ATE34T1 - ECHO BLOCK - Google Patents
ECHO BLOCKInfo
- Publication number
- ATE34T1 ATE34T1 AT79101478T AT79101478T ATE34T1 AT E34 T1 ATE34 T1 AT E34T1 AT 79101478 T AT79101478 T AT 79101478T AT 79101478 T AT79101478 T AT 79101478T AT E34 T1 ATE34 T1 AT E34T1
- Authority
- AT
- Austria
- Prior art keywords
- path
- tone
- control circuit
- control
- transmitting path
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Fats And Perfumes (AREA)
- Lubricants (AREA)
- Detergent Compositions (AREA)
Abstract
1. Echo suppressor comprising a comparator circuit (8) for the level-dependent control of the transmitting path and receiving path, and a control circuit which carries out the control, and a tone receiver (15, 17, 19) which is connected at the input end to the transmitting path and receiving path and at the output end to the control circuit, for blocking the control circuit, characterised in that the input of the tone receiver (15) is connected via a change-over switch (18), which is controlled in dependence upon the output of the comparator circuit (8), to the transmitting path when a tone voltage is present on the transmitting path and to the receiving path when a tone voltage is present on the receiving path.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2821743A DE2821743C2 (en) | 1978-05-18 | 1978-05-18 | Echo lock |
| EP79101478A EP0005759B1 (en) | 1978-05-18 | 1979-05-15 | Echo suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE34T1 true ATE34T1 (en) | 1981-04-15 |
Family
ID=6039651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT79101478T ATE34T1 (en) | 1978-05-18 | 1979-05-15 | ECHO BLOCK |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0005759B1 (en) |
| AT (1) | ATE34T1 (en) |
| AU (1) | AU517093B2 (en) |
| DE (2) | DE2821743C2 (en) |
| DK (1) | DK204179A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3332006C2 (en) * | 1983-09-05 | 1987-01-15 | Hartmann & Braun Ag, 6000 Frankfurt | Bidirectional regenerator for serial pulse sequences transmitted in blocks |
-
1978
- 1978-05-18 DE DE2821743A patent/DE2821743C2/en not_active Expired
-
1979
- 1979-05-15 AT AT79101478T patent/ATE34T1/en not_active IP Right Cessation
- 1979-05-15 DE DE7979101478T patent/DE2960232D1/en not_active Expired
- 1979-05-15 EP EP79101478A patent/EP0005759B1/en not_active Expired
- 1979-05-17 AU AU47171/79A patent/AU517093B2/en not_active Ceased
- 1979-05-17 DK DK204179A patent/DK204179A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0005759A1 (en) | 1979-12-12 |
| AU4717179A (en) | 1979-11-22 |
| DE2821743C2 (en) | 1980-07-17 |
| DK204179A (en) | 1979-11-19 |
| AU517093B2 (en) | 1981-07-09 |
| DE2821743B1 (en) | 1979-11-08 |
| EP0005759B1 (en) | 1981-04-01 |
| DE2960232D1 (en) | 1981-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| REN | Ceased due to non-payment of the annual fee |