Patent ID: 7471186

Claim:
A radio remote control system, comprising: a controlled apparatus that has first radio communication means; and a radio remote controller that has second radio communication means, operating means, and display means, and performs data communication by radio with the controlled apparatus to remotely control the controlled apparatus; the controlled apparatus transmitting monitor data indicating an operation state of the controlled apparatus to the radio remote controller at predetermined timing and, when operation instruction data instructing operation of the controlled apparatus is received from the radio remote controller, operating the controlled apparatus according to the operation instruction data; and when the monitor data is received, the radio remote controller displaying an operation state of the controlled apparatus corresponding to the monitor data on the display means and, when the operating means is operated, transmitting the operation instruction data corresponding to the operation to the controlled apparatus; wherein the monitor data includes transmission start time information indicating next start time of transmission of the monitor data by the controlled apparatus, and the radio remote controller includes state switching means for, when the monitor data is received, setting the second radio communication means in a standby state, in which power consumption is smaller than a data receivable state and data reception is impossible, until start time of reception of monitor data set near the next start time of transmission of monitor data acquired from the monitor data unless the operating means is operated and, when the start time for reception of monitor data has come, switching the second radio communication means from the standby state to the data receivable state, wherein the state switching means switches the second radio communication means to data transmittable state, in which data transmission is possible, when the operating means is operated in the standby state and switches the second radio communication means to the data receivable state when the transmission of the operation instruction data ends, and when the operation instruction data is received, the controlled apparatus transmits new monitor data at the time when predetermined processing applied to the operation instruction data ends regardless of the next time of transmission according to transmission time information in the monitor data transmitted last time.