Patent ID: 6577303
Filing Date: 2003-06-10
Classification: G09G,H04N

Abstract:
An apparatus for determining a type of DVI (Digital Visual Interface) connector connected to a digital video display device, said apparatus comprising:a first resistor connected between a voltage source and a node; a second resistor connected between said node and a ground terminal; a DVI receptacle connected to said DVI connector, said DVI receptacle having a plurality of digital signal sockets connected to receive digital signals output from a host and a plurality of analog signal sockets connected to receive analog signals output from said host, said node being connected to a predetermined one of said analog signal sockets; and a controller connected to said node, said controller determining said DVI connector to be a DVI-D (digital only) type connector when a low voltage is detected at said node, and determining said DVI connector to be a DVI-I (digital and analog) type connector when a high voltage is detected at said node.