KR890004280A - 자기헤드 구동회로 - Google Patents
자기헤드 구동회로 Download PDFInfo
- Publication number
- KR890004280A KR890004280A KR1019880010488A KR880010488A KR890004280A KR 890004280 A KR890004280 A KR 890004280A KR 1019880010488 A KR1019880010488 A KR 1019880010488A KR 880010488 A KR880010488 A KR 880010488A KR 890004280 A KR890004280 A KR 890004280A
- Authority
- KR
- South Korea
- Prior art keywords
- coil
- switching
- magnetic head
- drive circuit
- head drive
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
-
- 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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/022—H-Bridge head driver circuit, the "H" configuration allowing to inverse the current direction in the head
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10504—Recording
- G11B11/10508—Recording by modulating only the magnetic field at the transducer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10595—Control of operating function
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 본 발명을 적용한 자기헤드 구동회로의 제 1 의 실시예의 구성을 도시하는 회로도. 제 2 도는 상기 제 1 의 실시예의 동작을 설명하기 위한 타임챠트. 제 3 도는 상기 제 1 의 실시예의 제어신호 생성회로의 구성을 도시하는 회로도.
Claims (1)
- 광자기기록을 하는 자기헤드의 코일에 전류를 공급하기 위한 전위가 다른 3개의 전원과, 상기 코일의 일단에 상기 각 전원을 각각 절환 접속하는 스위칭 소자와, 상기 코일의 타단에 상기 각 전원을 각각 절환 접속하는 스위칭소자를 갖추며, 기록신호에 기준해서 상기 각 스위칭소자를 동작시키고 상기 코일의 양단에 상기 전위가 다른 각 전원을 절환접속해서 자계발전시에 상기 코일의 양단에 정상자계 발생시의 전위차보다 큰 전위차를 부여하도록 한 것을 특징으로 하는 자기헤드 구동회로.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP204095 | 1987-08-19 | ||
JP62204095A JPH0833974B2 (ja) | 1987-08-19 | 1987-08-19 | 磁気ヘッド駆動回路 |
JP62-204095 | 1987-08-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR890004280A true KR890004280A (ko) | 1989-04-21 |
KR960013002B1 KR960013002B1 (ko) | 1996-09-25 |
Family
ID=16484709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019880010488A KR960013002B1 (ko) | 1987-08-19 | 1988-08-18 | 자기헤드 구동회로 |
Country Status (5)
Country | Link |
---|---|
US (1) | US4937802A (ko) |
EP (1) | EP0304298B1 (ko) |
JP (1) | JPH0833974B2 (ko) |
KR (1) | KR960013002B1 (ko) |
DE (1) | DE3872982T2 (ko) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5233577A (en) * | 1987-10-14 | 1993-08-03 | U.S. Philips Corp. | Magneto-optical recording apparatus and energizing circuit for use in such a magneto-optical recording apparatus |
DE3836125A1 (de) * | 1988-10-22 | 1990-05-03 | Thomson Brandt Gmbh | Schaltungsanordnung zur umkehrung eines magnetfeldes |
DE3838858A1 (de) * | 1988-11-17 | 1990-05-23 | Thomson Brandt Gmbh | Schaltungsanordnung zur umkehrung eines magnetfeldes |
JP2854882B2 (ja) * | 1989-07-14 | 1999-02-10 | キヤノン株式会社 | 光磁気記録装置及び光磁気記録方法 |
DE4000663C1 (ko) * | 1990-01-11 | 1991-06-13 | Siemens Nixdorf Informationssysteme Ag, 4790 Paderborn, De | |
JPH03214441A (ja) * | 1990-01-18 | 1991-09-19 | Canon Inc | 光磁気記録装置 |
JP2531997B2 (ja) * | 1990-03-26 | 1996-09-04 | ティアツク株式会社 | ディジタル記録回路 |
JPH0469802A (ja) * | 1990-07-11 | 1992-03-05 | Sony Corp | 磁気変調コイル駆動回路 |
DE4022400A1 (de) * | 1990-07-13 | 1992-01-16 | Thomson Brandt Gmbh | Schaltungsanordnung zur umkehrung eines magnetfeldes |
DE4034345C1 (ko) * | 1990-10-29 | 1991-08-29 | Mapal Fabrik Fuer Praezisionswerkzeuge Dr. Kress Kg, 7080 Aalen, De | |
US5111381A (en) * | 1991-08-12 | 1992-05-05 | Motorola, Inc. | H-bridge flyback recirculator |
US5189567A (en) * | 1991-08-26 | 1993-02-23 | Eastman Kodak Company | High speed switching circuit for controlling current flow in a bridge circuit coil for use in a magneto-optic direct overwrite system |
JP2859766B2 (ja) * | 1991-12-24 | 1999-02-24 | シャープ株式会社 | 磁気ヘッド駆動回路 |
US5404342A (en) * | 1992-01-16 | 1995-04-04 | Sony Corporation | Magnetic head device for magneto-optical disc system and magnetic head driving circuit |
JP3188339B2 (ja) * | 1992-03-06 | 2001-07-16 | キヤノン株式会社 | 磁気ヘッド駆動装置および光磁気記録装置 |
US5287046A (en) * | 1992-05-13 | 1994-02-15 | International Business Machines Corporation | Method and system for actuator control for direct access storage devices |
JP2976697B2 (ja) * | 1992-05-29 | 1999-11-10 | 松下電器産業株式会社 | 光磁気ディスク用変調磁界発生装置 |
JP3098896B2 (ja) * | 1992-06-23 | 2000-10-16 | キヤノン株式会社 | 光磁気記録装置 |
JP2760237B2 (ja) * | 1992-10-07 | 1998-05-28 | 日本電気株式会社 | Hブリッジ回路 |
JP3179276B2 (ja) * | 1993-03-26 | 2001-06-25 | キヤノン株式会社 | 磁気ヘッド駆動方法および光磁気記録方法 |
JP2977710B2 (ja) * | 1993-10-26 | 1999-11-15 | ティーディーケイ株式会社 | 光磁気記録用変調磁界発生装置および光磁気記録装置 |
JP3351148B2 (ja) * | 1994-12-07 | 2002-11-25 | ソニー株式会社 | 記録装置、磁気ヘッド駆動装置 |
US6005733A (en) * | 1997-06-12 | 1999-12-21 | Vtc, Inc. | Preamplifier bias circuit for use in an AC coupled magnetoresistive read head amplifier |
JPH1186203A (ja) * | 1997-09-03 | 1999-03-30 | Canon Inc | 磁気ヘッド駆動装置及び光磁気記録装置 |
US6198335B1 (en) * | 1999-02-25 | 2001-03-06 | Stmicroelectronics, Inc. | Method and apparatus to drive the coil of a magnetic write head |
US6512645B1 (en) * | 1999-09-09 | 2003-01-28 | Stmicroelectronics Inc. | Circuit and method for writing to a memory disk with a boosted voltage |
US6252450B1 (en) * | 1999-09-09 | 2001-06-26 | Stmicroelectronics, Inc. | Circuit and method for writing to a memory disk |
JP2001084505A (ja) * | 1999-09-17 | 2001-03-30 | Fujitsu Ltd | 電流ドライバ回路 |
US6504666B1 (en) | 2000-08-30 | 2003-01-07 | Stmicroelectronics, Inc. | Write head driver circuit and method for writing to a memory disk |
US6512649B1 (en) | 2000-08-30 | 2003-01-28 | Stmicroelectronics, Inc. | Method for differentially writing to a memory disk |
US6970316B2 (en) * | 2001-11-09 | 2005-11-29 | Stmicroelectronics, Inc. | Write head driver circuit and method for writing to a memory disk |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58112476A (ja) * | 1981-12-25 | 1983-07-04 | Toyota Central Res & Dev Lab Inc | マルチレベルインバ−タ |
EP0160896B1 (en) * | 1984-05-10 | 1990-01-03 | Kabushiki Kaisha Toshiba | Current flow reversing circuit |
JPS6161626U (ko) * | 1984-09-28 | 1986-04-25 | ||
JPS6278704A (ja) * | 1985-10-02 | 1987-04-11 | Olympus Optical Co Ltd | 磁界発生装置 |
JPS6369005A (ja) * | 1986-09-09 | 1988-03-29 | Sharp Corp | 磁気記録回路 |
JPH0743805B2 (ja) * | 1986-10-07 | 1995-05-15 | ソニー株式会社 | 磁気ヘツド駆動回路 |
-
1987
- 1987-08-19 JP JP62204095A patent/JPH0833974B2/ja not_active Expired - Lifetime
-
1988
- 1988-08-18 EP EP88307645A patent/EP0304298B1/en not_active Expired - Lifetime
- 1988-08-18 KR KR1019880010488A patent/KR960013002B1/ko not_active IP Right Cessation
- 1988-08-18 DE DE8888307645T patent/DE3872982T2/de not_active Expired - Lifetime
- 1988-08-19 US US07/234,190 patent/US4937802A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0833974B2 (ja) | 1996-03-29 |
JPS6448207A (en) | 1989-02-22 |
DE3872982D1 (de) | 1992-08-27 |
KR960013002B1 (ko) | 1996-09-25 |
EP0304298A3 (en) | 1989-07-19 |
EP0304298A2 (en) | 1989-02-22 |
DE3872982T2 (de) | 1992-12-03 |
US4937802A (en) | 1990-06-26 |
EP0304298B1 (en) | 1992-07-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20070828 Year of fee payment: 12 |
|
LAPS | Lapse due to unpaid annual fee |