Abstract: The invention is directed, in one embodiment, to a method for generating memory addresses for accessing an image in which each pixel in a group of pixels has a luma component, but shares chroma components with other pixels of the group. A preferred method includes providing a memory, having a plurality of first portions and a plurality of second portions. First memory addresses may be generated, each of which corresponds to one of the first portions. Each first address defines a storage location for the luma components of one of the pixel groups. Second memory addresses may be generated, each of which corresponds to one of the second portions. Each second address defines a storage location for the chroma components of at least one of the pixel groups.

Abstract: A method for sampling audio data is provided. In this method, the audio data is received and sampled at a first sampling rate using a first interpolation calculation. Thereafter, the audio data sampled at the first sampling rate is again sampled at a second sampling rate using a second interpolation calculation. After sampling, the second audio data sampled at the second sampling rate is outputted. Circuitries and systems for sampling audio data also are described.

Abstract: The invention is generally directed to a method and apparatus for efficient rotation of an image. The image is preferably defined by an image matrix in which each datum of the image corresponds to a particular image row and a particular image column of the image matrix. A preferred method includes mapping each of the datum into a memory matrix organized into a plurality of memory rows and a plurality of memory columns. The mapping preferably includes mapping into one of the memory rows: (a) at least two data, both of which correspond to one of the image rows, and (b) at least two image vector portions, a first one of the image vector portions including at least two data each corresponding to one of the image columns, and a second one of the image vector portions including at least two other data each corresponding to another of the image columns.