DE102021128915A1 - Method for head-up displays for vehicles and head-up displays for displaying images that are as high-contrast as possible - Google Patents

Method for head-up displays for vehicles and head-up displays for displaying images that are as high-contrast as possible Download PDF

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Publication number
DE102021128915A1
DE102021128915A1 DE102021128915.7A DE102021128915A DE102021128915A1 DE 102021128915 A1 DE102021128915 A1 DE 102021128915A1 DE 102021128915 A DE102021128915 A DE 102021128915A DE 102021128915 A1 DE102021128915 A1 DE 102021128915A1
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Germany
Prior art keywords
head
displays
vehicles
backlighting
display
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Pending
Application number
DE102021128915.7A
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German (de)
Inventor
Sebastian Takeshi Lampen
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication date
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Priority to DE102021128915.7A priority Critical patent/DE102021128915A1/en
Publication of DE102021128915A1 publication Critical patent/DE102021128915A1/en
Pending 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
    • G09G3/34—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
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Arrangement of adaptations of instruments
    • B60K35/23—
    • B60K35/50—
    • B60K2360/334—
    • B60K2360/343—
    • B60K2360/349—
    • B60K2360/48—
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • 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
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • 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
    • G09G2380/00—Specific applications
    • G09G2380/10—Automotive applications

Abstract

Offenbart wird ein Verfahren für Head-up Displays für Fahrzeuge zur Anzeige von Bildern, umfassend eine Matrixhinterleuchtung, ein Display und Optikelemente, wobei das Verfahren umfasst: Auslesen der Pixel der Bilder bezüglich deren Helligkeit; Anpassen der Matrixhinterleuchtung derart, dass für jedes Bild möglichst wenig Pixel mit geringer Helligkeit hinterleuchtet werden.A method for head-up displays for vehicles for displaying images is disclosed, comprising matrix backlighting, a display and optical elements, the method comprising: reading out the pixels of the images with regard to their brightness; Adjust the matrix backlighting in such a way that as few pixels as possible are backlit with low brightness for each image.

Description

Die Erfindung betrifft Verfahren für Head-up Displays für Fahrzeuge und Head-up Displays zur Anzeige von möglichst kontrastreichen Bildern.The invention relates to methods for head-up displays for vehicles and head-up displays for displaying images that are as high-contrast as possible.

Heutzutage sind Head-up Displays in Fahrzeugen bekannt. Diese umfassen eine Lichtquelle zur Hinterleuchtung, ein Display und Optikelemente. Der Strahlengang des Head-up Displays umfasst dabei eine Reflektion an der Windschutzscheibe. Mithilfe des Head-up Displays können dem Fahrer Bilder angezeigt werden, die typischerweise über der Motorhaube zu schweben scheinen.Head-up displays in vehicles are known today. These include a light source for backlighting, a display and optical elements. The beam path of the head-up display includes a reflection on the windshield. The head-up display can be used to show the driver images that typically appear to be floating above the bonnet.

In den bekannten Head-up Displays kann insbesondere bei Nachteinsatz der Konstrast des dargestellten Bildes für den Fahrer als gering erscheinen. Dies liegt daran, dass die Hinterleuchung in der Fläche konstant ist und auch eigentlich dunkle Pixel des Displays hinterleuchtet, durch die dann Restlicht austritt.In the known head-up displays, the contrast of the displayed image can appear low to the driver, particularly when used at night. This is due to the fact that the backlighting is constant across the surface and actually backlights the display's dark pixels, through which residual light then escapes.

Dem Fachmann stellt sich somit die Aufgabe, den Kontrast von Head-up Displays zu erhöhen.The person skilled in the art is therefore faced with the task of increasing the contrast of head-up displays.

Die Aufgabe wird durch die unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen sind in den abhängigen Ansprüchen definiert.The object is solved by the independent claims. Advantageous developments are defined in the dependent claims.

Ein erster Aspekt betrifft ein Verfahren für Head-up Displays für Fahrzeuge zur Anzeige von Bildern, umfassend eine Matrixhinterleuchtung, ein Display und Optikelemente, wobei das Verfahren umfasst: Auslesen der Pixel der Bilder bezüglich deren Helligkeit bzw. ob der Pixel einen Inhalt anzeigt; Anpassen der Matrixhinterleuchtung derart, dass für jedes Bild möglichst wenig Pixel mit geringer Helligkeit hinterleuchtet werden. Das Auslesen der Pixel der Bilder kann Reihe für Reihe und Zeile für Zeile erfolgen. Eine Matrixhinterleuchtung ist eine Hinterleuchtung, die in Bereiche aufgeteilt ist (wobei die Bereiche auch jeweils nur einen Pixel des Displays abdecken können), deren Helligkeit getrennt voneinander gesteuert werden kann.A first aspect relates to a method for head-up displays for vehicles for displaying images, comprising matrix backlighting, a display and optical elements, the method comprising: reading out the pixels of the images with regard to their brightness or whether the pixel displays content; Adjust the matrix backlighting in such a way that as few pixels as possible are backlit with low brightness for each image. The pixels of the images can be read out row by row and line by line. A matrix backlight is a backlight that is divided into areas (whereby the areas can cover only one pixel of the display) whose brightness can be controlled separately from each other.

Hierin wird also vorgeschlagen, dass nur diejenigen Pixel oder eben abhängig von den Eigenschaften der Matrixhinterleuchtung nur diejenigen Pixel, die eine Mindesthelligkeit aufweisen, und benachbarte Pixel, hinterleuchtet werden. Dies kann von den Bereichen und der Matrixhinterleuchtung und deren Geometrie abhängen. Eine Mindesthelligkeit kann so verstanden werden, dass der Pixel einen Inhalt anzeigt.It is therefore proposed here that only those pixels or, depending on the properties of the matrix backlighting, only those pixels that have a minimum brightness and neighboring pixels are backlit. This can depend on the areas and the matrix backlighting and its geometry. A minimum brightness can be understood as the pixel displaying content.

Ein weiterer Aspekt der Erfindung betrifft Head-up Displays für Fahrzeuge zur Anzeige von Bildern, umfassend eine Matrixhinterleuchtung, ein Display und Optikelemente, wobei das Head-up Display dazu eingerichtet ist, das vorstehende Verfahren auszuführen.A further aspect of the invention relates to head-up displays for vehicles for displaying images, comprising matrix backlighting, a display and optical elements, the head-up display being set up to carry out the above method.

Figurenlistecharacter list

  • 1 zeigt ein Ablaufdiagramm gemäß einem Ausführungsbeispiel der Erfindung. 1 shows a flowchart according to an embodiment of the invention.

DETAILLIERTE BESCHREIBUNG DES AUSFÜHRUNGSBEISPIELSDETAILED DESCRIPTION OF THE EMBODIMENT

1 zeigt ein Ablaufdiagramm gemäß einem Ausführungsbeispiel der Erfindung. Das Verfahren ist für Head-up Displays für Fahrzeuge zur Anzeige von Bildern und umfasst eine Matrixhinterleuchtung, ein Display und Optikelemente. In einem ersten Schritt S1 werden die Pixel der Bilder bezüglich deren Helligkeit ausgelesen. In einem zweiten Schritt S2 wird die Matrixhinterleuchtung derart angepasst, dass für jedes Bild möglichst wenig Pixel mit geringer Helligkeit hinterleuchtet werden. 1 shows a flowchart according to an embodiment of the invention. The method is for head-up displays for vehicles to display images and includes matrix backlighting, a display and optical elements. In a first step S1, the pixels of the images are read out with regard to their brightness. In a second step S2, the matrix backlighting is adjusted in such a way that as few pixels as possible are backlit with low brightness for each image.

Claims (2)

Verfahren für Head-up Displays für Fahrzeuge zur Anzeige von Bildern, umfassend eine Matrixhinterleuchtung, ein Display und Optikelemente, wobei das Verfahren umfasst: Auslesen der Pixel der Bilder bezüglich deren Helligkeit; Anpassen der Matrixhinterleuchtung derart, dass für jedes Bild möglichst wenig Pixel mit geringer Helligkeit hinterleuchtet werden.Method for head-up displays for vehicles for displaying images, comprising matrix backlighting, a display and optical elements, the method comprising: Reading out the pixels of the images with regard to their brightness; Adjust the matrix backlighting in such a way that as few pixels as possible are backlit with low brightness for each image. Head-up Display für Fahrzeuge zur Anzeige von Bildern, umfassend eine Matrixhinterleuchtung, ein Display und Optikelemente, wobei das Head-up Display dazu eingerichtet ist, ein Verfahren nach Anspruch 1 auszuführen.Head-up display for vehicles for displaying images, comprising matrix backlighting, a display and optical elements, the head-up display being set up according to a method claim 1 to execute.
DE102021128915.7A 2021-11-05 2021-11-05 Method for head-up displays for vehicles and head-up displays for displaying images that are as high-contrast as possible Pending DE102021128915A1 (en)

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DE102021128915.7A DE102021128915A1 (en) 2021-11-05 2021-11-05 Method for head-up displays for vehicles and head-up displays for displaying images that are as high-contrast as possible

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DE102021128915.7A DE102021128915A1 (en) 2021-11-05 2021-11-05 Method for head-up displays for vehicles and head-up displays for displaying images that are as high-contrast as possible

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69012420T2 (en) 1989-05-18 1995-02-16 Hughes Aircraft Co Self-supporting "head-up" display board with high daylight and high night contrast.
DE102014214767A1 (en) 2014-07-28 2016-02-11 Continental Automotive Gmbh Display device for a motor vehicle, in particular head-up display
DE102018114866A1 (en) 2018-06-20 2019-12-24 Valeo Schalter Und Sensoren Gmbh Head-up display device for a motor vehicle, motor vehicle and method for operating a head-up display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69012420T2 (en) 1989-05-18 1995-02-16 Hughes Aircraft Co Self-supporting "head-up" display board with high daylight and high night contrast.
DE102014214767A1 (en) 2014-07-28 2016-02-11 Continental Automotive Gmbh Display device for a motor vehicle, in particular head-up display
DE102018114866A1 (en) 2018-06-20 2019-12-24 Valeo Schalter Und Sensoren Gmbh Head-up display device for a motor vehicle, motor vehicle and method for operating a head-up display device

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