JPS5633770A - Optical character reading device - Google Patents
Optical character reading deviceInfo
- Publication number
- JPS5633770A JPS5633770A JP10942579A JP10942579A JPS5633770A JP S5633770 A JPS5633770 A JP S5633770A JP 10942579 A JP10942579 A JP 10942579A JP 10942579 A JP10942579 A JP 10942579A JP S5633770 A JPS5633770 A JP S5633770A
- Authority
- JP
- Japan
- Prior art keywords
- pattern
- memory
- image
- filter
- written
- 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
Landscapes
- Character Input (AREA)
Abstract
PURPOSE: To ensure a steady reading regardless of the type of the writing tool, by providing a band pass filter having such property as to transmits through part of the visible rays into the optical path.
CONSTITUTION: The infrared ray cut-off type filter 1-5 plus the filter 1-6 which cuts off the short wavelength side of the visible rays are inserted into the optical path. (The combined spectral transmission factor property of the filters 1-5 and 1-6 is shown by the curve 3-1.) the optical reading device 1-11 consists of the paper 1-2 with the pattern written on (including the reading subject pattern 1-3 and the pattern 1-4 written in the drop-out color), the photoelectric transducing part 1-12 (consisting of the light source 1-1, lenses 1-5 and 1-6, image-forming lens 1-7, image sensor 1-8, sensor amplifier 1-9 and A/D converter 1-10), the buffer memory 1-1 and the recognizing unit 1-14 each. The output of the part 1-12 is transferred successively to the memory 1-13. And the electrical image of the pattern is held in the memory 1-13 at the moment when the raster scanning completes for the pattern 1-3. Then the features of the pattern are extracted 1-14.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10942579A JPS5633770A (en) | 1979-08-28 | 1979-08-28 | Optical character reading device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10942579A JPS5633770A (en) | 1979-08-28 | 1979-08-28 | Optical character reading device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5633770A true JPS5633770A (en) | 1981-04-04 |
Family
ID=14509911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10942579A Pending JPS5633770A (en) | 1979-08-28 | 1979-08-28 | Optical character reading device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5633770A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4818847A (en) * | 1982-07-29 | 1989-04-04 | Nippondenso Co., Ltd. | Apparatus for optically reading printed information |
JP2013115558A (en) * | 2011-11-28 | 2013-06-10 | Fujitsu Ltd | Imaging apparatus and image recognition system |
-
1979
- 1979-08-28 JP JP10942579A patent/JPS5633770A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4818847A (en) * | 1982-07-29 | 1989-04-04 | Nippondenso Co., Ltd. | Apparatus for optically reading printed information |
JP2013115558A (en) * | 2011-11-28 | 2013-06-10 | Fujitsu Ltd | Imaging apparatus and image recognition system |
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