CS471987A1 - Method and device for receivers' protection from interfering signals - Google Patents

Method and device for receivers' protection from interfering signals

Info

Publication number
CS471987A1
CS471987A1 CS874719A CS471987A CS471987A1 CS 471987 A1 CS471987 A1 CS 471987A1 CS 874719 A CS874719 A CS 874719A CS 471987 A CS471987 A CS 471987A CS 471987 A1 CS471987 A1 CS 471987A1
Authority
CS
Czechoslovakia
Prior art keywords
receivers
protection
interfering signals
interfering
signals
Prior art date
Application number
CS874719A
Other languages
English (en)
Inventor
Johannes Schuchart
Peter Dr Ing Lenz
Original Assignee
Johannes Schuchart
Peter Dr Ing Lenz
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 Johannes Schuchart, Peter Dr Ing Lenz filed Critical Johannes Schuchart
Publication of CS471987A1 publication Critical patent/CS471987A1/cs

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
    • H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
CS874719A 1986-07-07 1987-06-25 Method and device for receivers' protection from interfering signals CS471987A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD29222486A DD259987A3 (de) 1986-07-07 1986-07-07 Verfahren und anordnung zum sprachschutz in mfc-tastwahlempfaengern

Publications (1)

Publication Number Publication Date
CS471987A1 true CS471987A1 (en) 1989-09-12

Family

ID=5580693

Family Applications (1)

Application Number Title Priority Date Filing Date
CS874719A CS471987A1 (en) 1986-07-07 1987-06-25 Method and device for receivers' protection from interfering signals

Country Status (5)

Country Link
BG (1) BG49039A1 (cs)
CS (1) CS471987A1 (cs)
DD (1) DD259987A3 (cs)
DE (1) DE3717937A1 (cs)
HU (1) HU196541B (cs)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2141502B1 (cs) * 1971-06-01 1973-06-29 Ibm France
DE2517024C3 (de) * 1975-04-17 1978-03-02 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung für einen Signalempfänger zum Sperren von Signalen, deren Pegel schwankt
DE2712847C3 (de) * 1977-03-23 1979-12-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Sprachgeschützter frequenzselektiver Zeichenempfänger
DE2712831B2 (de) * 1977-03-23 1980-01-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Sprachgeschützter frequenzselektiver Zeichenempfänger
NL7903346A (nl) * 1979-04-27 1980-10-29 Bell Telephone Mfg Digitaal signaleringsstelsel.

Also Published As

Publication number Publication date
DE3717937C2 (cs) 1989-08-10
DD259987A3 (de) 1988-09-14
BG49039A1 (en) 1991-07-15
HU196541B (en) 1988-11-28
DE3717937A1 (de) 1988-01-28
HUT44882A (en) 1988-04-28

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