Rfid tag and method receiving rfid tag signal
AssigneeSamsung Electronics Co., Ltd.
InventorsIl-jong SONG, Byeong-hoon LEE, Seung-won LEE, Chul-joon CHOI
Life of this patent
Estimating the term…
Abstract
Provided are a Radio Frequency IDentification (RFID) tag with a signal reception method. The RFID tag includes a demodulator that receives a read signal containing read data. The demodulator includes; a voltage generating circuit that provides a first voltage signal and a second voltage signal derived from the received read signal, an inverter that provides a data pulse signal indicative of the read data by inverting the second voltage signal using an inverting voltage defined in relation to the first voltage signal, and a buffer that recovers the read data by buffering the data pulse signal.
Claims20
A Radio Frequency IDentification (RFID) tag comprising:
- a demodulator that receives a read signal containing read data, wherein the demodulator comprises:
- a voltage generating circuit that provides a first voltage signal and a second voltage signal derived from the received read signal;
- an inverter that provides a data pulse signal indicative of the read data by inverting the second voltage signal using an inverting voltage defined in relation to the first voltage signal;
- and
- a buffer that recovers the read data by buffering the data pulse signal.
A method for receiving a read signal using a Radio Frequency IDentification (RFID) tag within an RFID system, the method comprising:
- generating a first voltage signal from a received read signal;
- generating a second voltage signal from the received read signal, the second voltage signal having a voltage difference from the first voltage signal;
- generating an inverting voltage in response to the first voltage signal;
- obtaining a data pulse signal from inverting the second voltage signal using the inverting voltage;
- and
- recovering read data by buffering the data pulse signal.
Dependencies are inferred from the claim text.