GB821911A - Tape reader - Google Patents

Tape reader

Info

Publication number
GB821911A
GB821911A GB3331257A GB3331257A GB821911A GB 821911 A GB821911 A GB 821911A GB 3331257 A GB3331257 A GB 3331257A GB 3331257 A GB3331257 A GB 3331257A GB 821911 A GB821911 A GB 821911A
Authority
GB
United Kingdom
Prior art keywords
tape
photo
transistors
perforation positions
passages
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
GB3331257A
Inventor
John Allcard
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.)
J&E Arnfield Ltd
Original Assignee
J&E Arnfield 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 J&E Arnfield Ltd filed Critical J&E Arnfield Ltd
Priority to GB3331257A priority Critical patent/GB821911A/en
Publication of GB821911A publication Critical patent/GB821911A/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
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

821,911. Telegraph or like tape readers. ARNFIELD Ltd., J. & E. Oct. 24, 1957, No. 33312/57. Class 40 (3). A tape reader for perforated tape having a number of code perforation positions spaced across its width, comprises a guide way along which the tape is moved past a reading position, a light-source arranged on one side of the tape and a number of photo-transistors arranged on the other side of the tape, the photo-transistors being mounted in an opaque head having channels extending from one face thereof to the photo-transistors, the axes of the channels being a series of divergent straight lines in the plane of the reading position extending respectively from the light-source through one of the tape perforation positions to the photo-sensitive area of one of the photo-transistors. The tape 1 having perforations 3 as indicated at 5, 6, 7 is fed through a guide way 11 of a base member 10 having a slot 12 opposite the filament 17 of a lamp 16. The photo-transistors 27 are located in cylindrical cavities 28 at the ends of divergent passages 24, whose axes 25 pass through the perforation positions 3 ... 3 on the tape 1. The opaque head 18 is formed with a removable cap portion so that the photo-transistors can be correctly positioned in their cavities 28. The walls of the passages 24 are painted to give a matt black surface or a tarnishing material may provide the non- reflecting surface.
GB3331257A 1957-10-24 1957-10-24 Tape reader Expired GB821911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3331257A GB821911A (en) 1957-10-24 1957-10-24 Tape reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3331257A GB821911A (en) 1957-10-24 1957-10-24 Tape reader

Publications (1)

Publication Number Publication Date
GB821911A true GB821911A (en) 1959-10-14

Family

ID=10351314

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3331257A Expired GB821911A (en) 1957-10-24 1957-10-24 Tape reader

Country Status (1)

Country Link
GB (1) GB821911A (en)

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