| 摘要 |
<p>PURPOSE:To remarkably reduce the volume of calculation for the selection of reproducing vector by detecting the luminance change of an input signal by block unit and selecting the reproducing vector corresponding to the volume of the luminance change. CONSTITUTION:An inputted block is inputted to a vector quantizer 20 and a luminance change measuring and rank deciding part 10. At the luminance change measuring and rank deciding part 10, the luminance change of the inputted block is measured and a rank is decided corresponding to the volume of the luminance change, for example, 1, 2,...n from the smallest, and a rank information is sent to the vector quantizer 20, and also, is transmitted to a transmission path. At the vector quantizer 20, either of vector quantizers 1-n is selected and quantized corresponding to the rank information and the information quantized, and code information is sent to the transmission path. Thereby, the calculation volume for a selection at the vector quantizer can be reduced.</p> |
