IT1226070B - Method and device for reading graphic codes - Google Patents
Method and device for reading graphic codesInfo
- Publication number
- IT1226070B IT1226070B IT8722841A IT2284187A IT1226070B IT 1226070 B IT1226070 B IT 1226070B IT 8722841 A IT8722841 A IT 8722841A IT 2284187 A IT2284187 A IT 2284187A IT 1226070 B IT1226070 B IT 1226070B
- Authority
- IT
- Italy
- Prior art keywords
- optical
- code
- focaliser
- speed
- graphic codes
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 abstract 4
- 238000001514 detection method Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
Abstract
In a device for reading graphic codes (in particular bar codes), the said code is illuminated with a diffused white light while movement takes place across the reading field of an optical focaliser at a speed and in accordance with a direction, which are constant and pre-set. The optical signals generated by the variations in intensity of the light reflected by the single components comprising the said code, are focalised by the said optical focaliser, detected and transformed into electric signals, which in turn are decoded and processed for use as appropriate. A phasing device controls the congruence between the speed of generation and detection of the optical signals of the entire code and their transformation and/or decoding (figure 2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8722841A IT1226070B (en) | 1987-12-01 | 1987-12-01 | Method and device for reading graphic codes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8722841A IT1226070B (en) | 1987-12-01 | 1987-12-01 | Method and device for reading graphic codes |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8722841A0 IT8722841A0 (en) | 1987-12-01 |
IT1226070B true IT1226070B (en) | 1990-12-10 |
Family
ID=11201053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT8722841A IT1226070B (en) | 1987-12-01 | 1987-12-01 | Method and device for reading graphic codes |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1226070B (en) |
-
1987
- 1987-12-01 IT IT8722841A patent/IT1226070B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8722841A0 (en) | 1987-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19931227 |