GB830679A - An apparatus for dielectric sensing of punched records - Google Patents

An apparatus for dielectric sensing of punched records

Info

Publication number
GB830679A
GB830679A GB2559257A GB2559257A GB830679A GB 830679 A GB830679 A GB 830679A GB 2559257 A GB2559257 A GB 2559257A GB 2559257 A GB2559257 A GB 2559257A GB 830679 A GB830679 A GB 830679A
Authority
GB
United Kingdom
Prior art keywords
sensing
probes
record
probe
column
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
GB2559257A
Inventor
Nils Gustaf Erik Stemme
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.)
Atvidabergs Industrier AB
Original Assignee
Atvidabergs Industrier AB
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
Priority to CH359553D priority Critical patent/CH359553A/en
Application filed by Atvidabergs Industrier AB filed Critical Atvidabergs Industrier AB
Priority to GB2559257A priority patent/GB830679A/en
Priority to FR1181661D priority patent/FR1181661A/en
Publication of GB830679A publication Critical patent/GB830679A/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
    • 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
    • G06K7/081—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 electrostatic, e.g. by detecting the charge of capacitance between electrodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/02—Apparatus or circuits at the transmitting end
    • H04L17/12—Automatic transmitters, e.g. controlled by perforated tape
    • H04L17/14—Automatic transmitters, e.g. controlled by perforated tape with optical sensing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

830,679. Sensing record tapes. ATVIDABERGS INDUSTRIER A.B. Aug. 13, 1957, No. 25592/57. Class 106 (1). A punched record card or tape 1 having columns of holes 3 is sensed capacitively by high-frequency probes 5, one for each column position, which co-operate with a common electrode 4 on the other side of the record, each probe being connected to a terminal of a highspeed electronic switch 8 adapted to scan the probes in succession during the sensing of each column of the record by successively connecting the probes with an amplifier 9. The change of capacity between a probe and the electrode due to the presence of a hole provides an output signal. Capacitors 7 connected in the probe circuits are adjusted so that no output is produced when a blank area of the type is in the sensing position. Sprocket holes 2 provide a timing pulse in each sensing cycle which initiates the operating cycle of the switch 8. The probes are screened from one another.
GB2559257A 1957-08-13 1957-08-13 An apparatus for dielectric sensing of punched records Expired GB830679A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CH359553D CH359553A (en) 1957-08-13 1957-08-09 Device for capacitive high-speed scanning of perforated recording media
GB2559257A GB830679A (en) 1957-08-13 1957-08-13 An apparatus for dielectric sensing of punched records
FR1181661D FR1181661A (en) 1957-08-13 1957-08-26 Method and device for dielectric reading of punched cards and tapes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2559257A GB830679A (en) 1957-08-13 1957-08-13 An apparatus for dielectric sensing of punched records

Publications (1)

Publication Number Publication Date
GB830679A true GB830679A (en) 1960-03-16

Family

ID=10230179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2559257A Expired GB830679A (en) 1957-08-13 1957-08-13 An apparatus for dielectric sensing of punched records

Country Status (3)

Country Link
CH (1) CH359553A (en)
FR (1) FR1181661A (en)
GB (1) GB830679A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198096B (en) * 1960-04-02 1965-08-05 Ibm Deutschland Arrangement for the automatic evaluation of hole checks u. like billing forms
US3210527A (en) * 1961-06-12 1965-10-05 Ibm Magnetic reader
US3479491A (en) * 1964-11-18 1969-11-18 Bendix Corp Electrostatic reader head

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1223594B (en) * 1961-09-23 1966-08-25 Ibm Deutschland Device for capacitive scanning of recording media

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198096B (en) * 1960-04-02 1965-08-05 Ibm Deutschland Arrangement for the automatic evaluation of hole checks u. like billing forms
US3210527A (en) * 1961-06-12 1965-10-05 Ibm Magnetic reader
US3479491A (en) * 1964-11-18 1969-11-18 Bendix Corp Electrostatic reader head

Also Published As

Publication number Publication date
FR1181661A (en) 1959-06-17
CH359553A (en) 1962-01-15

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