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:
Jun. 03, 1997
Filed:
Sep. 26, 1994
Fujitsu Limited, Kawasaki, JP;
Abstract
An apparatus for detecting periodicity in time-series data, which is to be processed, includes a specifying unit for designating positions of coordinates in n-dimensional phase space, which are indicated by incoming time-series data and time-series data of the number n-1 that have been already input, arranged in series with the incoming time-series data; an extraction unit for estimating the frequency of emergence in the positions of the coordinates, by taking into consideration a fluctuation in the time-series data, and extracting at least one characteristic point from the coordinates on the basis of the frequency of emergence; a detection unit for checking whether or not the characteristic point at the start point extracted by the extraction unit conforms to the characteristic point at the end point, and detecting periodicity information about the periodicity formed by every characteristic point extracted by the extraction unit; and an output unit for determining the periodicity in the time-series data on the basis of the thus detected periodicity information.