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GB869737A - Document marking and sensing apparatus and methods - Google Patents

Document marking and sensing apparatus and methods

Info

Publication number
GB869737A
GB869737A GB39893/59A GB3989359A GB869737A GB 869737 A GB869737 A GB 869737A GB 39893/59 A GB39893/59 A GB 39893/59A GB 3989359 A GB3989359 A GB 3989359A GB 869737 A GB869737 A GB 869737A
Authority
GB
United Kingdom
Prior art keywords
striae
card
reading
bit
output
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
GB39893/59A
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.)
Sperry Corp
Original Assignee
Sperry Rand 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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB869737A publication Critical patent/GB869737A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06187—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with magnetically detectable marking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06K7/083—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 inductive
    • G06K7/084—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 inductive sensing magnetic material by relative movement detecting flux changes without altering its magnetised state

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)

Abstract

869,737. Statistical apparatus. SPERRY RAND CORPORATION. Nov. 24, 1959 [Nov. 24, 1958], No. 39893/59. Class 106 (1). A record card bears each bit of information in the form of a series of striae formed in or on the card at a location which is characteristic of the information it represents. The striae may be slits cut in the card or lines printed in fluorescent, phosphorescent or magnetizable ink. As illustrated in Fig. 1 the five striae 15 which constitute each bit 12 are of a magnetizable material. Reading is effected by passing the card under a number of variable reluctance sensing elements 3 having output terminals 6, 6a. If the striae are pre-magnetized reading may be effected by conventional reading heads. The output from each element 3 in the presence of a bit 12 is a train of five pulses generated as the striae pass under the element. Terminals 6, 6a are connected to an integrating circuit which controls a threshold amplifier so that an output is obtained only when five pulses have been supplied. This arrangement avoids reading errors due to spurious marks on the cards.
GB39893/59A 1958-11-24 1959-11-24 Document marking and sensing apparatus and methods Expired GB869737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US869737XA 1958-11-24 1958-11-24

Publications (1)

Publication Number Publication Date
GB869737A true GB869737A (en) 1961-06-07

Family

ID=22202066

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39893/59A Expired GB869737A (en) 1958-11-24 1959-11-24 Document marking and sensing apparatus and methods

Country Status (2)

Country Link
GB (1) GB869737A (en)
NL (1) NL245725A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5017139A (en) * 1973-05-02 1975-02-22

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5017139A (en) * 1973-05-02 1975-02-22

Also Published As

Publication number Publication date
NL245725A (en)

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