发明名称 Diversity reception having a plurality of antennas for use with moving vehicles
摘要 A diversity reception apparatus which has a plurality of antennas and in which one of the antennas having the best receiving condition is automatically selected and connected to a broadcasting signal receiver. The diversity reception apparatus has a feature in that after demodulated signals, obtained by the receiver respectively corresponding to the plurality of antennas, are converted into digital signals by an A/D converter, the best demodulated signal and the antenna corresponding thereto are selected by comparing the digital signals with each other, and that the width of a switch driving pulse from a switch driving pulse generator is made not more than 3 (my)s.
申请公布号 US5303396(A) 申请公布日期 1994.04.12
申请号 US19910710811 申请日期 1991.06.05
申请人 HITACHI, LTD.;HITACHI VIDEO & INFORMATION SYSTEMS, INC.;HITACHI AUTOMOTIVE ENGINEERING CO., LTD. 发明人 OOYAGI, KAZUHIRO;HOTTA, NOBUTAKA;SHINKAWA, KEIRO
分类号 H04B7/08;H04N5/44;(IPC1-7):H04B17/02 主分类号 H04B7/08
代理机构 代理人
主权项
地址