The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 1994
Filed:
Mar. 06, 1992
Masahiro Iwama, Kawasaki, JP;
Osamu Kawai, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A circuit for a matrix calculation of the discrete cosine transformation includes a read only memory, multipliers, summing devices, registers, selectors and a control unit. The multiplication and the summing calculations, with regard to one input data, are successively carried out by using a plurality of transformation coefficients of discrete cosine transformation read from the read only memory, row elements of the matrix of discrete cosine transformation are obtained by carrying out, a number of times equal to the number of row elements, the processes successively updating the registers based on the result of the calculations, and all the row and column elements of the matrix of discrete cosine transformation are obtained by carrying out, a number of times equal to the number of column elements, the calculations.