Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2006-04-04
2006-04-04
Ngo, Chuong D. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S406000
Reexamination Certificate
active
07024443
ABSTRACT:
In a method for performing a fast-Fourier transform (FFT), input data samples are written to a storage instance in a data input step, then subjected to a processing step in which the stored input samples are read out of the storage instance and processed in accordance with a transformation algorithm. The resulting output data samples are written back to the storage instance and, in a transformed data output step, read out of the storage instance, successively received batches of the input data samples being fed cyclically to a plurality of such multiple-function storage instances. Each batch is fed to a respective storage instance such that, at any given time during performance of the method, the input, processing and output steps are being performed simultaneously in respect of different batches using different respective storage instances. For each received data input batch, the processing step comprises a plurality of calculation passes creating intermediate data values which are stored between passes in both the respective multiple function storage instance and a further storage instance which is substantially dedicated for use in such processing steps. The invention also includes a related method for performing an inverse fast-Fourier transform (IFFT), as well as FFT and IFFT systems.
REFERENCES:
patent: 3871577 (1975-03-01), Avellar et al.
patent: 4787055 (1988-11-01), Bergeon et al.
patent: 5583803 (1996-12-01), Matsumoto et al.
patent: 6115728 (2000-09-01), Nakai et al.
patent: 6430587 (2002-08-01), Orling
patent: WO 98/18083 (1998-04-01), None
patent: WO 02/48901 (2002-06-01), None
Abouseido Maamoun
Davey Stephen W.
Forrest Kevin W
1021 Technologies KK
Ngo Chuong D.
Oliff & Berridg,e PLC
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