
BR9803984B1 (pt) 2010-03-09
CN1213127A (zh) 1999-04-07
SG92617A1 (en) 2002-11-19
ID20982A (id) 1999-04-01

Similar Documents

Publication Publication Date Title
KR870004425A (ko) 트랙방향으로 장착된 광학 정보 구조의 판독기록장치
KR940024699A (ko) 신호 검출 방법 및 신호 검출 장치
KR900016898A (ko) 디지탈 정보 신호의 기록 및 판독장치
BR9803984A (pt) Dispositivo para leitura e/ou escrita de/para meios de gravação ótica.
EP0933758A3 (en) Optical information reproduction device and signal processing circuit used therein
MY119129A (en) Device for reading from and/or writing to optical recording media
KR950015336A (ko) 레벨 설정 회로
KR900008440A (ko) 디지탈 신호 재생회로
KR950034131A (ko) 광학장치
KR950034108A (ko) 서보 어드레스 마크 검출 보상 회로
KR900005420A (ko) Pcm 오디오데이터 기록재생장치
KR900702514A (ko) 광학 기록매체의 유형 식별회로
KR900005330A (ko) 수동으로 이동된 지지 문서에 의해 이동된 마그네틱 트랙을 판독하고 엔코딩하기 위한 시스템
MY122428A (en) Apparatus for reading an optical data carrier
BR0002173A (pt) Aparelho para ler ou gravar em meios de gravação óticos
KR880014533A (ko) 광학적 파장 다중 기록 재생장치
ATE216121T1 (de) Digitalsignalaufzeichnungsgerät
KR880002146A (ko) 비디오 디스크플레이어의 포커스 서보게
KR980004346A (ko) 향상된 음질을 갖는 카세트 테이프 레코오더
KR970017461A (ko) 레이저 디스크 플레이어의 nrz신호 출력회로
SU1476528A1 (ru) Устройство слежени за информационной дорожкой носител оптической записи
TR199700595T1 (xx) İzleme sinyalleri ile donatılmış uzunlamasına bir kayıt taşıyıcısında veya taşıyıcısından bilgi sinyalinin kaydı ve yeniden oluşturulması.
KR960005463A (ko) 광디스크 재생장치
FI972091A0 (fi) Foerfarande och arrangemang foer att anslutna en processor till en ASIC-krets
MXPA02003982A (es) Medio de grabacion optico, substrato para el medio de grabacion optico y dispositivo de disco optico.

Legal Events

Date Code Title Description
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 09/03/2010, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE AS 13A, 14A, 15A, 16A E 17A ANUIDADES.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2343 DE 01-12-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.