Ocean Leo: Helicopter. This is M/V Ocean Leo. I am now making identificationsignal, over.
直升机： “海洋里奥”船，这是直升机。请通过向我打信号灯以识别你船。请讲。
2
The invention discloses a back-off method and a back-off device, and a method and a device for detecting a radio-frequency identificationsignal state, and belongs to the field of communications.
本发明公开了一种退避方法和装置及检测射频识别信号状态的方法和装置，属于通信领域。
3
If a special tag-reader is waved near the arm, a radio signal prompts the chip to transmit an identification number which is used to call up information about the wearer in a computer database.