IT1061114B - Dispositivo per riconoscere criteri di codice a una o piu frequenze in una sequenza di segnali pcm - Google Patents
Dispositivo per riconoscere criteri di codice a una o piu frequenze in una sequenza di segnali pcmInfo
- Publication number
- IT1061114B IT1061114B IT24533/76A IT2453376A IT1061114B IT 1061114 B IT1061114 B IT 1061114B IT 24533/76 A IT24533/76 A IT 24533/76A IT 2453376 A IT2453376 A IT 2453376A IT 1061114 B IT1061114 B IT 1061114B
- Authority
- IT
- Italy
- Prior art keywords
- frequencies
- signal sequence
- pcm signal
- code criteria
- recognize code
- Prior art date
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH835075A CH601954A5 (sv) | 1975-06-27 | 1975-06-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1061114B true IT1061114B (it) | 1982-10-20 |
Family
ID=4338983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Country Status (8)
Country | Link |
---|---|
BE (1) | BE843439A (sv) |
CH (1) | CH601954A5 (sv) |
DE (1) | DE2621085C3 (sv) |
ES (1) | ES449293A1 (sv) |
IL (1) | IL49898A (sv) |
IT (1) | IT1061114B (sv) |
NL (1) | NL179103C (sv) |
SE (1) | SE426535B (sv) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1137632A (en) * | 1980-09-25 | 1982-12-14 | Claude J.J. Champagne | Pulse code demodulator for frequency shift keyed data |
DD266253A3 (de) * | 1987-06-22 | 1989-03-29 | Leipzig Rft Nachrichtenelekt | Universeller digitaler mfc-empfaenger |
CH678782A5 (sv) * | 1989-05-31 | 1991-10-31 | Siemens Ag Albis |
-
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/sv 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
Also Published As
Publication number | Publication date |
---|---|
IL49898A (en) | 1978-06-15 |
ES449293A1 (es) | 1977-08-16 |
DE2621085B2 (de) | 1978-06-01 |
SE426535B (sv) | 1983-01-24 |
NL179103C (nl) | 1986-07-01 |
NL179103B (nl) | 1986-02-03 |
BE843439A (fr) | 1976-10-18 |
DE2621085C3 (de) | 1979-02-01 |
NL7606786A (nl) | 1976-12-29 |
SE7607161L (sv) | 1976-12-28 |
CH601954A5 (sv) | 1978-07-14 |
IL49898A0 (en) | 1976-08-31 |
DE2621085A1 (de) | 1977-01-20 |
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