EP1475769A3 - Verfahren und Vorrichtung zur Verbesserung der Grauwertauflösung einer pulsbreitengesteuerten Bildanzeigevorrichtung - Google Patents

Verfahren und Vorrichtung zur Verbesserung der Grauwertauflösung einer pulsbreitengesteuerten Bildanzeigevorrichtung Download PDF

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Publication number
EP1475769A3
EP1475769A3 EP04010512A EP04010512A EP1475769A3 EP 1475769 A3 EP1475769 A3 EP 1475769A3 EP 04010512 A EP04010512 A EP 04010512A EP 04010512 A EP04010512 A EP 04010512A EP 1475769 A3 EP1475769 A3 EP 1475769A3
Authority
EP
European Patent Office
Prior art keywords
image
improving
pulse width
display device
image display
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.)
Ceased
Application number
EP04010512A
Other languages
English (en)
French (fr)
Other versions
EP1475769A2 (de
Inventor
Markus c/o Grundig Multimedia B.V. Friebe
Andreas Fuhrmann
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.)
Grundig Multimedia BV
Original Assignee
Grundig Multimedia BV
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 Grundig Multimedia BV filed Critical Grundig Multimedia BV
Publication of EP1475769A2 publication Critical patent/EP1475769A2/de
Publication of EP1475769A3 publication Critical patent/EP1475769A3/de
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • G09G3/294—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for lighting or sustain discharge
    • G09G3/2944—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for lighting or sustain discharge by varying the frequency of sustain pulses or the number of sustain pulses proportionally in each subfield of the whole frame
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/066—Adjustment of display parameters for control of contrast
    • 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
    • G09G2330/045—Protection against panel overheating
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Verbesserung der Grauwertauflösung bei einer pulsbreitengesteuerten Bildanzeigevorrichtung Dabei wird das für eine Bilddarstellung zur Verfugung stehende Zeitintervall in aufeinanderfolgende gewichtete Teilzeitintervalle aufgeteilt, wobei die Teilzeitintervalle Aktivierungssequenzen beinhalten, die wiederum aus jeweils vorgegebenen Anzahlen von Sustain-Pulsen bestehen Wird durch Analyse eines darzustellenden Bildes erkannt, dass ein dunkles Bild ohne größere helle Bildanteile vorliegt, wird in Abhängigkeit von den ermittelten Bildhelligkeitsverhältnissen einerseits die Anzahl der Sustain-Pulse für alle Aktivierungssequenzen die innerhalb eines Zeitintervalls für die Darstellung des Bildes liegen, um einen den ermittelten Bildhelligkeitsverhältnissen zugeordneten Prozentsatz verändert und andererseits das Videosignal im Analogteil des Videosignalweges so beeinflusst, das die durch die Veränderung der Anzahl der Sustain-Pulse bedingte Veränderung der Bildhelligkeit zumindest teilweise kompensiert wird Dadurch wird eine Verbesserung der Grauwertauflösung beim Vorliegen dunkler Bilder erreicht.
EP04010512A 2003-05-07 2004-05-04 Verfahren und Vorrichtung zur Verbesserung der Grauwertauflösung einer pulsbreitengesteuerten Bildanzeigevorrichtung Ceased EP1475769A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003120300 DE10320300A1 (de) 2003-05-07 2003-05-07 Verfahren und Vorrichtung zur Verbesserung der Grauwertauflösung einer pulsbreitengesteuerten Bildanzeigevorrichtung
DE10320300 2003-05-07

Publications (2)

Publication Number Publication Date
EP1475769A2 EP1475769A2 (de) 2004-11-10
EP1475769A3 true EP1475769A3 (de) 2009-07-15

Family

ID=32981259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04010512A Ceased EP1475769A3 (de) 2003-05-07 2004-05-04 Verfahren und Vorrichtung zur Verbesserung der Grauwertauflösung einer pulsbreitengesteuerten Bildanzeigevorrichtung

Country Status (2)

Country Link
EP (1) EP1475769A3 (de)
DE (1) DE10320300A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116721627B (zh) * 2023-06-20 2024-04-23 铠强科技(平潭)有限公司 数据信号处理方法和数据信号处理装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0973331A1 (de) * 1998-07-17 2000-01-19 Deutsche Thomson-Brandt Gmbh Vorrichtung zum Steuern der Helligkeit
EP1014330A2 (de) * 1998-12-24 2000-06-28 Fujitsu Limited Steuerung des dynamischen Bereichs eines Anzeigegeräts
EP1071281A1 (de) * 1998-03-06 2001-01-24 Matsushita Electric Industrial Co., Ltd. Vorrichtung und verfahren zur automatischen luminanzregelung
US20010006377A1 (en) * 1997-12-10 2001-07-05 Matsushita Electric Industrial Co., Ltd. Display apparatus capable of adjusting subfield number according to brightness
US20020149504A1 (en) * 2001-04-13 2002-10-17 Jyh-Guo Hwang Analog to digital conversion device
EP1265213A2 (de) * 2001-06-08 2002-12-11 Pioneer Corporation Anzeigevorrichtung und Verfahren

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010006377A1 (en) * 1997-12-10 2001-07-05 Matsushita Electric Industrial Co., Ltd. Display apparatus capable of adjusting subfield number according to brightness
EP1071281A1 (de) * 1998-03-06 2001-01-24 Matsushita Electric Industrial Co., Ltd. Vorrichtung und verfahren zur automatischen luminanzregelung
EP0973331A1 (de) * 1998-07-17 2000-01-19 Deutsche Thomson-Brandt Gmbh Vorrichtung zum Steuern der Helligkeit
EP1014330A2 (de) * 1998-12-24 2000-06-28 Fujitsu Limited Steuerung des dynamischen Bereichs eines Anzeigegeräts
US20020149504A1 (en) * 2001-04-13 2002-10-17 Jyh-Guo Hwang Analog to digital conversion device
EP1265213A2 (de) * 2001-06-08 2002-12-11 Pioneer Corporation Anzeigevorrichtung und Verfahren

Also Published As

Publication number Publication date
EP1475769A2 (de) 2004-11-10
DE10320300A1 (de) 2004-12-02

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