IT973721B - Perfezionamenti nei sistemi di filodiffusione o relativi as esso - Google Patents

Perfezionamenti nei sistemi di filodiffusione o relativi as esso

Info

Publication number
IT973721B
IT973721B IT54267/72A IT5426772A IT973721B IT 973721 B IT973721 B IT 973721B IT 54267/72 A IT54267/72 A IT 54267/72A IT 5426772 A IT5426772 A IT 5426772A IT 973721 B IT973721 B IT 973721B
Authority
IT
Italy
Prior art keywords
systems
wire brought
brought
wire
brought systems
Prior art date
Application number
IT54267/72A
Other languages
English (en)
Inventor
E Gargini
Original Assignee
Communications Patents Ltd
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 Communications Patents Ltd filed Critical Communications Patents Ltd
Application granted granted Critical
Publication of IT973721B publication Critical patent/IT973721B/it

Links

Classifications

    • 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
    • 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
    • H04N2007/1739—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal the upstream communication being transmitted via a separate link, e.g. telephone line

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Telephonic Communication Services (AREA)
  • Radio Relay Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
IT54267/72A 1971-11-25 1972-11-24 Perfezionamenti nei sistemi di filodiffusione o relativi as esso IT973721B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5482271A GB1412586A (en) 1971-11-25 1971-11-25 Wired broadcasting systems

Publications (1)

Publication Number Publication Date
IT973721B true IT973721B (it) 1974-06-10

Family

ID=10472182

Family Applications (1)

Application Number Title Priority Date Filing Date
IT54267/72A IT973721B (it) 1971-11-25 1972-11-24 Perfezionamenti nei sistemi di filodiffusione o relativi as esso

Country Status (14)

Country Link
JP (1) JPS4864802A (it)
AU (1) AU467268B2 (it)
BE (1) BE791941A (it)
CH (1) CH552316A (it)
DE (1) DE2257644C3 (it)
ES (1) ES408940A1 (it)
FR (1) FR2161122B1 (it)
GB (1) GB1412586A (it)
IL (1) IL40808A (it)
IT (1) IT973721B (it)
MT (1) MTP730B (it)
NL (1) NL7215797A (it)
SE (1) SE387027B (it)
ZA (1) ZA728024B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2917978C2 (de) * 1979-05-04 1983-12-22 Volker Joachim 4400 Münster Remme Kabelkommunikationssystem
EP0093205B1 (en) * 1982-04-29 1985-11-13 Deltakabel B.V. System for transmitting programme or data signals
EP0401873A3 (en) * 1982-05-14 1991-09-18 Communications Patents Limited A communications system
GB2164229B (en) * 1982-05-14 1986-08-20 Communications Patents Ltd Communications system
US4605958A (en) * 1983-04-14 1986-08-12 Control Data Corporation Method and apparatus for detecting the channel to which an electronic receiver system is tuned
US4789860A (en) * 1985-03-12 1988-12-06 U.S. Philips Corp. Interface between a receiver and a sub-system
US4896209A (en) * 1987-02-10 1990-01-23 Sony Corporation Passenger vehicle polling system having a central unit for polling passenger seat terminal units

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1409479A (fr) * 1963-07-24 1965-08-27 Skiatron Elect & Tele émetteurs-récepteurs asservis dits transponders retransmettant des signaux produits par la station centrale

Also Published As

Publication number Publication date
FR2161122A1 (it) 1973-07-06
ES408940A1 (es) 1975-10-16
JPS4864802A (it) 1973-09-07
DE2257644B2 (de) 1979-05-17
CH552316A (de) 1974-07-31
GB1412586A (en) 1975-11-05
DE2257644C3 (de) 1980-01-17
NL7215797A (it) 1973-05-29
FR2161122B1 (it) 1978-03-03
DE2257644A1 (de) 1973-05-30
BE791941A (fr) 1973-03-16
IL40808A0 (en) 1973-01-30
IL40808A (en) 1976-08-31
AU467268B2 (en) 1975-11-27
MTP730B (en) 1973-08-10
ZA728024B (en) 1973-07-25
SE387027B (sv) 1976-08-23
AU4920072A (en) 1974-05-23

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