GB783198A - Improvements in or relating to apparatus for the reproduction of multi-track magnetic records - Google Patents

Improvements in or relating to apparatus for the reproduction of multi-track magnetic records

Info

Publication number
GB783198A
GB783198A GB408655A GB408655A GB783198A GB 783198 A GB783198 A GB 783198A GB 408655 A GB408655 A GB 408655A GB 408655 A GB408655 A GB 408655A GB 783198 A GB783198 A GB 783198A
Authority
GB
United Kingdom
Prior art keywords
reproduction
track
magnetic
transducer
relating
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
GB408655A
Inventor
Claude Langdon Richards
William David Brunt
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB408655A priority Critical patent/GB783198A/en
Publication of GB783198A publication Critical patent/GB783198A/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
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

783,198. Magnetic reproducing apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Jan. 25, 1956 [Feb. 11, 1955], No. 4086/55. Drawings to Specification. Class 40 (2). In an apparatus employing two or more closely spaced magnetic transducers for reproducing individual tracks one at a time, the reproduction of spurious signals from a neighbouring track is minimized by reducing the effective reluctance of the transducer in contact with such track to enable said transducer to act as a magnetic keeper. The reluctance reducing means may comprise a negative inductive inpedance connected across the winding and may be provided by an electronic amplifier having a positive feed-back path including a positive impedance.
GB408655A 1955-02-11 1955-02-11 Improvements in or relating to apparatus for the reproduction of multi-track magnetic records Expired GB783198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB408655A GB783198A (en) 1955-02-11 1955-02-11 Improvements in or relating to apparatus for the reproduction of multi-track magnetic records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB408655A GB783198A (en) 1955-02-11 1955-02-11 Improvements in or relating to apparatus for the reproduction of multi-track magnetic records

Publications (1)

Publication Number Publication Date
GB783198A true GB783198A (en) 1957-09-18

Family

ID=9770467

Family Applications (1)

Application Number Title Priority Date Filing Date
GB408655A Expired GB783198A (en) 1955-02-11 1955-02-11 Improvements in or relating to apparatus for the reproduction of multi-track magnetic records

Country Status (1)

Country Link
GB (1) GB783198A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028812B1 (en) * 1969-02-17 1975-09-18
JPS5117897B1 (en) * 1969-02-17 1976-06-05
JPS5117898B1 (en) * 1969-02-17 1976-06-05

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028812B1 (en) * 1969-02-17 1975-09-18
JPS5117897B1 (en) * 1969-02-17 1976-06-05
JPS5117898B1 (en) * 1969-02-17 1976-06-05

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