Patent · US Expired

Digital filter combination for interpolation

US7406492B1 · kind B1 · utility

0Cited by

6References

7Claims

0Family size

Assignee

Micronas GmbH · DE

Inventors

Andreas Menkhoff · Oberhaching, DE
Herbert Alrutz · Glückstadt, DE

Key dates

Filing date	Dec 4, 1997
Grant date	Jul 29, 2008
Priority date	—
Expiry date	Dec 4, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG06F17/17
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A digital filter combination for interpolating primary sample values of a sampled signal using an mth-order discrete-time filter and a kth-order continuous time interpolation filter, with m≧3 and k≧2, wherein the discrete-time filter forms n secondary sample values from at least m+1 primary sample values at equal time intervals, with n≧m, and the continuous-time interpolation filter forms from at least part of the n secondary sample values an interpolated value whose temporal position with respect to that of the primary sample values is predeterminable by a normalized interpolating instant dp=tin/T, where tin is the absolute interpolating instant, and T is the period of the primary sampling rate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.