JPS5721161A - Manual sub-scanning type reader - Google Patents
Manual sub-scanning type readerInfo
- Publication number
- JPS5721161A JPS5721161A JP9582480A JP9582480A JPS5721161A JP S5721161 A JPS5721161 A JP S5721161A JP 9582480 A JP9582480 A JP 9582480A JP 9582480 A JP9582480 A JP 9582480A JP S5721161 A JPS5721161 A JP S5721161A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- sub
- source drive
- scanning
- light
- 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
Abstract
PURPOSE:To output binary signal in excellent manner through a simple operation at all times independently of the mode of sub-scanning speed, by detecting a light source drive pulse from a timing pulse generator and providing a light source drive circuit controlling the amount of light of the light source. CONSTITUTION:A peak value of a video signal read out every readout period of a line image sensor IS is stored in a peak hold circuit PH, and the peak value is renewed every readout period with the timing from a timing pulse generator TPGa. A moving amount detecting circuit DS which detects the relative moving distance toward the sub-scanning direction of the sensor IS and the original is connected, and a light source drive circuit LD controlling the light amount of the light source L with light source drive pulse Pp from the generator TPGa is connected. Further, every time when moving distance of a reader at sub-scanning direction reaches a predetermined value, the light source L is driven with pulses of a given pulse width and excellent binary signal can be outputted from a comparator COMP independently of the mode of sub-scanning at all times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9582480A JPS5721161A (en) | 1980-07-14 | 1980-07-14 | Manual sub-scanning type reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9582480A JPS5721161A (en) | 1980-07-14 | 1980-07-14 | Manual sub-scanning type reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5721161A true JPS5721161A (en) | 1982-02-03 |
Family
ID=14148149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9582480A Pending JPS5721161A (en) | 1980-07-14 | 1980-07-14 | Manual sub-scanning type reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5721161A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60157A (en) * | 1983-06-15 | 1985-01-05 | Canon Inc | Picture input device |
-
1980
- 1980-07-14 JP JP9582480A patent/JPS5721161A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60157A (en) * | 1983-06-15 | 1985-01-05 | Canon Inc | Picture input device |
| JPH0336351B2 (en) * | 1983-06-15 | 1991-05-31 | Canon Kk |
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