GB1298835A - Electronic modulation retransmitter device - Google Patents
Electronic modulation retransmitter deviceInfo
- Publication number
- GB1298835A GB1298835A GB59654/69A GB5965469A GB1298835A GB 1298835 A GB1298835 A GB 1298835A GB 59654/69 A GB59654/69 A GB 59654/69A GB 5965469 A GB5965469 A GB 5965469A GB 1298835 A GB1298835 A GB 1298835A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conduct
- capacitor
- current
- signal
- dec
- 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
- 239000003990 capacitor Substances 0.000 abstract 3
- 239000000543 intermediate Substances 0.000 abstract 1
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
- H04L25/20—Repeater circuits; Relay circuits
- H04L25/22—Repeaters for converting two wires to four wires; Repeaters for converting single current to double current
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/01—Shaping pulses
- H03K5/04—Shaping pulses by increasing duration; by decreasing duration
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Radio Relay Systems (AREA)
- Dc Digital Transmission (AREA)
Abstract
1298835 Binary switching circuits; telegraphy COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT - ALCATEL 5 Dec 1968 [23 Dec 1968] 59654/69 Headings H3T and H4P Momentary interruptions of a double current telegraph signal are removed by a circuit comprising two oppositely disected diodes D1, D2 in series with the receiving line L, two transistors controlling an output switch and having their inputs connected across respective diodes and a time constant circuit for maintaining the output during interruptions. A negative current at L passes through D1 to make T2 conduct and rapidly discharge a capacitor C. A positive current at L causes T 1 and T 3 to conduct to rapidly charge the capacitor and to make the output switch T 4 conduct. If the signal current is interrupted, due for example to the inter mediate position of a telegraph sending relay or between signal elements of the same polarity, both charge and discharge transistors T 2 and T 3 are non-conductive and the capacitor holds the output transistor T 4 in its existing state.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR180133 | 1968-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1298835A true GB1298835A (en) | 1972-12-06 |
Family
ID=8658893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB59654/69A Expired GB1298835A (en) | 1968-12-23 | 1969-12-05 | Electronic modulation retransmitter device |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3643026A (en) |
| JP (1) | JPS5031763B1 (en) |
| BE (1) | BE743031A (en) |
| CH (1) | CH497824A (en) |
| DE (1) | DE1964286C3 (en) |
| FR (1) | FR1604879A (en) |
| GB (1) | GB1298835A (en) |
| NL (1) | NL161640C (en) |
| SE (1) | SE353829B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3710022A (en) * | 1970-01-21 | 1973-01-09 | Lynch Communication Systems | Sampling and retiming circuit for pcm repeaters |
| CN102652417A (en) * | 2009-12-15 | 2012-08-29 | 松下电器产业株式会社 | Wireless relaying device, wireless transmission device, and wireless relaying method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1071751B (en) * | 1959-12-24 | Siemens S. Haiskie Aktiiengesellschaff, Berlin und München | Circuit arrangement for converting double current symbols to single current symbols | |
| DE1115292B (en) * | 1959-10-09 | 1961-10-19 | Telefunken Patent | Arrangement for bounce-free closing and opening of a circuit |
| NL278225A (en) * | 1961-05-10 | |||
| US3180935A (en) * | 1962-02-20 | 1965-04-27 | Weaver Howard Shanklin | High speed pulse repeater |
| FR1387242A (en) * | 1963-12-17 | 1965-01-29 | Telecomm Electronique Aeronaut | Solid state electronic relay, usable in particular as a telegraph relay |
| FR1405994A (en) * | 1964-06-03 | 1965-07-16 | Cit Alcatel | Magnetoelectronic delay device |
| FR1500866A (en) * | 1966-06-21 | 1967-11-10 | Cit Alcatel | Electronic modulation reception device usable in particular for telegraphs |
| US3470482A (en) * | 1967-05-31 | 1969-09-30 | Westinghouse Electric Corp | Video pulse sample and hold circuitry |
-
1968
- 1968-12-23 FR FR180133A patent/FR1604879A/fr not_active Expired
-
1969
- 1969-12-05 GB GB59654/69A patent/GB1298835A/en not_active Expired
- 1969-12-12 CH CH1849469A patent/CH497824A/en not_active IP Right Cessation
- 1969-12-12 BE BE743031D patent/BE743031A/xx unknown
- 1969-12-19 SE SE17605/69A patent/SE353829B/xx unknown
- 1969-12-22 DE DE1964286A patent/DE1964286C3/en not_active Expired
- 1969-12-22 NL NL6919170.A patent/NL161640C/en not_active IP Right Cessation
- 1969-12-23 US US887502A patent/US3643026A/en not_active Expired - Lifetime
- 1969-12-23 JP JP44103120A patent/JPS5031763B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL161640C (en) | 1980-02-15 |
| JPS5031763B1 (en) | 1975-10-15 |
| SE353829B (en) | 1973-02-12 |
| DE1964286C3 (en) | 1978-09-21 |
| NL161640B (en) | 1979-09-17 |
| CH497824A (en) | 1970-10-15 |
| US3643026A (en) | 1972-02-15 |
| BE743031A (en) | 1970-06-12 |
| FR1604879A (en) | 1972-04-17 |
| DE1964286A1 (en) | 1970-07-30 |
| DE1964286B2 (en) | 1978-01-26 |
| NL6919170A (en) | 1970-06-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |