JPS57174773A - Bar code demodulating method - Google Patents

Bar code demodulating method

Info

Publication number
JPS57174773A
JPS57174773A JP5941681A JP5941681A JPS57174773A JP S57174773 A JPS57174773 A JP S57174773A JP 5941681 A JP5941681 A JP 5941681A JP 5941681 A JP5941681 A JP 5941681A JP S57174773 A JPS57174773 A JP S57174773A
Authority
JP
Japan
Prior art keywords
bar code
supplied
input signal
bar
rise
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.)
Pending
Application number
JP5941681A
Other languages
Japanese (ja)
Inventor
Isamu Takeda
Yushi Inagaki
Hiroyuki Ikeda
Shunji Kitagawa
Hirotaka Shibata
Eiji Hongo
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.)
Fujitsu Ltd
Fujitsu Frontech Ltd
Original Assignee
Fujitsu Ltd
Fujitsu Frontech 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 Fujitsu Ltd, Fujitsu Frontech Ltd filed Critical Fujitsu Ltd
Priority to JP5941681A priority Critical patent/JPS57174773A/en
Publication of JPS57174773A publication Critical patent/JPS57174773A/en
Pending 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
    • G06K7/01—Details
    • G06K7/016—Synchronisation of sensing process
    • G06K7/0166—Synchronisation of sensing process by means of clock-signals derived from the code marks, e.g. self-clocking code

Landscapes

  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)

Abstract

PURPOSE:To demodulate the accurate bar code information, by calculating the width of a character bar based on the calculated value of the standarized width of a guard bar and a center bar respectively. CONSTITUTION:A signal waveform corresponding to a bar code of a label and fed from a readout part R is supplied to a counter part K. Thus a rise counter K1 performs the counting for a period from the rise of the input signal waveform to the rise of the next input signal. At the same time, a fall counter K2 performs the counting for a period from the fall of the next input signal waveform to the fall of the next input signal. The value of the bar code length counted at the part K receives the control of a control part C to be supplied to a memory M. The length measuring data is supplied to a demodulating part F by the control of the part C. At the part F, an accurate width is calculated for the bar code based on the supplied length measuring data.
JP5941681A 1981-04-20 1981-04-20 Bar code demodulating method Pending JPS57174773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5941681A JPS57174773A (en) 1981-04-20 1981-04-20 Bar code demodulating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5941681A JPS57174773A (en) 1981-04-20 1981-04-20 Bar code demodulating method

Publications (1)

Publication Number Publication Date
JPS57174773A true JPS57174773A (en) 1982-10-27

Family

ID=13112639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5941681A Pending JPS57174773A (en) 1981-04-20 1981-04-20 Bar code demodulating method

Country Status (1)

Country Link
JP (1) JPS57174773A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59201174A (en) * 1983-04-28 1984-11-14 Nissan Motor Co Ltd Signal processing method for bar code reader
JPH07507267A (en) * 1991-11-19 1995-08-10 ダンレナ・ピーテイワイ・リミテツド Arthropodicidal and nematicidal sulfonates
JP2003524116A (en) * 2000-02-22 2003-08-12 エンブラコ・エウローペ・ソシエタ・ア・レスポンサビリタ・リミタータ Compressor valve plate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5629773A (en) * 1979-08-15 1981-03-25 Nec Corp Bar code reader
JPS5654574A (en) * 1979-10-09 1981-05-14 Nec Corp Bar code reader

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5629773A (en) * 1979-08-15 1981-03-25 Nec Corp Bar code reader
JPS5654574A (en) * 1979-10-09 1981-05-14 Nec Corp Bar code reader

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59201174A (en) * 1983-04-28 1984-11-14 Nissan Motor Co Ltd Signal processing method for bar code reader
JPH057754B2 (en) * 1983-04-28 1993-01-29 Nitsusan Jidosha Kk
JPH07507267A (en) * 1991-11-19 1995-08-10 ダンレナ・ピーテイワイ・リミテツド Arthropodicidal and nematicidal sulfonates
JP2003524116A (en) * 2000-02-22 2003-08-12 エンブラコ・エウローペ・ソシエタ・ア・レスポンサビリタ・リミタータ Compressor valve plate
JP4726379B2 (en) * 2000-02-22 2011-07-20 エンブラコ・エウローペ・ソシエタ・ア・レスポンサビリタ・リミタータ Compressor valve plate

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