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:
Nov. 03, 2015
Filed:
Dec. 31, 2011
Donglin Wang, Beijing, CN;
Shaolin Xie, Beijing, CN;
Jie Hao, Beijing, CN;
Xiao Lin, Beijing, CN;
Tao Wang, Beijing, CN;
Leizu Yin, Beijing, CN;
Donglin Wang, Beijing, CN;
Shaolin Xie, Beijing, CN;
Jie Hao, Beijing, CN;
Xiao Lin, Beijing, CN;
Tao Wang, Beijing, CN;
Leizu Yin, Beijing, CN;
Institute of Automation, Chinese Academy of Sciences, Beijing, CN;
Abstract
A multi-granularity parallel FFT computation device including three memories, a butterfly computation device, a state control unit, a data reversing network and a first selector. The three memories are each a multi-granularity parallel memory, and store butterfly group data and twiddle factors corresponding to the butterfly group data. The butterfly computation device perform computations of a butterfly group based on the butterfly group data outputted from the first selector and the corresponding twiddle factors outputted from one of the memories, and write a computation result back to the other two memories. The device can read butterfly group data and corresponding twiddle factors in parallel from the multi-granularity parallel memories with a specific R/W granularity. No memory conflict will occur in the read operation, and no additional process is required for sorting the read/written data.