Patent ID: 8305195

Claim:
A radio frequency identification (RFID) communication system that uses a designated channel for sending certain commands from a reader and a standard channel for other RFID communications, comprising: the reader, when actuated, initializing the designated channel and transmitting at least one designated message at a first time interval through the designated channel, wherein the designated channel and the standard channel are different channels; and at least one active RFID tag comprising: a channel initializing module, when actuated, initializing the designated channel from an idle state to a first power state to receive signals from the reader though the designated channel; a receiving module, triggering a receiving state at a second time interval to receive the designated message; an identification (ID) module, which, after receiving the designated message, compares an ID code recorded in the designated message with a pre-determined ID code and determines the validity of the designated message according to the comparison result; and a processing module, when the designated message is valid, performing processes corresponding to an executing routine command included in the designated message, wherein the tag uses the standard channel to communicate with the reader and the standard channel operates at a second power state which is higher than the first power state.