CA1078980A - Circuit arrangement for a digital multifrequency-signal receiver - Google Patents
Circuit arrangement for a digital multifrequency-signal receiverInfo
- Publication number
- CA1078980A CA1078980A CA266,460A CA266460A CA1078980A CA 1078980 A CA1078980 A CA 1078980A CA 266460 A CA266460 A CA 266460A CA 1078980 A CA1078980 A CA 1078980A
- Authority
- CA
- Canada
- Prior art keywords
- circuit means
- signal
- output terminal
- input
- coupled
- 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
- 238000001514 detection method Methods 0.000 claims abstract 2
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- 238000000034 method Methods 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 2
- 101150087426 Gnal gene Proteins 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Telephone Function (AREA)
- Electronic Switches (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2553258A DE2553258C3 (de) | 1975-11-27 | 1975-11-27 | Schaltungsanordnung für einen digitalen Mehrfrequenz-Zeichenempfänger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1078980A true CA1078980A (en) | 1980-06-03 |
Family
ID=5962770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA266,460A Expired CA1078980A (en) | 1975-11-27 | 1976-11-24 | Circuit arrangement for a digital multifrequency-signal receiver |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE848776R (enExample) |
| CA (1) | CA1078980A (enExample) |
| CH (1) | CH601955A5 (enExample) |
| DE (1) | DE2553258C3 (enExample) |
| ES (1) | ES453636A1 (enExample) |
| FR (1) | FR2333398A1 (enExample) |
| GB (1) | GB1545254A (enExample) |
| ZA (1) | ZA766727B (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7903346A (nl) * | 1979-04-27 | 1980-10-29 | Bell Telephone Mfg | Digitaal signaleringsstelsel. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3912869A (en) * | 1973-11-21 | 1975-10-14 | Tel Tone Corp | Multifrequency-to-digital converter |
-
1975
- 1975-11-27 DE DE2553258A patent/DE2553258C3/de not_active Expired
-
1976
- 1976-11-10 ZA ZA766727A patent/ZA766727B/xx unknown
- 1976-11-17 FR FR7634661A patent/FR2333398A1/fr active Granted
- 1976-11-23 GB GB48774/76A patent/GB1545254A/en not_active Expired
- 1976-11-24 CA CA266,460A patent/CA1078980A/en not_active Expired
- 1976-11-25 ES ES453636A patent/ES453636A1/es not_active Expired
- 1976-11-25 CH CH1482876A patent/CH601955A5/xx not_active IP Right Cessation
- 1976-11-26 BE BE2055485A patent/BE848776R/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| GB1545254A (en) | 1979-05-02 |
| ZA766727B (en) | 1977-10-26 |
| DE2553258C3 (de) | 1980-07-03 |
| ES453636A1 (es) | 1977-11-16 |
| FR2333398B1 (enExample) | 1982-10-22 |
| DE2553258B2 (de) | 1979-10-25 |
| BE848776R (fr) | 1977-05-26 |
| CH601955A5 (enExample) | 1978-07-14 |
| DE2553258A1 (de) | 1977-06-02 |
| FR2333398A1 (fr) | 1977-06-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |