GB1047727A - Improvements in or relating to magnetic storage devices having movable heads - Google Patents

Improvements in or relating to magnetic storage devices having movable heads

Info

Publication number
GB1047727A
GB1047727A GB3266764A GB3266764A GB1047727A GB 1047727 A GB1047727 A GB 1047727A GB 3266764 A GB3266764 A GB 3266764A GB 3266764 A GB3266764 A GB 3266764A GB 1047727 A GB1047727 A GB 1047727A
Authority
GB
United Kingdom
Prior art keywords
heads
discs
tracks
scanning
disc
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
GB3266764A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1047727A publication Critical patent/GB1047727A/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
    • 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
    • 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

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

1,047,727. Magnetic disc-record information stores. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 11, 1964 [Aug. 14, 1963], No. 32667/64. Heading G5R. A serial access magnetic store has, Figs. 2a, 2b, four banks of heads K1-K4 (Fig. 2a) scanning a stack of discs P, or a single bank of heads K1 (Fig. 2b) sequentially scanning partial tracks on four stacks of discs P1-P4, the heads and discs being simultaneously driven to produce successive partial trochoidal tracks and the heads being switched sequentially. In an alternative development, Fig. 5, two sets of heads K1,1 to K1,6 and K2,1 to K2,6 scan interleaved tracks, the head support also having heads (not shown) scanning a stationary record disc to provide head-switching information. The heads may be switched to record and read the tracks alternately and may be airspaced from the disc P1, Fig. 10, or foil discs P1, P2 may be urged by air-pressure towards rigidly mounted heads, Fig. 11. The choice of machine parameters and their relations to access time is discussed in some detail.
GB3266764A 1963-08-14 1964-08-11 Improvements in or relating to magnetic storage devices having movable heads Expired GB1047727A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP32397A DE1182298B (en) 1963-08-14 1963-08-14 Disk storage with rotating heads

Publications (1)

Publication Number Publication Date
GB1047727A true GB1047727A (en) 1966-11-09

Family

ID=7372738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3266764A Expired GB1047727A (en) 1963-08-14 1964-08-11 Improvements in or relating to magnetic storage devices having movable heads

Country Status (3)

Country Link
DE (1) DE1182298B (en)
GB (1) GB1047727A (en)
NL (1) NL6409204A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019205A (en) * 1974-09-16 1977-04-19 Information Storage Systems, Inc. Disc drive with rotary access mechanism

Also Published As

Publication number Publication date
DE1182298B (en) 1964-11-26
NL6409204A (en) 1965-02-15

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