GB1529985A - Broadcasting systems - Google Patents

Broadcasting systems

Info

Publication number
GB1529985A
GB1529985A GB3259276A GB3259276A GB1529985A GB 1529985 A GB1529985 A GB 1529985A GB 3259276 A GB3259276 A GB 3259276A GB 3259276 A GB3259276 A GB 3259276A GB 1529985 A GB1529985 A GB 1529985A
Authority
GB
United Kingdom
Prior art keywords
frequency
carrier
different
carrier frequencies
transmitted
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
GB3259276A
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 GB3259276A priority Critical patent/GB1529985A/en
Priority to NL7708086A priority patent/NL7708086A/en
Publication of GB1529985A publication Critical patent/GB1529985A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
    • H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
    • H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
    • H04H20/48—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for FM stereophonic broadcast systems
    • 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
    • H04H20/79—CATV [Community Antenna Television] systems using downlink of the CATV systems, e.g. audio broadcast via CATV network

Abstract

1529985 Wired broadcasting COMMUNICATIONS PATENTS Ltd 9 June 1977 [5 Aug 1976] 32592/76 Heading H4R In a wired broadcasting system a plurality of stereophonic sound programme signals are transmitted on a single channel as frequency modulation of different frequency carriers each of which is an integral multiple of the stereophonic subcarrier frequency. As described the subcarrier frequency is 38 kHz and the carrier frequencies are selected such that the sum of any two carrier frequencies is different from any other carrier frequency, that no carrier frequency is twice any other carrier frequency, and that the frequency spacings between any two adjacent carrier frequencies is different from that of any other two. Tables to enable choice of carrier frequency are described. The arrangement allows a number of stereo sound programmes to be transmitted in a channel which would otherwise carry a TV programme.
GB3259276A 1976-08-05 1976-08-05 Broadcasting systems Expired GB1529985A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3259276A GB1529985A (en) 1976-08-05 1976-08-05 Broadcasting systems
NL7708086A NL7708086A (en) 1976-08-05 1977-07-20 BROADCASTING SYSTEM.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3259276A GB1529985A (en) 1976-08-05 1976-08-05 Broadcasting systems

Publications (1)

Publication Number Publication Date
GB1529985A true GB1529985A (en) 1978-10-25

Family

ID=10341034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3259276A Expired GB1529985A (en) 1976-08-05 1976-08-05 Broadcasting systems

Country Status (2)

Country Link
GB (1) GB1529985A (en)
NL (1) NL7708086A (en)

Also Published As

Publication number Publication date
NL7708086A (en) 1978-02-07

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee
PCPE Delete 'patent ceased' from journal

Free format text: FOR 1529985 READ 1528985

PCNP Patent ceased through non-payment of renewal fee