GB990947A - Improvements in or relating to circuit arrangements for producing pulses - Google Patents
Improvements in or relating to circuit arrangements for producing pulsesInfo
- Publication number
- GB990947A GB990947A GB3210063A GB3210063A GB990947A GB 990947 A GB990947 A GB 990947A GB 3210063 A GB3210063 A GB 3210063A GB 3210063 A GB3210063 A GB 3210063A GB 990947 A GB990947 A GB 990947A
- Authority
- GB
- United Kingdom
- Prior art keywords
- card
- pulses
- distance
- output
- sensing station
- 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
- G06K7/01—Details
- G06K7/016—Synchronisation of sensing process
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/08—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers from or to individual record carriers, e.g. punched card, memory card, integrated circuit [IC] card or smart card
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Conveying Record Carriers (AREA)
Abstract
990,947. Statistical apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 14, 1963 [Aug. 17, 1962], No. 32100/63. Heading G4M. Passage of a record card through a sensing station is timed by detecting the leading edge of the card, counting the number of pulses delivered by a pulse-wheel connected to the record driving mechanism corresponding to the distance travelled by the card in the interval between detection of the leading edge and arrival of the first column at the sensing station, and thereafter counting the number of pulses corresponding to the distance between successive columns. The apparatus shown may be used for timing either of two different types of cards. Pulse wheel PW has two sets of perforations which are sensed photo-electrically at PB 1 or PB 2 to provide a train of pulses the frequency of which is related to the distance between columns of the cards. Switches S 1 and S 2 are set according to the type of card being sensed. Counter TS is normally held at a predetermined count by bi-stable circuit FF 2 and switch S 2 . On arrival of the leading edge of the card at detector RD, FF 2 is set and counter TS counts pulses applied to terminal 1, starting at the predetermined count. When the first column is at a distance from the sensing station equal to the column-spacing; counter TS produces a pulse at output 3 to set bi-stable circuit FF 1 and open gate P, any pulses previously produced at output 4 being blocked. Subsequent pulses from output 4 occur as successive columns reach the sensing station and pass to output terminal 5. After sensing of the card is completed, a control circuit comp resets FF 2 and FF 1 .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL282234A NL139400B (en) | 1962-08-17 | 1962-08-17 | CIRCUIT FOR GENERATING PULSES AT THE TIMES AT WHICH INFORMATION MUST BE READ IN A PUNCH CARD READING MACHINE FROM A PUNCH CARD. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB990947A true GB990947A (en) | 1965-05-05 |
Family
ID=19754050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3210063A Expired GB990947A (en) | 1962-08-17 | 1963-08-14 | Improvements in or relating to circuit arrangements for producing pulses |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1245625B (en) |
| GB (1) | GB990947A (en) |
| NL (2) | NL139400B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2817480A (en) * | 1954-05-17 | 1957-12-24 | Hughes Aircraft Co | Electronic data translating system |
| NL301663A (en) * | 1955-09-06 |
-
0
- NL NL282234D patent/NL282234A/xx unknown
-
1962
- 1962-08-17 NL NL282234A patent/NL139400B/en unknown
-
1963
- 1963-08-13 DE DE1963N0023602 patent/DE1245625B/en active Pending
- 1963-08-14 GB GB3210063A patent/GB990947A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL282234A (en) | |
| DE1245625B (en) | 1967-07-27 |
| NL139400B (en) | 1973-07-16 |
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