A method for displaying an image in a display device initially includes storing a plurality masks in a memory. A mask of the plurality of masks is selected randomly from the plurality of masks, when control information is received for a source image and used to change the orientation of the source image....http://www.google.ca/patents/US8134577?utm_source=gb-gplus-sharePatent US8134577 - System and method for changing orientation of an image in a display device
