Interface module for superimposing alphanumeric characters upon RGB video signals

摘要: An interface module for superimposing alphanumeric characters upon externalGB video signals received by a SCART connector of television set is disclosed. The includes central processing unit (CPU) controlling the command input from an keyboard, remote control, touch screen functions, and message exchange with center through D channel ISDN network. CPU controls display processor which outputs switching signal to R, G, B encoder encodes composite color in standard format such as PAL, SECAM or NTSC. done between external encoder.