JPS5565101A - Measuring system for width - Google Patents
Measuring system for widthInfo
- Publication number
- JPS5565101A JPS5565101A JP13821478A JP13821478A JPS5565101A JP S5565101 A JPS5565101 A JP S5565101A JP 13821478 A JP13821478 A JP 13821478A JP 13821478 A JP13821478 A JP 13821478A JP S5565101 A JPS5565101 A JP S5565101A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- bar code
- circuit
- differentiation
- signals
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE: To enable to measure the width of bar code accurately, by differentiation the signal scanning the bar code with photo spot and combinating the binary signals slicing the differential signals of the positive and negative envelope and each differentiation signals.
CONSTITUTION: The positive envelope waveform PE is obtained by feeding the first order differentiation waveform FDS with the analog signal BAS fed to the differentiation circuit 1 in which the bar code BCD is in photo scanning, to the positive envelope detection circuit 2 and similarly the negative envelope waveform NE is obtained at the negative envelope circuit 3, to produce the difference signals PED and NED between respectively the signal waveforms PE, NE and the said first order differentiation waveform FDS. The binary signals SL1 and SL2 are obtained by feeding the waveforms of the difference signals to the circuit 6 and 7 slicing with a given slice level. Since SL1 is the signal showing the leading of the bar code signal and SL2 is the signal representing the trailing, the bar code digital signal BCDS can be obtained with the synthesis of them at the combination circuit 8.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13821478A JPS5565101A (en) | 1978-11-09 | 1978-11-09 | Measuring system for width |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13821478A JPS5565101A (en) | 1978-11-09 | 1978-11-09 | Measuring system for width |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5565101A true JPS5565101A (en) | 1980-05-16 |
JPS619669B2 JPS619669B2 (en) | 1986-03-25 |
Family
ID=15216741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13821478A Granted JPS5565101A (en) | 1978-11-09 | 1978-11-09 | Measuring system for width |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5565101A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55143682A (en) * | 1979-04-24 | 1980-11-10 | Fujitsu Ltd | Read system for bar code information |
JPS60157678A (en) * | 1984-01-27 | 1985-08-17 | Usac Electronics Ind Co Ltd | Amplifying circuit of bar code reader |
JPS60157676A (en) * | 1984-01-27 | 1985-08-17 | Usac Electronics Ind Co Ltd | Device for detecting mark |
JPS6154571A (en) * | 1984-08-24 | 1986-03-18 | Nippon Electric Ind Co Ltd | Bar code reader |
JPS6159571A (en) * | 1984-08-31 | 1986-03-27 | Nippon Electric Ind Co Ltd | Bar code reader |
US5061843A (en) * | 1989-05-30 | 1991-10-29 | Fujitsu Limited | Circuit for processing analog signal obtained by scanning bar code |
-
1978
- 1978-11-09 JP JP13821478A patent/JPS5565101A/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55143682A (en) * | 1979-04-24 | 1980-11-10 | Fujitsu Ltd | Read system for bar code information |
JPS6131911B2 (en) * | 1979-04-24 | 1986-07-23 | Fujitsu Ltd | |
JPS60157678A (en) * | 1984-01-27 | 1985-08-17 | Usac Electronics Ind Co Ltd | Amplifying circuit of bar code reader |
JPS60157676A (en) * | 1984-01-27 | 1985-08-17 | Usac Electronics Ind Co Ltd | Device for detecting mark |
JPH0120792B2 (en) * | 1984-01-27 | 1989-04-18 | Pfu Ltd | |
JPS6154571A (en) * | 1984-08-24 | 1986-03-18 | Nippon Electric Ind Co Ltd | Bar code reader |
JPS6159571A (en) * | 1984-08-31 | 1986-03-27 | Nippon Electric Ind Co Ltd | Bar code reader |
US5061843A (en) * | 1989-05-30 | 1991-10-29 | Fujitsu Limited | Circuit for processing analog signal obtained by scanning bar code |
Also Published As
Publication number | Publication date |
---|---|
JPS619669B2 (en) | 1986-03-25 |
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