TEST DEVICE, DISPLAY DEVICE, AND METHOD FOR CHECKING A VALIDITY OF DISPLAY SIGNALS

摘要

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.