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. 19, 2002
Filed:
Jun. 04, 2001
Applicant:
Inventors:
Koji Takano, Ogaki, JP;
Fumiaki Nagao, Gifu, JP;
Assignee:
Sanyo Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/710 ;
U.S. Cl.
CPC ...
G06F 1/710 ;
Abstract
A digital filter is provided with a plurality of selectors. Switchover from one selector to another switches the digital filter operation between a separation filter function and a synthesis filter function. When the digital filter functions as either separation filter or synthesis filter, it switches over between the functions of multiplying data by a filter coefficient and multiplying data by an attenuation coefficient. The entire digital filter circuit size can thus be reduced.