FR2468182B1 - Procede et appareil pour l'enregistrement et la reproduction magnetique de signaux numeriques - Google Patents

Procede et appareil pour l'enregistrement et la reproduction magnetique de signaux numeriques

Info

Publication number
FR2468182B1
FR2468182B1 FR8022174A FR8022174A FR2468182B1 FR 2468182 B1 FR2468182 B1 FR 2468182B1 FR 8022174 A FR8022174 A FR 8022174A FR 8022174 A FR8022174 A FR 8022174A FR 2468182 B1 FR2468182 B1 FR 2468182B1
Authority
FR
France
Prior art keywords
reproduction
magnetic recording
digital signals
digital
signals
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
Application number
FR8022174A
Other languages
English (en)
Other versions
FR2468182A1 (fr
Inventor
Seiichi Mita
Yasuhiro Hirano
Yoshizumi Eto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Publication of FR2468182A1 publication Critical patent/FR2468182A1/fr
Application granted granted Critical
Publication of FR2468182B1 publication Critical patent/FR2468182B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10194—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using predistortion during writing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Digital Magnetic Recording (AREA)
  • Dc Digital Transmission (AREA)
FR8022174A 1979-10-17 1980-10-16 Procede et appareil pour l'enregistrement et la reproduction magnetique de signaux numeriques Expired FR2468182B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54132943A JPS5834002B2 (ja) 1979-10-17 1979-10-17 デイジタル信号の磁気記録再生方式

Publications (2)

Publication Number Publication Date
FR2468182A1 FR2468182A1 (fr) 1981-04-30
FR2468182B1 true FR2468182B1 (fr) 1987-11-13

Family

ID=15093117

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8022174A Expired FR2468182B1 (fr) 1979-10-17 1980-10-16 Procede et appareil pour l'enregistrement et la reproduction magnetique de signaux numeriques

Country Status (6)

Country Link
US (1) US4367495A (fr)
JP (1) JPS5834002B2 (fr)
CA (1) CA1150399A (fr)
DE (1) DE3038997C2 (fr)
FR (1) FR2468182B1 (fr)
GB (1) GB2061674B (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495528A (en) * 1981-07-10 1985-01-22 Victor Company Of Japan, Ltd. Magnetic reproducing system for a digital signal
US4504872A (en) * 1983-02-08 1985-03-12 Ampex Corporation Digital maximum likelihood detector for class IV partial response
US4562582A (en) * 1983-04-18 1985-12-31 Nippon Telegraph & Telephone Public Corporation Burst signal receiving apparatus
US4580176A (en) * 1983-11-21 1986-04-01 International Business Machines Corporation Adaptive equalization circuit for magnetic recording channels utilizing signal timing
JPH0779360B2 (ja) * 1986-03-20 1995-08-23 松下電器産業株式会社 誤り検出装置
NL8701333A (nl) * 1987-06-09 1989-01-02 Philips Nv Inrichting voor het bestrijden van intersymboolinterferentie en ruis.
JPH0748675B2 (ja) * 1987-08-21 1995-05-24 日本電気株式会社 デジタル伝送方式
JP2576532B2 (ja) * 1987-10-15 1997-01-29 ソニー株式会社 ディジタル信号記録再生装置
JP2513747B2 (ja) * 1987-12-17 1996-07-03 パイオニア株式会社 デ―タ記録再生方法
US4888775A (en) * 1988-03-18 1989-12-19 International Business Machines Corporation Trellis codes for partial response channels
FR2644025A1 (fr) * 1989-03-03 1990-09-07 Thomson Csf Dispositif d'extraction d'impulsions " 3 etats " dans un milieu bruite
JPH02236823A (ja) * 1989-03-09 1990-09-19 Nec Corp 光記録再生方式
JP2664249B2 (ja) * 1989-03-13 1997-10-15 株式会社日立製作所 タイミング抽出回路，それを利用した通信システム及びタイミング抽出方法並びに通信装置
US5424882A (en) * 1989-03-13 1995-06-13 Hitachi, Ltd. Signal processor for discriminating recording data
US5267267A (en) * 1989-03-13 1993-11-30 Hitachi, Ltd. Timing extraction method and communication system
JP2600905B2 (ja) * 1989-05-29 1997-04-16 日本電気株式会社 光記録再生方式
KR930011430B1 (ko) * 1990-02-28 1993-12-06 삼성전자 주식회사 디지탈신호 기록회로
US5241385A (en) * 1991-03-11 1993-08-31 Zenith Electronics Corporation Television signal transmission system with carrier offset compensation
US5181112A (en) * 1991-03-11 1993-01-19 Zenith Electronics Corporation Television signal transmission system with carrier offset compensation
DE4132004A1 (de) * 1991-09-26 1993-04-01 Broadcast Television Syst Verfahren zur induktiven uebertragung eines datensignals
EP0593173B1 (fr) * 1992-10-16 1998-11-11 Matsushita Electric Industrial Co., Ltd. Appareil pour enregistrer des signaux numériques en contrÔlant les caractéristiques de fréquence des signaux numériques
US5408262A (en) * 1993-12-30 1995-04-18 Goldstar Co., Ltd. Cochannel interference filter for HDTV transmission system
KR100588441B1 (ko) * 1997-10-07 2006-06-13 소니 가부시끼 가이샤 자기 기록 재생 장치
US10212009B2 (en) * 2017-03-06 2019-02-19 Blackberry Limited Modulation for a data bit stream

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492578A (en) * 1967-05-19 1970-01-27 Bell Telephone Labor Inc Multilevel partial-response data transmission
US3588836A (en) * 1967-11-24 1971-06-28 Gen Dynamics Corp Magnetic recording
US3636536A (en) * 1968-03-21 1972-01-18 Leach Corp Derived clock circuit in a phase modulated digital data handling system
GB1268627A (en) * 1968-07-12 1972-03-29 Plessey Telecomm Res Ltd Improvements in or relating to digital modulation systems
JPS4912645B1 (fr) * 1969-04-21 1974-03-26
US4041418A (en) * 1973-01-05 1977-08-09 Siemens Aktiengesellschaft Equalizer for partial response signals
US3863025A (en) * 1973-04-25 1975-01-28 Gte Automatic Electric Lab Inc Data transmission method
JPS5325729B2 (fr) * 1973-09-27 1978-07-28
FR2310666A1 (fr) * 1975-05-05 1976-12-03 Telecommunications Sa Procede et dispositif de transmission par modem d'un signal de synchronisation utilise pour le demultiplexage temporel des informations transmises par ledit modem
CA1078929A (fr) * 1977-11-02 1980-06-03 Peter E. K. Chow Regenerateur digital avec protection amelioree contre le bruit
US4234898A (en) * 1978-03-15 1980-11-18 Nippon Hoso Kyokai Digital magnetic recording and reproducing apparatus
US4195318A (en) * 1978-03-20 1980-03-25 Sperry Corporation High density bias linearized magnetic recording system utilizing Nyquist bandwidth partial response transmission

Also Published As

Publication number Publication date
DE3038997A1 (de) 1981-05-07
DE3038997C2 (de) 1986-04-30
JPS5658121A (en) 1981-05-21
GB2061674B (en) 1983-11-09
CA1150399A (fr) 1983-07-19
GB2061674A (en) 1981-05-13
JPS5834002B2 (ja) 1983-07-23
US4367495A (en) 1983-01-04
FR2468182A1 (fr) 1981-04-30

Similar Documents

Publication Publication Date Title
FR2468182B1 (fr) Procede et appareil pour l'enregistrement et la reproduction magnetique de signaux numeriques
FR2456987B1 (fr) Appareil d'enregistrement et de reproduction de signaux numeriques
FR2505594B1 (fr) Appareil d'enregistrement et de reproduction de signaux d'information
FR2480542B1 (fr) Appareil d'enregistrement et/ou de reproduction de signaux numeriques video et audio
FR2475339B1 (fr) Appareil et procede d'enregistrement et de reproduction numerique
FR2466076B1 (fr) Appareil d'enregistrement et/ou de reproduction d'information
FR2489062B1 (fr) Appareil d'enregistrement de signaux video
FR2569038B1 (fr) Appareil d'enregistrement et de reproduction d'informations
GB2035620B (en) Method of and apparatus for recording information and tracing signals
FR2458127B1 (fr) Appareil d'enregistrement et/ou de reproduction magnetique
FR2476420B1 (fr) Appareil de reproduction de signaux d'information
FR2472811B1 (fr) Appareil d'enregistrement et/ou de reproduction de signaux d'information et support d'enregistrement pour un tel appareil
BE881160A (fr) Dispositif pour l'enregistrement et/ou la reproduction de signaux video
FR2489635B1 (fr) Circuit de neutralisation de signal audio pour un appareil d'enregistrement et de reproduction magnetique
FR2501890B1 (fr) Appareil pour l'enregistrement respectivement la reproduction de supports magnetiques
FR2494480B1 (fr) Procede et appareil d'enregistrement de signaux d'information
FR2453479B1 (fr) Dispositif a transformateur tournant multi-canaux pour appareil d'enregistrement et/ou de reproduction
FR2498862B1 (fr) Procede et appareil d'enregistrement et de reproduction d'un signal numerique d'informations
GB2115184B (en) Information signal reproducing apparatus and devices for and methods of moving pick-up means thereof
FR2420181B1 (fr) Appareil d'enregistrement et de reproduction magnetique numerique
FR2518343B1 (fr) Appareil d'enregistrement et de reproduction de signaux d'image et de son
FR2524752B1 (fr) Systeme d'enregistrement de signaux numeriques et appareil de reproduction de ces signaux
FR2490437B1 (fr) Circuit de detection d'un signal periodique pour appareil de reproduction
JPS54118209A (en) Method of and device for recording video signal
FR2485312B1 (fr) Appareil de reproduction de signaux video

Legal Events

Date Code Title Description
ST Notification of lapse