FR1409479A - émetteurs-récepteurs asservis dits transponders retransmettant des signaux produits par la station centrale - Google Patents

émetteurs-récepteurs asservis dits transponders retransmettant des signaux produits par la station centrale

Info

Publication number
FR1409479A
FR1409479A FR982977A FR982977A FR1409479A FR 1409479 A FR1409479 A FR 1409479A FR 982977 A FR982977 A FR 982977A FR 982977 A FR982977 A FR 982977A FR 1409479 A FR1409479 A FR 1409479A
Authority
FR
France
Prior art keywords
central station
signals produced
slave transceivers
retransmitting signals
called transponders
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
FR982977A
Other languages
English (en)
Inventor
Herbert W Sullivan
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.)
Skiatron Electronics and Television Corp
Original Assignee
Skiatron Electronics and Television Corp
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 Skiatron Electronics and Television Corp filed Critical Skiatron Electronics and Television Corp
Priority to FR982977A priority Critical patent/FR1409479A/fr
Application granted granted Critical
Publication of FR1409479A publication Critical patent/FR1409479A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/08—Calling by using continuous ac
    • H04Q9/12—Calling by using continuous ac using combinations of frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N2007/17372—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal the upstream transmission being initiated or timed by a signal from upstream of the user terminal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
FR982977A 1963-07-24 1964-07-24 émetteurs-récepteurs asservis dits transponders retransmettant des signaux produits par la station centrale Expired FR1409479A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR982977A FR1409479A (fr) 1963-07-24 1964-07-24 émetteurs-récepteurs asservis dits transponders retransmettant des signaux produits par la station centrale

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29739763A 1963-07-24 1963-07-24
FR982977A FR1409479A (fr) 1963-07-24 1964-07-24 émetteurs-récepteurs asservis dits transponders retransmettant des signaux produits par la station centrale

Publications (1)

Publication Number Publication Date
FR1409479A true FR1409479A (fr) 1965-08-27

Family

ID=26209067

Family Applications (1)

Application Number Title Priority Date Filing Date
FR982977A Expired FR1409479A (fr) 1963-07-24 1964-07-24 émetteurs-récepteurs asservis dits transponders retransmettant des signaux produits par la station centrale

Country Status (1)

Country Link
FR (1) FR1409479A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161122A1 (fr) * 1971-11-25 1973-07-06 Communications Patents Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161122A1 (fr) * 1971-11-25 1973-07-06 Communications Patents Ltd

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