FR2308163A1 - Memoire magnetique a disques flexibles - Google Patents
Memoire magnetique a disques flexiblesInfo
- Publication number
- FR2308163A1 FR2308163A1 FR7605922A FR7605922A FR2308163A1 FR 2308163 A1 FR2308163 A1 FR 2308163A1 FR 7605922 A FR7605922 A FR 7605922A FR 7605922 A FR7605922 A FR 7605922A FR 2308163 A1 FR2308163 A1 FR 2308163A1
- Authority
- FR
- France
- Prior art keywords
- magnetic memory
- flexible discs
- discs
- flexible
- magnetic
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/16—Digital recording or reproducing using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information 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
- G11B5/54—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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Automatic Disk Changers (AREA)
- Moving Of Heads (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/568,075 US3974524A (en) | 1975-04-14 | 1975-04-14 | Magnetic storage apparatus employing flexible record disks with peripheral disk-identification means |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2308163A1 true FR2308163A1 (fr) | 1976-11-12 |
FR2308163B1 FR2308163B1 (fr) | 1979-08-31 |
Family
ID=24269836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7605922A Granted FR2308163A1 (fr) | 1975-04-14 | 1976-02-25 | Memoire magnetique a disques flexibles |
Country Status (5)
Country | Link |
---|---|
US (1) | US3974524A (fr) |
JP (1) | JPS51126807A (fr) |
DE (1) | DE2615245A1 (fr) |
FR (1) | FR2308163A1 (fr) |
IT (1) | IT1056749B (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4092681A (en) * | 1976-12-20 | 1978-05-30 | International Business Machines Corporation | Flexible disk file access mechanism |
US4146911A (en) * | 1977-12-23 | 1979-03-27 | Burroughs Corporation | Head spacing control |
US4646194A (en) * | 1985-01-13 | 1987-02-24 | Copal Company Limited | PG yoke position detecting apparatus |
KR100515719B1 (ko) | 1998-02-20 | 2005-11-25 | 삼성전자주식회사 | 서보트랙라이터를 이용한 공정 관리 방법 |
US6421199B1 (en) * | 1998-09-25 | 2002-07-16 | Seagate Technology Llc | Method and apparatus for minimizing once per revolution positional errors in a disc drive |
US6414814B1 (en) * | 1998-09-25 | 2002-07-02 | Seagate Technology Llc | Method and apparatus for minimizing once per revolution positional errors in single disc servo track writing |
US9548871B2 (en) * | 2013-03-07 | 2017-01-17 | General Electric Company | Systems and methods for master arbitration |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2195533B1 (fr) * | 1972-08-11 | 1974-10-25 | Uniroyal | |
JPS528168B2 (fr) * | 1973-06-08 | 1977-03-07 | ||
US3838462A (en) * | 1973-07-02 | 1974-09-24 | Ibm | Partitionable disc memory with flexible discs and conformally suspended head |
-
1975
- 1975-04-14 US US05/568,075 patent/US3974524A/en not_active Expired - Lifetime
-
1976
- 1976-02-25 FR FR7605922A patent/FR2308163A1/fr active Granted
- 1976-02-27 IT IT20660/76A patent/IT1056749B/it active
- 1976-03-26 JP JP51032717A patent/JPS51126807A/ja active Pending
- 1976-04-08 DE DE19762615245 patent/DE2615245A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
REVUE US "IBM TECHNICAL DISCLOSURE BULLETIN" VOLUME 18, NO 2, JUILLET 1975. ARTICLE "DISK EDGE DETECTION AND EVALUATION" PAGES 316-317 VAN WINKLE ) * |
Also Published As
Publication number | Publication date |
---|---|
JPS51126807A (en) | 1976-11-05 |
DE2615245A1 (de) | 1976-10-28 |
US3974524A (en) | 1976-08-10 |
IT1056749B (it) | 1982-02-20 |
FR2308163B1 (fr) | 1979-08-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |