GB1366261A - Digital data transmission system - Google Patents
Digital data transmission systemInfo
- Publication number
- GB1366261A GB1366261A GB438573A GB438573A GB1366261A GB 1366261 A GB1366261 A GB 1366261A GB 438573 A GB438573 A GB 438573A GB 438573 A GB438573 A GB 438573A GB 1366261 A GB1366261 A GB 1366261A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- transformer
- switchable
- receiver
- secondary winding
- 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
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
- H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
- H04L25/0268—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling with modulation and subsequent demodulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Dc Digital Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
1366261 Digital transmission NATIONAL CASH REGISTER CO 29 Jan 1973 [14 Feb 1972] 4385/73 Heading H4P A transmitter includes a transformer 11 having a rectangular hysterisis loop, switchable by binary signals between first and second remanence states and providing pulses to a line connected to a receiver, Fig. 2, having a transformer 22 the secondary winding of which is coupled to a bi-stable circuit 36, 37 switchable by line signals from one state to another. The receiver transformer impedance matches that of the line. Diodes 25, 26 alternately clamp one side of secondary winding 24 to bias level when the other side is triggering the bi-stable circuit; this controls transistors 36, 37 providing a bipolar output. The reciever transformer impedance matches that of the line.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22579372A | 1972-02-14 | 1972-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1366261A true GB1366261A (en) | 1974-09-11 |
Family
ID=22846263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB438573A Expired GB1366261A (en) | 1972-02-14 | 1973-01-29 | Digital data transmission system |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS4894311A (en) |
DE (1) | DE2306681A1 (en) |
FR (1) | FR2172154B1 (en) |
GB (1) | GB1366261A (en) |
NL (1) | NL7301560A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4911413A (en) * | 1972-05-30 | 1974-01-31 | ||
DE2736522C2 (en) * | 1977-08-12 | 1979-05-31 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Circuit arrangement for transmitting data |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3465101A (en) * | 1966-04-18 | 1969-09-02 | Collins Radio Co | High speed inter-computer communication using narrow bandwidth twisted pair cable |
-
1973
- 1973-01-29 GB GB438573A patent/GB1366261A/en not_active Expired
- 1973-02-02 NL NL7301560A patent/NL7301560A/xx not_active Application Discontinuation
- 1973-02-10 DE DE19732306681 patent/DE2306681A1/en not_active Withdrawn
- 1973-02-13 JP JP1784573A patent/JPS4894311A/ja active Pending
- 1973-02-13 FR FR7304956A patent/FR2172154B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2172154B1 (en) | 1978-03-03 |
DE2306681A1 (en) | 1973-08-30 |
JPS4894311A (en) | 1973-12-05 |
FR2172154A1 (en) | 1973-09-28 |
NL7301560A (en) | 1973-08-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |