Method and device for calculating a discrete orthogonal...

Details Method and device for calculating a discrete orthogonal... Method and device for calculating a discrete orthogonal...

2005-06-07

2005-06-07

Ngo, Chuong Dinh (Department: 2124)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

06904445

ABSTRACT:
The invention comprises a method for calculating an orthogonal discrete transform on the basis of the DIT method in prescribed intermediate steps with the following steps: the data are read from a memory organized on page-for-page basis; the intermediate step prescribed by the transform is carried out; the resulting data are stored in a buffer memory; and the resulting data are written page-for-page from the buffer memory to the memory organized on a page-for-page basis. Suitable discrete orthogonal transforms are FFT, IFFT, DCT, IDCT and transforms of similar structure.

REFERENCES:
patent: 5844609 (1998-12-01), Filor et al.
patent: 6115728 (2000-09-01), Nakai et al.
patent: 6480631 (2002-11-01), So et al.
patent: 6505224 (2003-01-01), Kechriotis
patent: 4442958 (1996-06-01), None
Ma,et al.;A Hardwood Efficient Control of Memory Addressing for High-Performance FFT Processors;EEE Transactions on Signal Processing; vol. 48, No. 3, Mar. 2000.

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