FR2424601B1 - - Google Patents

Info

Publication number
FR2424601B1
FR2424601B1 FR7812118A FR7812118A FR2424601B1 FR 2424601 B1 FR2424601 B1 FR 2424601B1 FR 7812118 A FR7812118 A FR 7812118A FR 7812118 A FR7812118 A FR 7812118A FR 2424601 B1 FR2424601 B1 FR 2424601B1
Authority
FR
France
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
FR7812118A
Other languages
French (fr)
Other versions
FR2424601A1 (en
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 SA
Original Assignee
Bull SA
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 SA filed Critical Bull SA
Priority to FR7812118A priority Critical patent/FR2424601B1/fr
Publication of FR2424601A1 publication Critical patent/FR2424601A1/en
Application granted granted Critical
Publication of FR2424601B1 publication Critical patent/FR2424601B1/fr
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/10009Improvement or modification of read or write signals
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28Indexing; 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
    • G11B27/30Indexing; 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
    • G11B27/3027Indexing; 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027Analogue recording
    • G11B5/035Equalising
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
FR7812118A 1978-04-25 1978-04-25 Expired FR2424601B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7812118A FR2424601B1 (en) 1978-04-25 1978-04-25

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR7812118A FR2424601B1 (en) 1978-04-25 1978-04-25
GB7911976A GB2022886B (en) 1978-04-25 1979-04-05 Method of processing the read signal from a data carrier and arrangement for putting the method into practice
IT2208079A IT1112524B (en) 1978-04-25 1979-04-23 of the read signal of servo method of an information carrier, and device for its implementation
JP4918979A JPH0135421B2 (en) 1978-04-25 1979-04-23
DE19792916473 DE2916473C2 (en) 1978-04-25 1979-04-24

Publications (2)

Publication Number Publication Date
FR2424601A1 FR2424601A1 (en) 1979-11-23
FR2424601B1 true FR2424601B1 (en) 1980-09-19

Family

ID=9207527

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812118A Expired FR2424601B1 (en) 1978-04-25 1978-04-25

Country Status (5)

Country Link
JP (1) JPH0135421B2 (en)
DE (1) DE2916473C2 (en)
FR (1) FR2424601B1 (en)
GB (1) GB2022886B (en)
IT (1) IT1112524B (en)

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
JPH0415521B2 (en) * 1982-10-04 1992-03-18 Tokyo Shibaura Electric Co
DE3689023T2 (en) * 1985-10-08 1994-02-10 Sharp Kk Waveform processing circuit.
JPH02137169A (en) * 1988-11-17 1990-05-25 Mitsubishi Electric Corp Signal processing circuit
JPH02166670A (en) * 1988-12-20 1990-06-27 Tokico Ltd Magnetic disk device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912645B1 (en) * 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 (en) * 1976-01-16 1977-07-21 Licentia Gmbh AF amplifier AGC circuit - has main and auxiliary RC timing elements connected in parallel
FR2346806B1 (en) * 1976-03-31 1979-01-05 Cii Honeywell Bull

Also Published As

Publication number Publication date
GB2022886B (en) 1983-02-02
IT7922080D0 (en) 1979-04-23
FR2424601A1 (en) 1979-11-23
JPH0135421B2 (en) 1989-07-25
DE2916473A1 (en) 1979-10-31
IT1112524B (en) 1986-01-20
JPS54143611A (en) 1979-11-09
GB2022886A (en) 1979-12-19
DE2916473C2 (en) 1988-08-11

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Legal Events

Date Code Title Description
ST Notification of lapse