Patent ID: 6721536
Filing Date: 2004-04-13
Classification: G08G,H04H

Abstract:
An on-demand type radio transmitting/receiving apparatus for selecting, from digital satellite radio broadcasting or digital ground radio broadcasting simultaneously broadcast to many unspecified persons, only information which matches a current position and current time of a car driven by a user and matches desired information registered in advance by the user, and presenting the information to the user, comprising:a commercial program which stores commercial broadcasting information to which classification information of a content, and time information and position information, which represent effective time and position of the content, respectively, are attached; a commercial broadcasting device which serves as a digital radio broadcasting device on a broadcasting station side, including the digital satellite radio broadcasting or digital ground radio broadcasting, and always continuously periodically broadcasts a plurality of commercial programs as a unit; a taste storage device for storing a type of information desired by the user; a time storage device for holding the latest current time; a position storage device for holding the latest position information; an address & longitude/latitude correspondence device which incorporates a correspondence table of a normal address and longitude/latitude information and, upon receiving an address as an input, outputs corresponding longitude/latitude information; a commercial program selector which receives the commercial program, transfers a value representing an address as position information in the commercial program to said address & longitude/latitude correspondence device, receives longitude/latitude information converted from the address, compares the classification information, time information, and longitude/latitude information in the commercial program with values in said taste storage device, time storage device, and position storage device, and selects and outputs only a matching commercial program; and a reproducer for reproducing the content of the commercial program output from said commercial program selector.