ATE16228T1 - Digitaler frequenzempfaenger. - Google Patents
Digitaler frequenzempfaenger.Info
- Publication number
- ATE16228T1 ATE16228T1 AT81401024T AT81401024T ATE16228T1 AT E16228 T1 ATE16228 T1 AT E16228T1 AT 81401024 T AT81401024 T AT 81401024T AT 81401024 T AT81401024 T AT 81401024T AT E16228 T1 ATE16228 T1 AT E16228T1
- Authority
- AT
- Austria
- Prior art keywords
- signals
- code
- pct
- digital
- receiver
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Time-Division Multiplex Systems (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8014090A FR2485843B1 (fr) | 1980-06-25 | 1980-06-25 | Recepteur numerique de frequences |
EP81401024A EP0043320B1 (de) | 1980-06-25 | 1981-06-25 | Digitaler Frequenzempfänger |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE16228T1 true ATE16228T1 (de) | 1985-11-15 |
Family
ID=9243494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT81401024T ATE16228T1 (de) | 1980-06-25 | 1981-06-25 | Digitaler frequenzempfaenger. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4510601A (de) |
EP (1) | EP0043320B1 (de) |
AT (1) | ATE16228T1 (de) |
DE (1) | DE3172701D1 (de) |
FR (1) | FR2485843B1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4370650A (en) * | 1981-04-01 | 1983-01-25 | Minnesota Mining And Manufacturing Company | Tone detection circuitry |
FR2513470B1 (fr) * | 1981-09-18 | 1986-02-21 | Cit Alcatel | Groupe d'unites de terminaux pour autocommutateur numerique |
JPS62204652A (ja) * | 1986-03-04 | 1987-09-09 | Nec Corp | 可聴周波信号識別方式 |
US5193090A (en) * | 1988-07-15 | 1993-03-09 | Janusz Filipiak | Access protection and priority control in distributed queueing |
EP0440028A3 (en) * | 1990-01-29 | 1992-07-22 | Dialogic Corporation | Multifrequency tone signal detector |
US5262957A (en) * | 1990-11-09 | 1993-11-16 | Global Communications, Inc. | Inexpensive portable RF spectrum analyzer with calibration features |
US5416836A (en) * | 1993-12-17 | 1995-05-16 | At&T Corp. | Disconnect signalling detection arrangement |
US5930308A (en) * | 1996-02-01 | 1999-07-27 | Airnet Communications Corp. | Method and apparatus for detecting signaling tones in wide-band digitized cellular-telephone signals |
US7293525B2 (en) * | 2003-08-29 | 2007-11-13 | Hdn Development Corporation | Method and apparatus for applying glaze or other coatings to food products |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1603175A (de) * | 1968-07-30 | 1971-03-22 | ||
DE2341225B2 (de) * | 1973-08-16 | 1976-10-28 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Selektiver zeichenempfaenger fuer fernmelde-, insbesondere fernsprechanlagen |
FR2269261B1 (de) * | 1974-04-24 | 1976-12-17 | Cit Alcatel | |
JPS5731716B2 (de) * | 1974-12-23 | 1982-07-06 | ||
US3937899A (en) * | 1975-01-30 | 1976-02-10 | Bell Telephone Laboratories, Incorporated | Tone detector using spectrum parameter estimation |
FR2299769A1 (fr) * | 1975-01-31 | 1976-08-27 | Telecommunications Sa | Procede d'application |
NL7511707A (nl) * | 1975-10-06 | 1977-04-12 | Philips Nv | Kruiscorrelatie-inrichting. |
IT1072242B (it) * | 1976-12-17 | 1985-04-10 | Cselt Centro Studi Lab Telecom | Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica |
FR2409652A1 (fr) * | 1977-11-18 | 1979-06-15 | Materiel Telephonique | Recepteur de signaux numeriques multifrequences codes |
NL177169B (nl) * | 1978-09-08 | 1985-03-01 | Nederlanden Staat | Inrichting om de aanwezigheid vast te stellen van een of meer van een aantal frequenties in pulscode-gemoduleerde signalen. |
JPS589626B2 (ja) * | 1978-10-06 | 1983-02-22 | 日本電信電話株式会社 | デジタル信号受信器 |
US4203008A (en) * | 1979-02-26 | 1980-05-13 | Northern Telecom Limited | Digital signalling receiver for receiving PCM tones |
US4354248A (en) * | 1979-11-28 | 1982-10-12 | Motorola, Inc. | Programmable multifrequency tone receiver |
-
1980
- 1980-06-25 FR FR8014090A patent/FR2485843B1/fr not_active Expired
-
1981
- 1981-06-25 US US06/348,543 patent/US4510601A/en not_active Expired - Fee Related
- 1981-06-25 EP EP81401024A patent/EP0043320B1/de not_active Expired
- 1981-06-25 DE DE8181401024T patent/DE3172701D1/de not_active Expired
- 1981-06-25 AT AT81401024T patent/ATE16228T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0043320B1 (de) | 1985-10-23 |
EP0043320A1 (de) | 1982-01-06 |
US4510601A (en) | 1985-04-09 |
FR2485843A1 (fr) | 1981-12-31 |
DE3172701D1 (en) | 1985-11-28 |
FR2485843B1 (fr) | 1986-11-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NZ186613A (en) | Modulated carrier wave signalling over telephone lines | |
ES8402683A1 (es) | Perfeccionamientos en aparatos de abonado para generar senales analogicas de audio frecuencia. | |
HU904933D0 (en) | Subscriber's unit for public digital radio telephone system | |
ATE16228T1 (de) | Digitaler frequenzempfaenger. | |
FR2386943A1 (fr) | Dispositif pour convertir des signaux discrets en un signal multiplex de frequence a bande laterale unique discret et vice versa | |
KR910021063A (ko) | 단일 파장 양방향 광섬유 통신 링크 | |
FI101027B (fi) | Multipleksoitu signaalimuunnos | |
FR2445665A1 (fr) | Dispositif de telecommunications hyperfrequence | |
FI60474B (fi) | Moduleringsanordning foer bildande av ett telefoni-frekvensmultiplexsystem | |
GB1373748A (en) | Subaudible remote control tone encoding system | |
MY116925A (en) | Apparatus for demodulating am data multiplexed modulated wave signal | |
JPS5539419A (en) | Supergroup translating system | |
JPS5425601A (en) | Prevention system of missing head for speech | |
SE8001315L (sv) | Signalmottagare | |
JPS56123157A (en) | Heterodyne transmitter-receiver | |
JPS53108222A (en) | Modulator circuit | |
ES493899A0 (es) | Dispositivo de conexion para una instalacion de transmision de un modulador-demodulador a un circuito telefonico | |
SU934575A1 (ru) | Устройство передачи и приема дополнительной информации в канале св зи | |
JPS56168438A (en) | Band compressing and transmitting system | |
JPS5590172A (en) | Multiplex communication system for sound signal and data for telephone call or signal for picture communication of electric communication circuit for narrow-band transmission | |
GB253697A (en) | Improvements in signalling (ringing) arrangements for carrier wave systems | |
JPS57103455A (en) | Receiving system eliminating disturbing wave | |
JPS5767339A (en) | Radio equipment | |
JPS54146508A (en) | Cordless telephone system | |
JPS5793740A (en) | Mobile communication system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |