JPS5720970A - Control system for magnetic head position - Google Patents
Control system for magnetic head positionInfo
- 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
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.
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)
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 |
-
1980
- 1980-07-09 JP JP9342180A patent/JPS5720970A/en active Pending
Cited By (5)
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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