ATA195178A - Sprachgeschuetzter frequenzselektiver zeichenempfaenger - Google Patents

Sprachgeschuetzter frequenzselektiver zeichenempfaenger

Info

Publication number
ATA195178A
ATA195178A AT0195178A AT195178A ATA195178A AT A195178 A ATA195178 A AT A195178A AT 0195178 A AT0195178 A AT 0195178A AT 195178 A AT195178 A AT 195178A AT A195178 A ATA195178 A AT A195178A
Authority
AT
Austria
Prior art keywords
frequency selective
protected frequency
selective character
character receiver
voice protected
Prior art date
Application number
AT0195178A
Other languages
English (en)
Other versions
AT370579B (de
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 ATA195178A publication Critical patent/ATA195178A/de
Application granted granted Critical
Publication of AT370579B publication Critical patent/AT370579B/de

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)
AT0195178A 1977-03-23 1978-03-20 Sprachgeschuetzter frequenzselektiver zeichenempfaenger AT370579B (de)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
ATA195178A true ATA195178A (de) 1982-08-15
AT370579B AT370579B (de) 1983-04-11

Family

ID=6004480

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0195178A AT370579B (de) 1977-03-23 1978-03-20 Sprachgeschuetzter frequenzselektiver zeichenempfaenger

Country Status (9)

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

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
NL7802771A (nl) 1978-09-26
GB1599111A (en) 1981-09-30
IT1093692B (it) 1985-07-26
DE2712847A1 (de) 1978-10-05
DE2712847B2 (de) 1979-04-12
AT370579B (de) 1983-04-11
FR2385284B1 (de) 1982-03-26
US4187403A (en) 1980-02-05
FR2385284A1 (fr) 1978-10-20

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
UEP Publication of translation of european patent specification