DE2148639A1 - - Google Patents

Info

Publication number
DE2148639A1
DE2148639A1 DE19712148639 DE2148639A DE2148639A1 DE 2148639 A1 DE2148639 A1 DE 2148639A1 DE 19712148639 DE19712148639 DE 19712148639 DE 2148639 A DE2148639 A DE 2148639A DE 2148639 A1 DE2148639 A1 DE 2148639A1
Authority
DE
Germany
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.)
Granted
Application number
DE19712148639
Other languages
German (de)
Other versions
DE2148639C2 (de
DE2148639B1 (de
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 filed Critical
Priority to DE19712148639 priority Critical patent/DE2148639C2/de
Publication of DE2148639A1 publication Critical patent/DE2148639A1/de
Publication of DE2148639B1 publication Critical patent/DE2148639B1/de
Application granted granted Critical
Publication of DE2148639C2 publication Critical patent/DE2148639C2/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DE19712148639 1971-09-29 1971-09-29 Einrichtung zur verschleierten Über tragung von Sprachsignalen Expired DE2148639C2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712148639 DE2148639C2 (de) 1971-09-29 1971-09-29 Einrichtung zur verschleierten Über tragung von Sprachsignalen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712148639 DE2148639C2 (de) 1971-09-29 1971-09-29 Einrichtung zur verschleierten Über tragung von Sprachsignalen

Publications (3)

Publication Number Publication Date
DE2148639A1 true DE2148639A1 (enExample) 1973-03-29
DE2148639B1 DE2148639B1 (de) 1973-03-29
DE2148639C2 DE2148639C2 (de) 1973-10-18

Family

ID=5820942

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712148639 Expired DE2148639C2 (de) 1971-09-29 1971-09-29 Einrichtung zur verschleierten Über tragung von Sprachsignalen

Country Status (1)

Country Link
DE (1) DE2148639C2 (enExample)

Also Published As

Publication number Publication date
DE2148639C2 (de) 1973-10-18
DE2148639B1 (de) 1973-03-29

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee