JPS54124931A - Optical reader - Google Patents
Optical readerInfo
- Publication number
- JPS54124931A JPS54124931A JP3325878A JP3325878A JPS54124931A JP S54124931 A JPS54124931 A JP S54124931A JP 3325878 A JP3325878 A JP 3325878A JP 3325878 A JP3325878 A JP 3325878A JP S54124931 A JPS54124931 A JP S54124931A
- Authority
- JP
- Japan
- Prior art keywords
- diode
- bar
- photo sensor
- card
- variation
- 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
Abstract
PURPOSE: To simplify a reader by using one photo sensor, by discriminating the existence of a bar-code card and reading bar-code information by switching the discrimination conditions of the photo sensor according to time.
CONSTITUTION: When bar-code card 1 is inserted between light emission diode 3 and photo transistor Tr9 of the photo sensor system, screening from light between diode 3 and Tr9 is done to change output signal OUT from a high level to a low level for time T1 and the variation of this signal is detected and then applied to luminescence switching logic part 4. By receiving this signal variation, switching logic part 4 operates transistor Tr5 by way of amplifier 5 to use the parallel circuit of resistances 7 and 8 as a current-limiting resistance for diode 3, thereby increasing the driving current of diode 3. Consequently, it is made possible to read bar codes of card 1 by diode 3 and Tr9.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3325878A JPS54124931A (en) | 1978-03-22 | 1978-03-22 | Optical reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3325878A JPS54124931A (en) | 1978-03-22 | 1978-03-22 | Optical reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54124931A true JPS54124931A (en) | 1979-09-28 |
Family
ID=12381474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3325878A Pending JPS54124931A (en) | 1978-03-22 | 1978-03-22 | Optical reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54124931A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5720050U (en) * | 1980-06-30 | 1982-02-02 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028232A (en) * | 1973-07-12 | 1975-03-22 | ||
JPS5260526A (en) * | 1975-11-13 | 1977-05-19 | Seiko Epson Corp | Card reader |
-
1978
- 1978-03-22 JP JP3325878A patent/JPS54124931A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028232A (en) * | 1973-07-12 | 1975-03-22 | ||
JPS5260526A (en) * | 1975-11-13 | 1977-05-19 | Seiko Epson Corp | Card reader |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5720050U (en) * | 1980-06-30 | 1982-02-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0322920A3 (en) | Optical character reader | |
JPS57105088A (en) | Character reader | |
JPS55115166A (en) | Optical information reader | |
JPS54124931A (en) | Optical reader | |
JPS55110229A (en) | Automatic focus indicator of camera | |
JPS576977A (en) | Bar code reading system | |
DK0624880T3 (en) | Procedure and circuit for counting down the value of a debit card | |
JPS55115164A (en) | Optical information reader | |
KR920019156A (en) | Back Level Detection Circuit of Optical Image Reader | |
SU877582A1 (en) | Device for photoelectric reading of data | |
JPS563449A (en) | Program retrieving device | |
JPS5333531A (en) | Bar code reader | |
JPS567180A (en) | Character recognizing method for optical character reader | |
JPS55110376A (en) | Optical character reader | |
JPS575179A (en) | Optical character reader | |
JPS5580178A (en) | Special code detection method | |
SU1228127A1 (en) | Photoelectric reading device | |
JPS5335429A (en) | Code reader | |
JPS54110734A (en) | Optical reading device | |
JPS5745777A (en) | Character picture processor | |
JPS53130933A (en) | Code reader | |
JPS5640972A (en) | Optical character reader | |
JPS57211667A (en) | Preventing system for erroneous read | |
SU1463606A1 (en) | Device for reading number of railway vehicle | |
SU940188A1 (en) | Device for reading-out information from punched cards |