JPH0135421B2 - - Google Patents

Info

Publication number
JPH0135421B2
JPH0135421B2 JP54049189A JP4918979A JPH0135421B2 JP H0135421 B2 JPH0135421 B2 JP H0135421B2 JP 54049189 A JP54049189 A JP 54049189A JP 4918979 A JP4918979 A JP 4918979A JP H0135421 B2 JPH0135421 B2 JP H0135421B2
Authority
JP
Japan
Prior art keywords
waveform
data
read
peak amplitude
cell
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
JP54049189A
Other languages
English (en)
Japanese (ja)
Other versions
JPS54143611A (en
Inventor
Karudo Kuroodo
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.)
Bull SAS
Original Assignee
Bull SAS
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 Bull SAS filed Critical Bull SAS
Publication of JPS54143611A publication Critical patent/JPS54143611A/ja
Publication of JPH0135421B2 publication Critical patent/JPH0135421B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Manipulation Of Pulses (AREA)
JP4918979A 1978-04-25 1979-04-23 Method of and device for tracting and controlling signal read from a data carrier Granted JPS54143611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7812118A FR2424601A1 (fr) 1978-04-25 1978-04-25 Procede d'asservissement du signal de lecture d'un support d'informations et dispositif pour le mettre en oeuvre

Publications (2)

Publication Number Publication Date
JPS54143611A JPS54143611A (en) 1979-11-09
JPH0135421B2 true JPH0135421B2 (enrdf_load_stackoverflow) 1989-07-25

Family

ID=9207527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4918979A Granted JPS54143611A (en) 1978-04-25 1979-04-23 Method of and device for tracting and controlling signal read from a data carrier

Country Status (5)

Country Link
JP (1) JPS54143611A (enrdf_load_stackoverflow)
DE (1) DE2916473A1 (enrdf_load_stackoverflow)
FR (1) FR2424601A1 (enrdf_load_stackoverflow)
GB (1) GB2022886B (enrdf_load_stackoverflow)
IT (1) IT1112524B (enrdf_load_stackoverflow)

Families Citing this family (5)

* 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
JPS5963005A (ja) * 1982-10-04 1984-04-10 Toshiba Corp 磁気記録方式
EP0219037B1 (en) * 1985-10-08 1993-09-15 Sharp Kabushiki Kaisha Waveform processing circuit
JPH02137169A (ja) * 1988-11-17 1990-05-25 Mitsubishi Electric Corp 信号処理回路
JPH02166670A (ja) * 1988-12-20 1990-06-27 Tokico Ltd 磁気ディスク装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912645B1 (enrdf_load_stackoverflow) * 1969-04-21 1974-03-26
US3593333A (en) * 1969-11-26 1971-07-13 Ibm Position detection for a track following servo system
US3660821A (en) * 1970-06-17 1972-05-02 Burroughs Corp Disc file agc circuit
US3691543A (en) * 1971-02-08 1972-09-12 Ibm Positioning system including servo track configuration and associated demodulator
US3840756A (en) * 1973-02-05 1974-10-08 Honeywell Inf Systems Gain control circuit using sample and hold feedback
US3902190A (en) * 1973-11-23 1975-08-26 Rca Corp Programmable test of read/write circuitry by varying clipping levels
US3879674A (en) * 1973-12-27 1975-04-22 Burroughs Corp Automatic gain control circuit
DE2601437A1 (de) * 1976-01-16 1977-07-21 Licentia Gmbh Schaltung zur gewinnung einer regelspannung aus der ausgangsspannung eines tonfrequenz-verstaerkers fuer eine automatische verstaerkungsregelung
FR2346806A1 (fr) * 1976-03-31 1977-10-28 Honeywell Bull Soc Ind Mode d'ecriture d'adresses sur un support d'enregist rement magnetique

Also Published As

Publication number Publication date
IT1112524B (it) 1986-01-20
FR2424601B1 (enrdf_load_stackoverflow) 1980-09-19
JPS54143611A (en) 1979-11-09
FR2424601A1 (fr) 1979-11-23
GB2022886B (en) 1983-02-02
IT7922080A0 (it) 1979-04-23
DE2916473A1 (de) 1979-10-31
GB2022886A (en) 1979-12-19
DE2916473C2 (enrdf_load_stackoverflow) 1988-08-11

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