FIELD: radio engineering, communication.
SUBSTANCE: digital multimedia coder/decoder is proposed, which uses a method of flexible quantisation, making it possible to vary quantisation by different measurements of coded digital multimedia data, including spatial channels, channels of frequency subranges and colour channels. A codec efficiently applies an alarm circuit to alarm various shifts of flexible quantisation combinations for initial usage scenarios. When selection of a quantiser is available, the codec efficiently codes the current quantiser, determining a subset of quantisers, and indexes the current quantizer from the set.
EFFECT: provision of flexible quantisation by different measurements of coded digital multimedia data.
18 cl, 15 dwg
