SE397461B - Frekvensselektiv signalmottagare for teleanleggningar - Google Patents

Frekvensselektiv signalmottagare for teleanleggningar

Info

Publication number
SE397461B
SE397461B SE1182472A SE1182472A SE397461B SE 397461 B SE397461 B SE 397461B SE 1182472 A SE1182472 A SE 1182472A SE 1182472 A SE1182472 A SE 1182472A SE 397461 B SE397461 B SE 397461B
Authority
SE
Sweden
Prior art keywords
telecommunications
signal receiver
frequency selective
selective signal
frequency
Prior art date
Application number
SE1182472A
Other languages
English (en)
Inventor
D Hammerl
K-D Rother
Original Assignee
Siemens Ag
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
Priority claimed from DE19712145886 external-priority patent/DE2145886C2/de
Priority claimed from DE19712156123 external-priority patent/DE2156123C2/de
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of SE397461B publication Critical patent/SE397461B/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
    • H04Q1/457—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)
  • Interface Circuits In Exchanges (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
SE1182472A 1971-09-14 1972-09-13 Frekvensselektiv signalmottagare for teleanleggningar SE397461B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712145886 DE2145886C2 (de) 1971-09-14 1971-09-14 Sprachgeschützter frequenzselektiver Zeichenempfänger für Fernmelde-, insbesondere Fernsprechanlagen
DE19712156123 DE2156123C2 (de) 1971-11-11 1971-11-11 Frequenzselektiver Zeichenempfänger für Fernmelde-, insbesondere Fernsprechanlagen

Publications (1)

Publication Number Publication Date
SE397461B true SE397461B (sv) 1977-10-31

Family

ID=25761724

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1182472A SE397461B (sv) 1971-09-14 1972-09-13 Frekvensselektiv signalmottagare for teleanleggningar

Country Status (9)

Country Link
AT (1) AT328516B (sv)
BE (1) BE788813A (sv)
CH (1) CH545569A (sv)
FR (1) FR2153943A5 (sv)
GB (1) GB1402119A (sv)
IT (1) IT967367B (sv)
LU (1) LU66057A1 (sv)
NL (1) NL7212486A (sv)
SE (1) SE397461B (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216463A (en) * 1978-08-10 1980-08-05 Motorola, Inc. Programmable digital tone detector

Also Published As

Publication number Publication date
LU66057A1 (sv) 1973-01-17
IT967367B (it) 1974-02-28
FR2153943A5 (sv) 1973-05-04
BE788813A (fr) 1973-03-14
CH545569A (sv) 1974-01-31
AT328516B (de) 1976-03-25
ATA713372A (de) 1975-06-15
NL7212486A (sv) 1973-03-16
GB1402119A (en) 1975-08-06

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