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. 07, 2002
Filed:
Feb. 17, 2000
Shinsuke Tajiri, Tokyo, JP;
Koji Asami, Tokyo, JP;
Advantest Corporation, Tokyo, JP;
Abstract
A digitizer for converting an analog signal output from a semiconductor device to a digital signal, includes: N Analog-to-Digital converters (ADC's) ( ), which sequentially convert the analog signal output from the semiconductor device to the digital signal, a phase error term being denoted &tgr;; an N-way time interleaving unit ( ) which interleaves the digital signals from said ADC's in sequence and produces data sequence; and a Fourier Transformation (FT) processing unit ( ) for performing FT processing on the data sequence output from said N-way time interleaving unit, the FT processing unit including a butterfly operation unit ( ) which inserts a phase error correcting factor to a butterfly operation performed by said butterfly operation unit, so as to correct &tgr;.