GB1551740A - Wired broadcasting systems - Google Patents

Wired broadcasting systems

Info

Publication number
GB1551740A
GB1551740A GB29548/75A GB2954875A GB1551740A GB 1551740 A GB1551740 A GB 1551740A GB 29548/75 A GB29548/75 A GB 29548/75A GB 2954875 A GB2954875 A GB 2954875A GB 1551740 A GB1551740 A GB 1551740A
Authority
GB
United Kingdom
Prior art keywords
carrier signal
signal
modulator
generating
transmitting device
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
GB29548/75A
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
Priority to GB29548/75A priority Critical patent/GB1551740A/en
Priority to ZA764035A priority patent/ZA764035B/en
Priority to DE19762630686 priority patent/DE2630686A1/en
Priority to CH881976A priority patent/CH607664A5/en
Priority to NL7607745A priority patent/NL7607745A/en
Priority to IT50422/76A priority patent/IT1066597B/en
Priority to AU15911/76A priority patent/AU499803B2/en
Publication of GB1551740A publication Critical patent/GB1551740A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

A distribution network is used for distributing programme signals from a central station to a plurality of receivers (6, 7). The central station exhibits a transmitting device (5) which is used for feeding the distribution network. The transmitting device (5) exhibits a character generator (10, 11, 12) for generating a character signal, a modulator (19, 20, 21) for modulating a radio-frequency carrier signal and an oscillator (16) for generating a clock signal for the character generator (10, 11, 12) and the carrier signal supplied to the modulator (19, 20, 21). The frequency of the clock signal and of the carrier signal have an integral-numbered ratio to one another so that the visible beat effect caused between the carrier signal and the picture signals is reduced. <IMAGE>
GB29548/75A 1975-07-15 1975-07-15 Wired broadcasting systems Expired GB1551740A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB29548/75A GB1551740A (en) 1975-07-15 1975-07-15 Wired broadcasting systems
ZA764035A ZA764035B (en) 1975-07-15 1976-07-07 Improvements in or relating to wired broadcasting systems
DE19762630686 DE2630686A1 (en) 1975-07-15 1976-07-08 SYSTEM FOR WIRED IMAGE TRANSFER
CH881976A CH607664A5 (en) 1975-07-15 1976-07-09 Wire television system
NL7607745A NL7607745A (en) 1975-07-15 1976-07-13 WIRE FREQUENCY SYSTEM.
IT50422/76A IT1066597B (en) 1975-07-15 1976-07-14 METHOD AND APPARATUS FOR REMOTE WIRE TRANSMISSIONS
AU15911/76A AU499803B2 (en) 1975-07-15 1976-07-15 Wired broadcasting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29548/75A GB1551740A (en) 1975-07-15 1975-07-15 Wired broadcasting systems

Publications (1)

Publication Number Publication Date
GB1551740A true GB1551740A (en) 1979-09-12

Family

ID=10293274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29548/75A Expired GB1551740A (en) 1975-07-15 1975-07-15 Wired broadcasting systems

Country Status (7)

Country Link
AU (1) AU499803B2 (en)
CH (1) CH607664A5 (en)
DE (1) DE2630686A1 (en)
GB (1) GB1551740A (en)
IT (1) IT1066597B (en)
NL (1) NL7607745A (en)
ZA (1) ZA764035B (en)

Also Published As

Publication number Publication date
DE2630686A1 (en) 1977-02-03
NL7607745A (en) 1977-01-18
CH607664A5 (en) 1978-09-29
AU499803B2 (en) 1979-05-03
IT1066597B (en) 1985-03-12
ZA764035B (en) 1977-05-25
AU1591176A (en) 1978-01-19

Similar Documents

Publication Publication Date Title
GB1553935A (en) Phased locked loop exciter generator for high frequency transmitter
GB1551740A (en) Wired broadcasting systems
JPS5293221A (en) Radio frequency signal distributor for catv system
GB1252942A (en)
US2889399A (en) Single frame facsimile system
JPS5258417A (en) Signal transmission system for color television
GB1043231A (en) Improved wired broadcasting systems and apparatus therefor
GB595138A (en) Improvements in television systems
GB1056078A (en) Improved wired broadcasting systems and apparatus therefor
DE3062005D1 (en) Synchronisation device for a character generating circuit and a vertical deflection circuit, and television receiver comprising such a device
DE3162161D1 (en) Television receiver with a sound channel operating with the carriers-difference system
GB1043232A (en) Improved wired broadcasting systems and apparatus therefor
GB1445733A (en) Underwater transmission system
US3205311A (en) Multiplexing and communication system with highly damped gated signal generator
JPS5216130A (en) Color tv receiver circuit
GB1166632A (en) Improved Wired Broadcasting Systems and Apparatus Therefor
GB746031A (en) Method of and apparatus for the distribution of television signals
JPS53108222A (en) Modulator circuit
GB994233A (en) Improvements in or relating to television distribution systems
GB1087300A (en) Improved wired broadcasting systems and apparatus therefor
GB723122A (en) Improvements relating to television apparatus especially television relay apparatus
GB1113233A (en) Wired broadcasting systems and apparatus
JPS5213724A (en) Still picture broadcast receiver
FR2445677A1 (en) Modifier for SECAM colour TV signals - inserts line sequence identification pulses into vertical blanking intervals of colour signal
IT1036338B (en) Radio transmission system for colour TV signals - has two carriers of frequencies equal to odd multiple of signal spacing frequency

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee