BE815618A - Dispositif d'acces pour memoire a disques souples rotatifs - Google Patents

Dispositif d'acces pour memoire a disques souples rotatifs

Info

Publication number
BE815618A
BE815618A BE144819A BE144819A BE815618A BE 815618 A BE815618 A BE 815618A BE 144819 A BE144819 A BE 144819A BE 144819 A BE144819 A BE 144819A BE 815618 A BE815618 A BE 815618A
Authority
BE
Belgium
Prior art keywords
access device
memory access
disc memory
soft disc
rotary soft
Prior art date
Application number
BE144819A
Other languages
English (en)
French (fr)
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
Priority claimed from US00375986A external-priority patent/US3810243A/en
Priority claimed from US00375989A external-priority patent/US3838462A/en
Application filed filed Critical
Publication of BE815618A publication Critical patent/BE815618A/xx

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
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements
    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
BE144819A 1973-07-02 1974-05-28 Dispositif d'acces pour memoire a disques souples rotatifs BE815618A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00375986A US3810243A (en) 1973-07-02 1973-07-02 Selectively tensioned transducer assembly for operation in compliant relation to individual memory discs of a partitionable aggregate of rotating flexible discs
US00375989A US3838462A (en) 1973-07-02 1973-07-02 Partitionable disc memory with flexible discs and conformally suspended head

Publications (1)

Publication Number Publication Date
BE815618A true BE815618A (fr) 1974-09-16

Family

ID=27007267

Family Applications (1)

Application Number Title Priority Date Filing Date
BE144819A BE815618A (fr) 1973-07-02 1974-05-28 Dispositif d'acces pour memoire a disques souples rotatifs

Country Status (3)

Country Link
BE (1) BE815618A (enrdf_load_stackoverflow)
CH (1) CH570672A5 (enrdf_load_stackoverflow)
FR (1) FR2236244B1 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
CH570672A5 (enrdf_load_stackoverflow) 1975-12-15
FR2236244A1 (enrdf_load_stackoverflow) 1975-01-31
FR2236244B1 (enrdf_load_stackoverflow) 1980-01-04

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: INTERNATIONAL BUSINESS MACHINES CORP.

Effective date: 19850528