Abstract: Connecting an AC coupled source device to a DC coupled receiver device by way of a connector compatible with the DC coupled device includes generating a signal by the AC coupled source device, transmitting the signal by the AC coupled source device, receiving the signal at a converter unit coupled between the AC coupled source device and the connector, converting the signal to a converted signal suitable for reception by the DC coupled receiver device by the converter unit, passing the converted signal over the connector to the DC coupled receiver unit, and receiving the converted signal by the DC coupled receiver unit.

Abstract: An apparatus and method for processing Hsync and Vsync signals in graphic controllers to avoid a false reading of pulses caused by glitches. The apparatus and method involve detecting when the synch signal crosses the threshold for the first time. When this occurs, the output of the detection circuit is held for the predetermined period of time, even if subsequent transitions across threshold occur during this period. After the predetermined period expires, the output is released and may assume the same state as the input sync signal at that time. In this manner, a misinterpretation of the resolution format caused by the reading of a “false” pulse caused by a glitch on a sync signal can be avoided.