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. 10, 2009
Filed:
Mar. 15, 2005
Applicant:
Hideyoshi Yoshimura, Yamatokoriyama, JP;
Inventor:
Hideyoshi Yoshimura, Yamatokoriyama, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 15/00 (2006.01); G06K 9/40 (2006.01); G06T 5/00 (2006.01); H04N 1/407 (2006.01); H04N 1/409 (2006.01); H04N 1/38 (2006.01); H04N 1/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pseudo-random number generator comprises a controller, a plurality of LFSRs, a FIR filter and a normalizer. The pseudo-random number generator initializes the LFSRs in such a manner that each LFSR has a predetermined phase difference with the other LFSRs, sets the coefficient of the FIR filter in accordance with the desired frequency characteristic of a noise signal, and sets a parameter in the normalizer. The operation of the LFSRs is started, thereby acquiring a noise signal having the desired frequency characteristic.