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目前，家庭娱乐业的革命正在迅猛发展。与卫星、电缆及其它地面网络相连的家庭网关使供应商与用户之间可以高速率进行数据传输，另外，可通过电话线、电缆调制解调器、蜂窝移动电话及其它媒介提供上行链路的传送。家庭网关通过其核心设备——数字电视接收机，使文本、声音、图
At present, the revolution in home entertainment industry is rapidly developing. Home gateways connected to satellites, cables, and other terrestrial networks allow high-speed data transfer between providers and subscribers, and in addition provide uplink transmission over telephone lines, cable modems, cellular phones and other media. Home gateway through its core device - digital TV receiver, make text, sound, picture