JPS57193868A - Recognizing system for mark discriminating circuit of optical mark reader - Google Patents
Recognizing system for mark discriminating circuit of optical mark readerInfo
- Publication number
- JPS57193868A JPS57193868A JP7657681A JP7657681A JPS57193868A JP S57193868 A JPS57193868 A JP S57193868A JP 7657681 A JP7657681 A JP 7657681A JP 7657681 A JP7657681 A JP 7657681A JP S57193868 A JPS57193868 A JP S57193868A
- Authority
- JP
- Japan
- Prior art keywords
- mark
- discriminating circuit
- level
- recognizing system
- circuit
- 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 improve the data reliability in the mark recognizing system, by sampling a mark signal in the time division and checking the continuity of the mark signal. CONSTITUTION:A mark signal waveform is converted to a digital signal with a slice level by a binary circuit 2. In this case, the slice level is switched to the highlevel and the low level by a clock, and digital signals for the high level and the low level are taken out and are sent to mark discriminating circuit 3. The mark discriminating circuit 3 checks the continuity of signals higher than the low and high slice levles and sends signals to a data code converting circuit 4 as mark data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7657681A JPS57193868A (en) | 1981-05-22 | 1981-05-22 | Recognizing system for mark discriminating circuit of optical mark reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7657681A JPS57193868A (en) | 1981-05-22 | 1981-05-22 | Recognizing system for mark discriminating circuit of optical mark reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57193868A true JPS57193868A (en) | 1982-11-29 |
Family
ID=13609077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7657681A Pending JPS57193868A (en) | 1981-05-22 | 1981-05-22 | Recognizing system for mark discriminating circuit of optical mark reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57193868A (en) |
-
1981
- 1981-05-22 JP JP7657681A patent/JPS57193868A/en active Pending
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