KR950701441A - 자기 디스크 장치 및 그 제조방법(Magnetic disk apparatus and method of production thereof) - Google Patents

자기 디스크 장치 및 그 제조방법(Magnetic disk apparatus and method of production thereof)

Info

Publication number
KR950701441A
KR950701441A KR1019940703979A KR19940703979A KR950701441A KR 950701441 A KR950701441 A KR 950701441A KR 1019940703979 A KR1019940703979 A KR 1019940703979A KR 19940703979 A KR19940703979 A KR 19940703979A KR 950701441 A KR950701441 A KR 950701441A
Authority
KR
South Korea
Prior art keywords
mark
track
writing
magnetic
medium
Prior art date
Application number
KR1019940703979A
Other languages
English (en)
Other versions
KR100328372B1 (ko
Inventor
겐지로 와따나베
도루 다께다
사또루 세꼬
가즈시게 가와조에
다까야스 무또
오사무 모리따
노부히로 하야시
다께히사 이시다
히데아끼 이시오까
다까미찌 야마꼬시
Original Assignee
오오가 노리오
소니 가부시끼 가이샤
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 오오가 노리오, 소니 가부시끼 가이샤 filed Critical 오오가 노리오
Publication of KR950701441A publication Critical patent/KR950701441A/ko
Application granted granted Critical
Publication of KR100328372B1 publication Critical patent/KR100328372B1/ko

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
    • 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
    • G11B5/09—Digital recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B20/1252—Formatting, e.g. arrangement of data block or words on the record carriers on discs for discontinuous data, e.g. digital information signals, computer programme data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1486—Control/regulation of the pressure, e.g. the pressure inside the housing of a drive
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • 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
    • G11B5/553—Details
    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59605—Circuits
    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59627—Aligning for runout, eccentricity or offset compensation
    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10194—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using predistortion during writing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
    • G11B2020/1277—Control data, system data or management information, i.e. data used to access or process user data for managing gaps between two recordings, e.g. control data in linking areas, run-in or run-out fields, guard or buffer zones
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1291—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting serves a specific purpose
    • G11B2020/1292—Enhancement of the total storage capacity
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • 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
    • G11B5/00847—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks
    • G11B5/0086—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes on transverse tracks using cyclically driven heads providing segmented tracks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Digital Magnetic Recording (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

본 발명은 컴퓨터 시스템에서 하드 디스크 장치로 사용하기 알맞은 자기 디스크 장치에 관하여, 정보가 기입 또는 재생된 면위에 자성막이 형성된 디스크상매체와, 디스크상매체에 대해서 정보를 기입 또는 재생하는 자기헤드(20-31)(20-30)을 보유한 자기 디스크 장치에 있어서, 디스크상매체는 데이타 기입 영역(20-41D)와, 제어 신호 기입 영역(20-40)(20-41H)을 가지고, 데이타 기입 영역에는 데이타를 기입하기위한 트랙이 볼록부로 되어 있고, 동시에, 인접한 트랙을 구분하기 위하 보호 밴드(20-20)가 오목부로 되도록, 각인 형성되어, 제어 신호 기입 영역에는 자기 헤드를 트랙킹 제어하기 위한 트랙킹용 마크(20-12) (20-13), 트랙을 지정하는 트랙 번호 표시 마크(20-71), 트랙 번호(20-41b), (20-41b2) 및 1주기를 등간격으로 분할하는 클럭 마크(20-11)이 자기 헤드의 회동궤적(21-21)을 따라서 오목부 및 볼록부에 의해 각인형성되어 있다. 이러한 본 발명 자기 디스크 장치에 의하면, 트랙에 대해서 보호 밴드를 오목부로 각인형성하도록 했기 때문에, 누화(cross talk)경감을 위히서 보호 밴드를 넓게할 필요가 없어지고, 트랙 피치를 좁게하여, 기입 용량을 증대시키는 것일 가능하게 되었다.
또 트랙킹용 마크, 트랙 번호 표시 마크 또는 클럭 마크를 자기 헤드의 회동 궤적에 따라서 오목부 및 볼록부에 의해 각인형성하도록 했기 때문에, 트랙 피치를 좁게한 경우에 있어서도, 정확한 액세스(access)가 가능하게 된다.

Description

자기 디스크 장치 및 그 제조방법(Magnetic disk apparatus and method of production thereof)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 자기디스크 장치의 전체 구성을 나타낸 블럭(block)도,
제2도는 본 발명의 자기디스크 세보데이타 기입영역과 데이타 기입영역의 포맷(format)을 설명도.

Claims (20)

  1. 정보가 기입 또는 재생된 면위에 자성막이 형성된 디스크상매체와, 상기 디스크상매체에 대하여 정보를 기입 또는 재생하는 자기 헤드와, 상기 자기 헤드를 지지한 상태로 회동하고, 상기 디스크상매체의 소정의 반경위치로 상기 자기 헤드를 이동시키는 암(arm)을 보유한 자기 디스크 장치에 있어서, 상기 디스크상매체는 데이타 기입 영역과 제어 신호 기입 영역을 보유하고, 상기 데이타 기입 영역에는 동심원상 또는 나선상으로 트랙이 형성됨과 더불어, 상기 트랙은 데이타를 기입하기 위한 기입부분이 볼록부로되어 있고, 동시에, 인접한 상기 기입 부분을 구분하기 위한 보호 밴드가 오목부로 될 수 있도록 각인형성되어, 상기 제어 신호 기입 영역에는 상기 자기 헤드를 트랙킹 제어하기 위한 트랙킹용 마크, 상기 트랙을 특정하는 트랙번호 표시 마크, 및 1주기를 등간격으로 분할하는 클럭 마크가, 오목부 및 볼록부에 의해 각인 형성되어 있음과 동시에, 그중 적어도 하나는 상기 자기헤드의 회동 궤석을 따라서 형성되고, 상기 트랙킹용 마크, 트랙 번호 표시 마크 또는 클럭마크를 재생해서 얻어지는 신호에 대응해서, 상기 자기헤드에 의한 기입 또는 재생 동작이 제어되는 것을 특징으로 하는 자기 디스크 장치.
  2. 정보가 기입 또는 재생된 면위에 자성막이 형성된 디스크상매체와, 상기 디스크상매체에 대해서 정보를 기입 또는 재생하는 자기 헤드를 구비한 자기 디스크 장치에 있어서, 상기 디스크상매체는 데이타 기입 영역과 제어 신호 기입영역을 가지고, 상기 데이타 기입 영역에는 동심원상 또는 나선상으로 트랙이 형성됨과 더불어, 상기 트랙은 데이타를 기입하기 위한 기입부분이 볼록부로 되고, 동시에, 인접한 상기 기입부분을 구분하는 보호밴드가 오목부로 되도록 각인형성되고, 상기 제어 신호 기이 영역에는 적어도 상기 자기 헤드를 트랙킹 제어하기위한 트랙킹용 마크, 상기 트랙을 특정하는 트랙 번호 표시 마크, 및 1주기를 등간격으로 분할하는 클럭 마크가 오목부 및 볼록부에 의해 각인형성되어, 상기 자기 헤드가 상기 트랙킹용 마크, 트랙 번호 표시마크, 또는 클럭 마크를 재생해서 얻어진 신호로부터 상기 디스크상매체의 편심에 대응한 변화량을 계측하여, 그 계측 결과에 대응해서 상기 자기 헤드의 기입 또는 재생 동작이 제어되는 것을 특징으로 하는 자기 디스크 장치.
  3. 제1 또는 2항에 있어서, 상기 디스크상매체에 기입되어 있는 상기 트랙키용 마크, 트랙번호 표시마크 및 클럭 마크의 셋트 수는 1주기당 1000개 이하인 것을 특징으로 하는 자기 디스크 장치.
  4. 제1,2 또는 3항에 있어서, 상기 디스크매체의 상기 제어 신호 기입 영역의 1주기에 점유되는 비율은 40% 이하인 것을 특징으로 하는 자기 디스크 장치.
  5. 제1내지 4항중 어느 한 항에 있어서, 상기 디스크상매체는 수지 또는 유리의 기판으로 형성되어 있는 것을 특징으로 하는 자기 디스크 장치.
  6. 제1내지 5항중 어느 한 항에 있어서, 상기 자기 헤드는 데이타를 기입하는 기입 헤드와, 재생하는 재생헤드로 분리되어 있는 것을 특징으로 하는 자기 디스크 장치.
  7. 제6항에 있어서, 상기 트랙킹용 마크와 트랙킹 번호 표시 마크는 기입시에 쓰여지는 제1의 마크와, 재생시에 쓰여지는 제2의 마크를 보유하여, 상기 제2의 마크는 상기 트랙의 거의 중심을 따라서 배치되고, 상기 제1의 마크는 상기 트랙의 거의 중심에서 반경방향으로 소정의 거리만큼 어긋난 위치로 배치되어 있는 것을 특징으로 하는 자기 디스크 장치.
  8. 제7항에 있어서, 상기 트랙킹용 마크와 상기 트랙 번호 표시 마크는 동일의 기능을 가진 복수개의 마크에 의해 구성되어 있다는 것을 특징으로 하는 자기 디스크 장치.
  9. 제2항에 있어서, 상기 디스크 상매체의 편심에 대응하는 변화량은 상기 트랙킹용 마크 또는 트랙 번호 표시 마크로부터 계측된 위치 변화량, 또는 상기 클럭 마크로부터 계측된 시간 변화량인 것을 특징으로 하는 자기 디스크 장치.
  10. 제9항에 있어서, 상기 트랙킹용 마크, 트랙 번호 표시 마크 또는 클럭 마크를 재생하여 얻어진 신호로부터, 상기 자기헤드의 상기 트랙으로부터의 편심에 기인한 위치 어긋남을 보정하는 편심제어량을 연산하는 것을 특징으로 하는 자기 디스크 장치.
  11. 제10항에 있어서, 연산해서 얻어진 상기 편심제어량을 기억하고, 기억한 상기 편심 제어량을 재생하고, 트랙킹 제어신호에 가산해서 상기 자기 헤드를 트랙킹 제어하는 것을 특징으로 하는 자기 디스크 장치.
  12. 제9항에 있어서, 상기 클럭 마크에 동기해서 클럭 신호를 생성하고, 상기 클럭 마크로부터 계측된 시간 변화량을 기억하고, 기억한 상기 시간 변화량에 대응해서, 상기 클럭 신호의 시간축의 보정을 행하는 것을 특징으로 하는 자기 디스크 장치.
  13. 제1내지 12항중 어느 한 항에 있어서, 상기 트랙 번호 표시 마크를 재생해서 얻어진 신호는 비타비 복호되어 있는 시간에 있어서, 동시에 CRC 연산되는 것을 특징으로 하는 자기 디스크 장치.
  14. 제1내지 13항중 어느 한 항에 있서, 상기 클럭 마크를 재생해서 얻어진 신호로부터 클럭신호를 생성하고, 상기 클럭 신호에 대응해서 기입 데이타를 지연하고, 지연된 상기 기입 데이타를 상기 디스크상매체에 기입하는 것을 특징으로 하는 자기 디스크 장치.
  15. 제1내지 제14항중 어느 한 항에 있어서, 상기 트랙킹용 마크로부터 계측된 상기 자기 헤드와 트랙과의 상대저 위치 어긋난 량의 크기를 판정하고, 그 판정 결과에 대응해서 상기 디스크상매체의 기입 동작을 제어하는 것을 특징으로 하는 자기 디스크 장치.
  16. 제1내지 15항중 어느 한 항에 있어서, 상기 디스크상매체, 자기헤드 및 암은 위의 케이싱과 밑의 케이싱으로 된 밀폐된 케이스의 내부에 수용되고, 상기 위의 케이싱과 밑의 케이싱의 평면부에는 밀폐된 상기 케이스의 내부의 기압과 외부의 기입과의 차이를 조정하는 압력 조정용의 호흡 구멍만이 형성되어 있다는 것을 특징으로 하는 자기 디스크 장치.
  17. 제1내지 16항중 어느 한 항에 있어서, 상기 디스크상매체는 그 직경이, 거의 2.5인치인 것을 특징으로 하는 자기 디스크 장치.
  18. 제1내지 16항중 어느 한 항에 있어서, 상기 디스상매체는 그 직경이 거의 1.8인치인 것을 특징으로 하는 자기 디스크 장치.
  19. 제1내지 16항중 어느 한 항에 있어서, 상기 디스크상매체는 그 직경이, 거의 13인치인 것을 특징으로 하는 자기 디스크 장치.
  20. 정보가 기입 또는 재생된 면위에 자성막이 형성된 디스크 상매체와, 상기 디스크상매체에 대해서 정보를 기입 또는 재생하는 자기 헤드를 보유한 자기 디스크 장치의 제조 방법에 있어서, 상기 디스크상매체에 데이타 기입 영역과 제어 신호 기입 영역을 형성하고, 상기 데이타 기입 영역에는 동심원상 또는 나선상으로 트랙을 형성함과 동시에, 상기 트랙을 데이타를 기입하기 위한 기입 부분이 볼록부로 되어 있고, 동시에, 인접한 상기 기입부분을 구분하기 위한 보호 밴드가 오목부로 되도록 각인형성하고, 상기 제어 신호 기입 영역에는 적어도 상기 자기 헤드를 트랙킹 제어하기 위한 트랙킹용 마크, 상기 트랙을 특정하는 트랙 번호, 표시 마크 및 1주기를 등간격으로 분할하는 크럭 마크를 오목부 및 볼록부에 의해 각인형성하여, 상기 디스크상매체를 상기 트랙킹용 마크, 트랙번호 표시 마크, 및 클럭 마크가 형성, 기입된 후, 상기 자기 헤드와 함께 케이스에 대해서 구성된 것을 특징으로 하는 자기 디스크 장치의 제조 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940703979A 1993-03-04 1994-03-04 자기디스크장치 KR100328372B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP93-69218 1993-03-04
JP06921893A JP3344495B2 (ja) 1993-03-04 1993-03-04 磁気ディスク装置
PCT/JP1994/000350 WO1994020954A1 (en) 1993-03-04 1994-03-04 Magnetic disk apparatus and method of production thereof

Publications (2)

Publication Number Publication Date
KR950701441A true KR950701441A (ko) 1995-03-23
KR100328372B1 KR100328372B1 (ko) 2002-09-27

Family

ID=13396365

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940703979A KR100328372B1 (ko) 1993-03-04 1994-03-04 자기디스크장치

Country Status (8)

Country Link
US (2) US5907448A (ko)
EP (1) EP0645758B1 (ko)
JP (1) JP3344495B2 (ko)
KR (1) KR100328372B1 (ko)
CN (1) CN1103094C (ko)
DE (1) DE69415456T2 (ko)
MY (1) MY114361A (ko)
WO (1) WO1994020954A1 (ko)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3344495B2 (ja) * 1993-03-04 2002-11-11 ソニー株式会社 磁気ディスク装置
US5872676A (en) * 1996-01-02 1999-02-16 International Business Machines Corporation Method and apparatus for positioning a dual element magnetoresistive head using thermal signals
US5739972A (en) * 1996-01-02 1998-04-14 Ibm Method and apparatus for positioning a magnetoresistive head using thermal response to servo information on the record medium
JP2965062B2 (ja) * 1996-06-10 1999-10-18 富士通株式会社 ディスク装置及びディスク装置のヘッド位置制御方法
JPH10293975A (ja) * 1997-04-21 1998-11-04 Sony Corp 磁気ディスク装置
JPH10334607A (ja) * 1997-05-30 1998-12-18 Matsushita Electric Ind Co Ltd 磁気ディスク装置
JP2000090608A (ja) * 1998-09-16 2000-03-31 Sony Corp 磁気ディスク装置
BR0008208A (pt) 1999-02-12 2002-02-19 Gen Electric Meios de armazenamento de dados
JP2000251426A (ja) * 1999-02-23 2000-09-14 Matsushita Electric Ind Co Ltd 磁気ディスク装置及びマスター情報ディスク
US6798734B1 (en) 1999-07-26 2004-09-28 Tosoh Corporation Optical recording medium having address pits in the header region connecting with each other
US6498772B1 (en) * 1999-09-20 2002-12-24 Matsushita Electric Industrial Co., Ltd. Optical disc apparatus
US6628472B1 (en) * 1999-10-12 2003-09-30 Seagate Technoogy Llc Method and apparatus for feedforward cancellation using a phase lock loop
US6618219B1 (en) 1999-10-12 2003-09-09 Seagate Technology Llc Method and apparatus for feedforward cancellation using a peak detector
JP3850600B2 (ja) * 1999-10-15 2006-11-29 パイオニア株式会社 情報記録ディスクおよび情報記録装置
US7133239B1 (en) 2000-05-09 2006-11-07 Maxtor Corporation Methods and apparatuses for writing spiral servo patterns onto a disk surface
US7139144B1 (en) * 2000-08-04 2006-11-21 Maxtor Corporation Method and apparatus for writing spiral servo information by modifying existing servo track writing equipment
US7167333B1 (en) 2000-05-09 2007-01-23 Maxtor Corporation Method and apparatus for writing and reading servo information written in a spiral fashion
US7196862B1 (en) * 2000-09-11 2007-03-27 Maxtor Corporation Coherent phase data segment layout in data storage device
JP4517329B2 (ja) * 2001-07-31 2010-08-04 富士電機デバイステクノロジー株式会社 垂直磁気記録媒体
JPWO2003015083A1 (ja) * 2001-08-03 2004-12-02 松下電器産業株式会社 カードリーダ
US6882487B2 (en) * 2002-04-01 2005-04-19 Seagate Technology Llc Compensation for timing variation in disc drives employing servo tracking systems
WO2003090226A1 (en) * 2002-04-18 2003-10-30 Seagate Technology Llc Bi-directional servo track writing to minimize sidewall writing at high skew angles
US7567403B2 (en) * 2002-04-18 2009-07-28 Seagate Technology Llc Bi-directional servo track writing to minimize sidewall writing at high skew angles
WO2004013843A1 (en) * 2002-08-05 2004-02-12 Seagate Technology Llc Compensation for variation in timing skew in a disc drive data storage system
US7092184B2 (en) * 2002-08-05 2006-08-15 Seagate Technology Llc Monitoring a sensor's output using a target window that is based on a longitudinal offset's position-dependent indicator
US6999279B2 (en) * 2002-10-29 2006-02-14 Imation Corp. Perpendicular patterned magnetic media
US7196715B2 (en) * 2003-01-17 2007-03-27 Hewlett-Packard Development Company, L.P. Speed control using drive current profile
US7136253B1 (en) * 2003-06-02 2006-11-14 Maxtor Corporation Method and apparatus for providing multi-point position demodulation of a read head when using spiral-written servo information
US7623313B1 (en) 2003-06-02 2009-11-24 Maxtor Corporation Method and apparatus for performing a self-servo write operation in a disk drive
US6985316B1 (en) * 2003-06-02 2006-01-10 Maxtor Corporation Method and apparatus for performing seek operations in a disk drive having a disk surface with spiral servo information written thereon
US7019937B1 (en) * 2003-06-02 2006-03-28 Maxtor Corporation Method and apparatus for determining a transducer's reference position in a disk drive having a disk surface with spiral servo information written thereon
US7248427B1 (en) 2003-06-02 2007-07-24 Maxtor Corporagion Method and apparatus for reducing velocity errors when writing spiral servo information onto a disk surface
US7050251B2 (en) * 2003-06-25 2006-05-23 Imation Corp. Encoding techniques for patterned magnetic media
US7002768B2 (en) * 2003-10-09 2006-02-21 Hitachi Global Storage Technologies Netherlands B.V. Disk drive having reduced variation of disk surface lubricant layer thickness
US20080232213A1 (en) * 2004-01-26 2008-09-25 Koninklijke Philips Electronic, N.V. Feedback Control Loop for Bit Detection in an N-Dimensional Data Block
US7397621B2 (en) * 2004-06-14 2008-07-08 Kla-Tencor Technologies Corporation Servo pattern characterization on magnetic disks
US7333410B2 (en) * 2004-08-27 2008-02-19 Lsi Logic Corporation Method and apparatus for canceling repeatable run-out errors in positioning on recording medium
JP2006099932A (ja) * 2004-09-03 2006-04-13 Tdk Corp 磁気記録媒体、磁気記録再生装置及び磁気記録媒体製造用スタンパ
US7139145B1 (en) * 2004-09-23 2006-11-21 Western Digital Technologies, Inc. Cluster-based defect detection testing for disk drives
US7684152B2 (en) 2004-09-24 2010-03-23 Wd Media, Inc. Method of mitigating eccentricity in a disk drive with DTR media
US7324294B2 (en) * 2004-10-29 2008-01-29 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk drive with patterned media and circuit for generating timing pulses from the pattern
US7057836B1 (en) * 2004-11-19 2006-06-06 Western Digital Technologies, Inc. Disk drive servo controller utilizing an extended servo header
JP2006147104A (ja) * 2004-11-24 2006-06-08 Toshiba Corp サーボ情報書込み装置及びサーボ情報書込み方法
US7312939B2 (en) * 2005-02-25 2007-12-25 Hitachi Global Storage Technologies Netherlands Bv System, method, and apparatus for forming a patterned media disk and related disk drive architecture for head positioning
CN1828730B (zh) 2005-02-28 2010-10-13 Tdk股份有限公司 磁记录媒体、硬盘驱动器以及压模
JP3918003B2 (ja) * 2005-03-10 2007-05-23 Ｔｄｋ株式会社 磁気記録媒体、記録再生装置およびスタンパー
JP2006338738A (ja) * 2005-05-31 2006-12-14 Tdk Corp 磁気記録媒体、磁気記録再生装置、スタンパ、スタンパの製造方法及び磁気記録媒体の製造方法
JP4542953B2 (ja) 2005-06-10 2010-09-15 株式会社東芝 磁気ディスク媒体および磁気記録再生装置
JP4110165B2 (ja) * 2005-09-28 2008-07-02 株式会社東芝 磁気記録装置および位置決め補正方法
JP2007273042A (ja) * 2006-03-31 2007-10-18 Toshiba Corp 磁気記録媒体及び磁気記録再生装置
US7667911B2 (en) * 2006-06-12 2010-02-23 Broadcom Corporation Self servo writing disk controller and methods for use therewith
JP2008077795A (ja) * 2006-09-22 2008-04-03 Fujitsu Ltd パターンドメディアのクロック抽出方法、パターンドメディアのクロック抽出回路及びパターンドメディア
JP2008243322A (ja) * 2007-03-28 2008-10-09 Fujitsu Ltd パターンドメディアクロック生成方法、パターンドメディア及び情報記録再生装置
US7652839B2 (en) * 2007-04-26 2010-01-26 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk with identical servo patterns formed on each disk surface by single master template and disk drive using the disk
US7466506B1 (en) * 2007-06-19 2008-12-16 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk drive with head positioning servo control system for disk surfaces with identical servo patterns
JP2009087464A (ja) * 2007-09-28 2009-04-23 Toshiba Corp 光ディスク装置およびトラッキング制御方法
JP2009116944A (ja) * 2007-11-05 2009-05-28 Fujitsu Ltd クロック生成装置、磁気ディスク装置およびライト同期方法
JP4331236B2 (ja) 2007-12-27 2009-09-16 株式会社東芝 ディスク記憶装置
JP5328263B2 (ja) 2008-03-18 2013-10-30 昭和電工株式会社 磁気記録媒体の製造方法、磁気記録媒体、及び磁気記録再生装置
WO2009119829A1 (ja) * 2008-03-28 2009-10-01 昭和電工株式会社 垂直磁気記録媒体、垂直磁気記録媒体の製造方法、および磁気記録再生装置
JP4990866B2 (ja) 2008-10-08 2012-08-01 昭和電工株式会社 磁気記録媒体の製造方法および磁気記録再生装置
JP5199977B2 (ja) * 2009-10-21 2013-05-15 株式会社日立ハイテクノロジーズ ヘッド位置制御装置および磁気記録評価装置並びにヘッド位置制御方法
JP2011233199A (ja) 2010-04-27 2011-11-17 Showa Denko Kk 磁気記録媒体の製造方法、及び磁気記録再生装置
JP2012212489A (ja) * 2011-03-30 2012-11-01 Hitachi High-Technologies Corp 磁気ディスクまたは磁気ヘッドの検査装置及びその検査方法
US8896959B1 (en) * 2014-02-18 2014-11-25 Kabushiki Kaisha Toshiba Magnetic disk apparatus and data recording method
JP2019215943A (ja) * 2018-06-12 2019-12-19 株式会社東芝 磁気ディスク装置及びライト処理方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054438B1 (en) * 1980-12-17 1985-11-06 Matsushita Electric Industrial Co., Ltd. Optical disk having an index mark
EP0063935A1 (en) * 1981-04-24 1982-11-03 Iomega Corporation Method and apparatus for disk drive head positioning
US4656538A (en) * 1985-11-14 1987-04-07 Xebec Development Partners, Ltd. Disk drive control system
US4764914A (en) * 1987-09-11 1988-08-16 Eastman Kodak Company Least squares method and apparatus for determining track eccentricity of a disk
US4912585A (en) * 1988-04-28 1990-03-27 International Business Machines Corporation Discrete track thin film magnetic recording disk with embedded servo information
JPH02165479A (ja) * 1988-12-16 1990-06-26 Matsushita Electric Ind Co Ltd ヘッド位置決め装置
DE69032626T2 (de) * 1989-01-11 1999-05-20 Hitachi Ltd Verfahren zum magnetischen Aufzeichnen und Wiedergeben von Daten, magnetischer Auzeichnungsträger, sein Herstellungsverfahren und Gerät zur magnetischen Aufzeichnung
JP2863190B2 (ja) * 1989-03-24 1999-03-03 ソニー株式会社 磁気ディスクの作製方法
JP2893752B2 (ja) * 1989-09-29 1999-05-24 ソニー株式会社 ディスク状記録媒体
JP2831078B2 (ja) * 1990-02-01 1998-12-02 日本板硝子株式会社 磁気ディスク体及びその製造方法
JP2844810B2 (ja) * 1990-03-08 1999-01-13 ソニー株式会社 光磁気記録再生装置
US5257149A (en) * 1991-02-13 1993-10-26 Seagate Technology, Inc. Disc drive with offset address field
JP3063230B2 (ja) * 1991-05-31 2000-07-12 ソニー株式会社 書き換え可能なディスクおよびディスク装置
JPH05252119A (ja) * 1992-03-06 1993-09-28 Sanyo Electric Co Ltd サンプリング周波数変換装置
JPH05258311A (ja) * 1992-03-13 1993-10-08 Sony Corp ディスクおよびディスク記録装置
JP3254743B2 (ja) * 1992-08-17 2002-02-12 ソニー株式会社 位置決め信号の書き込み方法
US5341249A (en) * 1992-08-27 1994-08-23 Quantum Corporation Disk drive using PRML class IV sampling data detection with digital adaptive equalization
JP3344495B2 (ja) * 1993-03-04 2002-11-11 ソニー株式会社 磁気ディスク装置

Also Published As

Publication number Publication date
CN1103094C (zh) 2003-03-12
US5907448A (en) 1999-05-25
EP0645758B1 (en) 1998-12-23
EP0645758A4 (en) 1995-08-09
MY114361A (en) 2002-10-31
WO1994020954A1 (en) 1994-09-15
DE69415456T2 (de) 1999-05-12
KR100328372B1 (ko) 2002-09-27
US6144517A (en) 2000-11-07
DE69415456D1 (de) 1999-02-04
EP0645758A1 (en) 1995-03-29
CN1104022A (zh) 1995-06-21
JP3344495B2 (ja) 2002-11-11
JPH06259709A (ja) 1994-09-16

Similar Documents

Publication Publication Date Title
KR950701441A (ko) 자기 디스크 장치 및 그 제조방법(Magnetic disk apparatus and method of production thereof)
US5751671A (en) Information recording media and optical disk, disk having specific data so that a visible pattern of characters or graphics appear on a copy disk
AU664061B2 (en) Format for data-storing disk media wherein addressable track angular length is independent of disk revolutions
KR900015111A (ko) 변환기 헤드를 위치 설정하기 위한 서보 시스템 및 이의 설정 방법
JP2000276777A (ja) 光記録媒体
KR950015230A (ko) 디스크 저장 매체 및 디스크 저장 매체에 데이타를 기록하고 매체로부터 데이타를 재생하기 위한 장치
KR910014913A (ko) 레코딩 매체상에 데이타를 기록하는 방법
EP1569241A3 (en) Optical disk recorder for writing data with variable density
CA2475438A1 (en) Optical recording medium and playback method for the same
US5031168A (en) Apparatus and method for increasing storage capacity of recording media
KR890702188A (ko) 디스크 형상 기록매체 및 디스크 장치
KR100605412B1 (ko) 광기록매체및그제조방법
US7002895B1 (en) Optical disk having zone constant angular velocity wobble
US5677819A (en) Magnetic disk having improved servo area for protecting equal time interval characteristics and for preventing azimuth loss
EP0256110B1 (en) Apparatus and method for increasing storage capacity of recording media
US5504639A (en) Floating head magnetic disk recording and/or reproducing apparatus
JP3666193B2 (ja) 光ディスク再生装置
US20080123209A1 (en) Magnetic recording medium, recording/reproducing apparatus, and stamper
EP0491264B1 (en) Magnetic disc
EP0245874A3 (en) Information recording and reproducing apparatus
US20020003681A1 (en) Recording/reproducing apparatus with a recording medium between a floating and a dummy slider
JPH07296493A (ja) 情報記録媒体
JPH07296492A (ja) 情報記録媒体
JPH0437499B2 (ko)
TWI335575B (en) System and method for determining groove/land switching points of an optical disc

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20090123

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee