IT7922980A0 - Dispositivo d'individuazione di settori difettosi e di allocazione di settori di sostituzione in una memoria a dischi magnetici. - Google Patents

Dispositivo d'individuazione di settori difettosi e di allocazione di settori di sostituzione in una memoria a dischi magnetici.

Info

Publication number
IT7922980A0
IT7922980A0 IT7922980A IT2298079A IT7922980A0 IT 7922980 A0 IT7922980 A0 IT 7922980A0 IT 7922980 A IT7922980 A IT 7922980A IT 2298079 A IT2298079 A IT 2298079A IT 7922980 A0 IT7922980 A0 IT 7922980A0
Authority
IT
Italy
Prior art keywords
sectors
allocation
identification
magnetic disk
disk memory
Prior art date
Application number
IT7922980A
Other languages
English (en)
Other versions
IT1127602B (it
Original Assignee
Internazionale Pour L Inf Cii
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 Internazionale Pour L Inf Cii filed Critical Internazionale Pour L Inf Cii
Publication of IT7922980A0 publication Critical patent/IT7922980A0/it
Application granted granted Critical
Publication of IT1127602B publication Critical patent/IT1127602B/it

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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1883—Methods for assignment of alternate areas for defective areas
    • 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
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
IT22980/79A 1978-05-26 1979-05-25 Dispositivo d'individuazione di settori di sostituzione in una memoria a dischi magnetici IT1127602B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7815763A FR2426938A1 (fr) 1978-05-26 1978-05-26 Dispositif de detection de secteurs defectueux et d'allocation de secteurs de remplacement dans une memoire a disques

Publications (2)

Publication Number Publication Date
IT7922980A0 true IT7922980A0 (it) 1979-05-25
IT1127602B IT1127602B (it) 1986-05-21

Family

ID=9208743

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22980/79A IT1127602B (it) 1978-05-26 1979-05-25 Dispositivo d'individuazione di settori di sostituzione in una memoria a dischi magnetici

Country Status (6)

Country Link
US (1) US4405952A (it)
JP (1) JPS6049988B2 (it)
DE (1) DE2921387C2 (it)
FR (1) FR2426938A1 (it)
GB (1) GB2024470B (it)
IT (1) IT1127602B (it)

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US3643243A (en) * 1969-11-26 1972-02-15 Sperry Rand Corp Memory system having associated plural timing tracks and data tracks
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US3997876A (en) * 1972-06-07 1976-12-14 International Business Machines Corporation Apparatus and method for avoiding defects in the recording medium within a peripheral storage system
FR2379112A1 (fr) * 1977-01-27 1978-08-25 Cii Honeywell Bull Mode d'ecriture d'informations concernant les defauts d'un support d'enregistrement magnetique
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Also Published As

Publication number Publication date
JPS554693A (en) 1980-01-14
DE2921387C2 (de) 1983-12-29
FR2426938A1 (fr) 1979-12-21
GB2024470A (en) 1980-01-09
FR2426938B1 (it) 1980-10-31
GB2024470B (en) 1982-11-17
DE2921387A1 (de) 1979-11-29
US4405952A (en) 1983-09-20
JPS6049988B2 (ja) 1985-11-06
IT1127602B (it) 1986-05-21

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