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针对PCI总线上得到的数据的阵发性 ,介绍一种MPEG 2传输流实时解码及码流发送系统的硬件和软件设计方案 ,该方案通过在PCI接口芯片的一侧增加数据缓存器来实现。此系统在一块PCI插卡上实现 ,支持标准清晰度解码及多种视频输出方式。实验表明 ,码流发送速率最高可达 4 0Mbps。
Aiming at the paroxysm of data obtained on PCI bus, a hardware and software design of MPEG 2 transport stream real-time decoding and code stream sending system is introduced. This scheme is realized by adding data buffer on one side of PCI interface chip. This system is implemented on a PCI card, supporting standard definition decoding and multiple video output methods. Experiments show that the code stream sending rate up to 40Mbps.