JPS57103566A - Solid state medium magnetic disk device - Google Patents

Solid state medium magnetic disk device

Info

Publication number
JPS57103566A
JPS57103566A JP17990580A JP17990580A JPS57103566A JP S57103566 A JPS57103566 A JP S57103566A JP 17990580 A JP17990580 A JP 17990580A JP 17990580 A JP17990580 A JP 17990580A JP S57103566 A JPS57103566 A JP S57103566A
Authority
JP
Japan
Prior art keywords
head
registers
cylinder
access
track
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
JP17990580A
Other languages
Japanese (ja)
Inventor
Harunobu Kinoshita
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP17990580A priority Critical patent/JPS57103566A/en
Publication of JPS57103566A publication Critical patent/JPS57103566A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Digital Magnetic Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE:To realize an immediate alternate track access and to shorten the processing time of a data, by storing both the defective track information and the alternate track information in a single correspondence and carrying out an access based on the contents of the storage. CONSTITUTION:The value of a cylinder is stored in a cylinder address register A, and at the same time the value of a head is stored in a head address register C respectively to select a desired track. Thus the outputs of the registers A and C are supplied to the 1st and 2nd read-only storage devices A' and C' respectively. If the contents of the registers A and C give an access to the defective tracks, the addresses A and C of the cylinder and head at the parts A' and C' which are set previously corresponding to each other are delivered by the outputs of the registers A and C to be supplied to a positioning control circuit B and a decoder D of a head selecting circuit respectively. Then the seaking action is carried out for the alternate track.
JP17990580A 1980-12-19 1980-12-19 Solid state medium magnetic disk device Pending JPS57103566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17990580A JPS57103566A (en) 1980-12-19 1980-12-19 Solid state medium magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17990580A JPS57103566A (en) 1980-12-19 1980-12-19 Solid state medium magnetic disk device

Publications (1)

Publication Number Publication Date
JPS57103566A true JPS57103566A (en) 1982-06-28

Family

ID=16073950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17990580A Pending JPS57103566A (en) 1980-12-19 1980-12-19 Solid state medium magnetic disk device

Country Status (1)

Country Link
JP (1) JPS57103566A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0223611A2 (en) * 1985-11-20 1987-05-27 Seagate Technology, Inc. Method for mapping around defective sectors in a disc drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0223611A2 (en) * 1985-11-20 1987-05-27 Seagate Technology, Inc. Method for mapping around defective sectors in a disc drive

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