JPS5789178A - Mark input device - Google Patents
Mark input deviceInfo
- Publication number
- JPS5789178A JPS5789178A JP16331980A JP16331980A JPS5789178A JP S5789178 A JPS5789178 A JP S5789178A JP 16331980 A JP16331980 A JP 16331980A JP 16331980 A JP16331980 A JP 16331980A JP S5789178 A JPS5789178 A JP S5789178A
- Authority
- JP
- Japan
- Prior art keywords
- mark
- uncertain
- output
- outputted
- level
- 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
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
- G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
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 prevent an erroneous detection of a mark of uncertain level, by outputting a mark as a bad mark when a light reflection factor of a mark is in an uncertain level. CONSTITUTION:An analog output signal of a photoelectric converting element 1 is divided into 2 kinds of signals having a high level and a low level by a variable amplifier 2, and when it is detected by both the levels that there is a mark, a mark output 7 is outputted but an uncertain mark output 8 is not outputted. In case when there is no mark at the time of amplification of a low level, and there is a mark at the time of amplification of a high level, the uncertain mark output 8 is outputted. In case when there is no mark at the time of amplification of both a low level and a high level, the mark output 7 and the uncertain mark output 8 are not outputted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16331980A JPS5789178A (en) | 1980-11-21 | 1980-11-21 | Mark input device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16331980A JPS5789178A (en) | 1980-11-21 | 1980-11-21 | Mark input device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5789178A true JPS5789178A (en) | 1982-06-03 |
Family
ID=15771572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16331980A Pending JPS5789178A (en) | 1980-11-21 | 1980-11-21 | Mark input device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5789178A (en) |
-
1980
- 1980-11-21 JP JP16331980A patent/JPS5789178A/en active Pending
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