广播、通讯事业的发达，因特网的问世，计算机的普及，以及人们对生活质量更高的要求，都给住宅信息化带来了广阔前景。1家庭内可独立享用广播、CAW、通信服务现在住宅信息化推进的HII（HomeInformationInfraxture），对于多信道的图像广播服务和高速通信服务（ISDN），考虑将 The development of broadcasting and communications, the advent of the Internet, the popularization of computers, and people’s higher quality of life have brought about a bright future for residential information. 1HII (Home Information Infra-red), which is capable of independently enjoying broadcast, CAW, and communication services in homes, will be considered for the multi-channel image broadcasting service and high-speed communication service (ISDN).