GB1359233A - Common antenna television system - Google Patents

Common antenna television system

Info

Publication number
GB1359233A
GB1359233A GB5434371A GB5434371A GB1359233A GB 1359233 A GB1359233 A GB 1359233A GB 5434371 A GB5434371 A GB 5434371A GB 5434371 A GB5434371 A GB 5434371A GB 1359233 A GB1359233 A GB 1359233A
Authority
GB
United Kingdom
Prior art keywords
frequency
band iii
channel
common antenna
nov
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
GB5434371A
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke GmbH
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 DE19702057726 external-priority patent/DE2057726C3/en
Application filed by Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Publication of GB1359233A publication Critical patent/GB1359233A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/77—Wired systems using carrier waves
    • H04H20/78—CATV [Community Antenna Television] systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Superheterodyne Receivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

1359233 Wired television BLAUPUNKTWERKE GmbH 23 Nov 1971 [24 Nov 1970] 54343/71 Heading H4R In a common antenna receiving system in which a plurality of channels in band III and a channel lying outside band III are made available to a plurality of receivers via a common output line, a frequency-converter is provided for transposing the channel lying outside band III into band III, the local oscillator frequency of the frequency-converter being such that when a receiver in the system is timed to a channel in the lower frequency range of band III the frequency of the local oscillator of said receiver is located between the frequency of the video carrier of said transposed channel and the frequency of the audio carrier of the next channel below it in band III. By this means additional channels may be utilized in band III without mutual interference.
GB5434371A 1970-11-24 1971-11-23 Common antenna television system Expired GB1359233A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702057726 DE2057726C3 (en) 1970-11-24 Frequency converter for radiation-tight community antenna systems

Publications (1)

Publication Number Publication Date
GB1359233A true GB1359233A (en) 1974-07-10

Family

ID=5788970

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5434371A Expired GB1359233A (en) 1970-11-24 1971-11-23 Common antenna television system

Country Status (6)

Country Link
AT (1) AT312072B (en)
BE (1) BE775755A (en)
FR (1) FR2115387B1 (en)
GB (1) GB1359233A (en)
IT (1) IT945103B (en)
NL (1) NL7116157A (en)

Also Published As

Publication number Publication date
FR2115387A1 (en) 1972-07-07
FR2115387B1 (en) 1977-08-05
DE2057726A1 (en) 1972-06-08
DE2057726B2 (en) 1974-02-07
NL7116157A (en) 1972-05-26
IT945103B (en) 1973-05-10
AT312072B (en) 1973-12-10
BE775755A (en) 1972-03-16

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Legal Events

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