JPS55121583A - Pattern read system - Google Patents
Pattern read systemInfo
- Publication number
- JPS55121583A JPS55121583A JP3032079A JP3032079A JPS55121583A JP S55121583 A JPS55121583 A JP S55121583A JP 3032079 A JP3032079 A JP 3032079A JP 3032079 A JP3032079 A JP 3032079A JP S55121583 A JPS55121583 A JP S55121583A
- Authority
- JP
- Japan
- Prior art keywords
- threshold
- read
- outputs
- circuit
- pattern read
- 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 improve read reliability by mixing a difference between high and low threshold digital signals and a high threshold digital signal together, by a system which generates a pattern read signal by converting information, read by an array of photo sensors, into a digital value.
CONSTITUTION: Characters recorded on paper 1 are image-formed on the surface of photodiode array 4 via optical system 3. Photodiode outputs are inputted to comparator 5. Weighted photo sensor outputs in a unit are added and supplied to decision circuit 6, and a binary output signal is outputted by high-threshold binary coding circuit 7 and low-threshold binary coding circuit 8. The outputs of circuits 7 and 8 are inputted to exclusive-OR gate 9 to generate an additional bit signals correcting patterns and they are added to the output of circuit 7. Since patterns are corrected by additional bits, the reliability of a pattern read improves.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3032079A JPS55121583A (en) | 1979-03-14 | 1979-03-14 | Pattern read system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3032079A JPS55121583A (en) | 1979-03-14 | 1979-03-14 | Pattern read system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55121583A true JPS55121583A (en) | 1980-09-18 |
Family
ID=12300496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3032079A Pending JPS55121583A (en) | 1979-03-14 | 1979-03-14 | Pattern read system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55121583A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103486A (en) * | 1983-11-09 | 1985-06-07 | Sumitomo Electric Ind Ltd | Optical reader |
-
1979
- 1979-03-14 JP JP3032079A patent/JPS55121583A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103486A (en) * | 1983-11-09 | 1985-06-07 | Sumitomo Electric Ind Ltd | Optical reader |
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