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:
Apr. 23, 2002
Filed:
Jun. 04, 1999
Akira Nara, Tokyo, JP;
Sony/Tektronix Corporation, Tokyo, JP;
Abstract
This invention relates to a new type real time signal analyzer that has both merits of a conventional real time FFT analyzer and a conventional vector signal analyzer and clears both demerits of them. This apparatus has a FFT processor for FFT processing time domain data in real time, a FIFO memory for delaying the time domain data before the FFT process, and a double port memory for storing FFT processed frequency data from the FFT processor and delayed time domain data read out from the FIFO memory . The delay time of the FIFO memory is set up according to the process time of the FFT processor that allows to secure time correspondence between the delayed time domain data and the frequency domain data. Therefore it respectively provides the data of the time domain and the frequency domain in real time at the same time that are synchronized each other.