MOBILE OBJECT COMMUNICATION SYSTEM

摘要

PURPOSE:To attain high speed communication and to reduce power consumption by supplying power to a data signal reception circuit at a high frequency band, thereby initiating its operation only when the transmission of the data signal is required. CONSTITUTION:A starting signal sent at low speed from the transmission means 11 of a stationary station side is received by a starting signal reception means 21 with the power supply always supplied thereto in a mobile object side communication equipment 2, the starting signal reception means 21 operates a switching means 23 to supply power to a data signal reception means 22 supplying a data with a high frequency band. The transmission means 11 starts the transmission of the data signal at high speed in succession to the starting signal and the data signal is received by the data signal reception means 22 whose operation is started through the supply of power. Since the starting signal is sent at the low speed, the frequency band of the starting signal reception means 21 receiving the starting signal is enough to be low. Thus, high speed data transmission is attained with respect the mobile object side communication equipment 2 and it is possible to reduce the power consumption of the communication equipment 2.