Device and method for checking the validity of image data in a display device

A technology of image data and display equipment, applied in the direction of electrical digital data processing, static indicators, generation of response errors, etc., can solve non-safety-critical problems and achieve the effect of improving error tolerance

Active Publication Date: 2018-08-31
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] However, errors can also occur in the transmission and display of the image data of the warning message, which do not cause or only cause barely visible changes in the safety-relevant parts of the image data and are therefore classified as non-safety-critical.

Method used

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  • Device and method for checking the validity of image data in a display device
  • Device and method for checking the validity of image data in a display device

Examples

Experimental program
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Embodiment Construction

[0025] figure 1 An embodiment of a method 500 according to the invention is shown in the form of a flowchart. In a first step 501, image data generated in a graphics processor is received by a data monitoring module of a display device. In this case, the same image data can be received at periodic time intervals as image data packets, which are also referred to as image frames. The image data include, for example, information for displaying a warning symbol in a display of the display device. In this case, the image data are assigned to pixels of a picture point of the display, wherein the pixels comprise sub-pixels divided according to the primary colors red, green and blue. For example, each pixel includes sub-pixels for each primary color for additive color mixing. The image data thus contain information on the intensity with which the assigned sub-pixels in the corresponding primary color are to emit light, wherein this intensity is typically coded as a value in the for...

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PUM

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Abstract

The invention relates to a method (500) for checking the validity of image data. The image data is assigned pixels of image points of a display device (100), and each of at least one image datum of each pixel of a selection (502) of the pixels is used for an imaging process (504) of a test value. The imaged test value is compared with a stored test value (505), and the validity of the image data is determined only when the ascertained test value and the stored test value match. At least one image datum of at least one of the pixels of the selection is not taken into consideration (503) for theimaging process (504) of the test value.

Description

Background technique [0001] In order to meet the safety requirements according to ISO standard 26262, display devices in motor vehicles usually contain one or more monitoring modules, which perform calculations and perform checks on warning reports shown in the display of the display device value comparison. In the event of the occurrence of a safety-critical error in the display of the warning report, which was determined by comparison of the check value, the display is deactivated. DE 10 2007 048 608 A1 describes a method for checking the validity of a display signal, for example for checking the validity of image data of a warning message. [0002] However, errors can also occur in the transmission and display of the image data of the warning message, which do not cause or only cause barely visible changes in the safety-relevant parts of the image data and are therefore classified as non-safety-critical. In this case, a switch-off of the display of the display device is u...

Claims

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Application Information

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IPC IPC(8): G09G3/00G09G5/00G06F11/08
CPCG09G3/006G09G5/003G09G2330/08G09G2330/12G09G2360/16G09G2370/10G09G2380/10G06F11/1004G06F11/08
Inventor I.卡特桑M.林德尔
Owner ROBERT BOSCH GMBH
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