| 摘要 |
PROBLEM TO BE SOLVED: To provide a network follow system which can follow a network without using the list information given from a broadcasting station, never shifts the network to the broadcasting station even out of a service area as long as the receiving state is satisfactory and also can shift the network even within the service area as long as the receiving state is not satisfactory due to a topographical influence, etc. SOLUTION: This system includes a preset memory 13 which is connected to a measurement means 14 that is contained in a navigation system and measures the position information and then adds the position information on a preset spot and the radius of a service area measured from this position information to the telecasting station frequency and/or the radio broadcasting station frequency to store them, and a reception control means 11 which receives the series station corresponding to the current position after reading it out of the memory 13. |
