CA944074A - Miniature disc dictation machine featuring absolute synchronized disc-transducer driving arrangement - Google Patents

Miniature disc dictation machine featuring absolute synchronized disc-transducer driving arrangement

Info

Publication number
CA944074A
CA944074A CA129,693A CA129693A CA944074A CA 944074 A CA944074 A CA 944074A CA 129693 A CA129693 A CA 129693A CA 944074 A CA944074 A CA 944074A
Authority
CA
Canada
Prior art keywords
disc
absolute
synchronized
driving arrangement
miniature
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
CA129,693A
Inventor
William L. Dollenmayer
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of CA944074A publication Critical patent/CA944074A/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
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
    • 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
    • G11B17/022—Positioning or locking of single discs
    • G11B17/025—Positioning or locking of single discs of discs which are stationary during transducing operation
    • 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
    • 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
    • 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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques
CA129,693A 1970-12-18 1971-12-09 Miniature disc dictation machine featuring absolute synchronized disc-transducer driving arrangement Expired CA944074A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9956870A 1970-12-18 1970-12-18
US9956770A 1970-12-18 1970-12-18

Publications (1)

Publication Number Publication Date
CA944074A true CA944074A (en) 1974-03-19

Family

ID=26796236

Family Applications (1)

Application Number Title Priority Date Filing Date
CA129,693A Expired CA944074A (en) 1970-12-18 1971-12-09 Miniature disc dictation machine featuring absolute synchronized disc-transducer driving arrangement

Country Status (5)

Country Link
AT (1) AT338010B (en)
CA (1) CA944074A (en)
CH (1) CH529413A (en)
DE (1) DE2162777B2 (en)
IT (1) IT943921B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4328575A (en) * 1980-05-09 1982-05-04 Rca Corporation Disc player having turntable height varying apparatus

Also Published As

Publication number Publication date
AT338010B (en) 1977-07-25
DE2162777A1 (en) 1972-06-29
CH529413A (en) 1972-10-15
DE2162777B2 (en) 1977-01-27
IT943921B (en) 1973-04-10
ATA11374A (en) 1976-11-15

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