Two-dimensional discrete cosine transformation circuit

Details Two-dimensional discrete cosine transformation circuit Two-dimensional discrete cosine transformation circuit

1996-06-06

1998-06-16

Mai, Tan V.

Boots, shoes, and leggings

36472503, G06F 1714

Patent

active

057681678

ABSTRACT:
A two-dimensional discrete cosine transformation circuit performs 8 points.times.8 points two-dimensional discrete cosine transformation. The circuit comprises a first stage calculation circuit, a second stage calculation circuit, and a third stage calculation circuit. The first stage calculation circuit includes sixteen two-dimensional butterfly computing circuits. The second stage calculation circuit includes four two-dimensional butterfly computing circuits, eight first one-dimensional butterfly computing circuits and eight second one-dimensional butterfly computing circuits. The third stage calculation circuit includes nine tensor product computing elements.

REFERENCES:
patent: 5408425 (1995-04-01), Hou
patent: 5539836 (1996-07-01), Babkin
patent: 5598361 (1997-01-01), Nagamatsu et al.
Loeffler et al., "Practical Fast 1-D DCT Algorithms with 11 Multiplications", Proce. of Intl. Cong. on Acoustics, Speech, and Signal Processing, (1989), pp. 988-991.
Kuroda et al., "Realization of Video Rate (inverse) DCT by 16-Bit General Purpose DSP", Paper of the Institute of Elec., Info. & Commun. Engineers, (1983), p. A-77.

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