[go: up one dir, main page]

JPS575175A - Bar code reader - Google Patents

Bar code reader

Info

Publication number
JPS575175A
JPS575175A JP7908380A JP7908380A JPS575175A JP S575175 A JPS575175 A JP S575175A JP 7908380 A JP7908380 A JP 7908380A JP 7908380 A JP7908380 A JP 7908380A JP S575175 A JPS575175 A JP S575175A
Authority
JP
Japan
Prior art keywords
bar
electric signal
width
bar code
basis
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
JP7908380A
Other languages
Japanese (ja)
Inventor
Hirotsugu Morimoto
Takeshi Watanabe
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7908380A priority Critical patent/JPS575175A/en
Publication of JPS575175A publication Critical patent/JPS575175A/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
    • G06K7/10—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
    • G06K7/10881—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 constructional details of hand-held scanners

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)

Abstract

PURPOSE:To attain miniaturization and to improve operability by eliminating influences of fluctuation in scanning speed and variance in bar code print precision, by analysing an electric signal output from a hand scanner on the basis of a guide bar or the width of one character bar. CONSTITUTION:A hand scanner 1 includes a light emitting body 1-1 and a photodetecting element 1-2, and light from the light emitting body 1-1 is caused to strike bar code symbols S for a manual scan; and variation in the quantity of reflected light which corresponds to a difference in reflection factor between a white bar and a black bar is received by the element 1-2 to be converted into an electric signal. This electric signal is applied to an analyzer 2. Then, how many modules compose each width forming the symbols S is analyzed on the basis of a guide bar scanned right before the bar or the width of one character bar. The result is led to an output terminal in decimal form.
JP7908380A 1980-06-13 1980-06-13 Bar code reader Pending JPS575175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7908380A JPS575175A (en) 1980-06-13 1980-06-13 Bar code reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7908380A JPS575175A (en) 1980-06-13 1980-06-13 Bar code reader

Publications (1)

Publication Number Publication Date
JPS575175A true JPS575175A (en) 1982-01-11

Family

ID=13679987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7908380A Pending JPS575175A (en) 1980-06-13 1980-06-13 Bar code reader

Country Status (1)

Country Link
JP (1) JPS575175A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215677A (en) * 1985-07-12 1987-01-24 Matsushita Electric Ind Co Ltd Bar code reader
JPH01500937A (en) * 1986-09-29 1989-03-30 マース，インコーポレィテッド Barcode data automatic discrimination method and device
JPH03209584A (en) * 1989-10-13 1991-09-12 Spectra Physics Inc Decoding of binary scanning signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520585A (en) * 1978-07-31 1980-02-14 Sharp Corp Demodulating system for bar-code signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520585A (en) * 1978-07-31 1980-02-14 Sharp Corp Demodulating system for bar-code signal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215677A (en) * 1985-07-12 1987-01-24 Matsushita Electric Ind Co Ltd Bar code reader
JPH0544714B2 (en) * 1985-07-12 1993-07-07 Matsushita Electric Ind Co Ltd
JPH01500937A (en) * 1986-09-29 1989-03-30 マース，インコーポレィテッド Barcode data automatic discrimination method and device
JPH03209584A (en) * 1989-10-13 1991-09-12 Spectra Physics Inc Decoding of binary scanning signal

Similar Documents

Publication Publication Date Title
US4900907A (en) Optical information reading apparatus
EP0255302A3 (en) Improvements relating to spectrometers
JPS575175A (en) Bar code reader
KR860003504A (en) Temperature measuring device
GB2228352B (en) Data code and apparatus for reading said data code
JPS6233630B2 (en)
DE59208038D1 (en) Device for spectrophotometric analysis
JPS5639554A (en) Original density measuring method
JPS5629773A (en) Bar code reader
JPS56118175A (en) Bar code reader
GB2114792A (en) Recognising optical code markings
GB1527188A (en) Optical read head
JPS575179A (en) Optical character reader
JPS5778270A (en) Video information input device
JPS5631177A (en) Optical character reader
JPS5743272A (en) Optical reader
JPS5224540A (en) Optical scanner
JPS5453927A (en) Optical character reader
JPS57162569A (en) Original reader
JPS55124867A (en) Optical character reader
JPH04256082A (en) Bar code input method
JPS5729183A (en) Optical character reader
JPS5741073A (en) Picture information encoding device
JPS56114475A (en) Picture reader
JPS5640973A (en) Optical character reader