Mobile radio frequency identification reader, portable terminal having the same, and FR transmission power setting method thereof

An RF Tx power setting method comprising:

• selecting one of generatable RF Tx signals;
• and
• setting the selected RF Tx signal to an RF Tx signal which is used to read tag information from an RFID tag.

A portable terminal comprising:

• a radio frequency identification (RFID) reader which reads tag information from an RFID tag by transmitting an RF transmission (Tx) signal, the portable terminal;
• and
• a portable terminal control block which selects an RF Tx power of an RF Tx signal which is used to read the tag information from the RFID tag, and sets the selected RF Tx power to a Tx power of the RF Tx signal.

A radio frequency identification (RFID) reader which reads tag information from an RFID tag by transmitting an RF transmission (Tx) signal, the RFID reader comprising an RFID reader controller which sets an RF Tx power of the RF Tx signal to a Tx power of the RF Tx signal, wherein the RF Tx power is selected by an external device and used to read the tag information from the RFID tag.

A radio frequency identification (RFID) reader which reads tag information from an RFID tag by transmitting an RF transmission (Tx) signal, wherein the RFID reader sets an RF Tx power of the RF Tx signal to a Tx power of the RF Tx signal, wherein the RF Tx power is selected by an external device and used to read the tag information from the RFID tag.