Discrete cosine transformer

Details Discrete cosine transformer Discrete cosine transformer

1981-04-20

1983-05-24

Malzahn, David H.

Boots, shoes, and leggings

G06F 1531

Patent

active

043853633

ABSTRACT:
An improved method and apparatus for calculating discrete cosine transform coefficients from a plurality of digitalized data is disclosed. The pipelined processor utilizes two basic types of circuits arranged in five computational stages. Shuffle and add circuits operate upon prearranged data components at the first, second and fourth stages, while shuffle, add and multiply circuits are used at the third and fifth stages.

REFERENCES:
patent: 3920974 (1975-11-01), Means
patent: 4092723 (1978-05-01), Picquendar et al.
patent: 4152772 (1979-05-01), Speiser et al.
patent: 4196448 (1980-04-01), Whitehouse et al.
Ahmed et al., "Discrete Cosine Transform", IEEE Trans. on Computers, Jan. 1974, pp. 90-93.
Haralick, "A Storage Efficient Way to Implement the Discrete Cosine Transform", IEEE Trans. on Computers, Jul. 1976, pp. 764-765.
Chen et al., "A Fast Computational Algorithm for the Discrete Cosine Transform", IEEE Trans. on Communications, Sep. 1977, pp. 1004-1009.
Tseng et al., "On Computing the Discrete Cosine Transform", IEEE Trans. on Computers, Oct. 1978, pp. 966-968.
Murray, "Microprocessor System for TV Imagery Compression", SPIE vol. 119, Application of Digital Image Processing, (IOCC 1977), pp. 121-129.
Whitehouse et al., "A Digital Real Time Intraframe Video Bandwidth Compression System", SPIE vol. 119, Application of Digital Image Processing, (IOCC 1977), pp. 64-78.

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