CH601954A5 - - Google Patents
Info
- Publication number
- CH601954A5 CH601954A5 CH835075A CH835075A CH601954A5 CH 601954 A5 CH601954 A5 CH 601954A5 CH 835075 A CH835075 A CH 835075A CH 835075 A CH835075 A CH 835075A CH 601954 A5 CH601954 A5 CH 601954A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
- H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Time-Division Multiplex Systems (AREA)
- Dc Digital Transmission (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH835075A CH601954A5 (US20100268047A1-20101021-C00004.png) | 1975-06-27 | 1975-06-27 | |
| DE2621085A DE2621085C3 (de) | 1975-06-27 | 1976-05-12 | Verfahren zum Erkennen von Ein- oder Mehrfrequenzcodezeichen aus einer Folge von PCM-Signalen |
| IT24533/76A IT1061114B (it) | 1975-06-27 | 1976-06-22 | Dispositivo per riconoscere criteri di codice a una o piu frequenze in una sequenza di segnali pcm |
| SE7607161A SE426535B (sv) | 1975-06-27 | 1976-06-22 | Kopplingsanordning for detektering av en -eller flerfrekvenskodtecken ur en foljd av pcm-signaler |
| NLAANVRAGE7606786,A NL179103C (nl) | 1975-06-27 | 1976-06-22 | Inrichting voor het herkennen van frequentiecodesignalen uit een volgorde van pcm-woorden. |
| IL49898A IL49898A (en) | 1975-06-27 | 1976-06-24 | Method of recognizhing single or multiple frequency code signals emanating from a succession of pcm-signals |
| BE168341A BE843439A (fr) | 1975-06-27 | 1976-06-25 | Procede d'indentification de signes de code dans une succession de signaux a modulation par impulsions codees |
| ES449293A ES449293A1 (es) | 1975-06-27 | 1976-06-26 | Un metodo para reconocer las senales en codigo de mono o multifrecuencia en un flujo de senales de modulacion por im-pulsos codificada. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH835075A CH601954A5 (US20100268047A1-20101021-C00004.png) | 1975-06-27 | 1975-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH601954A5 true CH601954A5 (US20100268047A1-20101021-C00004.png) | 1978-07-14 |
Family
ID=4338983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH835075A CH601954A5 (US20100268047A1-20101021-C00004.png) | 1975-06-27 | 1975-06-27 |
Country Status (8)
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049059A2 (en) * | 1980-09-25 | 1982-04-07 | Northern Telecom Limited | Pulse code demodulator for frequency shift keyed data |
| DE4005027A1 (de) * | 1989-05-31 | 1990-12-06 | Siemens Ag Albis | Verfahren zum empfangen von leitungszeichen in einer fernmelde-, insbesondere fernsprechvermittlungsanlage |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD266253A3 (de) * | 1987-06-22 | 1989-03-29 | Leipzig Rft Nachrichtenelekt | Universeller digitaler mfc-empfaenger |
-
1975
- 1975-06-27 CH CH835075A patent/CH601954A5/xx not_active IP Right Cessation
-
1976
- 1976-05-12 DE DE2621085A patent/DE2621085C3/de not_active Expired
- 1976-06-22 IT IT24533/76A patent/IT1061114B/it active
- 1976-06-22 SE SE7607161A patent/SE426535B/xx not_active IP Right Cessation
- 1976-06-22 NL NLAANVRAGE7606786,A patent/NL179103C/xx not_active IP Right Cessation
- 1976-06-24 IL IL49898A patent/IL49898A/xx unknown
- 1976-06-25 BE BE168341A patent/BE843439A/xx not_active IP Right Cessation
- 1976-06-26 ES ES449293A patent/ES449293A1/es not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049059A2 (en) * | 1980-09-25 | 1982-04-07 | Northern Telecom Limited | Pulse code demodulator for frequency shift keyed data |
| EP0049059A3 (en) * | 1980-09-25 | 1982-12-01 | Northern Telecom Limited | Pulse code demodulator for frequency shift keyed data |
| DE4005027A1 (de) * | 1989-05-31 | 1990-12-06 | Siemens Ag Albis | Verfahren zum empfangen von leitungszeichen in einer fernmelde-, insbesondere fernsprechvermittlungsanlage |
Also Published As
| Publication number | Publication date |
|---|---|
| ES449293A1 (es) | 1977-08-16 |
| DE2621085C3 (de) | 1979-02-01 |
| NL7606786A (nl) | 1976-12-29 |
| IT1061114B (it) | 1982-10-20 |
| IL49898A (en) | 1978-06-15 |
| NL179103B (nl) | 1986-02-03 |
| IL49898A0 (en) | 1976-08-31 |
| SE7607161L (sv) | 1976-12-28 |
| DE2621085A1 (de) | 1977-01-20 |
| SE426535B (sv) | 1983-01-24 |
| DE2621085B2 (de) | 1978-06-01 |
| BE843439A (fr) | 1976-10-18 |
| NL179103C (nl) | 1986-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |