GB710700A - Signal storing device for telegraph and like systems - Google Patents
Signal storing device for telegraph and like systemsInfo
- Publication number
- GB710700A GB710700A GB6682/51A GB668251A GB710700A GB 710700 A GB710700 A GB 710700A GB 6682/51 A GB6682/51 A GB 6682/51A GB 668251 A GB668251 A GB 668251A GB 710700 A GB710700 A GB 710700A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- contacts
- revolution
- condensers
- relay
- 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
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/42—Transmitting circuits; Receiving circuits using mechanical distributors
-
- 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
-
- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Control Of Electric Motors In General (AREA)
- Safety Devices In Control Systems (AREA)
- Motor And Converter Starters (AREA)
Abstract
710,700. Code telegraphy. STAATSBEDRIJF DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. March 20, 1951 [March 24, 1950], No. 6682/51. Class 40 (3) A signal storing device for a telegraph system in which a number of signals are retransmitted when signal mutilation has occured over the transmission path, as described in Specifications 519,633 and 632,774, comprises a set of condensers simultaneously connected by a set of contacts and selectively charged according to the signal, a second set of contacts simultaneously connecting the condensers to individual distributer contacts sequentially connected to a trigger circuit having two conditions of stability and operating when tripped to one or the other of its conditions of stability to apply a voltage to recharge the associated condenser with a charge of the same polarity as that applied to the trigger circuit. Successive signals are applied to the sets of condensers C1 . . . C7, C8 ... C14, C15 . . . C21 by contacts Z<SP>1</SP> . . . Z<SP>7</SP> in conjunction with contacts f<SP>1</SP> . . . f<SP>7</SP> and contacts h' . . . h<SP>7</SP>, the contacts Z' . . . Z7 being closed during the first half of each revolution of a fastrotating shaft. The relays F, H are controlled by a shaft moving at one third the speed of the fast shaft, relay F being operated after the slow shaft has completed one third of a revolution and relay H also being operated when the slow shaft has completed two thirds of a revolution, so that the contacts f<SP>1</SP> .. f<SP>7</SP> and h<SP>1</SP> . . . h<SP>7</SP> are closed during the second and third revolutions of the fast shaft. Contacts j<SP>1</SP> . . . j<SP>7</SP> closed by relay J operated during the second half of each revolution of the fast shaft apply the changes on condensers C1 ... C7. C8 . . . C14 or C15 . . . C21 to segments 1 ... 7 of the distributer 10 connected during the second half of the revolution of the fast moving shaft to a resistance R4 and the grid of the left hand valve of the trigger device FF. If, for example, a negative voltage is applied from a connected condenser, the lefthand valve is cut-off assuming the previous signal elements but makes it conducting-and the righthand valve conducts so that the potential drop across resistance R2 is applied via ring 8 and the corresponding segment 1 . . . 7 to recharge the condenser negatively. Current flow in the righthand valve energizes winding II of relay KA to operate its contact ka to pass the appropriate signal element to the line 11. If a signal has been mutilated in transmission the fast shaft is arrested in a position such that the relay Z is unoperated and relay J operated and further signals cannot be applied to the sets of condensers. The slow shaft continues to rotate to control the operation of relays F, H to effect the retransmission of the signals set up on the three sets of condensers. If further signal multilation does not occur, the fast shaft is again brought into action at the end of the revolution of the slow shaft. Specification 666,316 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US307491XA | 1950-03-24 | 1950-03-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB710700A true GB710700A (en) | 1954-06-16 |
Family
ID=21855824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6682/51A Expired GB710700A (en) | 1950-03-24 | 1951-03-20 | Signal storing device for telegraph and like systems |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE501850A (en) |
CH (1) | CH307491A (en) |
DE (1) | DE884649C (en) |
FR (1) | FR1042813A (en) |
GB (1) | GB710700A (en) |
NL (1) | NL73314C (en) |
-
0
- BE BE501850D patent/BE501850A/xx unknown
- NL NL73314D patent/NL73314C/xx active
-
1951
- 1951-03-12 CH CH307491D patent/CH307491A/en unknown
- 1951-03-20 GB GB6682/51A patent/GB710700A/en not_active Expired
- 1951-03-22 DE DEST3188A patent/DE884649C/en not_active Expired
- 1951-03-23 FR FR1042813D patent/FR1042813A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH307491A (en) | 1955-05-31 |
NL73314C (en) | |
BE501850A (en) | |
FR1042813A (en) | 1953-11-04 |
DE884649C (en) | 1953-07-27 |
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