ES409180A1 - Un sistema de difusion por conductores. - Google Patents

Un sistema de difusion por conductores.

Info

Publication number
ES409180A1
ES409180A1 ES409180A ES409180A ES409180A1 ES 409180 A1 ES409180 A1 ES 409180A1 ES 409180 A ES409180 A ES 409180A ES 409180 A ES409180 A ES 409180A ES 409180 A1 ES409180 A1 ES 409180A1
Authority
ES
Spain
Prior art keywords
telephone communication
broadcasting systems
frequency
systems providing
providing telephone
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
ES409180A
Other languages
English (en)
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.)
Communications Patents Ltd
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
Publication of ES409180A1 publication Critical patent/ES409180A1/es
Expired legal-status Critical Current

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
    • H04N7/17345—Control of the passage of the selected programme

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
ES409180A 1971-12-03 1972-12-01 Un sistema de difusion por conductores. Expired ES409180A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5629971A GB1414127A (en) 1971-12-03 1971-12-03 Wired broadcasting systems

Publications (1)

Publication Number Publication Date
ES409180A1 true ES409180A1 (es) 1976-01-01

Family

ID=10476280

Family Applications (1)

Application Number Title Priority Date Filing Date
ES409180A Expired ES409180A1 (es) 1971-12-03 1972-12-01 Un sistema de difusion por conductores.

Country Status (15)

Country Link
US (1) US3886456A (es)
JP (1) JPS4865831A (es)
BE (1) BE792215A (es)
CA (1) CA965526A (es)
CH (1) CH549919A (es)
DE (2) DE2265451C2 (es)
ES (1) ES409180A1 (es)
FR (1) FR2162236B1 (es)
GB (1) GB1414127A (es)
IL (1) IL40843A (es)
IT (1) IT973762B (es)
MT (1) MTP731B (es)
NL (1) NL7216232A (es)
SE (1) SE383817B (es)
ZA (1) ZA728071B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386365A (en) * 1979-06-19 1983-05-31 Communications Patents Limited Combined wired broadcasting and viewphone system
CA1284211C (en) * 1985-04-29 1991-05-14 Terrence Henry Pocock Cable television system selectively distributing pre-recorder video and audio messages
GB9201996D0 (en) * 1992-01-30 1992-03-18 Millicom Satellite Tv Services Communication systems
US5539635A (en) * 1994-07-19 1996-07-23 Larson, Jr.; Ernest J. Radio station program identifier and distribution system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1536780A (fr) * Communications Patents Ltd Dispositifs et appareils de télédiffusion par fils
DE884050C (de) 1937-08-08 1953-07-23 Siemens Ag Traegerfrequenzdrahtfunk-Verteilungsanlage
GB954916A (en) * 1961-03-01 1964-04-08 Pye Ltd Signal distribution system
NL299742A (es) * 1962-10-25
US3277243A (en) * 1962-12-19 1966-10-04 Burroughs Corp Telephone adapter
DE1940497U (de) 1966-04-22 1966-06-08 Broads Mfg Company Ltd Mannlochabdeckung.
US3587053A (en) * 1968-06-10 1971-06-22 Bell Telephone Labor Inc Audio visual information processing and communication system
GB1272594A (en) * 1968-08-09 1972-05-03 Communications Patents Ltd Improvements in and relating to wired broadcasting systems
US3691295A (en) * 1970-03-31 1972-09-12 Ibm Two-way communication system for video and digital data

Also Published As

Publication number Publication date
DE2258416B2 (de) 1978-12-07
DE2258416C3 (de) 1979-08-09
IL40843A0 (en) 1973-01-30
DE2265451C2 (de) 1982-02-18
NL7216232A (es) 1973-06-05
MTP731B (en) 1973-08-10
AU4932372A (en) 1974-05-30
IT973762B (it) 1974-06-10
FR2162236A1 (es) 1973-07-13
CA965526A (en) 1975-04-01
DE2258416A1 (de) 1973-06-07
CH549919A (de) 1974-05-31
JPS4865831A (es) 1973-09-10
FR2162236B1 (es) 1977-08-26
IL40843A (en) 1975-10-15
US3886456A (en) 1975-05-27
SE383817B (sv) 1976-03-29
BE792215A (fr) 1973-03-30
GB1414127A (en) 1975-11-19
ZA728071B (en) 1973-09-26

Similar Documents

Publication Publication Date Title
ES417500A1 (es) Un sistema de television para abonados.
JPS5477013A (en) Transmission system for picture sound
GB1059342A (en) Improved wired broadcasting systems
ES380453A1 (es) Un sistema de difusion por conductores.
ES396946A1 (es) Un sistema de difusion por conductores.
ES409180A1 (es) Un sistema de difusion por conductores.
SE7317372L (es)
ES408940A1 (es) Un sistema de difusion por conductores.
CA962388A (en) System for disabling incoming telephone calls
JPS5646380A (en) Quick answering system for questionnaire
JPS5279706A (en) Subscriber line calling system in key telephone unit
GB1521692A (en) Wired broadcasting systems
ES476249A1 (es) Sistema de difusion por cable.
CA944090A (en) Telecommunication system with telephone channel and optional wide-band channel
JPS5671361A (en) Exchanging system for television conference telephone
JPS52125213A (en) Absence transfer system
CH540615A (de) Schaltungsanordnung für eine zentral gesteuerte Fernsprechanlage, insbesondere Fernsprechnebenstellenanlage, mit Gleichstromsignale bzw. tonfrequente und Video-Signale weiterführenden Anschlussleitungen zu Teilnehmerstationen
ES333904A3 (es) Un sistema de comunicaciones alambricas y un dispositivo de cable para el mismo.
JPS5422705A (en) Extension subscriber calling system
JPS5351904A (en) Subscriber circuit system both for telephone and data
JPS5287304A (en) Extension line calling circuit in push-phone
ES8603129A1 (es) Sistema de acceso multiple,via radio,para telefonia rural
AU465529B2 (en) Telephone subscribers' metering system
AU269597B2 (en) Telecommunication system inwhich subscriber stations can send voice-frequency signals toan. exchange which identify unwanted stations
JPS5399806A (en) Intra-office connection system