Test device, display device, and method for checking a validity of display signals
AssigneeRobert Bosch GmbH
InventorsIgor Katchan, Markus Lindner
Life of this patent
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Abstract
A test device for checking the validity of display signals pertaining to a predefined image includes a device for ascertaining image data from the display signals, device for determining a test value of the image data, and a comparator unit for comparing the ascertained test value with a stored test value pertaining to the image, a validity of the display signals being established in the case where the two test values coincide.
Claims18
A test device for checking the validity of display signals corresponding to a predefined image, comprising:
- at least one device configured to:
- evaluate a status of an enable signal;
- ascertain image data from the display signals based on the evaluated status of the enable signal;
- determine a test value from the ascertained image data;
- compare the determined test value with a stored test value corresponding to the image data;
- and
- determine that the display signals are valid conditional upon that the determined test value is determined by the comparison to match the stored test value.
A method for checking a validity of display signals generated from image data of a predefined image, comprising:
- evaluating, by a processing circuit, a status of an enable signal;
- ascertaining, by the processing circuit, image data from the display signals based on the evaluated status of the enable signal;
- determining, by the processing circuit, a test value from the ascertained image data;
- comparing, by the processing circuit, the determined test value with a stored test value corresponding to the image data;
- and
- determining, by the processing circuit, that the display signals are valid conditional upon that the determined test value is determined by the comparison to match the stored test value.
A method for checking a validity of display signals generated from image data of a predefined image, comprising:
- ascertaining, by the processing circuit, image data from the display signals;
- generating, by the processing circuit, a test value corresponding to the ascertained image data, wherein the generating includes at least one of:
- selecting bit values from display signals in accordance with a predefined clock cycle;
- and
- a polynomial division;
- comparing, by the processing circuit, the determined test value with a stored test value corresponding to the image data;
- and
- determining, by the processing circuit, that the display signals are valid conditional upon that the determined test value is determined by the comparison to match the stored test value.
A method for checking a validity of display signals generated from image data of a predefined image, comprising:
- ascertaining, by the processing circuit, image data from the display signals;
- determining, by the processing circuit, a test value from the ascertained image data;
- comparing, by the processing circuit, the determined test value with a stored test value that is determined from ascertained image data of the predefined image;
- and
- determining, by the processing circuit, that the display signals are valid conditional upon that the determined test value is determined by the comparison to match the stored test value.
Dependencies are inferred from the claim text.