| 摘要 |
PROBLEM TO BE SOLVED: To provide the quantization number deciding device of a video system, which can realize optimum quantization. SOLUTION: The target bit of the macro block unit of data obtained by calculating the discrete cosine transformation coefficients and calculating the activation degree in a macro block unit are calculated, the discrete cosine transformation coefficients of a discrete cosine transformation means 101 are quantized, the actual number of generated bits, which executes variable length encoding, is calculated and code length is calculated. The code length is compared with the calculated target bit. Data obtained by the comparison is calculated and the number of quantization is decided. The number of quantization is outputted to a quantization means 103. |
