PURPOSE: To provide a data transmission system capable of obtaining a prominent advertising effect in a specific service area using a specific small power and feeble radio waves, etc.
CONSTITUTION: The data transmission system is installed at a message post, etc., and is constituted of a miniature transmission station for advertisement which transmits data on a radio wave of a specific frequency, and a receiver 10 equipped with a pager function capable of receiving the radio wave form the miniature transmission station for advertisement, and the receiver 10 is equipped with an antenna 11, a receiver (reception circuit) 12 which receives the radio wave of the specific frequency, a CPU 13 which controls each part, an EERPROM 14 in which an ID code is stored, an amplifier 15, a speaker 16, a switch(SW) 17, and a power unit 18, etc., and the CPU 13 discriminates the receiving state of the radio wave of the specific frequency at prescribed time intervals, and sets data transmitted on the radio wave to a state to be received corresponding to a discrimination result (the application of a power source or the switching of frequency).
TSUZUKI HANZO
NAKAMURA TSUTOMU
