JPS5720970A - Control system for magnetic head position - Google Patents

Control system for magnetic head position

Info

Publication number
JPS5720970A
JPS5720970A JP9342180A JP9342180A JPS5720970A JP S5720970 A JPS5720970 A JP S5720970A JP 9342180 A JP9342180 A JP 9342180A JP 9342180 A JP9342180 A JP 9342180A JP S5720970 A JPS5720970 A JP S5720970A
Authority
JP
Japan
Prior art keywords
circuit
output
magnetic head
carriage
cylinder
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
JP9342180A
Other languages
Japanese (ja)
Inventor
Masanobu Obara
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 JP9342180A priority Critical patent/JPS5720970A/en
Publication of JPS5720970A publication Critical patent/JPS5720970A/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To eliminate the unbalance between out-seek and in-seek operations as to any cylinder, by switching voltage values for correcting external force according to a carriage position when moving a magnetic head to a required track. CONSTITUTION:The position of a carriage 1 mounting a magnetic head is detected by a position detecting circuit 2, whose output is differentiated 3 to obtain the output of a speed signal generating circuit 4. Under the command of a host device, the output of a speed reference signal generating circuit 5 is applied to a summing amplifier 6 and its difference output from the output of the circuit 4 is supplied to a power amplifier 7, whose output is supplied to an electromagnetic coil 8 moving the carriage 1 and also current-detected 9 to be applied to the circuit 4. On the basis of information from the host device, a current-cylinder detecting circuit 12 supplies information on the position of the magnetic head to an inner/outer-circumference discriminating circuit 13 to discriminate whether a specific cylinder at an intermediate part is at the inner circumference or outer circumference. With the output of the circuit 13, an external correction voltage is outputted to a correcting circuit 10 or 11 by being switched. Thus, the carriage 1 is moved stably.
JP9342180A 1980-07-09 1980-07-09 Control system for magnetic head position Pending JPS5720970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9342180A JPS5720970A (en) 1980-07-09 1980-07-09 Control system for magnetic head position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9342180A JPS5720970A (en) 1980-07-09 1980-07-09 Control system for magnetic head position

Publications (1)

Publication Number Publication Date
JPS5720970A true JPS5720970A (en) 1982-02-03

Family

ID=14081828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9342180A Pending JPS5720970A (en) 1980-07-09 1980-07-09 Control system for magnetic head position

Country Status (1)

Country Link
JP (1) JPS5720970A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900444A (en) * 1985-08-29 1990-02-13 Terumo Corporation A porous membrane for blood components and method for manufacturing thereof
US4940541A (en) * 1987-02-11 1990-07-10 Tokyo Bi-Tech Laboratories, Inc. Blood cleaning hollow fiber membrane, method for cleaning blood, and apparatus therefor
JPH0616862A (en) * 1992-05-18 1994-01-25 Tonen Corp Microporous polyethylene film
US10814371B2 (en) 2016-09-09 2020-10-27 Samsung Electronics Co., Ltd. Cooking appliance and method of manufacturing housing of cooking appliance

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900444A (en) * 1985-08-29 1990-02-13 Terumo Corporation A porous membrane for blood components and method for manufacturing thereof
US4940541A (en) * 1987-02-11 1990-07-10 Tokyo Bi-Tech Laboratories, Inc. Blood cleaning hollow fiber membrane, method for cleaning blood, and apparatus therefor
US5075003A (en) * 1987-11-02 1991-12-24 Tokyo Bi-Tech Laboratories, Inc. Blood cleaning hollow fiber membrane method for cleaning blood, and apparatus therefor
JPH0616862A (en) * 1992-05-18 1994-01-25 Tonen Corp Microporous polyethylene film
US10814371B2 (en) 2016-09-09 2020-10-27 Samsung Electronics Co., Ltd. Cooking appliance and method of manufacturing housing of cooking appliance

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