发明名称 Road status data providing system
摘要 A road status data providing system includes a server for transmitting/receiving data via a communication line and a plurality of vehicle terminals. The server includes a transmitting/receiving unit for transmitting/receiving data to and from the plurality of vehicle terminals, a vehicle trend management database for managing vehicle trends of the plurality of vehicle terminals, and a totaling unit for totaling status data indicative of a status of vehicles at a prescribed point on the basis of the vehicle trend management database. Each of the vehicle terminals includes a transmitting/receiving unit for transmitting/receiving data to and from the server, a present position determining unit for determining the present position of the vehicle, and a creating unit for creating status data requesting information for acquiring the status data at the prescribed point.
申请公布号 US2003083812(A1) 申请公布日期 2003.05.01
申请号 US20020281279 申请日期 2002.10.28
申请人 PIONEER CORPORATION 发明人 WATANABE TOMO;ODA TAMAMI;SATO TSUYOSHI;SAITO YUKITAKA
分类号 G01C21/00;G08G1/01;G08G1/09;G08G1/0968;G08G1/0969;(IPC1-7):G01C21/34 主分类号 G01C21/00
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