A multi-dimensional transformer for a group of input coefficients representative of a signal or signals with a single transformer and two transpose buffers is described. A two-dimensional transform is performed by a multiplexer and a single one-dimensional transformer. In addition, the one-dimensional...http://www.google.se/patents/US5550765?utm_source=gb-gplus-sharePatent US5550765 - Method and apparatus for transforming a multi-dimensional matrix of coefficents representative of a signal
