ES8609788A1 - Un metodo de preparar medios de almacenamiento de datos parausarse subsecuentemente,grabando en ellos previamente sena- les de posicionamiento de transductores - Google Patents
Un metodo de preparar medios de almacenamiento de datos parausarse subsecuentemente,grabando en ellos previamente sena- les de posicionamiento de transductoresInfo
- Publication number
- ES8609788A1 ES8609788A1 ES541177A ES541177A ES8609788A1 ES 8609788 A1 ES8609788 A1 ES 8609788A1 ES 541177 A ES541177 A ES 541177A ES 541177 A ES541177 A ES 541177A ES 8609788 A1 ES8609788 A1 ES 8609788A1
- Authority
- ES
- Spain
- Prior art keywords
- bursts
- media
- tape
- servo
- recording
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 title abstract 3
- 239000003550 marker Substances 0.000 abstract 3
- 230000002463 transducing effect Effects 0.000 abstract 2
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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
- G11B21/103—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on tapes
-
- 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
- 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
-
- 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
- G11B5/584—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 tapes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
- G11B2220/95—Serpentine format, wherein a single track or group of tracks traverses the tape plural times from one end to the other
-
- 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
- G11B5/5534—Initialisation, calibration, e.g. cylinder "set-up"
- G11B5/5543—Initialisation, calibration, e.g. cylinder "set-up" servo-format therefor
-
- 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
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Optical Recording Or Reproduction (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
METODO DE INICIALIZACION DE UN MEDIO DE ALMACENAMIENTO MASIVO DE DATOS PARA USO SUCESIVO. SE BASA EN LA PREGRABACION DE SEÑALES DE POSICIONAMIENTO DEL TRANSFUCTOR EN EL MEDIO DE ALMACENAMIENTO DE DATOS. PARA ESTA PREGRABACION SE UTILIZA EL MISMO TIPO DE IMPULSOR DE MEDIO (CINTA O DISCO MAGNETICO) EMPLEADO PARA LA GRABACION DE DATOS. PRIMERAMENTE SE LOCALIZA EL BORDE EFECTIVO DEL CAMPO GRABABLE DE LA CINTA O DISCO, MEDIANTE UN PROCESO DE PRUEBA DE LECTURA/ESCRITURA. A CONTINUACION LA CINTA O EL DISCO REALIZA UNA SUCESION DE PASADAS POR DELANTE DE LA CABEZA TRANSDUCTORA, EN CADA UNA DE LAS CUALES ESTA INSCRIBE UNAS SEÑALES DE MARCADOR Y DE SERVO-POSICIONAMIENTO. DE APLICACION EN UNIDADES DE CINTA MAGNETICA PARA ALMACENAMIENTO MASIVO DE DATOS EN USOS INFORMATICOS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/589,007 US4586094A (en) | 1984-03-13 | 1984-03-13 | Method and apparatus for pre-recording tracking information on magnetic media |
Publications (2)
Publication Number | Publication Date |
---|---|
ES541177A0 ES541177A0 (es) | 1986-09-01 |
ES8609788A1 true ES8609788A1 (es) | 1986-09-01 |
Family
ID=24356216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES541177A Expired ES8609788A1 (es) | 1984-03-13 | 1985-03-12 | Un metodo de preparar medios de almacenamiento de datos parausarse subsecuentemente,grabando en ellos previamente sena- les de posicionamiento de transductores |
Country Status (11)
Country | Link |
---|---|
US (1) | US4586094A (es) |
EP (1) | EP0155817B1 (es) |
JP (1) | JPH0823927B2 (es) |
KR (1) | KR900009057B1 (es) |
AT (1) | ATE66311T1 (es) |
AU (1) | AU577092B2 (es) |
BR (1) | BR8501078A (es) |
CA (1) | CA1232066A (es) |
DE (1) | DE3583755D1 (es) |
ES (1) | ES8609788A1 (es) |
IE (1) | IE57447B1 (es) |
Families Citing this family (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4646175A (en) * | 1984-04-05 | 1987-02-24 | Irwin Magnetic Systems, Inc. | Method and apparatus for positioning transducers by digital conversion of analog-type signals |
JPS6236789A (ja) * | 1985-08-10 | 1987-02-17 | Alps Electric Co Ltd | サ−ボ制御装置 |
JPS6236482U (es) * | 1985-08-23 | 1987-03-04 | ||
JPS6252752A (ja) * | 1985-08-30 | 1987-03-07 | Sony Corp | 記録再生装置 |
US4796110A (en) * | 1986-02-18 | 1989-01-03 | Irwin Magnetic Systems, Inc. | System and method for encoding and storing digital information on magnetic tape |
US4802030A (en) * | 1986-06-25 | 1989-01-31 | Hewlett-Packard Company | Head-tape alignment apparatus with a tape edge find operation |
US4766508A (en) * | 1986-10-02 | 1988-08-23 | Eastman Kodak Company | Burst integral detecting embedded servo disk tracking system |
JPS63144454A (ja) * | 1986-12-08 | 1988-06-16 | Alps Electric Co Ltd | 情報記録デイスク |
US4916561A (en) * | 1988-09-20 | 1990-04-10 | Eastman Kodak Company | Hard copy printer having magnetic tape image storage |
JPH07101490B2 (ja) * | 1990-07-31 | 1995-11-01 | ティアツク株式会社 | 磁気テープの縁検知方法 |
US5375020A (en) * | 1990-09-26 | 1994-12-20 | Digital Equipment Corporation | Method and apparatus for writing or reading servo information |
US5268802A (en) * | 1991-05-28 | 1993-12-07 | Iomega Corporation | Reading non-standard tapes on tape drives |
US5229895A (en) * | 1991-06-07 | 1993-07-20 | Minnesota Mining And Manufacturing Company | Multi-track servo recording head assembly |
NO922249L (no) * | 1991-06-07 | 1992-12-08 | Minnesota Mining & Mfg | Flerspors servo-opptakshode, resulterende medium som inneholder forhaandsregistrert servospor samt servostyrt hodeposisjoneringssystem |
JPH0540926A (ja) * | 1991-12-06 | 1993-02-19 | Teac Corp | 磁気デイスクに対する信号記録方法 |
US5396376A (en) * | 1992-03-23 | 1995-03-07 | Conner Peripherals, Inc. | Multi-track embedded servo recording format and method |
JP2559974B2 (ja) * | 1992-07-06 | 1996-12-04 | インターナショナル・ビジネス・マシーンズ・コーポレイション | 直接アクセス記憶装置、ディスクドライブおよびトラックの位置を見い出し追従する方法 |
US5343341A (en) * | 1992-10-15 | 1994-08-30 | Tandberg Data A/S | Method for seeking the center of a recorded data track |
US5485322A (en) * | 1993-03-08 | 1996-01-16 | International Business Machines Corporation | Method and system for writing a clock track on a storage medium |
US6215606B1 (en) | 1993-03-08 | 2001-04-10 | International Business Machines Corporation | Method and system for determining the widest recording head of a recording device |
JP2644182B2 (ja) * | 1993-06-14 | 1997-08-25 | インターナショナル・ビジネス・マシーンズ・コーポレイション | 多重トラック磁気テープ装置を初期化する装置及び方法 |
US5432652A (en) * | 1993-06-14 | 1995-07-11 | International Business Machines Corporation | Servo and data format for magnetic tape having plural spaced-apart servo areas interleaved with data track areas having serpentine track scanning using any one of a plurality of number of concurrently accessed tracks |
US5539914A (en) * | 1993-06-14 | 1996-07-23 | International Business Machines Corporation | Method and system for preprocessing data block headers during access of data in a data storage system |
US5363252A (en) * | 1993-06-30 | 1994-11-08 | International Business Machines Corporation | Method and system for track skew tolerant acquistion burst sequence validation in a data storage system |
DE4419761A1 (de) * | 1993-10-13 | 1995-04-20 | Hewlett Packard Co | Magnetbandlaufwerk mit relativen longitudinalen Spuren |
DE69421072T2 (de) * | 1994-05-23 | 2000-04-20 | St Microelectronics Srl | Vorrichtung zur Verarbeitung von Servosignalen in einer in Parallelarchitektur ausgeführten Lesevorrichtung für Festplatten |
US5933290A (en) * | 1995-11-21 | 1999-08-03 | Onstream Inc. | Recording an information signal on a record carrier provided with tracking signals |
IL121459A (en) * | 1995-12-07 | 2001-10-31 | Koninkl Philips Electronics Nv | Placing a head relative to a large number of channels |
US5943180A (en) * | 1995-12-26 | 1999-08-24 | Mitsubishi Chemical Company | Information recording medium and recording/reproducing method for utilizing the same |
US5875064A (en) | 1996-07-09 | 1999-02-23 | International Business Machines Corporation | Method and system for accurate self-servowriting with normalization in a disk drive |
US5973869A (en) * | 1997-02-21 | 1999-10-26 | Storage Technology Corporation | Servo frame edge detection for tape servo pattern with synchronization field |
US5963400A (en) * | 1997-02-21 | 1999-10-05 | Storage Technology Corporation | Thin film tape head including split top pole |
US5920439A (en) * | 1997-02-21 | 1999-07-06 | Storage Technology Corporation | Method for determining longitudinal position on a magnetic tape having an embedded position count field |
US6023385A (en) * | 1997-02-21 | 2000-02-08 | Storage Technology Corporation | Tape servo pattern with enhanced synchronization properties |
US6075666A (en) * | 1997-02-21 | 2000-06-13 | Storage Technology Corporation | Tape servo pattern having an embedded position count field |
US5926339A (en) * | 1997-02-21 | 1999-07-20 | Storage Technology Corporation | Method for servo track identification |
US5898533A (en) * | 1997-02-21 | 1999-04-27 | Storage Technology Corporation | Tape servo pattern with embedded servo track number identification |
US6018429A (en) * | 1997-02-21 | 2000-01-25 | Storage Technology Corporation | Tape servo pattern with embedded servo track number identification |
US5946156A (en) * | 1997-03-04 | 1999-08-31 | Imation Corp. | Tape servo system and methods, write/read heads, and servo track configurations regarding same |
US6031698A (en) * | 1997-06-10 | 2000-02-29 | Iomega Corporation | Multiple partition tape cartridge detection means |
US6031682A (en) * | 1997-07-14 | 2000-02-29 | Iomega Corporation | Track trimming and orthogonal recording for cartridge tape |
EP0897179A3 (en) * | 1997-08-13 | 2000-02-23 | Hewlett-Packard Company | System for locating data on tape |
JP2002510113A (ja) * | 1998-03-30 | 2002-04-02 | ストーリッジ テクノロジー コーポレーション | サーボトラック識別方法 |
JP2002510111A (ja) * | 1998-03-30 | 2002-04-02 | イメイション・コーポレイション | トラック識別を備えるテープサーボパターン |
US6411459B1 (en) | 1999-02-22 | 2002-06-25 | Seagate Technology Llc | Advanced servo writing method for hard disc drives |
US7773340B2 (en) * | 1999-02-23 | 2010-08-10 | Advanced Research Corporation | Patterned magnetic recording head having a gap pattern with substantially elliptical or substantially diamond-shaped termination pattern |
US6269533B2 (en) * | 1999-02-23 | 2001-08-07 | Advanced Research Corporation | Method of making a patterned magnetic recording head |
US6278571B1 (en) * | 1999-05-19 | 2001-08-21 | International Business Machines Corporation | Adaptive servo gap detection for timing based servo |
US6330123B1 (en) | 1999-05-28 | 2001-12-11 | Imation Corp. | Head assembly having a single pass servo writer |
US6239939B1 (en) * | 1999-08-09 | 2001-05-29 | International Business Machines Corporation | Robust detection of data modulated into a timing based servo |
US6496328B1 (en) | 1999-12-30 | 2002-12-17 | Advanced Research Corporation | Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads |
US6754022B1 (en) | 2001-07-16 | 2004-06-22 | Imation Corp. | High-speed current driver |
US6781778B1 (en) | 2001-07-16 | 2004-08-24 | Imation Corp. | Time-based sectored servo data format |
US7072133B1 (en) | 2001-10-15 | 2006-07-04 | Imation Corp. | Servo mark verify head |
US7106544B2 (en) * | 2003-05-09 | 2006-09-12 | Advanced Research Corporation | Servo systems, servo heads, servo patterns for data storage especially for reading, writing, and recording in magnetic recording tape |
JP2005166163A (ja) * | 2003-12-02 | 2005-06-23 | Fuji Photo Film Co Ltd | 磁気テープ、磁気テープカートリッジ、磁気テープドライブ、及び磁気テープへのデータ記録方法 |
US8144424B2 (en) | 2003-12-19 | 2012-03-27 | Dugas Matthew P | Timing-based servo verify head and magnetic media made therewith |
US7283317B2 (en) * | 2004-01-30 | 2007-10-16 | Advanced Research Corporation | Apparatuses and methods for pre-erasing during manufacture of magnetic tape |
US20100321824A1 (en) * | 2004-02-18 | 2010-12-23 | Dugas Matthew P | Magnetic recording head having secondary sub-gaps |
WO2005109405A1 (en) * | 2004-05-04 | 2005-11-17 | Advanced Research Corporation | Intergrated thin film subgap/subpole structure for arbitrary gap pattern, magnetic recording heads and method of making the same |
US7206170B2 (en) | 2004-05-19 | 2007-04-17 | Imetion Corp. | Thin film servo head apparatus with canted servo gaps |
US7495859B2 (en) * | 2007-02-20 | 2009-02-24 | Imation Corp. | Interleaved servo pattern |
JP4427072B2 (ja) * | 2007-04-27 | 2010-03-03 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 書込みリトライ方法及び磁気テープ装置 |
WO2009094516A1 (en) * | 2008-01-23 | 2009-07-30 | Advanced Research Corporation | Recording heads with embedded tape guides and magnetic media made by such recording heads |
US8068301B2 (en) * | 2008-03-28 | 2011-11-29 | Advanced Research Corporation | Magnetic media formed by a thin film planar arbitrary gap pattern magnetic head |
WO2011014836A2 (en) * | 2009-07-31 | 2011-02-03 | Advanced Research Corporation | Erase drive systems and methods of erasure for tape data cartridge |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1533585A (en) * | 1976-02-24 | 1978-11-29 | Data Recording Instr Co | Magnetic tape data recording systems |
US4390917A (en) * | 1979-07-24 | 1983-06-28 | Olympus Optical Co., Ltd. | Device for detecting edge of magnetic tape for recording signals |
DE3112886A1 (de) * | 1981-03-31 | 1982-10-14 | Tandberg Data A/S, Oslo | Verfahren zum erkennen einer kante eines magnetischen mediums und vorrichtung zur druchfuehrung des verfahrens |
US4472750A (en) * | 1981-07-02 | 1984-09-18 | Irwin Magnetic Systems, Inc. | Data record with pre-recorded transducer positioning signals, and system for utilizing same |
US4414593A (en) * | 1981-10-08 | 1983-11-08 | Archive Corporation | Streaming cartridge tape drive |
US4414589A (en) * | 1981-12-14 | 1983-11-08 | Northern Telecom Inc. | Embedded servo track following system and method for writing servo tracks |
-
1984
- 1984-03-13 US US06/589,007 patent/US4586094A/en not_active Expired - Lifetime
-
1985
- 1985-02-27 CA CA000475320A patent/CA1232066A/en not_active Expired
- 1985-02-28 AU AU39247/85A patent/AU577092B2/en not_active Ceased
- 1985-03-11 BR BR8501078A patent/BR8501078A/pt unknown
- 1985-03-12 KR KR1019850001554A patent/KR900009057B1/ko not_active IP Right Cessation
- 1985-03-12 ES ES541177A patent/ES8609788A1/es not_active Expired
- 1985-03-12 IE IE632/85A patent/IE57447B1/en not_active IP Right Cessation
- 1985-03-13 AT AT85301749T patent/ATE66311T1/de active
- 1985-03-13 JP JP60050237A patent/JPH0823927B2/ja not_active Expired - Lifetime
- 1985-03-13 EP EP85301749A patent/EP0155817B1/en not_active Expired - Lifetime
- 1985-03-13 DE DE8585301749T patent/DE3583755D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
IE57447B1 (en) | 1992-09-09 |
BR8501078A (pt) | 1985-10-29 |
EP0155817A3 (en) | 1987-05-06 |
IE850632L (en) | 1985-09-13 |
KR850006948A (ko) | 1985-10-25 |
JPS60224117A (ja) | 1985-11-08 |
EP0155817B1 (en) | 1991-08-14 |
DE3583755D1 (de) | 1991-09-19 |
US4586094A (en) | 1986-04-29 |
ES541177A0 (es) | 1986-09-01 |
ATE66311T1 (de) | 1991-08-15 |
AU3924785A (en) | 1985-09-19 |
CA1232066A (en) | 1988-01-26 |
JPH0823927B2 (ja) | 1996-03-06 |
AU577092B2 (en) | 1988-09-15 |
EP0155817A2 (en) | 1985-09-25 |
KR900009057B1 (ko) | 1990-12-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19990301 |