Patent ID: 6778808
Filing Date: 2004-08-17
Classification: G08G,H04H

Abstract:
A route-adaptive on-demand radio communication system for a user of a vehicle and which is for providing, by using one of digital satellite radio broadcasting and digital surface wave radio broadcasting simultaneously broadcasted to unspecified recipients, said user with particular information matching a current time instant and a current location of the vehicle and matching desired information preliminarily registered by said user, said system comprising:a digital broadcasting apparatus, in a broadcasting station, for periodically broadcasting a plurality of broadcast programs by using said one of the digital satellite radio broadcasting and the digital surface wave radio broadcasting, each of said broadcast programs comprising a program content, a type information representative of a content type of said program content, and time information representative of a time period during which said program content is valid, and location information representative of a location where said program content is valid; a favorite storage for storing a desired type of information; a route storage in which pass point identifiers for a route, locations of said pass points, and a time interval between said pass points are stored; a program selector for receiving each of said broadcast programs, for comparing the type information of each of said broadcast programs with the desired type stored in the favorite storage, for comparing the location information of each of said broadcast programs with the location of each of said pass points stored in said route storage, and for selecting a matched one of said broadcast programs that includes the type information coincident with the desired type of said favorite storage and the location information coincident with the location of each of said pass points of said route storage; a broadcast program storage for storing said matched one of the broadcast programs as a stored broadcast program; a current time instant storage for holding a current time instant; a current location storage for holding a current location information; a reproduction program selector for comparing the time information and the location information of said stored broadcast program of said broadcast program storage with the values held in said current time instant storage and said current location storage, respectively, and for selecting said stored broadcast program as a selected broadcast program when said stored broadcast program had the time information and the location information coincident with the values held in said current time instant storage and said current location storage; and a reproduction unit for reproducing the selected broadcast program selected by said reproduction program selector.