SE418136B - Anordning for detektering av en frekvens f?711 i en signal som foreligger i en pcm-kodad form - Google Patents

Anordning for detektering av en frekvens f?711 i en signal som foreligger i en pcm-kodad form

Info

Publication number
SE418136B
SE418136B SE7806681A SE7806681A SE418136B SE 418136 B SE418136 B SE 418136B SE 7806681 A SE7806681 A SE 7806681A SE 7806681 A SE7806681 A SE 7806681A SE 418136 B SE418136 B SE 418136B
Authority
SE
Sweden
Prior art keywords
frequency
down counter
pulse
steps
signal
Prior art date
Application number
SE7806681A
Other languages
English (en)
Swedish (sv)
Other versions
SE7806681L (sv
Inventor
J Luder
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 SE7806681L publication Critical patent/SE7806681L/xx
Publication of SE418136B publication Critical patent/SE418136B/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
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/448—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal
    • H04Q1/4485—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal which is transmitted in digital form
SE7806681A 1977-06-10 1978-06-08 Anordning for detektering av en frekvens f?711 i en signal som foreligger i en pcm-kodad form SE418136B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7717814A FR2394213A1 (fr) 1977-06-10 1977-06-10 Dispositif pour la reconnaissance d'une frequence dans un signal code en mic

Publications (2)

Publication Number Publication Date
SE7806681L SE7806681L (sv) 1978-12-11
SE418136B true SE418136B (sv) 1981-05-04

Family

ID=9191938

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7806681A SE418136B (sv) 1977-06-10 1978-06-08 Anordning for detektering av en frekvens f?711 i en signal som foreligger i en pcm-kodad form

Country Status (14)

Country Link
US (1) US4194092A (fr)
JP (1) JPS545321A (fr)
BE (1) BE867445A (fr)
BR (1) BR7803730A (fr)
CA (1) CA1111588A (fr)
DE (1) DE2824565A1 (fr)
DK (1) DK259178A (fr)
FR (1) FR2394213A1 (fr)
GB (1) GB2000345B (fr)
IE (1) IE46855B1 (fr)
IT (1) IT1094884B (fr)
LU (1) LU79790A1 (fr)
NL (1) NL7806252A (fr)
SE (1) SE418136B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS558120A (en) * 1978-06-30 1980-01-21 Nec Corp Tone detection device
US4352962A (en) * 1980-06-27 1982-10-05 Reliance Electric Company Tone responsive disabling circuit
CA1137632A (fr) * 1980-09-25 1982-12-14 Claude J.J. Champagne Demodulateur de signaux modules par impulsions et codage initialement modules par deplacement de frequence
JPS60121856A (ja) * 1983-12-06 1985-06-29 Nec Corp 単一周波数信号検出回路
JPS6292553A (ja) * 1985-10-18 1987-04-28 Kokusai Denshin Denwa Co Ltd <Kdd> デイジタル伝送路の監視制御方式
US4881221A (en) * 1988-06-23 1989-11-14 Kentrox Industries, Inc. Method and apparatus for disabling an echo canceller on a digital telecommunications network
DE4119963A1 (de) * 1991-06-18 1992-12-24 Philips Patentverwaltung Echokompensator
US5404807A (en) * 1992-06-09 1995-04-11 Riso Kagaku Corporation Three dimensional image formation process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624520A (en) * 1970-01-05 1971-11-30 Frank A Perkins Jr Wide band digital phase detector
US3647993A (en) * 1970-05-18 1972-03-07 Wescom Tone disabler
US3783194A (en) * 1972-11-20 1974-01-01 Milgo Electronic Corp Data modem having a fast turn-around time over direct distance dialed networks
FR2240583B1 (fr) * 1973-08-08 1976-11-12 Cit Alcatel

Also Published As

Publication number Publication date
NL7806252A (nl) 1978-12-12
LU79790A1 (fr) 1979-02-02
IT7823972A0 (it) 1978-05-30
FR2394213B1 (fr) 1980-01-04
GB2000345B (en) 1982-01-06
CA1111588A (fr) 1981-10-27
BR7803730A (pt) 1979-02-20
BE867445A (fr) 1978-11-27
FR2394213A1 (fr) 1979-01-05
JPS6224980B2 (fr) 1987-06-01
US4194092A (en) 1980-03-18
JPS545321A (en) 1979-01-16
DE2824565A1 (de) 1978-12-21
GB2000345A (en) 1979-01-04
DE2824565C2 (fr) 1987-07-23
SE7806681L (sv) 1978-12-11
DK259178A (da) 1978-12-11
IT1094884B (it) 1985-08-10
IE781170L (en) 1978-12-10
IE46855B1 (en) 1983-10-05

Similar Documents

Publication Publication Date Title
SE418136B (sv) Anordning for detektering av en frekvens f?711 i en signal som foreligger i en pcm-kodad form
US3387282A (en) Input for digital controller
US3513302A (en) Closed loop controller having digital integrator with variable gain
SU570025A1 (ru) Устройство преобразовани частоты импульсов
SU843276A1 (ru) Устройство дл искажени стартстопногоТАКСТА
SU892412A1 (ru) Цифровой измеритель длительности пачки импульсов
SU744677A1 (ru) Устройство дл подсчета количества предметов равной массы
SU524313A1 (ru) Селектор импульсов по длительности
SU841097A1 (ru) Устройство дл задержки импульсов
SU786031A1 (ru) Устройство дл определени параметров ошибок дискретного канала св зи
SU736370A1 (ru) Конвейерно-циклический преобразователь временного интервала в цифровой код
SU1737707A2 (ru) Генератор случайного потока импульсов
SU951203A1 (ru) Измеритель динамических параметров электронных устройств
SU410362A1 (fr)
SU432415A1 (ru) Двухканальный фазометр
SU1728975A1 (ru) Устройство выбора каналов
SU1264135A1 (ru) Двухканальный врем импульсный преобразователь
SU800686A1 (ru) Многоточечный сигнализатор температуры
SU553747A1 (ru) Управл емый делитель частоты
SU739430A1 (ru) Устройство дл цифрового измерени разности частот электрических колебаний
SU1133598A2 (ru) Вычислительное устройство дл первичной обработки сигналов
SU450370A1 (ru) Счетчик импульсов с индикацией
SU1177920A1 (ru) Устройство дл измерени коэффициента ошибок в цифровых системах передачи
SU982189A1 (ru) Преобразователь частота-код
SU561186A1 (ru) Многоканальное устройство дл организации очереди

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 7806681-8

Effective date: 19950110

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 7806681-8

Format of ref document f/p: F