JPS5710449B2 - - Google Patents
Info
- Publication number
- JPS5710449B2 JPS5710449B2 JP847373A JP847373A JPS5710449B2 JP S5710449 B2 JPS5710449 B2 JP S5710449B2 JP 847373 A JP847373 A JP 847373A JP 847373 A JP847373 A JP 847373A JP S5710449 B2 JPS5710449 B2 JP S5710449B2
- 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.)
- Expired
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
- G11B5/54—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
-
- 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
- G11B21/106—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 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
- G11B5/5552—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means
- G11B5/5556—Track change, selection or acquisition by displacement of the head across disk tracks using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means with track following after a "seek"
-
- 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
- G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Control Of Position Or Direction (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB260272A GB1369155A (en) | 1972-01-19 | 1972-01-19 | Servo systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4882281A JPS4882281A (US06272168-20010807-M00014.png) | 1973-11-02 |
| JPS5710449B2 true JPS5710449B2 (US06272168-20010807-M00014.png) | 1982-02-26 |
Family
ID=9742463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP847373A Expired JPS5710449B2 (US06272168-20010807-M00014.png) | 1972-01-19 | 1973-01-19 |
Country Status (5)
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1396834A (en) * | 1973-01-31 | 1975-06-04 | Ibm | Data storage apparatus |
| US3893180A (en) * | 1974-01-02 | 1975-07-01 | Honeywell Inf Systems | Transducer positioning system |
| GB1439551A (en) * | 1974-03-15 | 1976-06-16 | Burroughs Corp | Data recording apparatus |
| 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 |
| DE2615838C2 (de) * | 1976-04-10 | 1985-02-07 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Vorrichtung zur Positionsregelung eines Schreib-Lesekopfes für Datenträger mit einer Magnetspeicherschicht |
| GB1549440A (en) * | 1976-07-06 | 1979-08-08 | Data Recording Instr Co | Magnetic storage devices |
| US4096534A (en) * | 1977-04-12 | 1978-06-20 | International Business Machines Corporation | Track accessing circuitry for a disk file with switchable filter |
| US4418368A (en) * | 1981-03-31 | 1983-11-29 | Disctron, Inc. | Method and apparatus for positioning a transducer using embedded servo track encoding |
| WO1983001531A1 (en) * | 1981-10-22 | 1983-04-28 | Peripherals Data | Method and apparatus for positioning a transducer using embedded servo track encoding and microprocessor control |
| US4414589A (en) * | 1981-12-14 | 1983-11-08 | Northern Telecom Inc. | Embedded servo track following system and method for writing servo tracks |
| US5424881A (en) * | 1993-02-01 | 1995-06-13 | Cirrus Logic, Inc. | Synchronous read channel |
| US5488525A (en) * | 1994-08-18 | 1996-01-30 | International Business Machines Corporation | Decoupled magnetic head assembly for quarter-inch tape |
| US7002761B1 (en) * | 2003-03-27 | 2006-02-21 | Marvell International Ltd. | Demodulation compensation for spiral servo tracks in hard disk drives |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL288467A (US06272168-20010807-M00014.png) * | 1962-02-05 | |||
| US3427606A (en) * | 1966-03-02 | 1969-02-11 | Ibm | Memory system |
| US3593333A (en) * | 1969-11-26 | 1971-07-13 | Ibm | Position detection for a track following servo system |
-
1972
- 1972-01-19 GB GB260272A patent/GB1369155A/en not_active Expired
-
1973
- 1973-01-13 DE DE2301588A patent/DE2301588C2/de not_active Expired
- 1973-01-17 US US00324544A patent/US3821804A/en not_active Expired - Lifetime
- 1973-01-18 NL NL7300723.A patent/NL162227C/xx not_active IP Right Cessation
- 1973-01-19 JP JP847373A patent/JPS5710449B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7300723A (US06272168-20010807-M00014.png) | 1973-07-23 |
| NL162227B (nl) | 1979-11-15 |
| JPS4882281A (US06272168-20010807-M00014.png) | 1973-11-02 |
| DE2301588A1 (de) | 1973-07-26 |
| DE2301588C2 (de) | 1983-07-28 |
| GB1369155A (en) | 1974-10-02 |
| US3821804A (en) | 1974-06-28 |
| NL162227C (nl) | 1980-04-15 |
