ES467884A1 - Equipo codificador y descodificador de senales electricas comprendidas en una banda de frecuencia predeterminada. - Google Patents

Equipo codificador y descodificador de senales electricas comprendidas en una banda de frecuencia predeterminada.

Info

Publication number
ES467884A1
ES467884A1 ES467884A ES467884A ES467884A1 ES 467884 A1 ES467884 A1 ES 467884A1 ES 467884 A ES467884 A ES 467884A ES 467884 A ES467884 A ES 467884A ES 467884 A1 ES467884 A1 ES 467884A1
Authority
ES
Spain
Prior art keywords
portions
translation
electrical signals
frequency band
machine
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.)
Expired
Application number
ES467884A
Other languages
English (en)
Spanish (es)
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.)
Mineralbewertung & Handel AG
Original Assignee
Mineralbewertung & Handel 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 Mineralbewertung & Handel AG filed Critical Mineralbewertung & Handel AG
Publication of ES467884A1 publication Critical patent/ES467884A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/06—Secret communication by transmitting the information or elements thereof at unnatural speeds or in jumbled order or backwards

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
ES467884A 1977-03-15 1978-03-15 Equipo codificador y descodificador de senales electricas comprendidas en una banda de frecuencia predeterminada. Expired ES467884A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH322277A CH621899A5 (en) 1977-03-15 1977-03-15 Encoding and decoding apparatus for the protection of the secrecy of communications

Publications (1)

Publication Number Publication Date
ES467884A1 true ES467884A1 (es) 1978-11-01

Family

ID=4251280

Family Applications (1)

Application Number Title Priority Date Filing Date
ES467884A Expired ES467884A1 (es) 1977-03-15 1978-03-15 Equipo codificador y descodificador de senales electricas comprendidas en una banda de frecuencia predeterminada.

Country Status (4)

Country Link
CH (1) CH621899A5 (it)
ES (1) ES467884A1 (it)
FI (1) FI72240C (it)
IT (1) IT1094268B (it)

Also Published As

Publication number Publication date
CH621899A5 (en) 1981-02-27
FI780648A (fi) 1978-09-16
IT1094268B (it) 1985-07-26
IT7821089A0 (it) 1978-03-10
FI72240B (fi) 1986-12-31
FI72240C (fi) 1987-04-13

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971001