GB975979A - Improvements relating to data storage - Google Patents

Improvements relating to data storage

Info

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
Application number
GB1959162A
Inventor
John Edward Meggitt
John Richard Herbert
John Joshua Sharp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IBM World Trade Laboratories GB Ltd
Original Assignee
IBM World Trade Laboratories GB Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IBM World Trade Laboratories GB Ltd filed Critical IBM World Trade Laboratories GB Ltd
Priority to GB1959162A priority Critical patent/GB975979A/en
Priority to GB1959062A priority patent/GB975978A/en
Priority to DE1963J0023741 priority patent/DE1201407B/en
Priority to FR935647A priority patent/FR1364807A/en
Publication of GB975979A publication Critical patent/GB975979A/en
Expired legal-status Critical Current

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.
GB1959162A 1962-05-22 1962-05-22 Improvements relating to data storage Expired GB975979A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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