FR1536799A - System for the transmission of information in a prescribed frequency band - Google Patents

System for the transmission of information in a prescribed frequency band

Info

Publication number
FR1536799A
FR1536799A FR120983A FR120983A FR1536799A FR 1536799 A FR1536799 A FR 1536799A FR 120983 A FR120983 A FR 120983A FR 120983 A FR120983 A FR 120983A FR 1536799 A FR1536799 A FR 1536799A
Authority
FR
France
Prior art keywords
transmission
information
frequency band
prescribed frequency
prescribed
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
FR120983A
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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
Priority claimed from NL6612935A external-priority patent/NL6612935A/xx
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to FR120983A priority Critical patent/FR1536799A/en
Application granted granted Critical
Publication of FR1536799A publication Critical patent/FR1536799A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/003—Secret communication by varying carrier frequency at or within predetermined or random intervals
    • 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)
FR120983A 1966-09-14 1967-09-14 System for the transmission of information in a prescribed frequency band Expired FR1536799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR120983A FR1536799A (en) 1966-09-14 1967-09-14 System for the transmission of information in a prescribed frequency band

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6612935A NL6612935A (en) 1966-09-14 1966-09-14
FR120983A FR1536799A (en) 1966-09-14 1967-09-14 System for the transmission of information in a prescribed frequency band

Publications (1)

Publication Number Publication Date
FR1536799A true FR1536799A (en) 1968-08-16

Family

ID=26179440

Family Applications (1)

Application Number Title Priority Date Filing Date
FR120983A Expired FR1536799A (en) 1966-09-14 1967-09-14 System for the transmission of information in a prescribed frequency band

Country Status (1)

Country Link
FR (1) FR1536799A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416597A1 (en) * 1971-12-09 1979-08-31 Berger Claude Signal coding system for secret transmission - uses transposition of signal frequency with applied pseudo-random bias using locally generated analog signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416597A1 (en) * 1971-12-09 1979-08-31 Berger Claude Signal coding system for secret transmission - uses transposition of signal frequency with applied pseudo-random bias using locally generated analog signal

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