1

Jacques Guichard, Eric Cassimatis:
Circuit for the fast calculation of the direct or inverse cosine transform of a discrete signal.
Nutter McClennen & Fish,
June 20, 1989:
US04841464
(24 worldwide citation)

A circuit for the fast calculation of the discrete cosine transform (X.sub.i), 0.ltoreq.i.ltoreq.N-1, in which N=2.sup.n and n is an integer of a signal defined by a sequence (x.sub.i), 0.ltoreq.i.ltoreq.N-1 includes a first adder stage receiving the sequence (x.sub.i), 0.ltoreq.i.ltoreq.N-1, and su ...

2

Guichard Jacques, Cassimatis Eric:
Circuit de calcul rapide de la transformee consinus directe ou inverse dun signal discret, Circuit for the fast calculation of the direct or inverse cosine transform of a discrete signal.
Guichard Jacques, Cassimatis Eric,
GOUDREAU GAGE DUBUC,
April 4, 1989:
CA1252212

-33- ABSTRACT OF THE DISCLOSURE Circuit for the fast calculation of the discrete cosinetransform (Xi), 0?i?N-1, in which N=2 and n is aninteger of a signal defined by a sequence (xi),0?i?N-1. This circuit comprises a first adder stage receiving thesequence (xi), 0?i?N-1, and supplying two sequences ...