DATA BROADCASTING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an HF data broadcasting system using an IP network.SOLUTION: A data broadcasting system which uses an HF band as a frequency band comprises: a plurality of broadcasting bases equipped with data broadcasting devices capable of broadcasting at a plurality of frequencies; a central base equipped with a controller which delivers messages to the broadcasting bases; and mobile receiving stations equipped with receiving devices. The central base delivers the messages to the broadcasting bases using an IP network. Each broadcasting base makes the messages conformed on a time axis and broadcast it. The receiving station diversity-receives the message broadcasted by the broadcasting bases at a plurality of frequencies.SELECTED DRAWING: Figure 3