发明名称 MOBILE DEVICE, CENTER DEVICE AND LOCAL INFORMATION BROADCASTING SYSTEM
摘要 PROBLEM TO BE SOLVED: To provide a system for providing information corresponding to location information. SOLUTION: The local information broadcasting system is provided with a center device 400, a quasi-zenith satellite 220 for repeating a broadcasting signal that is broadcasted by the center device, and a mobile device 300 for receiving the broadcasting signal that is broadcasted by the center device 400 via the satellite 220, the center device 400 divides an area into a plurality of blocks and periodically transmit block information such as block information A or block information B corresponding to a block identifier, and the mobile device 300 positions its own location information, acquires a block identifier on the basis of the positioned location information, and outputs block information corresponding to the block identifier by extracting it from the broadcasting signal to be broadcasted. COPYRIGHT: (C)2005,JPO&NCIPI
申请公布号 JP2004312578(A) 申请公布日期 2004.11.04
申请号 JP20030106012 申请日期 2003.04.10
申请人 MITSUBISHI ELECTRIC CORP 发明人 IWAHASHI TSUTOMU;NAKAJIMA TSUTOMU
分类号 G01C21/00;G01C21/26;G08G1/09;G08G1/0969;H04H20/00;H04H20/28;H04H20/74;H04H60/51;H04H60/52;H04W4/06;(IPC1-7):H04Q7/34;G08G1/096;H04Q7/20;H04H1/00 主分类号 G01C21/00
代理机构 代理人
主权项
地址