In many real systems, such as digital camera, videophone, camcorder, pocket PC, and so on, chip implementation is necessary because of the exact limitation of rate and area.

• 在很多实际系统中，如数码相机、可视电话、便携式摄像机和掌上电脑等，考虑到速度和面积的要求，需要用芯片实现压缩系统。