SE384619B - Anordning for digital avkodning av frekvenskodade signaler med skydd mot tal- och storkomponenter - Google Patents
Anordning for digital avkodning av frekvenskodade signaler med skydd mot tal- och storkomponenterInfo
- Publication number
- SE384619B SE384619B SE282972A SE282972A SE384619B SE 384619 B SE384619 B SE 384619B SE 282972 A SE282972 A SE 282972A SE 282972 A SE282972 A SE 282972A SE 384619 B SE384619 B SE 384619B
- Authority
- SE
- Sweden
- Prior art keywords
- protection against
- decoding device
- coded signals
- large components
- digital decoding
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Noise Elimination (AREA)
- Analogue/Digital Conversion (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712116635 DE2116635C3 (de) | 1971-04-05 | 1971-04-05 | Verfahren zur digitalen Decodierung frequenzcodierter Signale und Schaltungsanordnung zur Durchführung des Verfahrens |
Publications (1)
Publication Number | Publication Date |
---|---|
SE384619B true SE384619B (sv) | 1976-05-10 |
Family
ID=5803944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE282972A SE384619B (sv) | 1971-04-05 | 1972-03-06 | Anordning for digital avkodning av frekvenskodade signaler med skydd mot tal- och storkomponenter |
Country Status (11)
Country | Link |
---|---|
JP (1) | JPS5317015B1 (sv) |
BR (2) | BR7101977D0 (sv) |
CA (1) | CA974645A (sv) |
CH (1) | CH540622A (sv) |
DE (1) | DE2116635C3 (sv) |
ES (2) | ES401435A1 (sv) |
FR (1) | FR2132303B1 (sv) |
GB (1) | GB1364773A (sv) |
IT (1) | IT947887B (sv) |
NL (1) | NL167827C (sv) |
SE (1) | SE384619B (sv) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3936801A (en) * | 1974-09-12 | 1976-02-03 | Bell Telephone Laboratories, Incorporated | Multifrequency signal receiver timing circuit |
CA1031086A (en) * | 1976-03-03 | 1978-05-09 | Northern Electric Company | Method and apparatus for translating multiple frequency signalling |
DE2712847C3 (de) * | 1977-03-23 | 1979-12-06 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Sprachgeschützter frequenzselektiver Zeichenempfänger |
US4328398A (en) * | 1979-05-22 | 1982-05-04 | Oki Electric Industry Co., Ltd. | Digital multi-frequency receiver |
DE3026016C2 (de) * | 1980-07-09 | 1984-12-13 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur Demodulation von Frequenzgemischen, die an einer Zentralstation empfangen werden |
DE3115151A1 (de) * | 1981-04-15 | 1982-11-11 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltungsanordnung zur auswertung von aus mehreren gleichzeitig uebertragenen wechselstroemen unterschiedlicher signalfrequenzen gebildeten wechselstromsignalen, in fernmeldeanlagen |
SE9202065L (sv) * | 1992-07-03 | 1994-01-04 | Ericsson Telefon Ab L M | Sätt att förbättra mottagarens känslighet och talimmuniteten vid DTMF-mottagning |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1511133A (fr) * | 1966-12-16 | 1968-01-26 | Ass Ouvriers Instr Precision | Procédé d'identification de chacune des fréquences d'un groupe de plusieurs fréquences déterminées et appareil récepteur pour la mise en oeuvre de ce procédé |
NL6712685A (sv) * | 1967-09-15 | 1969-03-18 |
-
1971
- 1971-04-05 BR BR197771A patent/BR7101977D0/pt unknown
- 1971-04-05 DE DE19712116635 patent/DE2116635C3/de not_active Expired
-
1972
- 1972-02-25 IT IT2101672A patent/IT947887B/it active
- 1972-03-06 SE SE282972A patent/SE384619B/sv unknown
- 1972-03-16 GB GB1222972A patent/GB1364773A/en not_active Expired
- 1972-03-23 CH CH436872A patent/CH540622A/de not_active IP Right Cessation
- 1972-03-28 FR FR7211397A patent/FR2132303B1/fr not_active Expired
- 1972-03-29 CA CA138,503A patent/CA974645A/en not_active Expired
- 1972-03-29 NL NL7204207A patent/NL167827C/xx not_active IP Right Cessation
- 1972-04-03 JP JP3271072A patent/JPS5317015B1/ja active Pending
- 1972-04-04 ES ES401435A patent/ES401435A1/es not_active Expired
- 1972-04-04 ES ES401437A patent/ES401437A1/es not_active Expired
- 1972-04-05 BR BR197772A patent/BR7201977D0/pt unknown
Also Published As
Publication number | Publication date |
---|---|
DE2116635B2 (de) | 1973-10-04 |
JPS5317015B1 (sv) | 1978-06-05 |
FR2132303B1 (sv) | 1974-08-02 |
DE2116635A1 (de) | 1972-10-19 |
ES401435A1 (es) | 1975-02-16 |
NL167827C (nl) | 1982-01-18 |
BR7101977D0 (pt) | 1973-06-14 |
CH540622A (de) | 1973-08-15 |
BR7201977D0 (pt) | 1974-11-12 |
DE2116635C3 (de) | 1978-10-05 |
CA974645A (en) | 1975-09-16 |
IT947887B (it) | 1973-05-30 |
ES401437A1 (es) | 1975-10-01 |
GB1364773A (en) | 1974-08-29 |
NL7204207A (sv) | 1972-10-09 |
FR2132303A1 (sv) | 1972-11-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS53149717A (en) | Method of and device for decoding digital signal | |
BE787198A (fr) | Composes et melanges nematiques | |
SE404118B (sv) | Modulations- och filtreringsanordning for digitala signaler | |
IT955538B (it) | Metodo ed apparecchiatura per codificare e decodificare video segnali | |
AT342378B (de) | Permanentmagnetisches schneckengetriebe | |
AT343926B (de) | Aufnahme- und/oder wiedergabegerat der kassettenbauart | |
IT967315B (it) | Amniotomo digitale | |
SE385074B (sv) | Redundansminskande anordning och redundansminskande mottagningsanordning anordnad att samverka med denna | |
SE380954B (sv) | Kopplingsanordning for alstring av en sekvens av binera signaler | |
NO142797C (no) | Kodegenerator for slumpmessige digitale signaler | |
IT968235B (it) | Procedimento ed apparecchiatura per disidbatare fanghi | |
SE384619B (sv) | Anordning for digital avkodning av frekvenskodade signaler med skydd mot tal- och storkomponenter | |
BE792988A (fr) | Dispositif numerique | |
BE778296A (fr) | Matrices perfectionnees de codage et de decodage pour enregistrements quadriphoniques | |
IT1045667B (it) | Rompigetto con filtro e aeratore per rubinetti | |
BE781628A (fr) | Convertisseur de signal numerique module en delta | |
AT328202B (de) | Aufzeichnungs- und/oder wiedergabegerat | |
AT315528B (de) | Aufzeichnungs- und/oder Wiedergabegerät | |
AT314219B (de) | Aufzeichnungs- und/oder Wiedergabegerät | |
AT311693B (de) | Aufzeichnungs- und/oder Wiedergabegerät | |
DK144966C (da) | Reproduktions- og samleapparat | |
ATA685272A (de) | Aufnahme- und wiedergabegerat | |
IT968978B (it) | Composti macrociclici e procedi menti per prepararli | |
ZA717571B (en) | Morpholineamide of l-cyanoacrylates and polymers thereof | |
BE785181A (fr) | Recepteur video numerique |