JPS5561877A - Bar code detector - Google Patents

Bar code detector

Info

Publication number
JPS5561877A
JPS5561877A JP13318878A JP13318878A JPS5561877A JP S5561877 A JPS5561877 A JP S5561877A JP 13318878 A JP13318878 A JP 13318878A JP 13318878 A JP13318878 A JP 13318878A JP S5561877 A JPS5561877 A JP S5561877A
Authority
JP
Japan
Prior art keywords
black
signal
rectangular wave
output
white bar
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.)
Granted
Application number
JP13318878A
Other languages
Japanese (ja)
Other versions
JPS6037950B2 (en
Inventor
Takao Kiogawa
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.)
Kokusai Electric Corp
Original Assignee
Kokusai Electric Corp
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 Kokusai Electric Corp filed Critical Kokusai Electric Corp
Priority to JP53133188A priority Critical patent/JPS6037950B2/en
Publication of JPS5561877A publication Critical patent/JPS5561877A/en
Publication of JPS6037950B2 publication Critical patent/JPS6037950B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To enable to detect the black and white bar width correctly at all times, with the photoelectric conversion of the light information from the bar code, silde level separation amplification, and synthesis and rectangular wave conversion after the modulation of carrier oscillation signal with the outout and with differnetial envelope detection.
CONSTITUTION: The light information from the bar code dispaly plate 1 is in photoelectric conversion at the photo detection unit 3, and the black and white bar signal separation amplifier is provided, which provides the slide level of black and white with the slide level separation amplifier 4, to pick up the corresponding signal. Further, the output signal modulates the output of the carrier oscillator 5, amplitude modulation 6, 7 is made, and the amplitude modulation waves are respectively fed to the differential envelope detectors 8 and 9 to adds and synthesize the output obtained at the rectangular wave conversion output circuit 10 and to convert into rectangular wave, and the black and white bar signals are outputted as composite signal having the continuous time depending on the width. Thus, the black and white bar width can correctly be detected at all times.
COPYRIGHT: (C)1980,JPO&Japio
JP53133188A 1978-10-31 1978-10-31 Barcode detection device Expired JPS6037950B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53133188A JPS6037950B2 (en) 1978-10-31 1978-10-31 Barcode detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53133188A JPS6037950B2 (en) 1978-10-31 1978-10-31 Barcode detection device

Publications (2)

Publication Number Publication Date
JPS5561877A true JPS5561877A (en) 1980-05-09
JPS6037950B2 JPS6037950B2 (en) 1985-08-29

Family

ID=15098744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53133188A Expired JPS6037950B2 (en) 1978-10-31 1978-10-31 Barcode detection device

Country Status (1)

Country Link
JP (1) JPS6037950B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06231291A (en) * 1992-03-13 1994-08-19 Agfa Gevaert Ag Method and apparatus for readout of bar code on photographic material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9101160B2 (en) 2005-11-23 2015-08-11 The Coca-Cola Company Condiments with high-potency sweetener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06231291A (en) * 1992-03-13 1994-08-19 Agfa Gevaert Ag Method and apparatus for readout of bar code on photographic material

Also Published As

Publication number Publication date
JPS6037950B2 (en) 1985-08-29

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