专利汇可以提供Encoding device and its method and decoding device and its method专利检索,专利查询,专利分析的服务。并且PURPOSE: To improve efficiency in an encoder(decoder) by adaptively adjusting configuration in accordance with a signal which is supplied by a context extracting means.
CONSTITUTION: The encoder 101 includes, for example, an entropy encoder device 104, an adaptive context extracting equipment 105, a probability estimating equipment 106 and a line interface 107. In this case, the used adaptive context extracting equipment 105 automatically adjusts the configuration of a lag interval to be used for defining a context. That is, in the adaptive context extracting equipment 105 to be used, correlation between signal values which are divided by the fixed lag interval, that is, execution measurement is obtained and preserved. When positive or negative 'high' correlation is discovered in the lag interval, an advance mark advancing to a present mark which is encoded(decoded) by the lag interval is incorporated in context configuration. Thus, encoding(decoding) efficiency is improved.
COPYRIGHT: (C)1991,JPO,下面是Encoding device and its method and decoding device and its method专利的具体信息内容。
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