BE640044A - - Google Patents
Info
- Publication number
- BE640044A BE640044A BE640044A BE640044A BE640044A BE 640044 A BE640044 A BE 640044A BE 640044 A BE640044 A BE 640044A BE 640044 A BE640044 A BE 640044A BE 640044 A BE640044 A BE 640044A
- Authority
- BE
- Belgium
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
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
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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
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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
- G11B5/48—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
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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
- G11B5/48—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
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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
- G11B5/48—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
- G11B5/5965—Embedded servo format
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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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
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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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
- G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements
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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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
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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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/716—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by two or more magnetic layers
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/06—Thin magnetic films, e.g. of one-domain structure characterised by the coupling or physical contact with connecting or interacting conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/923—Physical dimension
- Y10S428/924—Composite
- Y10S428/925—Relative dimension specified
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9265—Special properties
- Y10S428/928—Magnetic property
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9335—Product by special process
- Y10S428/934—Electrical process
- Y10S428/935—Electroplating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9335—Product by special process
- Y10S428/936—Chemical deposition, e.g. electroless plating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9335—Product by special process
- Y10S428/937—Sprayed metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12639—Adjacent, identical composition, components
- Y10T428/12646—Group VIII or IB metal-base
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12736—Al-base component
- Y10T428/1275—Next to Group VIII or IB metal-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12986—Adjacent functionally defined components
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Magnetic Record Carriers (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Digital Magnetic Recording (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US24119662A | 1962-11-30 | 1962-11-30 | |
US241337A US3219353A (en) | 1962-11-30 | 1962-11-30 | Magnetic recording medium |
US24557262A | 1962-12-18 | 1962-12-18 | |
US560348A US3328195A (en) | 1962-11-30 | 1966-06-24 | Magnetic recording medium with two storage layers for recording different signals |
US631103A US3404392A (en) | 1962-11-30 | 1967-04-14 | Magnetic track following servo system |
Publications (1)
Publication Number | Publication Date |
---|---|
BE640044A true BE640044A (ja) | 1964-03-16 |
Family
ID=27540144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE640044A BE640044A (ja) | 1962-11-30 | 1963-11-18 |
Country Status (6)
Country | Link |
---|---|
US (2) | US3328195A (ja) |
BE (1) | BE640044A (ja) |
CH (2) | CH416746A (ja) |
DE (2) | DE1280316B (ja) |
GB (1) | GB987357A (ja) |
NL (1) | NL301046A (ja) |
Families Citing this family (83)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE30974E (en) | 1962-08-16 | 1982-06-15 | Minnesota Mining And Manufacturing Company | Production of television signals from photographic disc recordings |
US3451793A (en) * | 1966-02-12 | 1969-06-24 | Toko Inc | Magnetic thin film wire with multiple laminated film coating |
US3512946A (en) * | 1967-04-17 | 1970-05-19 | Lash Mfg Inc | Composite material for shielding electrical and magnetic energy |
US3576553A (en) * | 1968-04-29 | 1971-04-27 | Ibm | Data transducer positioning servo utilizing compensation network and phase-displaced servo signal pairs of like frequency |
US3597750A (en) * | 1969-01-21 | 1971-08-03 | Information Storage Systems | Servo with agc for positioning a magnetic head |
JPS4814241B1 (ja) * | 1969-08-06 | 1973-05-04 | ||
US3593333A (en) * | 1969-11-26 | 1971-07-13 | Ibm | Position detection for a track following servo system |
US3614756A (en) * | 1970-01-21 | 1971-10-19 | Ibm | Magnetic record with servo track perpendicular to information track |
US3717407A (en) * | 1970-03-02 | 1973-02-20 | P Dimitracopoulos | Audiovisual slides and data-record cards |
US3691543A (en) * | 1971-02-08 | 1972-09-12 | Ibm | Positioning system including servo track configuration and associated demodulator |
US3737883A (en) * | 1971-08-18 | 1973-06-05 | Information Storage Systems | Linear positioning apparatus for memory disc pack drive mechanisms |
US3860450A (en) * | 1972-05-05 | 1975-01-14 | California Inst Of Techn | Method of forming magnetite thin film |
US3885490A (en) * | 1973-02-01 | 1975-05-27 | Cecil F Gullickson | Single track sight and sound musical instrument instruction device |
US3864754A (en) * | 1973-05-02 | 1975-02-04 | Minnesota Mining & Mfg | Magnetic record medium having permanent record pattern and information processing system using said medium |
US3872241A (en) * | 1973-07-12 | 1975-03-18 | Zenith Radio Corp | Video disc pickup with capacitive tracking |
GB1488483A (en) * | 1973-10-23 | 1977-10-12 | Emi Ltd | Credit cards and other security documents |
US4237189A (en) * | 1973-10-31 | 1980-12-02 | Robert J. Deffeyes | Polymodal magnetic recording media process for making and verifying the same and compositions useful therein |
US4281043A (en) * | 1973-10-31 | 1981-07-28 | Graham Magnetics, Inc. | Polymodal magnetic recording media and compositions useful therein |
US3864740A (en) * | 1973-11-05 | 1975-02-04 | Information Storage Systems | Track following servo system |
DE2530482C2 (de) * | 1974-07-15 | 1984-11-15 | N.V. Philips' Gloeilampenfabrieken, Eindhoven | Servosystem für ein Videoaufzeichnungsgerät |
US3956769A (en) * | 1974-08-12 | 1976-05-11 | Control Data Corporation | Recording system having coinciding servo and data tracks |
US4157576A (en) * | 1974-08-17 | 1979-06-05 | Basf Aktiengesellschaft | Track-dependent transducer position control in magneto-dynamic storage devices, and a magnetic recording medium to which this method is applicable |
US3959820A (en) * | 1974-09-16 | 1976-05-25 | Honeywell Information Systems, Inc. | System for increasing the number of data tracks in a magnetic recording system |
US4090662A (en) * | 1975-05-28 | 1978-05-23 | Minnesota Mining And Manufacturing Company | Tamperproof magnetically readable label |
JPS5843815B2 (ja) * | 1975-10-23 | 1983-09-29 | 富士写真フイルム株式会社 | ジキキロクテ−プ |
NL7600470A (nl) * | 1976-01-17 | 1977-07-19 | Philips Nv | Servosysteem voor het sturen van de positie van een magneetkop ten opzichte van een te volgen spoor. |
US4075672A (en) * | 1976-02-09 | 1978-02-21 | Graham Magnetics Incorporated | Magnetic recording members |
US4092682A (en) * | 1976-08-10 | 1978-05-30 | Sperry Rand Corporation | Cross coupled demodulator for generating a servo head position error signal |
US4092683A (en) * | 1976-08-10 | 1978-05-30 | Sperry Rand Corporation | Dual-mode demodulator for movement of a servo head |
US4209810A (en) * | 1977-06-16 | 1980-06-24 | Burroughs Corporation | Di-gap, variable-frequency recording technique and associated system |
JPS5891B2 (ja) * | 1977-09-30 | 1983-01-05 | 俊一 岩崎 | 磁気記録媒体 |
US4237506A (en) * | 1978-04-03 | 1980-12-02 | Graham Magnetics Inc. | Polymodal magnetic recording member |
US4188646A (en) * | 1978-05-30 | 1980-02-12 | Sperry Rand Corporation | Sectorized data path following servo system |
HU180803B (en) * | 1979-06-05 | 1983-04-29 | Budapesti Radiotechnikai Gyar | Method for recording band marker information on the floppy discs and device for fine adjusting position of the read head |
US4314289A (en) * | 1979-12-07 | 1982-02-02 | International Business Machines Corporation | Biased pulsed recording systems and methods |
US4313140A (en) * | 1979-12-07 | 1982-01-26 | International Business Machines Corporation | Buried control signal recording systems and method |
US4318141A (en) * | 1979-12-07 | 1982-03-02 | International Business Machines Corp. | Buried servo recording systems and methods |
DE2950174A1 (de) * | 1979-12-13 | 1981-06-19 | Basf Ag, 6700 Ludwigshafen | Verfahren und vorrichtung zur echtheitspruefung von aufzeichnungstraegern, die gegen faelschung zu sichern sind |
DE2950129A1 (de) | 1979-12-13 | 1981-06-19 | BASF Corp., New York, N.Y. | Verfahren und vorrichtung zur echtheitspruefung von aufzeichnungstraegern, die gegen faelschung zu sichern sind |
US4286296A (en) * | 1979-12-31 | 1981-08-25 | International Business Machines Corporation | Transducer positioning system |
JPS5733435A (en) * | 1980-07-31 | 1982-02-23 | Tdk Corp | Magnetic recording medium |
ATE20984T1 (de) * | 1980-08-05 | 1986-08-15 | Budapesti Radiotechnikai Gyar | Verfahren zur aufzeichnung von spurmarkierungsinformationen auf flexiblen magnetplatten und einrichtung zur feinpositionierung des lesekopfes. |
US4390911A (en) * | 1981-04-30 | 1983-06-28 | International Business Machines Corporation | Signal separation in magnetic recording using buried servo |
US4414589A (en) * | 1981-12-14 | 1983-11-08 | Northern Telecom Inc. | Embedded servo track following system and method for writing servo tracks |
US4536809A (en) * | 1982-05-10 | 1985-08-20 | Digital Equipment Corporation | Adaptive misposition correcting method and apparatus for magnetic disk servo system |
US4490756A (en) * | 1982-11-01 | 1984-12-25 | International Business Machines Corporation | Servo encodement and detection system using tetra-orthogonal servo pattern |
US4488188A (en) * | 1982-11-01 | 1984-12-11 | International Business Machines Corporation | Buried servo recording system using phase encoded servo pattern |
US4581663A (en) * | 1982-11-02 | 1986-04-08 | Nec Corporation | Buried servo recording system having dual transducers |
CA1234891A (en) * | 1983-10-20 | 1988-04-05 | 746278 Ontario Limited D/B/A I.D. Systems Canada | Security system label |
US4544904A (en) * | 1984-02-24 | 1985-10-01 | Kishore Tarachand | Composite magnet and magnetic circuit |
JPS61220159A (ja) * | 1985-03-27 | 1986-09-30 | Canon Inc | 記録再生装置 |
JPS6110376A (ja) * | 1985-05-15 | 1986-01-17 | Hitachi Ltd | 情報再生装置 |
US4743490A (en) * | 1986-02-24 | 1988-05-10 | Minnesota Mining And Manufacturing Company | Counterfeit-resistant magnetic recording tape |
US5070421A (en) * | 1987-09-25 | 1991-12-03 | Fuji Xerox Co., Ltd. | Magnetic disk system having tracking control using recorded information |
US4979051A (en) * | 1988-03-22 | 1990-12-18 | Eggebeen James A | Bimodal multi-track magnetic head |
US4975791A (en) * | 1988-03-22 | 1990-12-04 | Carlisle Memory Products Group Incorporated | Recording system having head transducers with controlled skew |
JPH035932A (ja) * | 1989-06-02 | 1991-01-11 | Nippon Hoso Kyokai <Nhk> | 記録媒体、記録再生装置および記録方式 |
US5223994A (en) * | 1989-10-02 | 1993-06-29 | Behr Michael I | System using superimposed, orthogonal buried servo signals |
US5132861A (en) * | 1989-10-02 | 1992-07-21 | Behr Michael I | Systems using superimposed, orthogonal buried servo signals |
US5321570A (en) * | 1989-10-02 | 1994-06-14 | Behr Michael I | Systems using superimposed, orthogonal buried servo signals |
US5568331A (en) * | 1989-10-27 | 1996-10-22 | Hitachi, Ltd. | Method of head positioning and magnetic recording disk drive using the same |
JPH06503673A (ja) * | 1991-10-10 | 1994-04-21 | イーストマン・コダック・カンパニー | テーパ付き変換キャップを有するサーボヘッドを備えたトラッキング制御装置 |
US5319502A (en) * | 1992-01-10 | 1994-06-07 | International Business Machines Corporation | System and method for employing buried servos within a magnetic recording medium |
US5966264A (en) * | 1997-08-07 | 1999-10-12 | International Business Machines Cororation | Two frequency servo PES pattern |
US6025970A (en) * | 1997-08-07 | 2000-02-15 | International Business Machines Corporation | Digital demodulation of a complementary two-frequency servo PES pattern |
JPH11126327A (ja) * | 1997-10-21 | 1999-05-11 | Kao Corp | 磁気テープ |
US7029726B1 (en) | 1999-07-27 | 2006-04-18 | Quantum Corporation | Method for forming a servo pattern on a magnetic tape |
GB2335785B (en) * | 1998-03-24 | 2002-09-18 | Quantum Corp | Multi-channel magnetic tape system having optical tracking servo |
US7153366B1 (en) | 1998-03-24 | 2006-12-26 | Quantum Corporation | Systems and method for forming a servo pattern on a magnetic tape |
WO2000049604A1 (fr) | 1999-02-16 | 2000-08-24 | Quantum Corporation | Procede d'ecriture de signaux d'asservissement sur une bande magnetique |
JP4286457B2 (ja) | 1999-02-17 | 2009-07-01 | クウォンタム・コーポレイション | 磁気テープへのサーボ信号書き込み方法 |
US6961200B2 (en) * | 1999-07-27 | 2005-11-01 | Quantum Corporation | Optical servo track identification on tape storage media |
US6558774B1 (en) | 1999-08-17 | 2003-05-06 | Quantum Corporation | Multiple-layer backcoating for magnetic tape |
US6940676B1 (en) | 2000-06-07 | 2005-09-06 | Quantum Corporation | Triple push-pull optical tracking system |
US6940681B2 (en) | 2001-08-20 | 2005-09-06 | Quantum Corporation | Optical to magnetic alignment in magnetic tape system |
US7023650B2 (en) | 2001-11-07 | 2006-04-04 | Quantum Corporation | Optical sensor to recording head alignment |
JP3776797B2 (ja) * | 2001-12-28 | 2006-05-17 | 株式会社東芝 | 磁気記録再生装置 |
US6980390B2 (en) | 2003-02-05 | 2005-12-27 | Quantum Corporation | Magnetic media with embedded optical servo tracks |
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-
1963
- 1963-11-18 BE BE640044A patent/BE640044A/xx unknown
- 1963-11-18 GB GB45363/63A patent/GB987357A/en not_active Expired
- 1963-11-20 DE DEJ24758A patent/DE1280316B/de not_active Withdrawn
- 1963-11-22 CH CH1435263A patent/CH416746A/de unknown
- 1963-11-27 NL NL301046D patent/NL301046A/xx unknown
- 1963-12-05 DE DE19631449381 patent/DE1449381B2/de active Pending
- 1963-12-13 CH CH1531563A patent/CH415752A/de unknown
-
1966
- 1966-06-24 US US560348A patent/US3328195A/en not_active Expired - Lifetime
-
1967
- 1967-04-14 US US631103A patent/US3404392A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE1449381A1 (de) | 1969-09-25 |
US3404392A (en) | 1968-10-01 |
DE1449381B2 (de) | 1972-03-16 |
US3328195A (en) | 1967-06-27 |
CH416746A (de) | 1966-07-15 |
DE1280316B (de) | 1968-10-17 |
CH415752A (de) | 1966-06-30 |
GB987357A (en) | 1965-03-24 |
NL301046A (ja) | 1965-09-27 |