GB855274A - Tape reading apparatus - Google Patents

Tape reading apparatus

Info

Publication number
GB855274A
GB855274A GB2179759A GB2179759A GB855274A GB 855274 A GB855274 A GB 855274A GB 2179759 A GB2179759 A GB 2179759A GB 2179759 A GB2179759 A GB 2179759A GB 855274 A GB855274 A GB 855274A
Authority
GB
United Kingdom
Prior art keywords
tape
light
perforation
photo
baffles
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
GB2179759A
Inventor
Martin Herbert Lloyd
Frank Gerald Smith
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.)
Creed and Co Ltd
Original Assignee
Creed and Co 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
Priority to NL252820D priority Critical patent/NL252820A/xx
Application filed by Creed and Co Ltd filed Critical Creed and Co Ltd
Priority to GB2179759A priority patent/GB855274A/en
Priority to BE592144A priority patent/BE592144A/en
Priority to FR830908A priority patent/FR1263484A/en
Priority to DEC21768A priority patent/DE1148786B/en
Publication of GB855274A publication Critical patent/GB855274A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Character Input (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

855,274. Photo-electric tape readers. CREED & CO. Ltd. June 25, 1959, No. 21797/59. Class 40(3). [Also in Group XIX] Tape reading apparatus for reading information stored on a tape 4 in the form of a code combination of perforations 6, comprises means 1, 2 for directing a beam of parallel light on the tape, a plurality of photo-cells 7, 8, each for determining the presence or absence of a perforation in the tape in one code element position and each positioned on the side of the tape remote from the source of parallel light at a distance X equal to a distance of from 3- to 15- times the diameter of a photocell window, and a plurality of light baffles 9, the axis of which are disposed parallel to said beam of light and each having an interior surface which is optically non- reflecting. The photo-cells may comprise semiconductor devices. The baffles may be formed of synthetic resin bonded paper with the interior surfaces sprayed with optical matt black. The invention has the effect of increasing the ratio of the signals produced by perforation 6 and tape area 5 with no perforation since only a small amount of light 12 which diffuses through an area with no perforation reaches the photocell. If desired the apparatus may include an apertured light chopper 10.
GB2179759A 1959-06-25 1959-06-25 Tape reading apparatus Expired GB855274A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL252820D NL252820A (en) 1959-06-25
GB2179759A GB855274A (en) 1959-06-25 1959-06-25 Tape reading apparatus
BE592144A BE592144A (en) 1959-06-25 1960-06-22 Device for reading information recorded on tape
FR830908A FR1263484A (en) 1959-06-25 1960-06-23 Device for reading information recorded on tape
DEC21768A DE1148786B (en) 1959-06-25 1960-06-24 Photoelectric punch tape scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2179759A GB855274A (en) 1959-06-25 1959-06-25 Tape reading apparatus

Publications (1)

Publication Number Publication Date
GB855274A true GB855274A (en) 1960-11-30

Family

ID=10168970

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2179759A Expired GB855274A (en) 1959-06-25 1959-06-25 Tape reading apparatus

Country Status (4)

Country Link
BE (1) BE592144A (en)
DE (1) DE1148786B (en)
GB (1) GB855274A (en)
NL (1) NL252820A (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR746762A (en) * 1932-02-23 1933-06-06 Improvements to accounting, statistical and other machines, operating using cards
US2272366A (en) * 1939-07-25 1942-02-10 Ibm Control element for statistical machines
US2420716A (en) * 1944-11-04 1947-05-20 Rca Corp Reading aid for the blind
BE503889A (en) * 1950-07-03
US2735617A (en) * 1950-07-18 1956-02-21 Process for recording on a recording
US2807663A (en) * 1950-10-02 1957-09-24 Rca Corp Electronic character selecting and/or printing apparatus
BE531675A (en) * 1954-06-23
DE1777088A1 (en) * 1968-09-04 1971-04-01 Schlieper Guenter Hydraulic construction with self-regulating compensation piston

Also Published As

Publication number Publication date
DE1148786B (en) 1963-05-16
BE592144A (en) 1960-12-22
NL252820A (en)

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