An image scaling system includes a window memory, a longitudinal scaler, a buffer and a latitudinal scaler. The window memory temporarily stores partial data of N image lines. The longitudinal scaler performs a longitudinal scaling operation on the partial data of the N image lines to thereby produce...http://www.google.de/patents/US20080049045?utm_source=gb-gplus-sharePatent US20080049045 - Image scaling system capable of saving memory