Abstract:
Disclosed herein are a radio frequency identification (RFID) system and an operating method thereof. The RFID system includes an RFID tag and an RFID reader transmitting an initialization command to the RFID tag. The initialization command includes a field selecting a single tag accessing mode and a multi-tag processing mode. The RFID reader performs a single tag authentication procedure, which is a procedure of one-to-one accessing one RFID tag, in the case in which the field is set to the single tag accessing mode.
Abstract:
A tag apparatus communicating with a reader acquires a command from a signal that is received from the reader, converts data corresponding to the acquired command to a plurality of multi-level parallel data, and generates a plurality of tag load impedances based on bias voltages that are mapped to correspond to each level of the plurality of parallel data. Therefore, a signal having electrical energy corresponding to the plurality of tag load impedances is transmitted to the reader.
Abstract:
A tag of an apparatus for simultaneously identifying massive tags according to the present invention may include an analog circuit unit to communicate with a reader through an analog signal and to receive energy via magnetic coupling with the reader. Further, the tag may include a digital circuit unit to be supplied with power from the analog circuit unit. The digital circuit unit may support a sleep mode for the tag to stand by in a low power state after transmitting an identifier (ID) to the reader and a wait mode for controlling random access to the reader.