Patent ID: 6400680
Filing Date: 2002-06-04
Classification: G06F

Abstract:
A data-processing arrangement for transforming an input data block comprising frequency coefficients into an output data block comprising spatial coefficients, the data-processing arrangement comprising:a memory containing pre-stored data pertaining to spatial patterns associated to respective frequency coefficients; a controller for verifying if the input data block includes less than or equal to a predetermined number of frequency coefficients being non-zero and includes frequency coefficients each having a value within a predetermined range, if so, establishing for each frequency coefficient which is non-zero and having a value within the predetermined range, an individual block of spatial coefficients on the basis of the pre-stored data, if the input data block includes more than the predetermined number of frequency coefficients being non-zero or includes frequency coefficients each having a value not within the predetermined range, transforming the input data block by means of computation; an accumulator for accumulating individual blocks of spatial coefficients to obtain the output data block.