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IE782030L - Screen-burn protection - Google Patents

Screen-burn protection

Info

Publication number
IE782030L
IE782030L IE203078A IE203078A IE782030L IE 782030 L IE782030 L IE 782030L IE 203078 A IE203078 A IE 203078A IE 203078 A IE203078 A IE 203078A IE 782030 L IE782030 L IE 782030L
Authority
IE
Ireland
Prior art keywords
circuit
run
screen
completion
long
Prior art date
Application number
IE203078A
Other versions
IE47294B1 (en
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of IE782030L publication Critical patent/IE782030L/en
Publication of IE47294B1 publication Critical patent/IE47294B1/en

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)

Abstract

To prevent display screen burn if a picture having, for example, bright lines e.g. in a T.V. game, remains stationary for a long period of time, a video circuit is examined to detect for how long the information has not been changed. A timer 8, reset whenever a change in any of one or more luminance circuits 3 is detected by detector 5, progresses towards completion of its run. If the run reaches completion a signal 9 causes, via circuit 11, the display 11 brightness to be reduced, e.g. to zero, possibly by switching off the supply to part of or all the apparatus. A restart circuit may be provided. <IMAGE> [GB2007471A]
IE203078A 1977-10-11 1978-10-11 Video circuit with screen-burn-in protection IE47294B1 (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
IE782030L true IE782030L (en) 1979-04-11
IE47294B1 IE47294B1 (en) 1984-02-08

Family

ID=26220259

Family Applications (1)

Application Number Title Priority Date Filing Date
IE203078A IE47294B1 (en) 1977-10-11 1978-10-11 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
DE2844112A1 (en) 1979-04-19
GB2007471A (en) 1979-05-16
DE2844112C2 (en) 1984-02-16
CA1114535A (en) 1981-12-15
IE47294B1 (en) 1984-02-08
JPS5946471B2 (en) 1984-11-13
NL7810170A (en) 1979-04-17
GB2007471B (en) 1982-02-10
JPS5488722A (en) 1979-07-14

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