Digital signal-processing circuit performing a cosine transform

Abstract

Abstract Integrated circuit intended for calculating a cosine transform of the form <IMAGE> where i and j are row and column indices of a matrix of N x N numerical values x(i,j), and i and v are row and column indices of a matrix of N x N coefficients C<i>(v). The circuit comprises two memories, each of N rows of N words, operating alternately and serving, the one as work memory for calculating the coefficients C<i>(v) and the other as buffer memory for downloading the results of the calculation and loading new values to be processed. In a first alternation a memory is addressed word by word, and in a second alternation column by column. <IMAGE>

Inventors

• 👤 Joel Cambonie
• 👤 Eugène Mackowiak
• 👤 Yves-Marie Le Pannerer

Bibliographic Details