Adjusting the brightness of a display

Patent metadata

Field	Value
Publication number	US-12347405-B2
Application number	US-202118266886-A
Country	US
Kind code	B2
Filing date	Dec 7, 2021
Priority date	Dec 17, 2020
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

A method for adjusting the brightness of a display in a vehicle, to a display system having display electronics that are configured to carry out such a method, and to a vehicle that has a corresponding display system is disclosed. The method comprises selecting a region of the display, the region being defined by a number of pixels that is less than the number of pixels of the display, and incorporating a brightness value into the selected region each pixel in the selected region being assigned the same brightness value and the brightness value being associated through a calculation rule with each pixel of the selected region.

First claim

The invention claimed is:

1. A method for adjusting a brightness of a display in a vehicle, the method comprising:
selecting a first region of the display, the first region being defined by a number of pixels less than the number of pixels of the display;
selecting a second region of the display, the second region being defined by a number of pixels less than the number of pixels of the display;
selecting a third region of the display, the third region being defined by a number of pixels less than the number of pixels of the display, wherein each of the first region, the second region, and the third region are spaced apart from one another such that there is an unselected region between the first region, the second region, and the third region;
incorporating a first brightness value into the selected first region, a second brightness value into the selected second region, and a third brightness value into the selected third region, wherein each pixel in the selected first region is assigned the first brightness value, wherein each pixel in the selected second region is assigned the second brightness value, wherein each pixel in the selected third region is assigned the third brightness value, wherein each brightness value of the selected first region, second region and third region is associated with a nonlinear quadratic calculation rule, and wherein the brightness value of each of the three selected regions differs; and
multiplying the brightness value by an additional factor, wherein the additional factor is only assigned to a number of pixels of the selected second region that is less than the number of pixels of the selected second region, and wherein the additional factor is assigned exclusively to pixels that form the edge of the second region to separate the second region from the unselected region of the display.

2. The method as claimed in claim 1 , wherein the method further comprises adjusting brightness of the selected second region by varying the brightness value.

3. A display system in a vehicle comprising:
a display device comprising:
a display; and
display electronics, wherein the display electronics are configured to select a first region of the display, the first region being defined by a number of pixels less than the number of pixels of the display, wherein the display electronics are configured to select a second region of the display, the second region being defined by a number of pixels less than the number of pixels of the display, wherein the display electronics are configured to select a third region of the display, the third region being defined by a number of pixels less than the number of pixels of the display, wherein each of the first region, the second region, and the third region are spaced apart from one another such that there is an unselected region between the first region, the second region, and the third region, and incorporate a first brightness value into the selected first region, a second brightness value into the selected second region, and a third brightness value into the selected third region, wherein each pixel in the selected first region is assigned the first brightness value, wherein each pixel in the selected second region is assigned the second brightness value, wherein each pixel in the selected third region is assigned the third brightness value, wherein each brightness value of the selected first region, second region and third region is associated with a nonlinear quadratic calculation rule, wherein the brightness value of each of the three selected region differs, wherein multiplying the brightness value by an additional factor is performed, wherein the additional factor is only assigned to a number of pixels of the selected second region that is less than the number of pixels of the selected second region, and wherein the additional factor is assigned exclusively to pixels that form the edge of the second region to separate the second region from the unselected region of the display; and

a graphics unit, wherein the graphics unit is operationally connected to the display electronics via a first data channel, wherein the first data channel is a low voltage differential signaling line, in order to provide image or video information items to the display device.

4. The display system as claimed in claim 3 , wherein the first region and third region selected are stored in a fixed fashion in the display electronics.

5. The display as claimed in claim 4 , wherein the image or video information items contain an information item that causes the display electronics to select the region and to incorporate the brightness value into the selected region.

6. The display as claimed in claim 4 , wherein the image or video information items contain an information item that causes the display electronics to select the region or to incorporate the brightness value into the selected region.

7. The display system as claimed in claim 4 , wherein the display system comprises a second data channel, the second data channel operationally connecting the graphics unit to the display electronics and control information items being transmitted from the graphics unit to the display electronics via the second data channel, the control information items causing the display electronics to select the region and to incorporate the brightness value into the selected region.

8. The display system as claimed in claim 4 , wherein the display system comprises a second data channel, the second data channel operationally connecting the graphics unit to the display electronics and control information items being transmitted from the graphics unit to the display electronics via the second data channel, the control information items causing the display electronics to select the region or to incorporate the brightness value into the selected region.

9. The display system as claimed in claim 3 , wherein the image or video information items contain an information item that causes the display electronics to select the region and to incorporate the brightness value into the selected region.

10. The display system as claimed in claim 3 , wherein the image or video information items contain an information item that causes the display electronics to select the region or to incorporate the brightness value into the selected region.

11. The display system as claimed in claim 3 , wherein the display system comprises a second data channel, wherein the second data channel operationally connects the graphics unit to the display electronics and control information items are transmitted from the graphics unit to the display electronics via the second data channel, the control information items causing the display electronics to select the region and to incorporate the brightness value into the selected region.

12. The display system as claimed in claim 3 , wherein the display system comprises a second data channel, wherein the second data channel operationally connects the graphics unit to the display electronics and control information items are transmitted from the graphics unit to the display electronics via the second data channel, the control information items causing the display electronics to select the region or to incorporate the brightness value into the selected region.

Assignees

• Continental Automotive Tech Gmbh

Inventors

• Kabatek Ulrich
• Hohmann Kai

Classifications

• G09G2380/10

  Automotive applications · CPC title

• G09G2370/045

  using multiple communication channels, e.g. parallel and serial · CPC title

• G09G2360/16

  Calculation or use of calculated indices related to luminance levels in display data · CPC title

• G09G2320/0626

  for control of overall brightness · CPC title

• G09G2320/0686

  with two or more screen areas displaying information with different brightness or colours · CPC title