DK231282A - PROCEDURES FOR FREQUENCY REPLACEMENT OF DELBAND - Google Patents

PROCEDURES FOR FREQUENCY REPLACEMENT OF DELBAND Download PDF

Info

Publication number
DK231282A
DK231282A DK231282A DK231282A DK231282A DK 231282 A DK231282 A DK 231282A DK 231282 A DK231282 A DK 231282A DK 231282 A DK231282 A DK 231282A DK 231282 A DK231282 A DK 231282A
Authority
DK
Denmark
Prior art keywords
delband
procedures
frequency replacement
replacement
frequency
Prior art date
Application number
DK231282A
Other languages
Danish (da)
Other versions
DK151996B (en
Inventor
H Goeckler
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of DK231282A publication Critical patent/DK231282A/en
Publication of DK151996B publication Critical patent/DK151996B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • H04J1/05—Frequency-transposition arrangements using digital techniques
    • 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)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Amplitude Modulation (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DK231282A 1981-05-22 1982-05-21 PROCEDURES FOR FREQUENCY REPLACEMENT OF DELBAND DK151996B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813120445 DE3120445A1 (en) 1981-05-22 1981-05-22 METHOD FOR FREQUENCY EXCHANGE OF SUB BANDS
DE3120445 1981-05-22

Publications (2)

Publication Number Publication Date
DK231282A true DK231282A (en) 1982-11-23
DK151996B DK151996B (en) 1988-01-18

Family

ID=6133012

Family Applications (1)

Application Number Title Priority Date Filing Date
DK231282A DK151996B (en) 1981-05-22 1982-05-21 PROCEDURES FOR FREQUENCY REPLACEMENT OF DELBAND

Country Status (4)

Country Link
EP (1) EP0065648B1 (en)
CA (1) CA1184608A (en)
DE (2) DE3120445A1 (en)
DK (1) DK151996B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3120357A1 (en) * 1981-05-22 1982-12-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt METHOD FOR EXCHANGING N SUBBANDS
US5796838A (en) * 1996-08-02 1998-08-18 Transcrypt International, Inc. Method and apparatus for performing frequency spectrum inversion

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2191826A5 (en) * 1972-07-03 1974-02-01 Cit Alcatel
DE2652607A1 (en) * 1976-11-19 1978-05-24 Licentia Gmbh Analogue information signal encoder - includes array of ring modulators and stores time and frequency multiplexed elements in digital form

Also Published As

Publication number Publication date
CA1184608A (en) 1985-03-26
DE3120445A1 (en) 1983-05-26
EP0065648A1 (en) 1982-12-01
DK151996B (en) 1988-01-18
EP0065648B1 (en) 1985-08-28
DE3265759D1 (en) 1985-10-03

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Legal Events

Date Code Title Description
PTS Application withdrawn