FR2283505B1 - - Google Patents
Info
- Publication number
- FR2283505B1 FR2283505B1 FR7521479A FR7521479A FR2283505B1 FR 2283505 B1 FR2283505 B1 FR 2283505B1 FR 7521479 A FR7521479 A FR 7521479A FR 7521479 A FR7521479 A FR 7521479A FR 2283505 B1 FR2283505 B1 FR 2283505B1
- Authority
- FR
- France
- 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
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/021—Selecting or spacing of record carriers for introducing the heads
-
- 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
- G11B5/825—Disk carriers flexible discs
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/501,738 US3931645A (en) | 1974-08-29 | 1974-08-29 | Flexible disk storage apparatus having disks of various radii for enhancing axial disk location |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2283505A1 FR2283505A1 (fr) | 1976-03-26 |
FR2283505B1 true FR2283505B1 (fr) | 1977-07-22 |
Family
ID=23994826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7521479A Granted FR2283505A1 (fr) | 1974-08-29 | 1975-07-03 | Dispositif de memoire a disques flexibles et procede d'acces a ces disques |
Country Status (5)
Country | Link |
---|---|
US (1) | US3931645A (fr) |
JP (1) | JPS5139106A (fr) |
DE (1) | DE2532654A1 (fr) |
FR (1) | FR2283505A1 (fr) |
GB (1) | GB1483565A (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2460849C2 (de) * | 1974-12-21 | 1982-12-09 | Ibm Deutschland Gmbh, 7000 Stuttgart | Zugriffsarm mit einem Magnetkopf für einen aus einem Stapel von flexiblen Magnetplatten bestehenden Magnetplattenspeicher |
US4071869A (en) * | 1976-06-01 | 1978-01-31 | International Business Machines Corporation | Assembling flexible disk record structures |
US4092681A (en) * | 1976-12-20 | 1978-05-30 | International Business Machines Corporation | Flexible disk file access mechanism |
US4148084A (en) * | 1977-07-05 | 1979-04-03 | Burroughs Corporation | Flexible disk pack, related storage apparatus having disks with circumferential tab segments and associated partition means |
US4348705A (en) * | 1978-11-07 | 1982-09-07 | Sperry Corporation | Random access flexible disk memory |
JPS5849941B2 (ja) * | 1978-11-07 | 1983-11-08 | スペリ− ランド コ−ポレ−シヨン | フレキシブルディスク記憶装置 |
US4393425A (en) * | 1981-03-30 | 1983-07-12 | Disctron, Inc. | Linear head actuator |
US4945432A (en) * | 1988-03-31 | 1990-07-31 | Hoya Electronics Corporation | Magnetic disk drive with brittle disks |
JPH10177759A (ja) * | 1996-12-16 | 1998-06-30 | Sony Corp | ディスク制御装置 |
US6900962B1 (en) * | 1997-09-05 | 2005-05-31 | Seagate Technology Llc | High performance standard configuration disc drive having smaller-than-standard discs |
US20070173183A1 (en) * | 2006-01-25 | 2007-07-26 | Keene Milford M | Cutting tool with integrated abrasive trimming elements |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3703713A (en) * | 1971-09-24 | 1972-11-21 | Univ Iowa State Res Found | Variable diameter disc pack with cooperating head |
US3852820A (en) * | 1973-07-02 | 1974-12-03 | Ibm | Stabilization of partitionable memory with flexible rotating discs |
-
1974
- 1974-08-29 US US05/501,738 patent/US3931645A/en not_active Expired - Lifetime
-
1975
- 1975-05-21 GB GB21856/75A patent/GB1483565A/en not_active Expired
- 1975-07-03 FR FR7521479A patent/FR2283505A1/fr active Granted
- 1975-07-22 DE DE19752532654 patent/DE2532654A1/de not_active Withdrawn
- 1975-07-31 JP JP50092646A patent/JPS5139106A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS5139106A (fr) | 1976-04-01 |
FR2283505A1 (fr) | 1976-03-26 |
GB1483565A (en) | 1977-08-24 |
DE2532654A1 (de) | 1976-03-11 |
US3931645A (en) | 1976-01-06 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |