GB928782A - Improvements in apparatus for reading code perforations in perforated media - Google Patents
Improvements in apparatus for reading code perforations in perforated mediaInfo
- Publication number
- GB928782A GB928782A GB3495861A GB3495861A GB928782A GB 928782 A GB928782 A GB 928782A GB 3495861 A GB3495861 A GB 3495861A GB 3495861 A GB3495861 A GB 3495861A GB 928782 A GB928782 A GB 928782A
- Authority
- GB
- United Kingdom
- Prior art keywords
- record medium
- perforated
- code perforations
- perforations
- code
- 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
- G06K7/02—Methods or arrangements for sensing record carriers, e.g. for reading patterns by pneumatic or hydraulic means, e.g. sensing punched holes with compressed air; by sonic means ; by ultrasonic means
Landscapes
- Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
928,782. Sensing code perforations. CREED & CO. Ltd. Sept. 28, 1961, No. 34958/61. Class 106 (1). In an apparatus for reading code perforations in a record medium, air is applied to the medium at a pressure above that of the atmosphere and, where code perforations are present, passes through to pressure-sensitive transducers which give electric output signals representing the code perforated in the record medium. A compressor 1 supplies air via a chamber 2, with distribution plate 4, to tubes 5, 5A, the outlets from which are controlled by a perforated reciprocating or oscillating plate 13 synchronized with the means for positioning the record medium 10. When the compressed air is released by the plate 13 it passes through any code perforations 9 which may be present in the record medium 10 and into corresponding tubes 6, 6A, incorporating pressure-sensitive transducers 7. In a modification the compressed air is fed to the perforated control plate 13 through a common " fishtail " duct.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE622861D BE622861A (en) | 1961-09-28 | ||
GB3495861A GB928782A (en) | 1961-09-28 | 1961-09-28 | Improvements in apparatus for reading code perforations in perforated media |
FR910763A FR1334791A (en) | 1961-09-28 | 1962-09-28 | Improvements to tape and punch card readers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3495861A GB928782A (en) | 1961-09-28 | 1961-09-28 | Improvements in apparatus for reading code perforations in perforated media |
Publications (1)
Publication Number | Publication Date |
---|---|
GB928782A true GB928782A (en) | 1963-06-12 |
Family
ID=10372101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3495861A Expired GB928782A (en) | 1961-09-28 | 1961-09-28 | Improvements in apparatus for reading code perforations in perforated media |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE622861A (en) |
GB (1) | GB928782A (en) |
-
0
- BE BE622861D patent/BE622861A/xx unknown
-
1961
- 1961-09-28 GB GB3495861A patent/GB928782A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE622861A (en) |
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