JPS5561877A - Bar code detector - Google Patents
Bar code detectorInfo
- 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
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
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)
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)
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 |
-
1978
- 1978-10-31 JP JP53133188A patent/JPS6037950B2/en not_active Expired
Cited By (1)
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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