SE7504573L - Mottagare for multifrekventa signaler - Google Patents

Mottagare for multifrekventa signaler

Info

Publication number
SE7504573L
SE7504573L SE7504573A SE7504573A SE7504573L SE 7504573 L SE7504573 L SE 7504573L SE 7504573 A SE7504573 A SE 7504573A SE 7504573 A SE7504573 A SE 7504573A SE 7504573 L SE7504573 L SE 7504573L
Authority
SE
Sweden
Prior art keywords
tone
frequencies
output
filters
frequency
Prior art date
Application number
SE7504573A
Other languages
Unknown language ( )
English (en)
Inventor
C Coppens
Original Assignee
Cit Alcatel
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cit Alcatel filed Critical Cit Alcatel
Publication of SE7504573L publication Critical patent/SE7504573L/sv

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
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
SE7504573A 1974-04-24 1975-04-21 Mottagare for multifrekventa signaler SE7504573L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7414300A FR2269261B1 (sv) 1974-04-24 1974-04-24

Publications (1)

Publication Number Publication Date
SE7504573L true SE7504573L (sv) 1975-10-27

Family

ID=9138073

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7504573A SE7504573L (sv) 1974-04-24 1975-04-21 Mottagare for multifrekventa signaler

Country Status (9)

Country Link
BE (1) BE827409A (sv)
CH (1) CH592994A5 (sv)
DE (1) DE2517807A1 (sv)
FR (1) FR2269261B1 (sv)
GB (1) GB1501706A (sv)
IE (1) IE41016B1 (sv)
IT (1) IT1037582B (sv)
NL (1) NL7504828A (sv)
SE (1) SE7504573L (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370386A1 (fr) * 1976-11-05 1978-06-02 Constr Telephoniques Melangeur pour recepteur de signaux multifrequences
FR2485843B1 (fr) * 1980-06-25 1986-11-07 Cit Alcatel Recepteur numerique de frequences

Also Published As

Publication number Publication date
CH592994A5 (sv) 1977-11-15
NL7504828A (nl) 1975-10-28
DE2517807A1 (de) 1975-11-06
BE827409A (fr) 1975-10-01
IT1037582B (it) 1979-11-20
IE41016L (en) 1975-10-24
FR2269261B1 (sv) 1976-12-17
GB1501706A (en) 1978-02-22
IE41016B1 (en) 1979-09-26
FR2269261A1 (sv) 1975-11-21

Similar Documents

Publication Publication Date Title
SE7504573L (sv) Mottagare for multifrekventa signaler
GB1253031A (sv)
ES458597A1 (es) Aparato para la indicacion digital de valores de medicion y verificacion electricos.
GB1193477A (en) Improvements in or relating to Timing Information Recovery Circuits
ES456619A1 (es) Un aparato receptor perfeccionado para la detencion de al menos dos frecuencias vocales de una senal de tono.
US4539697A (en) FM Stereo demodulating circuit
GB1261837A (en) Improvements in or relating to phase detection systems
US3668327A (en) Carrier supply for multiplex communication system
SU866754A1 (ru) Приемник частотно-манипулированных сигналов
JPS57171870A (en) Signal deciding circuit for digital multifrequency signal receiver
SU913907A1 (ru) Устройство для передачи сигналов тревоги и бедствия
GB1446909A (en) Apparatus for the attenuation of undesired signals in complex- electrical signals
JPS55162607A (en) Fm demodulation circuit
JPS5634203A (en) Fm demodulator
SU924911A2 (ru) Устройство сжати полосы частот факсимильного сигнала
SU780218A1 (ru) Приемник сигналов, модулированных одновременно по частоте и по фазе
KR840002600A (ko) 동조 장치
SU944132A1 (ru) Устройство дл синхронизации многочастотных сигналов
SU611287A1 (ru) Демодул тор частотно-модулированного сигнала
SU647876A1 (ru) Устройство синхронизации
CA1146287A (en) Carrier frequency spectrum generator using logic level input pulses
SU508959A1 (ru) Устройство дл передачи дискретнойинформации
JPS5531360A (en) Demodulator circuit
GB898496A (en) Improvements in or relating to speech-signal transmission systems
SU540401A1 (ru) Приемник частотно-манипулированных сигналов

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 7504573-2