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:
Jul. 13, 2009
Filed:
Aug. 18, 2003
Masahiro Iwadare, Tokyo, JP;
Masahiro Iwadare, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In an apparatus for carrying out a linear transform calculation on a product signal produced by multiplying a predetermined transform window function and an apparatus input signal, an FFT part () carries out fast Fourier transform on a processed signal produced by processing the product signal in a first processing part (). As a result, the FFT part produces an internal signal which is representative of a result of the fast Fourier transform. A second processing part () processes the internal signal into a transformed signal which represents a result of the linear transform calculation. The apparatus is applicable to either of forward and inverse transform units ().