GB737801A - Apparatus for reading digital information from a punched tape, card or the like - Google Patents
Apparatus for reading digital information from a punched tape, card or the likeInfo
- Publication number
- GB737801A GB737801A GB3051752A GB3051752A GB737801A GB 737801 A GB737801 A GB 737801A GB 3051752 A GB3051752 A GB 3051752A GB 3051752 A GB3051752 A GB 3051752A GB 737801 A GB737801 A GB 737801A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tape
- punched
- light
- photo
- direction opposite
- 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)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Artificial Intelligence (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
737,801. Digital electric calculating apparatus ; statistical apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 26, 1953 [Dec. 2, 1952], No. 30517/52. Class 106 (1). [Also in Group XL (b)] Apparatus for reading information from a punched or similarly marked member, comprises means for moving the member, means for sweeping a beam of light in a direction opposite to the direction of motion of the member, and a light-sensitive device for receiving light passing through punched holes or similar lighttransmitting indications in the member whereby electrical pulses representing the information recorded on the member are generated. Digital information is recorded in a tape 1, Fig. 1, by punched holes spaced along its length, the tape being fed towards the left by a winch 4. Mirrors 12 and 14 moved by electromagnets 15 and 16, respectively, cause a beam of light from a source 10 to be scanned along the tape in a direction opposite to the movement of the tape. This gives rise to a series of signals at a photocell 9 which represent input data for a digital computor. In addition to this data, further indications on the tape which control the feeding winch 4 are picked up by another photocell 20. More than one line of holes may be punched in the tape and several items of digital information may be read by a row of photo-cells simultaneously. In another embodiment (Fig. 2, not shown), a rotating polygonal mirror drum is used to scan the light beam along the record tape, and a third photo-cell is used to pick up an initiating signal. This signal is used to gate the result of the next complete scan into the computor. In a third embodiment the light source 10, Fig. 4, is located within a transparent cylinder 32 over which the data tape is passed. A slotted drum 34, rotating in a direction opposite to the motion of the tape, provides for the scanning action, signals being picked up by photo-cells 9, 20 and 24, as before. All embodiments may be modified to deal with punched cards instead of punched tape. Specification 717,114 is referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3051752A GB737801A (en) | 1952-12-02 | 1952-12-02 | Apparatus for reading digital information from a punched tape, card or the like |
| GB3124353A GB737839A (en) | 1952-12-02 | 1952-12-02 | Apparatus for reading digital information from a punched tape, card or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3051752A GB737801A (en) | 1952-12-02 | 1952-12-02 | Apparatus for reading digital information from a punched tape, card or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB737801A true GB737801A (en) | 1955-10-05 |
Family
ID=10308913
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3051752A Expired GB737801A (en) | 1952-12-02 | 1952-12-02 | Apparatus for reading digital information from a punched tape, card or the like |
| GB3124353A Expired GB737839A (en) | 1952-12-02 | 1952-12-02 | Apparatus for reading digital information from a punched tape, card or the like |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3124353A Expired GB737839A (en) | 1952-12-02 | 1952-12-02 | Apparatus for reading digital information from a punched tape, card or the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB737801A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL223122A (en) * | 1956-12-11 | |||
| NL254964A (en) * | 1959-08-17 |
-
1952
- 1952-12-02 GB GB3051752A patent/GB737801A/en not_active Expired
- 1952-12-02 GB GB3124353A patent/GB737839A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB737839A (en) | 1955-10-05 |
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