JPS644974A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS644974A
JPS644974A JP15959887A JP15959887A JPS644974A JP S644974 A JPS644974 A JP S644974A JP 15959887 A JP15959887 A JP 15959887A JP 15959887 A JP15959887 A JP 15959887A JP S644974 A JPS644974 A JP S644974A
Authority
JP
Japan
Prior art keywords
format
verification
pulses
pulse
processing
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
JP15959887A
Other languages
Japanese (ja)
Inventor
Shoichi Miyazawa
Tetsushi Kawamura
Kazutoshi Kato
Tetsuzo Kobashi
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 JP15959887A priority Critical patent/JPS644974A/en
Publication of JPS644974A publication Critical patent/JPS644974A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To enable a verification processing to be executed immediately setting a format start pulse and a format completion pulse as an origin and to remarkably shorten the execution time of a series of format verification, by outputting those pulses at different timings. CONSTITUTION:A format start/stop control circuit 9 which outputs two pulses, the format start pulse and the format completion pulse, in the rotation of a disk 1 only at the time of formatting is provided in a disk control part. The preparation of the verification processing for format data is performed by the pulses are detected, and when the next format start pulse is detected, a verification operation can be started immediately. In such a way, it is possible to eliminate a rotation waiting time between a format processing and the verification processing.
JP15959887A 1987-06-29 1987-06-29 Magnetic disk device Pending JPS644974A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15959887A JPS644974A (en) 1987-06-29 1987-06-29 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15959887A JPS644974A (en) 1987-06-29 1987-06-29 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPS644974A true JPS644974A (en) 1989-01-10

Family

ID=15697199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15959887A Pending JPS644974A (en) 1987-06-29 1987-06-29 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPS644974A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LT3489B (en) 1993-06-23 1995-11-27 Vladimir Cerednicenko Process for applying of decorative picture to surface of glass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LT3489B (en) 1993-06-23 1995-11-27 Vladimir Cerednicenko Process for applying of decorative picture to surface of glass

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