GB1063287A - Improvements in data transmission systems - Google Patents
Improvements in data transmission systemsInfo
- Publication number
- GB1063287A GB1063287A GB3499164A GB3499164A GB1063287A GB 1063287 A GB1063287 A GB 1063287A GB 3499164 A GB3499164 A GB 3499164A GB 3499164 A GB3499164 A GB 3499164A GB 1063287 A GB1063287 A GB 1063287A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sequence
- terminal
- data transmission
- pulses
- character
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Dc Digital Transmission (AREA)
Abstract
1,063,287. Data transmission. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 26, 1964 [Sept. 20, 1963], No. 34991/64. Heading H4P. A data transmission system comprises means for generating a sequence of pulses corresponding to each input character, and a receiver which derives from the sequence a number of patterns of energization on its output terminals, there being a terminal corresponding to each character. A counting arrangement indicates the terminal which corresponds to the particular character transmitted by indicating the terminal which received the greatest number of zeros. In the system described switches a-e are set up to represent one of ten characters. The switches complete feed-back loops between the stages T1-T5 of a shift register Re and its input via modulo 2 adders m-p. A pulse at Ed starts the register, which develops at its output a sequence of pulses, which repeats until stopped and which represents the input character. At the receiver the sequence feeds a shift register Rr whose stages are connected to various ones of ten modulo 2 adders L0-L9. As the sequence of pulses is received, so a sequence of patterns of energization appears at the outputs of L0-L9. It is shown that that output which is zero throughout the sequence corresponds to the input character. In the event of noise in the transmission channel the sequence will be disturbed and so that terminal which receives the greatest number of zeros is the significant one.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7279A FR1377497A (en) | 1963-09-20 | 1963-09-20 | Coding and decoding system allowing data transmission on a high noise level channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1063287A true GB1063287A (en) | 1967-03-30 |
Family
ID=8572197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3499164A Expired GB1063287A (en) | 1963-09-20 | 1964-08-26 | Improvements in data transmission systems |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1377497A (en) |
| GB (1) | GB1063287A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2542951B1 (en) * | 1983-03-18 | 1990-03-02 | Alsthom Atlantique | TRACK SAFETY INFORMATION ENCODING SYSTEM FOR TRAINS FOR THEIR CONTROL |
-
1963
- 1963-09-20 FR FR7279A patent/FR1377497A/en not_active Expired
-
1964
- 1964-08-26 GB GB3499164A patent/GB1063287A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1377497A (en) | 1964-11-06 |
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