MODE CHANGING CIRCUIT FROM 12 INCH MONITOR TO 15 INCH MONITOR

摘要

This system provides a switching circuit which can display a 12" normal display mode or a 15" full frame display mode selectively. The circuit comprises: a buffer means (1) for receiving a mode signal containing a horizontal frequency and number of lines; a multi vibrator means (2) for generating a square wave; a converter (3) for converting a vibrator output to DC ; a decoder means (5) for decoding a mode signal; and a driving means (6) for selecting a 12" normal display mode of 15" full frame display mode according to the decoder output.