FR2335883A1 - Dispositif de commande de deplacements relatifs d'elements notamment pour acceder a une pile de disques souples - Google Patents
Dispositif de commande de deplacements relatifs d'elements notamment pour acceder a une pile de disques souplesInfo
- Publication number
- FR2335883A1 FR2335883A1 FR7634822A FR7634822A FR2335883A1 FR 2335883 A1 FR2335883 A1 FR 2335883A1 FR 7634822 A FR7634822 A FR 7634822A FR 7634822 A FR7634822 A FR 7634822A FR 2335883 A1 FR2335883 A1 FR 2335883A1
- Authority
- FR
- France
- Prior art keywords
- accessing
- stack
- elements
- control device
- movement control
- 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
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/22—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records
- G11B17/30—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records wherein the playing unit is moved according to the location of the selected record
-
- 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
- G05D3/14—Control of position or direction using feedback using an analogue comparing device
-
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Moving Of Heads (AREA)
- Automatic Disk Changers (AREA)
- Feedback Control In General (AREA)
- Control Of Position Or Direction (AREA)
- Actuator (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/642,646 US4191981A (en) | 1975-12-19 | 1975-12-19 | Record storage apparatus employing enhanced transducer positioning servomechanisms |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2335883A1 true FR2335883A1 (fr) | 1977-07-15 |
FR2335883B1 FR2335883B1 (fr) | 1978-12-29 |
Family
ID=24577442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7634822A Granted FR2335883A1 (fr) | 1975-12-19 | 1976-11-12 | Dispositif de commande de deplacements relatifs d'elements notamment pour acceder a une pile de disques souples |
Country Status (7)
Country | Link |
---|---|
US (1) | US4191981A (fr) |
JP (1) | JPS5816540B2 (fr) |
CA (1) | CA1074422A (fr) |
DE (1) | DE2645467C2 (fr) |
FR (1) | FR2335883A1 (fr) |
GB (1) | GB1541586A (fr) |
IT (1) | IT1074043B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2410333A1 (fr) * | 1977-11-28 | 1979-06-22 | Ibm | Dispositif d'emmagasinage de donnees a pile de disques flexibles |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4291349A (en) * | 1976-08-04 | 1981-09-22 | Burroughs Corporation | Diverter means for flexible disk pack and associated method |
US4330803A (en) * | 1979-08-06 | 1982-05-18 | International Business Machines Corporation | Disk accessing apparatus and method |
US4363056A (en) * | 1980-02-29 | 1982-12-07 | Digital Equipment Corporation | Disk housing for disk drive mass storage unit |
US5090002A (en) * | 1989-03-07 | 1992-02-18 | International Business Machines Corporation | Positioning systems employing velocity and position control loops with position control loop having an extended range |
JP3096334B2 (ja) * | 1991-11-08 | 2000-10-10 | パイオニア株式会社 | 位置検出装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3757192A (en) * | 1971-01-04 | 1973-09-04 | Toyoda Machine Works Ltd | Plural stepping motor numerical feed control device |
US3940794A (en) * | 1974-06-19 | 1976-02-24 | International Business Machines Corporation | Stacked flexible record disk storage apparatus having enhanced disk separation |
US3936880A (en) * | 1974-07-01 | 1976-02-03 | International Business Machines Corporation | Bistable deflection separation of flexible disks |
US4011590A (en) * | 1975-11-04 | 1977-03-08 | International Business Machines Corporation | Internal division actuation of ventilated floppy disk stack |
-
1975
- 1975-12-19 US US05/642,646 patent/US4191981A/en not_active Expired - Lifetime
-
1976
- 1976-10-08 DE DE2645467A patent/DE2645467C2/de not_active Expired
- 1976-11-03 GB GB45671/76A patent/GB1541586A/en not_active Expired
- 1976-11-09 IT IT29126/76A patent/IT1074043B/it active
- 1976-11-12 FR FR7634822A patent/FR2335883A1/fr active Granted
- 1976-11-19 JP JP51138591A patent/JPS5816540B2/ja not_active Expired
- 1976-12-20 CA CA268,239A patent/CA1074422A/fr not_active Expired
Non-Patent Citations (2)
Title |
---|
IBM TECHNICAL DISCLOSURE BULLETIN, VOL. 18, NO. 9, FEVRIER 1976, NEW-YORK. D.E.GRIFFITHS, L.D.RICHARDS, "RECORDS DISK SELECTION", PAGES 2775 A 2776 * |
IBM TECHNICAL DISCLOSURE BULLETIN, VOL. 19, NO. 1, JUIN 1976, NEW-YORK, B.W.MCGINNIS "DISK INTERFACE LOCATION", PAGES 194 A 196.) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2410333A1 (fr) * | 1977-11-28 | 1979-06-22 | Ibm | Dispositif d'emmagasinage de donnees a pile de disques flexibles |
Also Published As
Publication number | Publication date |
---|---|
FR2335883B1 (fr) | 1978-12-29 |
GB1541586A (en) | 1979-03-07 |
JPS5816540B2 (ja) | 1983-03-31 |
DE2645467A1 (de) | 1977-06-30 |
IT1074043B (it) | 1985-04-17 |
DE2645467C2 (de) | 1982-06-09 |
CA1074422A (fr) | 1980-03-25 |
US4191981A (en) | 1980-03-04 |
JPS5277711A (en) | 1977-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |