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GB2007471B - Video circuit with screen burn-in protection - Google Patents

Video circuit with screen burn-in protection

Info

Publication number
GB2007471B
GB2007471B GB7839892A GB7839892A GB2007471B GB 2007471 B GB2007471 B GB 2007471B GB 7839892 A GB7839892 A GB 7839892A GB 7839892 A GB7839892 A GB 7839892A GB 2007471 B GB2007471 B GB 2007471B
Authority
GB
United Kingdom
Prior art keywords
protection
video circuit
screen burn
burn
screen
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
GB7839892A
Other versions
GB2007471A (en
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 FR7730547A external-priority patent/FR2406361A1/en
Priority claimed from FR7828418A external-priority patent/FR2438398A1/en
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB2007471A publication Critical patent/GB2007471A/en
Application granted granted Critical
Publication of GB2007471B publication Critical patent/GB2007471B/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
    • H04N5/66—Transforming electric information into light information
    • H04N5/68—Circuit details for cathode-ray display tubes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/20—Prevention of damage to cathode-ray tubes in the event of failure of scanning
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G09G2330/022—Power management, e.g. power saving in absence of operation, e.g. no data being entered during a predetermined time
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/04—Display protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Television Receiver Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Details Of Television Scanning (AREA)
GB7839892A 1977-10-11 1978-10-10 Video circuit with screen burn-in protection Expired GB2007471B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7730547A FR2406361A1 (en) 1977-10-11 1977-10-11 Video circuit generating signals reproducing pictures on screen - has switch which suppresses luminance signal when video signal does not change
FR7828418A FR2438398A1 (en) 1978-10-04 1978-10-04 Video circuit generating signals reproducing pictures on screen - has switch which suppresses luminance signal when video signal does not change

Publications (2)

Publication Number Publication Date
GB2007471A GB2007471A (en) 1979-05-16
GB2007471B true GB2007471B (en) 1982-02-10

Family

ID=26220259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7839892A Expired GB2007471B (en) 1977-10-11 1978-10-10 Video circuit with screen burn-in protection

Country Status (6)

Country Link
JP (1) JPS5946471B2 (en)
CA (1) CA1114535A (en)
DE (1) DE2844112C2 (en)
GB (1) GB2007471B (en)
IE (1) IE47294B1 (en)
NL (1) NL7810170A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58127495A (en) * 1982-01-26 1983-07-29 Mitsubishi Electric Corp Television video chroma circuit
JPS58224381A (en) * 1982-06-24 1983-12-26 富士通フアナツク株式会社 Display control system
US4811083A (en) * 1983-06-15 1989-03-07 Tektronix, Inc. Apparatus for displaying the phase and amplitude of a chrominance signal
GB8605030D0 (en) * 1986-02-28 1986-04-09 Gec Avionics Cathode ray tube display arrangements
FR2669789B1 (en) * 1990-11-22 1993-03-05 Dutemple Janny TIMER FOR COMPUTER SCREEN.
DE9217968U1 (en) * 1992-01-31 1993-04-29 Siemens Nixdorf Informationssysteme AG, 4790 Paderborn CRT monitor
US5821924A (en) * 1992-09-04 1998-10-13 Elonex I.P. Holdings, Ltd. Computer peripherals low-power-consumption standby system
US5389952A (en) † 1992-12-02 1995-02-14 Cordata Inc. Low-power-consumption monitor standby system
GB2282307A (en) * 1993-09-24 1995-03-29 Ibm Disabling display unit when image is unchanged

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2333391B2 (en) * 1973-06-30 1975-06-05 Norddeutsche Mende Rundfunk Kg, 2800 Bremen Circuit arrangement for preventing burn-in spots on the screen of an electron beam tube
DE2723818C2 (en) * 1977-05-26 1984-10-25 Blaupunkt-Werke Gmbh, 3200 Hildesheim Circuit arrangement for suppressing the beam current of a picture tube

Also Published As

Publication number Publication date
IE47294B1 (en) 1984-02-08
GB2007471A (en) 1979-05-16
JPS5946471B2 (en) 1984-11-13
DE2844112A1 (en) 1979-04-19
JPS5488722A (en) 1979-07-14
IE782030L (en) 1979-04-11
NL7810170A (en) 1979-04-17
CA1114535A (en) 1981-12-15
DE2844112C2 (en) 1984-02-16

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Legal Events

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