Abstract: A method controls display of an image by dividing a source image into a plurality of M×N blocks of pixels, selecting a first one of the blocks, and transferring the pixels in the first block from a source memory to a display memory, the pixels in the first block transferred based on orientation change information. The selecting and transferring steps are then repeated to transfer pixels in remaining ones of the blocks to the display memory. Each block corresponds to only a portion of the source image, where any given portion represents less than a full line of pixels in the source image.

Abstract: A method for controlling display of an image includes generating a list of non-sequential random numbers, each number corresponding to a respective one of a plurality of lines in a source image. The lines in the source image are then transferred in non-sequential order from a first memory to a second memory based on the random numbers in the list and orientation change information. The resulting image in the second memory is then displayed in the desired orientation.

Abstract: 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. Each mask controls the transfer of image lines in a different non-sequential order based on the control information.

Abstract: A method controls display of an image by dividing a source image into a plurality of M×N blocks of pixels, selecting a first one of the blocks, and transferring the pixels in the first block from a source memory to a display memory, the pixels in the first block transferred based on orientation change information. The selecting and transferring steps are then repeated to transfer pixels in remaining ones of the blocks to the display memory. Each block corresponds to only a portion of the source image, where any given portion represents less than a full line of pixels in the source image.

Abstract: A method for controlling display of an image includes generating a list of non-sequential random numbers, each number corresponding to a respective one of a plurality of lines in a source image. The lines in the source image are then transferred in non-sequential order from a first memory to a second memory based on the random numbers in the list and orientation change information. The resulting image in the second memory is then displayed in the desired orientation.

Abstract: 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. Each mask controls the transfer of image lines in a different non-sequential order based on the control information.