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:
Dec. 15, 2015
Filed:
Apr. 08, 2013
Ntt Electronics Corporation, Yokohama-shi, Kanagawa, JP;
Yasuhiro Yamada, Yokohama, JP;
Yuichiro Koike, Yokohama, JP;
NTT ELECTRONICS CORPORATION, Yokohama, JP;
Abstract
A position coordinate difference calculation sectioncalculates a position coordinate difference between a position coordinate of an output digital signal and a position coordinate of an input digital signal close to it. AN FIR coefficient memorystores FIR coefficients of an FIR-LPF having such a characteristic as to cut off frequency components equal to or higher than ½ of an output sampling rate. When the position coordinate difference is input, the FIR coefficient memory outputs FIR coefficients corresponding to position coordinate differences between position coordinates of a certain number of input digital signals existing in the vicinity of the position coordinate of the output digital signal and the position coordinate of the output digital signal. AN FIR computation unitperforms FIR-LPF interpolation computation by using a certain number of the input digital signals and the FIR coefficients and obtains the output digital signal.