GB2167276B - Communication system - Google Patents

Communication system

Info

Publication number
GB2167276B
GB2167276B GB8527573A GB8527573A GB2167276B GB 2167276 B GB2167276 B GB 2167276B GB 8527573 A GB8527573 A GB 8527573A GB 8527573 A GB8527573 A GB 8527573A GB 2167276 B GB2167276 B GB 2167276B
Authority
GB
United Kingdom
Prior art keywords
communication system
communication
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
GB8527573A
Other versions
GB2167276A (en
GB8527573D0 (en
Inventor
Dr Albert Ernest Cutler
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 GB8527573D0 publication Critical patent/GB8527573D0/en
Publication of GB2167276A publication Critical patent/GB2167276A/en
Application granted granted Critical
Publication of GB2167276B publication Critical patent/GB2167276B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • 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
    • 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
    • H04N7/17363—Control of the passage of the selected programme at or near 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
GB8527573A 1984-11-13 1985-11-08 Communication system Expired GB2167276B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8428647A GB8428647D0 (en) 1984-11-13 1984-11-13 Communication system

Publications (3)

Publication Number Publication Date
GB8527573D0 GB8527573D0 (en) 1985-12-11
GB2167276A GB2167276A (en) 1986-05-21
GB2167276B true GB2167276B (en) 1988-11-02

Family

ID=10569658

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8428647A Pending GB8428647D0 (en) 1984-11-13 1984-11-13 Communication system
GB8527573A Expired GB2167276B (en) 1984-11-13 1985-11-08 Communication system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8428647A Pending GB8428647D0 (en) 1984-11-13 1984-11-13 Communication system

Country Status (4)

Country Link
JP (1) JPS61166236A (en)
DE (1) DE3539378A1 (en)
FR (1) FR2573265B1 (en)
GB (2) GB8428647D0 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1314457A (en) * 1970-11-12 1973-04-26 Communications Patents Ltd Wired broadcasting systems
NL7405405A (en) * 1974-04-22 1975-10-24 Philips Nv TELEVISION DISTRIBUTION SYSTEM.
DE2951495A1 (en) * 1979-12-20 1981-07-02 Siemens AG, 1000 Berlin und 8000 München BROADBAND TELECOMMUNICATION SYSTEM
NL8006976A (en) * 1980-12-22 1982-07-16 Delta Kabel Bv SWITCHING SYSTEM.
US4491983A (en) * 1981-05-14 1985-01-01 Times Fiber Communications, Inc. Information distribution system
GB2121656B (en) * 1982-05-14 1986-08-20 Communications Patents Ltd Communications system

Also Published As

Publication number Publication date
FR2573265B1 (en) 1989-12-15
GB2167276A (en) 1986-05-21
FR2573265A1 (en) 1986-05-16
JPS61166236A (en) 1986-07-26
GB8527573D0 (en) 1985-12-11
GB8428647D0 (en) 1984-12-19
DE3539378A1 (en) 1986-05-15

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Legal Events

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

Effective date: 19921108