JPS57186263A - Controlling method of disk device - Google Patents

Controlling method of disk device

Info

Publication number
JPS57186263A
JPS57186263A JP7089481A JP7089481A JPS57186263A JP S57186263 A JPS57186263 A JP S57186263A JP 7089481 A JP7089481 A JP 7089481A JP 7089481 A JP7089481 A JP 7089481A JP S57186263 A JPS57186263 A JP S57186263A
Authority
JP
Japan
Prior art keywords
signal
secblk
abnormality
sector
detected
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
JP7089481A
Other languages
Japanese (ja)
Inventor
Noriyuki Sakaguchi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7089481A priority Critical patent/JPS57186263A/en
Publication of JPS57186263A publication Critical patent/JPS57186263A/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel

Abstract

PURPOSE:To sharply reduce the time required for detecting abnormality when the sector detecting is not possible in a disk device using both index signal and sector signal, by providing a specific auxiliary signal. CONSTITUTION:When the signal of an auxiliary signal (SECBLK) is assigned at the time point when the detection of a sector(m) is assigned and a magnetic head is at a location (a). the SECBLK signal is outputted after 1/8 rotation and a desired SEC (m) comes after 3/4 rotation after the SECBLK signal is outputted. When the SEC (m) cannot be detected, the 2nd SECBLK will be detected after 1/4 rotation. Therefore, the rotating angle of the disk until an abnormality is found is reduced to about 1/5 and thus the abnormality detecting time is sharply reduced when compared with conventional method where the abnormality detecting processing is performed after the 2nd index signal is detected.
JP7089481A 1981-05-12 1981-05-12 Controlling method of disk device Pending JPS57186263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7089481A JPS57186263A (en) 1981-05-12 1981-05-12 Controlling method of disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7089481A JPS57186263A (en) 1981-05-12 1981-05-12 Controlling method of disk device

Publications (1)

Publication Number Publication Date
JPS57186263A true JPS57186263A (en) 1982-11-16

Family

ID=13444686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7089481A Pending JPS57186263A (en) 1981-05-12 1981-05-12 Controlling method of disk device

Country Status (1)

Country Link
JP (1) JPS57186263A (en)

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