Patent ID: 6343304
Filing Date: 2002-01-29
Classification: G06F

Abstract:
An apparatus with a selective fixed-coefficient filter for recursively computing N points discrete cosine transform (DCT), comprising:a data manipulation unit with original N inputs with index n, for n=0, 1, . . . , Nâˆ’1 to obtain 2N manipulated inputs yk[m] for m=0, 1, . . . , 2Nâˆ’1 for computing the kth DCT coefficients for k=0, 1, . . . , Nâˆ’1; and a second order filter for processing 2N manipulated inputs yk[m] of said data manipulation unit so as to perform said kth DCT coefficients through 2Nâˆ’1 recursive operations.