GB975979A - Improvements relating to data storage - Google Patents
Improvements relating to data storageInfo
- Publication number
- GB975979A GB975979A GB1959162A GB1959162A GB975979A GB 975979 A GB975979 A GB 975979A GB 1959162 A GB1959162 A GB 1959162A GB 1959162 A GB1959162 A GB 1959162A GB 975979 A GB975979 A GB 975979A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head
- disc
- track
- rotation
- data storage
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
-
- 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
- G11B5/52—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 simultaneous movement of head and record carrier, e.g. rotation of head
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
- Moving Of Heads (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
975,979. Disc record data storage apparatus. IBM WORLD TRADE LABORATORIES (GREAT BRITAIN) Ltd. Jan. 10, 1963 [May 22, 1962], No. 19591/62. Heading G5R. Arcuate tracks 64 Fig. 3 on a magnetic disc 12 are scanned by rotating the disc and a head 60 about axes 16, 44 respectively the head being maintained in constant orientation with its track on the axis 62 by gears 52, 54, 56 in the inverse direction to the relative rotation of transducer and disc along the track. The head is only operational for 120 degrees of each successive track circuit to avoid overlapping, and improved track packing-density may be achieved near the centre of the disc, Fig. 4 by varying the start of the operational sector. In an alternative embodiment, Fig. 5, the head is aligned, not by rotation about the axis 62 (Fig. 1) but by a parallel-linkage movement. The precession of the tracks by incremental rotation of a gear coupled to a differential 26, or by a stepping motor included between 24 and 38, is claimed in Specification 975,978. Multiple head-driving arrangements may be used. A single head may be precessed by making the drive ratios for head and disc slightly different from unity.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1959162A GB975979A (en) | 1962-05-22 | 1962-05-22 | Improvements relating to data storage |
GB1959062A GB975978A (en) | 1962-05-22 | 1962-05-22 | Improvements relating to data storage |
DE1963J0023741 DE1201407B (en) | 1962-05-22 | 1963-05-21 | Disk-shaped surface memory with a device for storing and reproducing data in circular tracks |
FR935647A FR1364807A (en) | 1962-05-22 | 1963-05-22 | Improvements in data storage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1959162A GB975979A (en) | 1962-05-22 | 1962-05-22 | Improvements relating to data storage |
GB1959062A GB975978A (en) | 1962-05-22 | 1962-05-22 | Improvements relating to data storage |
Publications (1)
Publication Number | Publication Date |
---|---|
GB975979A true GB975979A (en) | 1964-11-25 |
Family
ID=26254138
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1959062A Expired GB975978A (en) | 1962-05-22 | 1962-05-22 | Improvements relating to data storage |
GB1959162A Expired GB975979A (en) | 1962-05-22 | 1962-05-22 | Improvements relating to data storage |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1959062A Expired GB975978A (en) | 1962-05-22 | 1962-05-22 | Improvements relating to data storage |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1201407B (en) |
GB (2) | GB975978A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3500363A (en) * | 1966-07-11 | 1970-03-10 | Singer Co | Scanning apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1554641A (en) * | 1975-08-11 | 1979-10-24 | Casio Computer Co Ltd | Data-recording device |
US4280157A (en) * | 1979-06-01 | 1981-07-21 | New World Computer Company, Inc. | Actuator apparatus for magnetic disc recording systems |
-
1962
- 1962-05-22 GB GB1959062A patent/GB975978A/en not_active Expired
- 1962-05-22 GB GB1959162A patent/GB975979A/en not_active Expired
-
1963
- 1963-05-21 DE DE1963J0023741 patent/DE1201407B/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3500363A (en) * | 1966-07-11 | 1970-03-10 | Singer Co | Scanning apparatus |
Also Published As
Publication number | Publication date |
---|---|
GB975978A (en) | 1964-11-25 |
DE1201407B (en) | 1965-09-23 |
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