SE8006591L - Sett och anordning for metning av ett les/skriv-huvuds position - Google Patents
Sett och anordning for metning av ett les/skriv-huvuds positionInfo
- Publication number
- SE8006591L SE8006591L SE8006591A SE8006591A SE8006591L SE 8006591 L SE8006591 L SE 8006591L SE 8006591 A SE8006591 A SE 8006591A SE 8006591 A SE8006591 A SE 8006591A SE 8006591 L SE8006591 L SE 8006591L
- Authority
- SE
- Sweden
- Prior art keywords
- pulses
- cells
- waveforms
- odd numbered
- derive
- Prior art date
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
- G11B5/58—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
- G11B5/59655—Sector, sample or burst servo format
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7928421A FR2470425A1 (fr) | 1979-11-19 | 1979-11-19 | Procede pour mesurer la position d'une tete de lecture-ecriture des informations d'un support par rapport a une position de reference de celui-ci et dispositif pour le mettre en oeuvre |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8006591L true SE8006591L (sv) | 1981-05-20 |
SE450606B SE450606B (sv) | 1987-07-06 |
Family
ID=9231817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8006591A SE450606B (sv) | 1979-11-19 | 1980-09-19 | Forfarande och anordning for metning av ett skriv/les-huvuds position relativt ett referenslege hos en informationsberare |
Country Status (8)
Country | Link |
---|---|
US (1) | US4400746A (sv) |
JP (1) | JPS5693148A (sv) |
DE (1) | DE3043650A1 (sv) |
FR (1) | FR2470425A1 (sv) |
GB (1) | GB2065335B (sv) |
IT (1) | IT1193992B (sv) |
NL (1) | NL8004180A (sv) |
SE (1) | SE450606B (sv) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983001859A1 (en) * | 1981-11-16 | 1983-05-26 | Dma Systems Corp | Track identification code recording method |
FR2557722B1 (fr) * | 1983-12-30 | 1986-04-11 | Bull Sa | Procede d'ecriture d'informations sur un support d'enregistrement |
US4608618A (en) * | 1984-10-25 | 1986-08-26 | Verbatim Corporation | Digital alignment diagnostic disk |
FR2593633B1 (fr) * | 1986-01-27 | 1988-04-29 | Sagem | Procede d'ecriture et de lecture d'une piste magnetique, notamment pour l'asservissement positionnel de tetes magnetiques; support magnetique comportant au moins une telle piste; procede d'asservissement positionnel de tetes magnetiques mettant en oeuvre de telles pistes |
FR2615995A1 (fr) * | 1987-05-27 | 1988-12-02 | Bull Sa | Mode d'ecriture d'informations sur un support d'enregistrement magnetique |
US5341255A (en) * | 1990-10-17 | 1994-08-23 | Seagate Technology, Inc. | Disc drive head positioning servo system with coherent adjacent track magnetic patterns |
JP1677395S (sv) | 2020-05-22 | 2021-01-25 | ||
JP1686932S (sv) | 2020-05-22 | 2021-05-31 | ||
JP1686862S (sv) | 2020-05-22 | 2021-05-31 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3479664A (en) * | 1965-12-28 | 1969-11-18 | Data Products Corp | Servo positioning system |
US3534344A (en) * | 1967-12-21 | 1970-10-13 | Ibm | Method and apparatus for recording and detecting information |
US3609562A (en) * | 1970-07-17 | 1971-09-28 | Ibm | Synchronized demodulator |
FR2346806A1 (fr) * | 1976-03-31 | 1977-10-28 | Honeywell Bull Soc Ind | Mode d'ecriture d'adresses sur un support d'enregist rement magnetique |
FR2365178A1 (fr) * | 1976-09-20 | 1978-04-14 | Cii Honeywell Bull | Procede de lecture d'adresses sur un support d'enregistrement magnetique et dispositif pour le mettre en oeuvre |
US4101942A (en) * | 1976-10-15 | 1978-07-18 | Xerox Corporation | Track following servo system and track following code |
US4130844A (en) * | 1976-10-26 | 1978-12-19 | Xerox Corporation | Method and means for tracking magnetic tracks |
US4208679A (en) * | 1978-02-28 | 1980-06-17 | Digital Equipment Corporation | Transducer positioning system for rotating disk drive units |
JPS54119215A (en) * | 1978-03-09 | 1979-09-17 | Toshiba Corp | Magnetic disc apparatus |
FR2439435A1 (fr) * | 1978-10-19 | 1980-05-16 | Cii Honeywell Bull | Mode d'ecriture d'informations sur un support d'enregistrement magnetique |
-
1979
- 1979-11-19 FR FR7928421A patent/FR2470425A1/fr active Granted
-
1980
- 1980-07-21 NL NL8004180A patent/NL8004180A/nl not_active Application Discontinuation
- 1980-09-19 SE SE8006591A patent/SE450606B/sv not_active IP Right Cessation
- 1980-10-22 GB GB8034074A patent/GB2065335B/en not_active Expired
- 1980-11-10 US US06/205,863 patent/US4400746A/en not_active Expired - Lifetime
- 1980-11-11 IT IT25876/80A patent/IT1193992B/it active
- 1980-11-17 JP JP16093780A patent/JPS5693148A/ja active Granted
- 1980-11-19 DE DE19803043650 patent/DE3043650A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
IT8025876A0 (it) | 1980-11-11 |
DE3043650C2 (sv) | 1988-08-18 |
IT1193992B (it) | 1988-08-31 |
GB2065335B (en) | 1983-09-01 |
DE3043650A1 (de) | 1981-09-17 |
FR2470425A1 (fr) | 1981-05-29 |
GB2065335A (en) | 1981-06-24 |
JPS6232551B2 (sv) | 1987-07-15 |
US4400746A (en) | 1983-08-23 |
JPS5693148A (en) | 1981-07-28 |
NL8004180A (nl) | 1981-06-16 |
FR2470425B1 (sv) | 1983-08-26 |
SE450606B (sv) | 1987-07-06 |
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NUG | Patent has lapsed |
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