NL7802771A - Voor spraak geblokkeerde frequentie selectieve tekenontvanger. - Google Patents

Voor spraak geblokkeerde frequentie selectieve tekenontvanger.

Info

Publication number
NL7802771A
NL7802771A NL7802771A NL7802771A NL7802771A NL 7802771 A NL7802771 A NL 7802771A NL 7802771 A NL7802771 A NL 7802771A NL 7802771 A NL7802771 A NL 7802771A NL 7802771 A NL7802771 A NL 7802771A
Authority
NL
Netherlands
Prior art keywords
speech
frequency selective
selective character
blocked frequency
character receiver
Prior art date
Application number
NL7802771A
Other languages
English (en)
Dutch (nl)
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
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of NL7802771A publication Critical patent/NL7802771A/xx

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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Dc Digital Transmission (AREA)
  • Circuits Of Receivers In General (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
NL7802771A 1977-03-23 1978-03-14 Voor spraak geblokkeerde frequentie selectieve tekenontvanger. NL7802771A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2712847A DE2712847C3 (de) 1977-03-23 1977-03-23 Sprachgeschützter frequenzselektiver Zeichenempfänger

Publications (1)

Publication Number Publication Date
NL7802771A true NL7802771A (nl) 1978-09-26

Family

ID=6004480

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7802771A NL7802771A (nl) 1977-03-23 1978-03-14 Voor spraak geblokkeerde frequentie selectieve tekenontvanger.

Country Status (9)

Country Link
US (1) US4187403A (xx)
JP (1) JPS53117902A (xx)
AT (1) AT370579B (xx)
DE (1) DE2712847C3 (xx)
FR (1) FR2385284A1 (xx)
GB (1) GB1599111A (xx)
IT (1) IT1093692B (xx)
NL (1) NL7802771A (xx)
SE (1) SE7803252L (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2921899A1 (de) * 1979-05-30 1980-12-04 Nord Micro Elektronik Feinmech Verfahren zur frequenzmessung
DD259987A3 (de) * 1986-07-07 1988-09-14 Rft Nachrichtenelektronik Albe Verfahren und anordnung zum sprachschutz in mfc-tastwahlempfaengern
DD266253A3 (de) * 1987-06-22 1989-03-29 Leipzig Rft Nachrichtenelekt Universeller digitaler mfc-empfaenger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537001A (en) * 1968-12-05 1970-10-27 Bell Telephone Labor Inc Multifrequency tone detector
DE2116635C3 (de) * 1971-04-05 1978-10-05 Ibm Deutschland Gmbh, 7000 Stuttgart Verfahren zur digitalen Decodierung frequenzcodierter Signale und Schaltungsanordnung zur Durchführung des Verfahrens
DE2422840A1 (de) * 1974-05-10 1975-12-11 Standard Elektrik Lorenz Ag Frequenzselektiver signalempfaenger

Also Published As

Publication number Publication date
DE2712847C3 (de) 1979-12-06
SE7803252L (sv) 1978-09-24
IT7821472A0 (it) 1978-03-22
JPS53117902A (en) 1978-10-14
GB1599111A (en) 1981-09-30
ATA195178A (de) 1982-08-15
IT1093692B (it) 1985-07-26
DE2712847A1 (de) 1978-10-05
DE2712847B2 (de) 1979-04-12
AT370579B (de) 1983-04-11
FR2385284B1 (xx) 1982-03-26
US4187403A (en) 1980-02-05
FR2385284A1 (fr) 1978-10-20

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Legal Events

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