KR960025335A - 자기저항 헤드와 자기저항 헤드에서의 정전하 축적으로 인한 싱글 및 더블 비트 오류를 감소시키는 방법 - Google Patents
자기저항 헤드와 자기저항 헤드에서의 정전하 축적으로 인한 싱글 및 더블 비트 오류를 감소시키는 방법 Download PDFInfo
- Publication number
- KR960025335A KR960025335A KR1019950046639A KR19950046639A KR960025335A KR 960025335 A KR960025335 A KR 960025335A KR 1019950046639 A KR1019950046639 A KR 1019950046639A KR 19950046639 A KR19950046639 A KR 19950046639A KR 960025335 A KR960025335 A KR 960025335A
- Authority
- KR
- South Korea
- Prior art keywords
- head
- resistor
- magnetoresistive
- read
- high resistivity
- Prior art date
Links
- 230000003068 static effect Effects 0.000 title claims 10
- 238000009825 accumulation Methods 0.000 title claims 5
- 238000000034 method Methods 0.000 claims abstract 4
- 239000000696 magnetic material Substances 0.000 claims abstract 3
- 239000000463 material Substances 0.000 claims 7
- 230000004907 flux Effects 0.000 claims 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 4
- 239000010931 gold Substances 0.000 claims 4
- 229910052737 gold Inorganic materials 0.000 claims 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- UCHOFYCGAZVYGZ-UHFFFAOYSA-N gold lead Chemical compound [Au].[Pb] UCHOFYCGAZVYGZ-UHFFFAOYSA-N 0.000 claims 1
- 239000002923 metal particle Substances 0.000 claims 1
- 210000001364 upper extremity Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
-
- 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
- G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
- G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
- G11B5/00817—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on longitudinal tracks only, e.g. for serpentine format recording
- G11B5/00821—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on longitudinal tracks only, e.g. for serpentine format recording using stationary heads
- G11B5/00826—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on longitudinal tracks only, e.g. for serpentine format recording using stationary heads comprising a plurality of single poles or gaps or groups thereof operative at the same time
-
- 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
- G11B5/10—Structure or manufacture of housings or shields for heads
- G11B5/11—Shielding of head against electric or magnetic fields
-
- 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
- G11B5/40—Protective measures on heads, e.g. against excessive temperature
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
Claims (15)
- 외부 소스는 MR 헤드(magneto-resistive head) 상에 정전하 축적(static charge buildup)을 발생시키고, 상기 MR 헤드는 신호 리이드와 접지 리이드를 포함하는데, 상기 MR 헤드의 외부에 있고 상기 MR 헤드에 인접한 소스에 의해 제공되는 자속 신호(magnetic flux signals)를 감지하기 위한 자기저항(MR) 헤드에 있어서; 자속 신호를 판독하기 위한 하나 이상의 MR 판독 변환기와; 상기 자속 신호가 상기 MR 판독 변환기의 예정된 거리내에 올 때까지 자속 신호를 상기 하나 이상의 MR 판독 변환기로부터 차폐시키기 위한 하나 이상의 MR 시일드(MR shield)와; 상기 MR 헤드로부터 정전기 축적을 방지하기 위해 상기 하나 이상의 MR 시일드와 접지 신호 리드 사이에 커플링된 저항기를 포함하는 것을 특징으로 하는 자기저항 헤드.
- 제1항에 있어서, 상기 MR 판독 변환기는, 제1 및 제2단부를 가진 소프트 필름 바이어스 자석(soft film bias magnet)과; 각각 상기 제1 및 제2단부에 접속된 제1 및 제2 높은 비저항 영구자석을 포함하는 것을 특징으로 하는 자기저항 헤드.
- 제2항에 있어서, 상기 저항기는 높은 비저항 영구자석 재료를 포함하는 것을 특징으로 하는 자기저항 헤드.
- 제3항에 있어서, 상기 외부 소스에 인가하기 위해 자속 신호를 발생하기 위한 하나 이상의 기록 갭을 부가로 포함하는 것을 특징으로 하는 자기저항 헤드.
- 제4항에 있어서, 상기 저항기는 상기 제2 높은 비저항 영구자석과 상기 접지 리이드 사이에 커플링되고, 상기 저항기는 상기 제2 높은 비저항 영구자석과 유사한 재료로 되며, 상기 저항기는 상기 제2 높은 비저항 영구자석과 동일한 프로세싱 단계에서 가공되는 것을 특징으로 하는 자기저항 헤드.
- 제1항에 있어서, 상기 외부 소스는 자기 테이프인 것을 특징으로 하는 자기저항 헤드.
- MR 헤드 위를 통과하는 자기 테이프로부터 발생되는 정전하 축적을 접지 리이드로 분류(shunting)하므로써 상기 정전하 축적으로부터의 정전기 보호를 제공하며, 높은 비저항 자기 테이프에 데이타를 기록 및 판독하기 위한 자기저항(MR) 헤드에 있어서: 다수의 기록 변환기와; 각각 소프트 필름 바이어스(SFB) 자석과, 상기 SFB 자석을 샌드위치하고 있는(sandwiching) 제1 및 제2 높은 비저항 영구자석을 포함하는 다수의 MR 판독 변환기와; 상기 다수의 MR 판독 변환기의 각각의 MR 판독 변환기의 위와 아래에 있는 제1 및 제2시일드와; 각각의 MR 시일드를 접지 리이드에 커플링시키는 저항기를 포함하는 것을 특징으로 하는 자기저항 헤드.
- 제7항에 있어서, 각각의 저항기는 상기 제1 및 제2높은 비저항 자석과 유사한 재료인 것을 특징으로 하는 자기저항 헤드.
- 제7항에 있어서, 상기 제1 및 제2시일드는 자기 재료로 구성되는 것을 특징으로 하는 자기저항 헤드.
- 자기 테이프 드라이브에 있어서 MR 헤드는 다수의 MR 판독 변환기와 그에 대응되는 다수의 기록 변환기를 포함하는데, MR 헤드를 통과하는 자기 기억 매체로 인한 자기저항 헤드에서의 정전하 축적으로 인한 싱글 및 더블 비트 오류(single and double bit errors)를 감소시키는 방법에 있어서, 가) 각각의 MR 판독변환기를 제1 및 제2 MR 시일드로 차폐시키는 단계와; 나) 상기 다수의 MR 판독 변환기중의 각각의 MR 판독 변환기의 각각의 MR 시일드로부터 접지 리이드로 저항 경로(a resistive path)를 제공하는 단계와; 다) 상기 자기 기억 매체를 상기 MR 헤드를 지나서 통과시키는 단계와; 라) 상기 MR 헤드상의 정전하 축적을 각각의 MR 시일드로부터 상기 저항 경로를 통해 분류시키는 단계를 포함하는 것을 특징으로 하는 자기저항 헤드에서의 정전하 축적으로 인한 싱글 및 더블 비트 오류를 감소시키는 방법.
- 제10항에 있어서, 상기 MR 판독 변환기는 높은 비저항 영구자석 재료를 사이에 샌드위치된 소프트 필름 바이어스 재료로 구성되고, 또한 상지 저항 경로는 높은 비저항 영구자석 재료를 형성된 저항기에 의해 실현되는 것을 특징으로 하는 자기저항 헤드에서의 정전하 축적으로 인한 싱글 및 더블 비트 오류를 감소시키는 방법.
- 제10항에 있어서, 상기 MR 헤드가 통과하는 상기 자기 기억 매체는 금속 입자 자기 테이프인 것을 특징으로 하는 자기저항 헤드에서의 정전하 축적으로 인한 싱글 및 더블 비트 오류를 감소시키는 방법.
- 외부 소스에 의해 발생되고 MR 헤드상에 형성되는 정전하 축적으로부터 하나 이상의 MR 판독 센서를 위해 정전기 보호를 제공하며, 하나 이상의 MR 판독 센서와 하나 이상의 기록 갭을 가진 자기저항(MR) 헤드에 있어서; 상기 MR 센서 위에 위치된 제1 MR 시일드와; 상기 MR 센서 아래에 위치된 제2 MR 시일드와; 상기 MR 판독 센서의 제1 및 제2단부에 위치된 제1 및 제2영구자석과; 상기 제1 및 제2영구자석에 각각 커플링된 제1 및 제2얇은 금의 리이드와; 상기 제1 및 제2얇은 금의 리이드에 각각 커플링되고, 신호 및 접지 리이돌과 각각 접촉하기 위해 제공된 제 1 및 제2두꺼운 금의 신호 리이드와; 상기 제1 및 제2영구자석과 동일한 영구자석 재료를 포함하며; 상기 제1 MR 시일드와 상기 제2두꺼운 금의 리이드 사이에 커플링되고, 상기 MR 헤드상의 정전하 축적을 소산하기 위해 접지로의 경로를 제공하는 저항기를 포함하는 것을 특징으로 하는 자기저항 헤드.
- 제13항에 있어서, 상기 저항기는 실질적으로 상기 제1 및 제2두꺼운 금의 리이드 사이에 위치되는 것을 특징으로 하는 자기저항 헤드.
- 제13항에 있어서, 상기 외부 소스는 자기 테이프인 것을 특징으로 하는 자기저항 헤드.※ 참조사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US354,753 | 1994-12-08 | ||
US08/354,753 US5539598A (en) | 1994-12-08 | 1994-12-08 | Electrostatic protection for a shielded MR sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960025335A true KR960025335A (ko) | 1996-07-20 |
KR100227955B1 KR100227955B1 (ko) | 1999-11-01 |
Family
ID=23394768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950046639A KR100227955B1 (ko) | 1994-12-08 | 1995-12-05 | 자기 저항 헤드와 자기 저항 헤드에서의 정전하 축적으로 인한 싱글 및 더블 비트 오류를 감소시키는 방법 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5539598A (ko) |
EP (1) | EP0716412A3 (ko) |
JP (1) | JP3090602B2 (ko) |
KR (1) | KR100227955B1 (ko) |
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-
1994
- 1994-12-08 US US08/354,753 patent/US5539598A/en not_active Expired - Lifetime
-
1995
- 1995-11-27 JP JP07307208A patent/JP3090602B2/ja not_active Expired - Fee Related
- 1995-12-05 KR KR1019950046639A patent/KR100227955B1/ko not_active IP Right Cessation
- 1995-12-06 EP EP95308828A patent/EP0716412A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0716412A2 (en) | 1996-06-12 |
KR100227955B1 (ko) | 1999-11-01 |
EP0716412A3 (en) | 1997-05-28 |
JPH08221720A (ja) | 1996-08-30 |
US5539598A (en) | 1996-07-23 |
JP3090602B2 (ja) | 2000-09-25 |
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