Patent ID: 8825913
Filing Date: 2014-09-02
Classification: G09G

Abstract:
1. A universal quick port-switching detecting apparatus, comprising: a plurality of resistors, for receiving a plurality of ground signals from a plurality of video receiving ports of a video display device, respectively, wherein the ground signals are supplied through the plurality of video receiving ports, said receiving ports employing transition minimized differential signaling (TMDS) signals; a voltage-dividing detecting circuit, coupled to the resistors, for generating a single predictable divided voltage; and an analog-to-digital converter (ADC), coupled to the voltage-dividing detecting circuit, for generating a single digital output according to the single predictable divided voltage; wherein the universal quick port-switching detecting apparatus simultaneously identifies, according to the single digital output, which one or ones of the video receiving ports are active while respective engines associated with the video receiving ports are inactive, and wherein the respective engines are disposed in the video display device.