论文部分内容阅读
以运用TMS320C6200定点DSP芯片完成MPEG-4标准中DCT系数量化为例,简要介绍MPEG-4标准的量化方法,提出一种用定点乘法和移位运算代替量化过程中的除法和饱和运算的方法,并实现了快速运算。
Taking the TMS320C6200 fixed-point DSP chip as an example, the quantization of DCT coefficient in MPEG-4 standard is taken as an example. The quantization method of MPEG-4 standard is introduced briefly. A method of substituting fixed-point multiplication and shift operation for the division and saturation in quantization process is proposed. And to achieve fast computing.