EP1580726A3 - Method and device for varying the vertical image refresh frequency - Google Patents

Method and device for varying the vertical image refresh frequency Download PDF

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Publication number
EP1580726A3
EP1580726A3 EP05100535A EP05100535A EP1580726A3 EP 1580726 A3 EP1580726 A3 EP 1580726A3 EP 05100535 A EP05100535 A EP 05100535A EP 05100535 A EP05100535 A EP 05100535A EP 1580726 A3 EP1580726 A3 EP 1580726A3
Authority
EP
European Patent Office
Prior art keywords
varying
pixels
frequency
vertical image
refresh frequency
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.)
Withdrawn
Application number
EP05100535A
Other languages
German (de)
French (fr)
Other versions
EP1580726A2 (en
Inventor
Udo Stang
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP1580726A2 publication Critical patent/EP1580726A2/en
Publication of EP1580726A3 publication Critical patent/EP1580726A3/en
Withdrawn legal-status Critical Current

Links

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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0435—Change or adaptation of the frame rate of the video stream
    • 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
    • G09G2360/02—Graphics controller able to handle multiple formats, e.g. input or output formats
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers

Abstract

Die Erfindung betrifft ein Verfahren und eine Anordnung zur Variation einer Bildwiederholfrequenz von aus Bildpunkten und Zeilen bestehenden und auf einem Grafikbildschirm ausgebbaren Videobildern. Das zur Ansteuerung der einzelnen Bildpunkte erforderliche Pixeltaktsignal weist erfindungsgemäß während der Ansteuerung der sichtbaren Bildpunkte eine erste Frequenz auf und wird während einer nichtsichtbaren Phase der Ansteuerung, also während eines Zeilen- und/oder Bildrücklaufs, auf eine zweite Frequenz umgeschaltet. Je nach Dauer der Umschaltung auf die zweite Frequenz kann die entstehende Bildwiederholfrequenz variiert werden.

Figure imgaf001
The invention relates to a method and an arrangement for varying a refresh rate of video images consisting of pixels and lines and which can be output on a graphics screen. According to the invention, the pixel clock signal required to drive the individual pixels has a first frequency during the control of the visible pixels and is switched to a second frequency during a non-visible phase of the activation, ie during a line and / or frame return. Depending on the duration of switching to the second frequency, the resulting refresh rate can be varied.
Figure imgaf001
EP05100535A 2004-03-24 2005-01-27 Method and device for varying the vertical image refresh frequency Withdrawn EP1580726A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004014436 2004-03-24
DE200410014436 DE102004014436A1 (en) 2004-03-24 2004-03-24 Method and arrangement for varying a refresh rate

Publications (2)

Publication Number Publication Date
EP1580726A2 EP1580726A2 (en) 2005-09-28
EP1580726A3 true EP1580726A3 (en) 2010-03-17

Family

ID=34854025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05100535A Withdrawn EP1580726A3 (en) 2004-03-24 2005-01-27 Method and device for varying the vertical image refresh frequency

Country Status (2)

Country Link
EP (1) EP1580726A3 (en)
DE (1) DE102004014436A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020132161A1 (en) * 2020-12-03 2022-06-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method and system for deducing a reduced refresh rate in high-resolution headlights

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5758135A (en) * 1996-09-24 1998-05-26 Seiko Epson Corporation System and method for fast clocking a digital display in a multiple concurrent display system
EP0847194A2 (en) * 1996-12-04 1998-06-10 Nec Corporation Periphal frame-portion display control in an image display device having a liquid crystal display panel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5758135A (en) * 1996-09-24 1998-05-26 Seiko Epson Corporation System and method for fast clocking a digital display in a multiple concurrent display system
EP0847194A2 (en) * 1996-12-04 1998-06-10 Nec Corporation Periphal frame-portion display control in an image display device having a liquid crystal display panel

Also Published As

Publication number Publication date
EP1580726A2 (en) 2005-09-28
DE102004014436A1 (en) 2005-10-20

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