Patent ID: 7463307

Claim:
A display controlling device capable of displaying multi-windows, coupled to a memory storing a plurality of first video fields and a plurality of second video fields, the display controlling device comprising: a first line buffer coupled to the memory for receiving a plurality of first scan line data associated with the first video fields; a second line buffer coupled to the memory for receiving a plurality of second scan line data associated with the second video fields; a mixer coupled to the first line buffer and the second line buffer for selectively outputting data stored in the first line buffer and the second line buffer; a de-interlacing device coupled to the mixer for selectively de-interlacing data outputted from the mixer according to a first de-interlacing parameter and a second de-interlacing parameter selectively; and a scaling device coupled to the de-interlacing device for selectively scaling data outputted from the de-interlacing device according to a first scaling parameter and a second scaling parameter selectively, wherein the de-interlacing device and the scaling device selectively operate according to a first clock and a second clock, so that the scaling device generates a multi-windows output according to a predetermined output pixel rate.