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    • 52. 发明公开
    • Predictive coding device
    • PrädiktiveKodierungsvorrichtung。
    • EP0324584A2
    • 1989-07-19
    • EP89300189.1
    • 1989-01-10
    • CANON KABUSHIKI KAISHA
    • Ishikawa, Hisashi
    • H03M3/04
    • H03M7/3044
    • A predictive coding device has an input terminal through which a sampled value (x i ) is input, a predicting circuit for outputting a predicted value (x̂) i for the sampled value which has been input through the input terminal, and a look-up table (12) arranged to receive, as a readout address, the sampled value (x i ) input through the input terminal and the predicted value (x̂ i ) and then to output a predictive coded value ( x i ). On the basis of the input sampled value (x i ) and the predicted value (x̂ i ), the predictive coding device determines the readout address for the look-up table (12) which stores a table providing the predictive coded value.
    • 预测编码装置具有通过其输入采样值(xi)的输入端子,用于输出通过输入端子输入的采样值的预测值(x /Δnd>)i的预测电路,以及 查找表(12),被布置为接收通过输入端输入的采样值(xi)作为读出地址和预测值(x / i),然后输出预测编码值(xi) 。 基于输入采样值(xi)和预测值(x / i),预测编码装置确定存储提供预测编码值的表的查找表(12)的读出地址 。