NO770696L - Fremgangsm}te og apparat for dekoding av signaler med flere frekvenser - Google Patents
Fremgangsm}te og apparat for dekoding av signaler med flere frekvenserInfo
- Publication number
- NO770696L NO770696L NO770696A NO770696A NO770696L NO 770696 L NO770696 L NO 770696L NO 770696 A NO770696 A NO 770696A NO 770696 A NO770696 A NO 770696A NO 770696 L NO770696 L NO 770696L
- Authority
- NO
- Norway
- Prior art keywords
- frequency band
- signals
- low
- frequency
- band
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims 2
- 230000011664 signaling Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 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)
- Stereo-Broadcasting Methods (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA247,035A CA1031086A (en) | 1976-03-03 | 1976-03-03 | Method and apparatus for translating multiple frequency signalling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO770696L true NO770696L (no) | 1977-09-06 |
Family
ID=4105372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO770696A NO770696L (no) | 1976-03-03 | 1977-03-01 | Fremgangsm}te og apparat for dekoding av signaler med flere frekvenser |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS52107708A (sv) |
| AU (1) | AU508271B2 (sv) |
| BE (1) | BE852056A (sv) |
| CA (1) | CA1031086A (sv) |
| DE (1) | DE2709370A1 (sv) |
| DK (1) | DK88877A (sv) |
| FR (1) | FR2343377A1 (sv) |
| GB (1) | GB1532103A (sv) |
| NL (1) | NL186057C (sv) |
| NO (1) | NO770696L (sv) |
| SE (1) | SE424129B (sv) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831140B2 (ja) * | 1978-11-10 | 1983-07-04 | 株式会社日立製作所 | 信号受信器 |
| DE3629907A1 (de) * | 1986-09-03 | 1988-03-10 | Standard Elektrik Lorenz Ag | Signalisierungsempfaenger |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3710031A (en) * | 1970-12-23 | 1973-01-09 | Itt | Multi frequency receiver |
| FR2127450A5 (sv) * | 1971-03-03 | 1972-10-13 | Ibm France | |
| DE2116635C3 (de) * | 1971-04-05 | 1978-10-05 | Ibm Deutschland Gmbh, 7000 Stuttgart | Verfahren zur digitalen Decodierung frequenzcodierter Signale und Schaltungsanordnung zur Durchführung des Verfahrens |
| CA976675A (en) * | 1972-10-16 | 1975-10-21 | Microsystems International Limited | Dual tone receiver |
| US3914557A (en) * | 1973-04-11 | 1975-10-21 | Bell Telephone Labor Inc | Multifrequency tone detecting arrangement |
| US3936801A (en) * | 1974-09-12 | 1976-02-03 | Bell Telephone Laboratories, Incorporated | Multifrequency signal receiver timing circuit |
-
1976
- 1976-03-03 CA CA247,035A patent/CA1031086A/en not_active Expired
-
1977
- 1977-02-18 AU AU22448/77A patent/AU508271B2/en not_active Expired
- 1977-02-23 GB GB7674/77A patent/GB1532103A/en not_active Expired
- 1977-03-01 NO NO770696A patent/NO770696L/no unknown
- 1977-03-01 JP JP2092077A patent/JPS52107708A/ja active Pending
- 1977-03-01 DK DK88877A patent/DK88877A/da not_active Application Discontinuation
- 1977-03-02 NL NLAANVRAGE7702219,A patent/NL186057C/xx not_active IP Right Cessation
- 1977-03-03 DE DE19772709370 patent/DE2709370A1/de not_active Ceased
- 1977-03-03 FR FR7706234A patent/FR2343377A1/fr active Granted
- 1977-03-03 BE BE175450A patent/BE852056A/xx unknown
- 1977-03-03 SE SE7702418A patent/SE424129B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL7702219A (nl) | 1977-09-06 |
| FR2343377A1 (fr) | 1977-09-30 |
| DE2709370A1 (de) | 1977-09-08 |
| JPS52107708A (en) | 1977-09-09 |
| FR2343377B1 (sv) | 1983-08-12 |
| CA1031086A (en) | 1978-05-09 |
| SE7702418L (sv) | 1977-09-04 |
| BE852056A (fr) | 1977-07-01 |
| NL186057B (nl) | 1990-04-02 |
| GB1532103A (en) | 1978-11-15 |
| SE424129B (sv) | 1982-06-28 |
| NL186057C (nl) | 1990-09-03 |
| AU508271B2 (en) | 1980-03-13 |
| AU2244877A (en) | 1978-08-24 |
| DK88877A (da) | 1977-09-04 |
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