Patent ID: 7868739

Claim:
A system for improving a function of reading information from a Radio Frequency IDentification (RFID) tag, the system comprising: RFID tags installed on a variety of objects, each tag storing information of its associated object and upon detection of a signal based on an effective frequency range, transmitting the information; writers spaced apart at regular intervals and installed near the RFID tags, the writers writing an instruction informing whether it is possible to read information from an RFID tag in an area; and a terminal having a read-write tag in which the instruction by the writer is written at a time of entering the area where the RFID tags are installed, a terminal controller for determining a start or stop of a read function based on the instruction of the read-write tag, and an RFID reader for starting to read the information from the RFID tag based on the effective frequency range upon receipt of a start command from the terminal controller and for stopping reading from the RFID tag when the RFID reader receives a command of stopping the read function from the terminal controller.