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:
Feb. 25, 1992
Filed:
Mar. 23, 1990
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Apparatus for generating memory addresses for accessing and storing data in an FFT (Fast Fourier Transform) computation is provided. The FFT computation is typically performed by computing a plurality of FFT butterflies belonging to a plurality of ranks. The apparatus includes a butterfly counter for determining the current FFT butterfly being computed. The butterfly counter produces a plurality of butterfly carries. A rank counter for determining the rank of said current FFT butterfly being computed produces a rank number. Coupled to the rank and butterfly counters is incremental curcuitry, which generates an incremental number in response to the rank number and the butterfly carries. An adder circuitry coupled to the incremental circuitry adds the incremental number and a plurality of memory addresses to produce the FFT data memory addresses.