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:
Sep. 25, 2001
Filed:
Mar. 08, 1999
Applicant:
Inventors:
Xiaomang Zhang, Tenri, JP;
Naoyuki Fukuda, Nara-ken, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G 7/19 ;
U.S. Cl.
CPC ...
G06G 7/19 ;
Abstract
A Fourier transform apparatus includes: a signal generating section for generating a plurality of sine-wave signals and a plurality of cosine-wave signals; a plurality of analog circuits each having a respective circuit parameter corresponding to a respective Fourier coefficient, and each receiving the respective sine-wave signal and the respective cosine-wave signal which are generated by the signal generating section; and an operation section for performing an operation on each of outputs of the respective analog circuits and outputting the resultant respective analog signals.