HIGH EFFICIENCY ENCODING METHOD

摘要

PURPOSE:To provide a high efficiency encoding method with few signal deterioration accumulation due to the repeat of coding/decoding. CONSTITUTION:It is judged whether or not data inputted from an input terminal 101 is the one to which coding/decoding processing is applied, and when it is the data receiving the coding/decoding processing, the quantization characteristic of the data is obtained by estimating at a quantization characteristic estimation circuit 109, and when a prescribed condition is satisfied, it is quantized at a quantization circuit 104 with predicted quantization characteristic. and is encoded at an encoder circuit 105. In this way, since the data can be quantized with the same quantization characteristic in the repeat of coding/ decoding, the accumulation of signal deterioration can be minimized.