视频编码器作为一个实体，通过不同的控制块映射不同的编码通道，通过消息传递机制与其他实体进行通信协作。

As an independent entity, video coder USES different control blocks for different coding channels, and communicates with other entities through a 'message delivery' mechanism.

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“自上而下”和“自下而上”宏块划分模式选择算法首先作为编码器的快速算法被提出。

The top-down and bottom-up mode selection schemes were first introduced as fast mode decision algorithms for video encoders.

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同时，在JPEG 2000中基于子带、码块和比特平面的编码都可以并行实现。 因此，MQ编码器的效率就成了JPEG 2000硬件高速实现需要解决的关键问题。

The MQ coder is adopted in JPEG2000. In EBCOT algorithm, the tiles, code-block, bit-plane all can be implemented using parallel structure.

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