GB1246714A - Photoelectric reading means - Google Patents
Photoelectric reading meansInfo
- Publication number
- GB1246714A GB1246714A GB2576469A GB2576469A GB1246714A GB 1246714 A GB1246714 A GB 1246714A GB 2576469 A GB2576469 A GB 2576469A GB 2576469 A GB2576469 A GB 2576469A GB 1246714 A GB1246714 A GB 1246714A
- Authority
- GB
- United Kingdom
- Prior art keywords
- medium
- cells
- information
- reading
- photo
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Optical Communication System (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
1,246,714. Photoelectric readers. EDOUARD DUBIED & CIE S.A. 20 May, 1969 [21 May, 1968], No. 25764/69. Heading G4M. [Also in Division G1] Photo-electric reading apparatus for reading information contained in zones arranged in parallel rows on a medium 8, comprises a photocell 13 for each row on one side of the medium and on the other side, a light source 1, a condenser lens 4 and for each cell, a lens 7 arranged to produce a point image on the medium. The cells 13 and lenses 7 are arranged in a honeycomb like grid, as in Fig. 3, with each photocell area centred on its respective row 82 of zones. This arrangement allows the reading of many more items of information than a simple linear array of photo-cells. The medium may be 35 mm. photographic film, the presence or absence of an item of information, being represented by the degree of contrast of a zone with the background (transparency of the film). Also, punched tape may be read. The medium may be fixed or moving. The light source may be a lamp, as shown, having a minimally laterally extending filament, so that a point image can be obtained, or a pulsed discharge lamp. The detectors are photoresistive cells. If an electroluminescent device (e.g. gallium arsenide diode), emitting infra-red, is used, silicon photodiode detectors may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH764068A CH528115A (en) | 1968-05-21 | 1968-05-21 | Electro-optical device for reading information |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1246714A true GB1246714A (en) | 1971-09-15 |
Family
ID=4328258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2576469A Expired GB1246714A (en) | 1968-05-21 | 1969-05-20 | Photoelectric reading means |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH528115A (en) |
| DE (1) | DE1925944A1 (en) |
| FR (1) | FR2008988A1 (en) |
| GB (1) | GB1246714A (en) |
-
1968
- 1968-05-21 CH CH764068A patent/CH528115A/en not_active IP Right Cessation
-
1969
- 1969-05-20 GB GB2576469A patent/GB1246714A/en not_active Expired
- 1969-05-20 FR FR6916197A patent/FR2008988A1/fr not_active Withdrawn
- 1969-05-21 DE DE19691925944 patent/DE1925944A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CH528115A (en) | 1972-09-15 |
| DE1925944A1 (en) | 1969-12-04 |
| FR2008988A1 (en) | 1970-01-30 |
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