GB1393556A - Television fault annunciator - Google Patents

Television fault annunciator

Info

Publication number
GB1393556A
GB1393556A GB5784672A GB5784672A GB1393556A GB 1393556 A GB1393556 A GB 1393556A GB 5784672 A GB5784672 A GB 5784672A GB 5784672 A GB5784672 A GB 5784672A GB 1393556 A GB1393556 A GB 1393556A
Authority
GB
United Kingdom
Prior art keywords
message
transmitter
television
signal
monitor
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
GB5784672A
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.)
British Broadcasting Corp
Original Assignee
British Broadcasting Corp
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 British Broadcasting Corp filed Critical British Broadcasting Corp
Priority to GB5784672A priority Critical patent/GB1393556A/en
Publication of GB1393556A publication Critical patent/GB1393556A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

1393556 Television BRITISH BROADCASTING CORP 57846/72 [14 Dec 1972] Heading H4F Operation of a television transmitter 10 is monitored by a monitor 12, detection of a fault condition causing appropriate signals to be inserted in the transmitted signal to cause a message to appear on receivers receiving the transmitted signal; the message may, for example, be "transmitting on low power" or "colour not being transmitted". A timer, 17, may cause the inserted message to flash at intervals, e.g. a 10 second display every two minutes. Fault detection by monitor 12 causes a logic circuit 13 to provide appropriate inputs to a read only memory character generator 14 controlled by synchronizing pulses separated at 15 from the input signal. The message signal may be added in the video section of the transmitter or, after modulation on an RF carrier at 16, in the RF section of the transmitter.
GB5784672A 1972-12-14 1972-12-14 Television fault annunciator Expired GB1393556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5784672A GB1393556A (en) 1972-12-14 1972-12-14 Television fault annunciator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5784672A GB1393556A (en) 1972-12-14 1972-12-14 Television fault annunciator

Publications (1)

Publication Number Publication Date
GB1393556A true GB1393556A (en) 1975-05-07

Family

ID=10480160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5784672A Expired GB1393556A (en) 1972-12-14 1972-12-14 Television fault annunciator

Country Status (1)

Country Link
GB (1) GB1393556A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487148A1 (en) * 1980-07-18 1982-01-22 Visiodis AUTOMATIC TRANSMISSION SUBSTITUTION DEVICE FOR TELEVISION SIGNAL DISTRIBUTION STATION AT A CABLE NETWORK
WO2000016558A1 (en) * 1998-09-10 2000-03-23 Snell & Wilcox Limited Digital television service protection apparatus
EP1722482A1 (en) * 2004-02-13 2006-11-15 Sharp Kabushiki Kaisha Display apparatus, wireless transmitting/receiving system, display method, display control program, and recording medium
EP1722481A1 (en) * 2004-02-13 2006-11-15 Sharp Kabushiki Kaisha Display apparatus, wireless transmitting/receiving system, display method, display control program, and recording medium

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487148A1 (en) * 1980-07-18 1982-01-22 Visiodis AUTOMATIC TRANSMISSION SUBSTITUTION DEVICE FOR TELEVISION SIGNAL DISTRIBUTION STATION AT A CABLE NETWORK
WO2000016558A1 (en) * 1998-09-10 2000-03-23 Snell & Wilcox Limited Digital television service protection apparatus
EP1722482A1 (en) * 2004-02-13 2006-11-15 Sharp Kabushiki Kaisha Display apparatus, wireless transmitting/receiving system, display method, display control program, and recording medium
EP1722481A1 (en) * 2004-02-13 2006-11-15 Sharp Kabushiki Kaisha Display apparatus, wireless transmitting/receiving system, display method, display control program, and recording medium
EP1722482A4 (en) * 2004-02-13 2007-11-28 Sharp Kk Display apparatus, wireless transmitting/receiving system, display method, display control program, and recording medium
EP1722481A4 (en) * 2004-02-13 2007-12-12 Sharp Kk Display apparatus, wireless transmitting/receiving system, display method, display control program, and recording medium
US8040377B2 (en) 2004-02-13 2011-10-18 Sharp Kabushiki Kaisha Display apparatus, wireless transmitting and receiving system, display method, display control program, and recording medium
US8232930B2 (en) 2004-02-13 2012-07-31 Sharp Kabushiki Kaisha Display apparatus, wireless transmitting and receiving system, display method, display control program, and recording medium

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Legal Events

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