IT1039909B - Dispositivo per scrivere e o legere carte di riconoscimento magnetizzabili - Google Patents

Dispositivo per scrivere e o legere carte di riconoscimento magnetizzabili

Info

Publication number
IT1039909B
IT1039909B IT2552675A IT2552675A IT1039909B IT 1039909 B IT1039909 B IT 1039909B IT 2552675 A IT2552675 A IT 2552675A IT 2552675 A IT2552675 A IT 2552675A IT 1039909 B IT1039909 B IT 1039909B
Authority
IT
Italy
Prior art keywords
magnetizable
writing
reading
recognition cards
cards
Prior art date
Application number
IT2552675A
Other languages
English (en)
Italian (it)
Original Assignee
Landis & Gyr Ag
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 Landis & Gyr Ag filed Critical Landis & Gyr Ag
Application granted granted Critical
Publication of IT1039909B publication Critical patent/IT1039909B/it

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/087—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors flux-sensitive, e.g. magnetic, detectors
    • 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
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4907—Details for scanning
    • G11B5/4915—Structure of specially adapted heads
    • G11B5/4923—Structure of specially adapted heads in which zones of the transducing part are being physically controllable
    • G11B5/493—Control of magnetic properties, e.g. saturation, anisotropy
    • G11B5/4938—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films
    • G11B5/4946—Control of magnetic properties, e.g. saturation, anisotropy of thin magnetic films for formation or displacement of magnetic domains, e.g. walls, bubbles

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Credit Cards Or The Like (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Magnetic Record Carriers (AREA)
IT2552675A 1974-07-19 1975-07-18 Dispositivo per scrivere e o legere carte di riconoscimento magnetizzabili IT1039909B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH996774A CH574139A5 (enrdf_load_stackoverflow) 1974-07-19 1974-07-19

Publications (1)

Publication Number Publication Date
IT1039909B true IT1039909B (it) 1979-12-10

Family

ID=4357652

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2552675A IT1039909B (it) 1974-07-19 1975-07-18 Dispositivo per scrivere e o legere carte di riconoscimento magnetizzabili

Country Status (3)

Country Link
CH (1) CH574139A5 (enrdf_load_stackoverflow)
DE (1) DE2440553A1 (enrdf_load_stackoverflow)
IT (1) IT1039909B (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
CH574139A5 (enrdf_load_stackoverflow) 1976-03-31
DE2440553A1 (de) 1976-01-29

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