JPS54131828A - Pattern information reading system - Google Patents
Pattern information reading systemInfo
- Publication number
- JPS54131828A JPS54131828A JP3877878A JP3877878A JPS54131828A JP S54131828 A JPS54131828 A JP S54131828A JP 3877878 A JP3877878 A JP 3877878A JP 3877878 A JP3877878 A JP 3877878A JP S54131828 A JPS54131828 A JP S54131828A
- Authority
- JP
- Japan
- Prior art keywords
- binary
- pattern information
- coded
- reference level
- output
- 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.)
- Granted
Links
Landscapes
- Character Input (AREA)
Abstract
PURPOSE: To increase both S/N and the resolution and thus to obtain the clear binary pattern information by selecting the optimum reference level in sequence based on the pattern information which is binary-coded already.
CONSTITUTION: The light of light source 301 hits pattern information 302 and reflected to form the image on photoelectric converter 304 through lens 303 and based on information 302. Then converter 304 delivers the analog voltage or current in accordance with the light delivered, and the output is compared with the output of reference level deciding circuit 306 through comparator 305 to be delivered in the form of the binary-coded value of "1" or "0" and then memorized (307). This memorized value is then supplied to circuit 306 with the next timing to select the output (reference level) of circuit 306. In other words, the adjacent result binary-coded is memorized in that case, and the reference level opposing to the analog output to be binary-coded next is selected based on the result of the adjacent bit.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53038778A JPS5935065B2 (en) | 1978-04-04 | 1978-04-04 | How to read pattern information |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53038778A JPS5935065B2 (en) | 1978-04-04 | 1978-04-04 | How to read pattern information |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54131828A true JPS54131828A (en) | 1979-10-13 |
JPS5935065B2 JPS5935065B2 (en) | 1984-08-27 |
Family
ID=12534741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53038778A Expired JPS5935065B2 (en) | 1978-04-04 | 1978-04-04 | How to read pattern information |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5935065B2 (en) |
-
1978
- 1978-04-04 JP JP53038778A patent/JPS5935065B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5935065B2 (en) | 1984-08-27 |
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