JPS53117903A - Frequency selecting code secret receiver - Google Patents

Frequency selecting code secret receiver

Info

Publication number
JPS53117903A
JPS53117903A JP3356778A JP3356778A JPS53117903A JP S53117903 A JPS53117903 A JP S53117903A JP 3356778 A JP3356778 A JP 3356778A JP 3356778 A JP3356778 A JP 3356778A JP S53117903 A JPS53117903 A JP S53117903A
Authority
JP
Japan
Prior art keywords
frequency selecting
selecting code
code secret
secret receiver
receiver
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP3356778A
Other languages
English (en)
Inventor
Asuto Rainhooruto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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 JPS53117903A publication Critical patent/JPS53117903A/ja
Pending legal-status Critical Current

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)
JP3356778A 1977-03-23 1978-03-23 Frequency selecting code secret receiver Pending JPS53117903A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2712831A DE2712831B2 (de) 1977-03-23 1977-03-23 Sprachgeschützter frequenzselektiver Zeichenempfänger

Publications (1)

Publication Number Publication Date
JPS53117903A true JPS53117903A (en) 1978-10-14

Family

ID=6004476

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3356778A Pending JPS53117903A (en) 1977-03-23 1978-03-23 Frequency selecting code secret receiver

Country Status (6)

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

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 (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

Also Published As

Publication number Publication date
NL7803090A (nl) 1978-09-26
DE2712831B2 (de) 1980-01-24
IT1093892B (it) 1985-07-26
FR2385283A1 (fr) 1978-10-20
SE7803253L (sv) 1978-09-24
DE2712831C3 (ja) 1980-09-25
IT7821481A0 (it) 1978-03-22
DE2712831A1 (de) 1978-10-05

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