JPS6410478A - Magnetic disk controller - Google Patents

Magnetic disk controller

Info

Publication number
JPS6410478A
JPS6410478A JP16427287A JP16427287A JPS6410478A JP S6410478 A JPS6410478 A JP S6410478A JP 16427287 A JP16427287 A JP 16427287A JP 16427287 A JP16427287 A JP 16427287A JP S6410478 A JPS6410478 A JP S6410478A
Authority
JP
Japan
Prior art keywords
track
seek
register
counter
access
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
JP16427287A
Other languages
Japanese (ja)
Inventor
Toshio Mitsusaka
Ryoichi Hasegawa
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
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 filed Critical NEC Corp
Priority to JP16427287A priority Critical patent/JPS6410478A/en
Publication of JPS6410478A publication Critical patent/JPS6410478A/en
Pending legal-status Critical Current

Links

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE:To reduce mean seek time by assigning a head to a track being the result of averaging track numbers having an access request. CONSTITUTION:A track access counter is set to an initial value 1, a seek control block 4 checks whether or not a seek request exists and when no seek request exists, the head is moved to the track stored in a register 3. On the other hand, when the seek request exists, a control block 4 sends a seek request to a magnetic disk 5 to increment the counter 1 by 1. A mean value track calculation block 2 calculates a mean access track number from the content of the counter 1, the present content of the register 3 and track numbers having a seek request and stores the result in the register 3. The head position is moved onto the track corresponding to the mean value of the track number accessed in the past.
JP16427287A 1987-07-01 1987-07-01 Magnetic disk controller Pending JPS6410478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16427287A JPS6410478A (en) 1987-07-01 1987-07-01 Magnetic disk controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16427287A JPS6410478A (en) 1987-07-01 1987-07-01 Magnetic disk controller

Publications (1)

Publication Number Publication Date
JPS6410478A true JPS6410478A (en) 1989-01-13

Family

ID=15789932

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16427287A Pending JPS6410478A (en) 1987-07-01 1987-07-01 Magnetic disk controller

Country Status (1)

Country Link
JP (1) JPS6410478A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03214472A (en) * 1990-01-18 1991-09-19 Matsushita Electric Ind Co Ltd Information recording and reproducing device
JPH06333351A (en) * 1993-05-25 1994-12-02 Nec Corp Method and device for controlling magnetic disk device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03214472A (en) * 1990-01-18 1991-09-19 Matsushita Electric Ind Co Ltd Information recording and reproducing device
JPH06333351A (en) * 1993-05-25 1994-12-02 Nec Corp Method and device for controlling magnetic disk device

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