JPS52145017A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS52145017A
JPS52145017A JP6198876A JP6198876A JPS52145017A JP S52145017 A JPS52145017 A JP S52145017A JP 6198876 A JP6198876 A JP 6198876A JP 6198876 A JP6198876 A JP 6198876A JP S52145017 A JPS52145017 A JP S52145017A
Authority
JP
Japan
Prior art keywords
plural
magnetic disk
disk device
magnetic heads
erasures
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
JP6198876A
Other languages
Japanese (ja)
Inventor
Takehisa Tokunaga
Akira Sekino
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 JP6198876A priority Critical patent/JPS52145017A/en
Publication of JPS52145017A publication Critical patent/JPS52145017A/en
Pending legal-status Critical Current

Links

Landscapes

  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE: To make plural erasures on track simultaneously by selecting plural magnetic heads corresponding to plural tracks to be erased simultaneously, thus making erasing current flow in plural magnetic heads simultaneously.
COPYRIGHT: (C)1977,JPO&Japio
JP6198876A 1976-05-27 1976-05-27 Magnetic disk device Pending JPS52145017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6198876A JPS52145017A (en) 1976-05-27 1976-05-27 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6198876A JPS52145017A (en) 1976-05-27 1976-05-27 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPS52145017A true JPS52145017A (en) 1977-12-02

Family

ID=13187067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6198876A Pending JPS52145017A (en) 1976-05-27 1976-05-27 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPS52145017A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358304A (en) * 1989-07-26 1991-03-13 Nec Ibaraki Ltd Read/write circuit
US9142246B1 (en) * 2014-10-10 2015-09-22 Seagate Technology Llc Apparatus and methods to reduce hard disk drive manufacturing test time
US9361919B1 (en) 2014-10-10 2016-06-07 Seagate Technology Llc Disk drive with parallel head actuation
US10255943B1 (en) 2018-05-17 2019-04-09 Seagate Technology Llc Independent head, dual reader control logic

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358304A (en) * 1989-07-26 1991-03-13 Nec Ibaraki Ltd Read/write circuit
US9142246B1 (en) * 2014-10-10 2015-09-22 Seagate Technology Llc Apparatus and methods to reduce hard disk drive manufacturing test time
US9361919B1 (en) 2014-10-10 2016-06-07 Seagate Technology Llc Disk drive with parallel head actuation
US10255943B1 (en) 2018-05-17 2019-04-09 Seagate Technology Llc Independent head, dual reader control logic

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