JPS53127706A - Detection system of read drop-out of final data block - Google Patents

Detection system of read drop-out of final data block

Info

Publication number
JPS53127706A
JPS53127706A JP4144577A JP4144577A JPS53127706A JP S53127706 A JPS53127706 A JP S53127706A JP 4144577 A JP4144577 A JP 4144577A JP 4144577 A JP4144577 A JP 4144577A JP S53127706 A JPS53127706 A JP S53127706A
Authority
JP
Japan
Prior art keywords
data block
final data
detection system
read drop
drop
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.)
Pending
Application number
JP4144577A
Other languages
Japanese (ja)
Inventor
Toshio Ogawara
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 Ltd
Original Assignee
Hitachi Ltd
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 Ltd filed Critical Hitachi Ltd
Priority to JP4144577A priority Critical patent/JPS53127706A/en
Publication of JPS53127706A publication Critical patent/JPS53127706A/en
Pending 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
    • G11B20/18—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
    • 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)

Abstract

PURPOSE:To rapidly detect read drop-out and enable countermeasures to be readily taken with hardwareby adding a special pattern block recorded with information showing the passage of a final data block next to said block.
JP4144577A 1977-04-13 1977-04-13 Detection system of read drop-out of final data block Pending JPS53127706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4144577A JPS53127706A (en) 1977-04-13 1977-04-13 Detection system of read drop-out of final data block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4144577A JPS53127706A (en) 1977-04-13 1977-04-13 Detection system of read drop-out of final data block

Publications (1)

Publication Number Publication Date
JPS53127706A true JPS53127706A (en) 1978-11-08

Family

ID=12608559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4144577A Pending JPS53127706A (en) 1977-04-13 1977-04-13 Detection system of read drop-out of final data block

Country Status (1)

Country Link
JP (1) JPS53127706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047268A (en) * 1983-08-25 1985-03-14 Fujitsu Ltd Block managing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047268A (en) * 1983-08-25 1985-03-14 Fujitsu Ltd Block managing method

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