Parallel encoding/decoding of DCT compression/decompression algo

Details Parallel encoding/decoding of DCT compression/decompression algo Parallel encoding/decoding of DCT compression/decompression algo

1992-10-02

1995-01-03

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348408, H04N 7133

Patent

active

053790707

ABSTRACT:
Encoding and decoding speed in using DCT and IDCT algorithms is enhanced by parallel operation of coding and decoding devices. A frame of image data can be vertically sliced with each slice operated on by a dedicated encoding device and with the encoded slice data concatenated to form the encoded frame of data. Decoding speed is increased by using a plurality of decoding devices in parallel with each decoder having a Huffman decoder and a coefficient dequantizer through which all coded data flows. Only assigned blocks of data are operated on by the IDCT unit in each decoder. Each decoder device can have a plurality of IDCT units for operating on assigned blocks of data.

REFERENCES:
patent: 4293920 (1981-10-01), Merola
patent: 5130797 (1992-07-01), Murakami et al.
patent: 5170259 (1992-12-01), Niihara

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