Video data signal including a code string having a plurality of

Details Video data signal including a code string having a plurality of Video data signal including a code string having a plurality of

1998-12-31

2000-04-18

Le, Vu

Television

Bandwidth reduction system

Data rate reduction

348408, 382238, 386111, H04N 732

Patent

active

060521503

ABSTRACT:
A video coding/decoding apparatus comprises a prediction circuit that divides an input video signal into large regions and small regions in a hierarchical fashion and produces a prediction signal by performing prediction region by region, a subtracter for generating a prediction error signal for a prediction signal at the lowest level, a DCT circuit for coding a prediction error signal, a quantization circuit and a variable-length encoder, a variable-length encoder for coding the prediction mode and motion vector information obtained at each level from the prediction circuit, and a multiplexer for multiplexing the code strings obtained from the variable-length encoder and dividing them into the upper-layer and lower-layer code strings to output the code strings obtained at the variable-length encoder particularly as upper-layer code strings.

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patent: 5731840 (1998-03-01), Kikuchi et al.
patent: 5912706 (1999-06-01), Kikuchi et al.

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