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, 2003
Filed:
Dec. 16, 1999
Fumitaka Asano, Urawa, JP;
Gram Corporation, , JP;
Abstract
A spectrum analysis method and apparatus for processing and displaying time series data. The time series data in digital form is decomposed into a plurality of frequency components by means of a set of band pass filters. Adjacent band pass filters have their cut-off frequencies shifted or offset from each other by their passing band widths. Amplitude information of the frequency components may be obtained. For example, the frequency components generated by the band pass filters may be sampled in amplitude at predetermined time intervals. Such sampled amplitudes are then transformed into corresponding densities of a predetermined color including a gray color according to a color (or gray) scale, and displayed on a screen on the basis of a time base of the screen.