GB921658A - Improved reproducing head - Google Patents

Improved reproducing head

Info

Publication number
GB921658A
GB921658A GB1927562A GB1927562A GB921658A GB 921658 A GB921658 A GB 921658A GB 1927562 A GB1927562 A GB 1927562A GB 1927562 A GB1927562 A GB 1927562A GB 921658 A GB921658 A GB 921658A
Authority
GB
United Kingdom
Prior art keywords
record member
remanent magnetism
reproducing head
accordance
forming
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
GB1927562A
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.)
Ampex Corp
Original Assignee
Ampex 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 Ampex Corp filed Critical Ampex Corp
Publication of GB921658A publication Critical patent/GB921658A/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/115—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam,e.g. of electrons or X-rays other than a beam of light for reproducing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
    • G06K1/125—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by magnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

921,658. Digital-data storage apparatus. AMPEX CORPORATION. June 22, 1960 [July 20, 1959], No. 19275/62. Divided out of 909,217. Class 106 (1). A magnetic reproducing head for a foraminated record member as in Specification 909,217, comprises means for deflecting a cathode beam in accordance with remanent magnetism in the record member, and means for collecting said beam and forming an output signal in accordance with said remanent magnetism. The head includes an evacuated envelope 32 containing core members 37, 38 forming a gap 34 through which the electron beam 41 passes on its way to an electrode 47. The record member 11 is passed, externally of the envelope 32, between the core member 38 and an external core member 39. Remanent magnetism in the record member 11 causes deflection of the cathode beam 41 to produce a signal on collector electrodes 44, 46. Two further embodiments are described with reference to Figs. 4 and 6 (not shown).
GB1927562A 1959-07-20 1960-06-22 Improved reproducing head Expired GB921658A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82830359A 1959-07-20 1959-07-20

Publications (1)

Publication Number Publication Date
GB921658A true GB921658A (en) 1963-03-20

Family

ID=25251409

Family Applications (3)

Application Number Title Priority Date Filing Date
GB1927562A Expired GB921658A (en) 1959-07-20 1960-06-22 Improved reproducing head
GB1927462A Expired GB951361A (en) 1959-07-20 1960-06-22 Improved recording head
GB2190760A Expired GB909217A (en) 1959-07-20 1960-06-22 Improved magnetic recording and reproducing apparatus and record member therefor

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB1927462A Expired GB951361A (en) 1959-07-20 1960-06-22 Improved recording head
GB2190760A Expired GB909217A (en) 1959-07-20 1960-06-22 Improved magnetic recording and reproducing apparatus and record member therefor

Country Status (2)

Country Link
DE (1) DE1207444B (en)
GB (3) GB921658A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247483A (en) * 1963-03-26 1966-04-19 Ibm Character recognition system employing a plurality of spaced serial transducers
US3651311A (en) * 1969-11-26 1972-03-21 Digitronics Corp Information signal generation apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5044081Y1 (en) * 1974-10-17 1975-12-16

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE663728C (en) * 1933-09-20 1938-08-12 Veronika Oexmann Geb Daltrop Record-shaped magnetogram carrier
US2782043A (en) * 1950-08-22 1957-02-19 Rca Corp Magnetic tape

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247483A (en) * 1963-03-26 1966-04-19 Ibm Character recognition system employing a plurality of spaced serial transducers
US3651311A (en) * 1969-11-26 1972-03-21 Digitronics Corp Information signal generation apparatus

Also Published As

Publication number Publication date
DE1207444B (en) 1965-12-23
GB909217A (en) 1962-10-31
GB951361A (en) 1964-03-04

Similar Documents

Publication Publication Date Title
GB810267A (en) Focusing magnet for long electron beams
GB965122A (en) Charged-particle beam interceptor
GB913326A (en) Improved magnetic transducer assembly
GB934661A (en) Improvements in and relating to cathode ray tubes
GB921658A (en) Improved reproducing head
GB761008A (en) Improvements in or relating to cathode ray tubes
GB1026672A (en) Electron beam readout of thermoplastic film recording
GB770127A (en) Improvements in methods and apparatus for recording and reproducing magnetic information
GB1491839A (en) Ion beam apparatus
GB1404693A (en) Microanalyser convertible into a mass-spectrometer
GB981873A (en) Apparatus for reproducing electrical signals
GB990504A (en) Improvements in or relating to the recovery of recorded information
GB972344A (en) Improvements in magnetron-type ionization gauges
GB762313A (en) Information writing system for electrostatic storage tubes
GB766763A (en) Improvements in or relating to magnetic transducer device
GB890777A (en) Improvements in or relating to television and other signal recording systems
GB1232613A (en)
GB934898A (en) Electro-magnetic transducer heads
GB771550A (en) Improvements in or relating to magnetically controlled electronic valves
GB933762A (en) Improvements in or relating to magnetic recording media
GB1046828A (en) Device for reproducing information from a magnetised carrier
GB846260A (en) Improvements in or relating to electro-magnetic transducers
GB890892A (en) Improvements in phonograph cartridge and stylus
GB849623A (en) An improved circuit arrangement for cathode ray tubes
GB735803A (en) Improvements in and relating to dynamic balancing apparatus and methods