NL7803090A - SPEECH BLOCKED FREQUENCY SELECTIVE CHARACTER RECEIVER. - Google Patents

SPEECH BLOCKED FREQUENCY SELECTIVE CHARACTER RECEIVER.

Info

Publication number
NL7803090A
NL7803090A NL7803090A NL7803090A NL7803090A NL 7803090 A NL7803090 A NL 7803090A NL 7803090 A NL7803090 A NL 7803090A NL 7803090 A NL7803090 A NL 7803090A NL 7803090 A NL7803090 A NL 7803090A
Authority
NL
Netherlands
Prior art keywords
speech
frequency selective
selective character
blocked frequency
character receiver
Prior art date
Application number
NL7803090A
Other languages
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 NL7803090A publication Critical patent/NL7803090A/en

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)
  • Dc Digital Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)
NL7803090A 1977-03-23 1978-03-22 SPEECH BLOCKED FREQUENCY SELECTIVE CHARACTER RECEIVER. NL7803090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2712831A DE2712831B2 (en) 1977-03-23 1977-03-23 Speech-protected, frequency-selective character receiver

Publications (1)

Publication Number Publication Date
NL7803090A true NL7803090A (en) 1978-09-26

Family

ID=6004476

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7803090A NL7803090A (en) 1977-03-23 1978-03-22 SPEECH BLOCKED FREQUENCY SELECTIVE CHARACTER RECEIVER.

Country Status (6)

Country Link
JP (1) JPS53117903A (en)
DE (1) DE2712831B2 (en)
FR (1) FR2385283A1 (en)
IT (1) IT1093892B (en)
NL (1) NL7803090A (en)
SE (1) SE7803253L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL64230A0 (en) * 1981-11-06 1982-02-28 Israel Electronics Corp Tone detector
DD259987A3 (en) * 1986-07-07 1988-09-14 Rft Nachrichtenelektronik Albe METHOD AND ARRANGEMENT FOR LANGUAGE PROTECTION IN MFC-TASTWAHLMPFAENGERN
DD266253A3 (en) * 1987-06-22 1989-03-29 Leipzig Rft Nachrichtenelekt UNIVERSAL DIGITAL MFC RECEPTIONER

Also Published As

Publication number Publication date
DE2712831B2 (en) 1980-01-24
IT1093892B (en) 1985-07-26
FR2385283A1 (en) 1978-10-20
SE7803253L (en) 1978-09-24
DE2712831C3 (en) 1980-09-25
IT7821481A0 (en) 1978-03-22
DE2712831A1 (en) 1978-10-05
JPS53117903A (en) 1978-10-14

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Legal Events

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BV The patent application has lapsed