A display controlling device includes a first line buffer, a second line buffer, a buffer controller, a mixer, a de-interlacing device, a de-interlacing controller, a scaling device, a scaling controller, and a window display controller. The window display controller controls the operations of the mixer,...http://www.google.com.au/patents/US7463307?utm_source=gb-gplus-sharePatent US7463307 - Display controlling device capable of displaying multi-windows and related method
