嵌入式多媒体设备要求具有更高的处理能力、极低的功耗,以延长电池供电设备的工作时间。提高CPU的工作频率或者增加CPU内并行的工作单元可提高CPU处理能力,但相同工艺下更高的频率要求更高的工作电压和更大的功耗,并行的工作单元只能利用局部指令的并行性,一些单元得不到充分利用,造成功耗的浪费。使用不同类型的处理器并行工作,充分发挥各个CPU的处理优势,可有效降低多媒体设备的功耗。 Embedded multimedia devices require higher processing power, low power consumption, to extend the working hours of battery-powered devices. Raising the CPU’s operating frequency or adding parallel units of work in the CPU increases CPU processing power, but higher frequencies under the same process require higher operating voltages and greater power consumption. Parallel units of work can only utilize local instructions Parallelism, some units are not fully utilized, resulting in a waste of power. Using different types of processors in parallel, give full play to the processing advantages of each CPU can effectively reduce the power consumption of multimedia devices.