JPS4920524B1 - - Google Patents
Info
- Publication number
- JPS4920524B1 JPS4920524B1 JP45115295A JP11529570A JPS4920524B1 JP S4920524 B1 JPS4920524 B1 JP S4920524B1 JP 45115295 A JP45115295 A JP 45115295A JP 11529570 A JP11529570 A JP 11529570A JP S4920524 B1 JPS4920524 B1 JP S4920524B1
- Authority
- JP
- Japan
- 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.)
- Pending
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
- G11B5/48—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
- G11B5/488—Disposition of heads
- G11B5/4886—Disposition of heads relative to rotating disc
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/20—Control of position or direction using feedback using a digital comparing device
-
- 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
- G11B5/48—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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US466670A | 1970-01-21 | 1970-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4920524B1 true JPS4920524B1 (ja) | 1974-05-25 |
Family
ID=21711899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP45115295A Pending JPS4920524B1 (ja) | 1970-01-21 | 1970-12-22 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3614756A (ja) |
| JP (1) | JPS4920524B1 (ja) |
| DE (1) | DE2101906C3 (ja) |
| FR (1) | FR2075040A5 (ja) |
| GB (1) | GB1277177A (ja) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412047B2 (ja) * | 1972-10-05 | 1979-05-19 | ||
| JPS5857024B2 (ja) * | 1973-08-31 | 1983-12-17 | 株式会社日立製作所 | 運動媒体への情報の記録・再生装置 |
| JPS5754872B2 (ja) * | 1973-11-02 | 1982-11-20 | ||
| JPS573151B2 (ja) * | 1973-11-05 | 1982-01-20 | ||
| JPS50126214A (ja) * | 1974-03-25 | 1975-10-03 | ||
| US3903545A (en) * | 1974-04-05 | 1975-09-02 | Control Data Corp | Track density increasing apparatus |
| 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 |
| US4094013A (en) * | 1975-05-22 | 1978-06-06 | U.S. Philips Corporation | Optical storage disk system with disk track guide sectors |
| DE2713194A1 (de) * | 1977-03-25 | 1978-10-05 | Basf Ag | System zur spurnachlaufsteuerung von magnetkoepfen |
| DE2748042C2 (de) * | 1977-10-26 | 1983-02-17 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur Auswertung von von Servospuren einer Magnetplatte eines Plattenspeichers gelieferten aus mehreren Schwingungen bestehenden Servosignalen |
| US4314289A (en) * | 1979-12-07 | 1982-02-02 | International Business Machines Corporation | Biased pulsed recording systems and methods |
| US4318141A (en) * | 1979-12-07 | 1982-03-02 | International Business Machines Corp. | Buried servo recording systems and methods |
| US4313140A (en) * | 1979-12-07 | 1982-01-26 | International Business Machines Corporation | Buried control signal recording systems and method |
| US4325087A (en) * | 1980-02-29 | 1982-04-13 | Minnesota Mining And Manufacturing Company | Magnetic marker for locating a splice within magnetic tape |
| US4414589A (en) * | 1981-12-14 | 1983-11-08 | Northern Telecom Inc. | Embedded servo track following system and method for writing servo tracks |
| US4581663A (en) * | 1982-11-02 | 1986-04-08 | Nec Corporation | Buried servo recording system having dual transducers |
| US4611249A (en) * | 1985-05-03 | 1986-09-09 | Eastman Kodak Company | Flux sensitive tracking |
| US4652945A (en) * | 1985-05-03 | 1987-03-24 | Eastman Kodak Company | Flux sensitive tracking |
| US5070421A (en) * | 1987-09-25 | 1991-12-03 | Fuji Xerox Co., Ltd. | Magnetic disk system having tracking control using recorded information |
| US5568331A (en) * | 1989-10-27 | 1996-10-22 | Hitachi, Ltd. | Method of head positioning and magnetic recording disk drive using the same |
| JP3384728B2 (ja) | 1997-11-12 | 2003-03-10 | 松下電器産業株式会社 | 磁気記録再生装置の製造方法及び磁気記録再生装置 |
| US6873482B1 (en) * | 1999-03-05 | 2005-03-29 | Yung-Chieh Hsieh | Magnetic recording drive with continuous magnetic servo system |
| US7511908B2 (en) * | 2005-11-18 | 2009-03-31 | International Business Machines Corporation | Magnetic-polarity encoded servo position information for magnetic-based storage media |
| US7679858B2 (en) * | 2005-11-18 | 2010-03-16 | International Business Machines Corporation | Method for differential timing based servo pattern for magnetic-based storage media |
| US7474486B2 (en) * | 2005-11-18 | 2009-01-06 | International Business Machines Corporation | Magnetic storage media |
| WO2015041600A1 (en) * | 2013-09-17 | 2015-03-26 | Agency For Science, Technology And Research | Magnetic medium and method of forming the same |
| US11474781B2 (en) * | 2020-06-10 | 2022-10-18 | Asianlink Technology Incorporation | Electronic book system using electromagnetic energy to detect page numbers |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3013123A (en) * | 1954-03-15 | 1961-12-12 | Armour Res Found | Electromagnetic playback system |
| BE640044A (ja) * | 1962-11-30 | 1964-03-16 | ||
| NL154607B (nl) * | 1966-03-09 | 1977-09-15 | Philips Nv | Magneetkopsysteem voorzien van twee magnetische controlecircuits voor een juiste positionering op een spoor. |
-
1970
- 1970-01-21 US US4666A patent/US3614756A/en not_active Expired - Lifetime
- 1970-12-08 FR FR7045290A patent/FR2075040A5/fr not_active Expired
- 1970-12-22 JP JP45115295A patent/JPS4920524B1/ja active Pending
-
1971
- 1971-01-11 GB GB0256/71A patent/GB1277177A/en not_active Expired
- 1971-01-15 DE DE2101906A patent/DE2101906C3/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2101906B2 (ja) | 1980-03-13 |
| DE2101906C3 (ja) | 1980-11-13 |
| DE2101906A1 (ja) | 1971-07-29 |
| US3614756A (en) | 1971-10-19 |
| FR2075040A5 (ja) | 1971-10-08 |
| GB1277177A (en) | 1972-06-07 |