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:
May. 24, 2011
Filed:
Apr. 06, 2009
Tetsuichi Nakae, Ome, JP;
Tetsuichi Nakae, Ome, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A product-sum operation circuit has delay circuits of the first to the (n−1)th stage for delaying musical tone data, multiplying circuits-(n−1) for multiplying the musical signal data or the delayed musical signal data output from the delay circuits by impulse response coefficients, and adders-(n−1) for summing up data output from the multiplying circuits. The product-sum operation circuit is provided with a feed back circuit. The feed back circuit includes a multiplying circuitthat receives the delayed data from the delay circuit at the (n−1)th stage and multiplies the received data by a multiplication coefficient, and an adderfor adding data from the multiplying circuitto the delayed data from the delay circuit at the 'p'th stage.