RADIO FREQUENCY IDENTIFICATION (RFID) DEVICE

• US 20110148601A1
• Filed: 04/06/2010
• Published: 06/23/2011
• Est. Priority Date: 12/23/2009
• Status: Abandoned Application

• Current Assignee: Hynix Semiconductor Incorporated (SK Hynix Inc.)
• Original Assignee: Hynix Semiconductor Incorporated (SK Hynix Inc.)
• Inventors: KANG, Hee Bok
• Application Number:
  US12/755,267
• Publication Number:
  US 20110148601A1
• Time in Patent Office: Days
• US Class Current: 340/10.34
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: H04Q 2213/13095 PIN / Access code, authentication

Abstract

A radio frequency identification (RFID) device is disclosed. The RFID device is configured to read/write data in response to a radio frequency (RF) signal received from an antenna unit. The RFID device includes an event controller, a connection unit, and a driving controller. The event controller outputs a control signal for executing a specific event, if a command signal generated by the RF signal corresponds to predetermined specific event data. The connection unit is connected to an external driving device of the RFID device. The driving controller outputs a driving signal controlling an operation of the driving device to the connection unit in response to the control signal.

Claims

1. A radio frequency identification (RFID) device configured to read/write data in response to a radio frequency (RF) signal received from an antenna unit, the RFID device comprising:

an event controller configured to receive a command signal generated according to the RF signal and output a control signal if the command signal corresponds to a reference event provided to the event controller;

a connection unit configured to be coupled to an external driving device of the RFID device; and

a driving controller configured to output a driving signal for controlling an operation of the driving device to the connection unit in response to the control signal.

2. The radio frequency identification (RFID) device according to claim 1, wherein the event controller includes one or more reference events that are predefined, the reference events including one or more of the following events:

a number of memory read operations of a specific address, a number of memory write operations of a specific address, a number of operations of a specific command, and a number of password access operations.

3. The radio frequency identification (RFID) device according to claim 1, wherein the event controller includes:

a. buffer configured to receive the command signal and output a signal;

a command detector configured to extract specific event data from the output signal of the buffer;

an event data counter configured to count according to a value of the specific event data and output count data;

a comparator configured to compare the count data of the event data counter with a predefined reference value that corresponds to the reference event; and

an event output unit configured to output the control signal in response to an output result of the comparator, the control signal being used to execute a specific event.

4. The radio frequency identification (RFID) device according to claim 3, wherein the event controller further includes a reference event data generator configured to generate the predefined reference value.

5. The radio frequency identification (RFID) device according to claim 3, wherein the event controller further includes a reset command detector configured to output a reset signal if a reset command is detected from the output signal of the buffer.

6. The radio frequency identification (RFID) device according to claim 5, wherein the event data counter resets an accumulated count value in response to the reset signal.

7. The radio frequency identification (RFID) device according to claim 3, wherein the command detector outputs an event-up or event-down signal when the signal output by the buffer is associated with an event command.

8. The radio frequency identification (RFID) device according to claim 3, wherein the command detector receives a new event command signal as an input when the command signal does not correspond to the specific event data.

9. The radio frequency identification (RFID) device according to claim 3, wherein the comparator outputs an activated output signal when output data of the event data counter corresponds to the reference value, and receives a new event command signal as an input when output data of the event data counter is different from the reference value.

10. The radio frequency identification (RFID) device according to claim 1, wherein the connection unit includes a pad connected between the driving device and the driving controller.

11. The radio frequency identification (RFID) device according to claim 1, further comprising:

a voltage multiplier configured to generate a power-supply voltage of the RFID device;

a demodulator configured to generate the command signal by demodulating the RF signal;

a digital unit configured to generate process signals in response to the command signal;

a memory unit configured to read/write data in response to the process signals; and

a modulator configured to modulate a response signal received from the digital unit.

12. The radio frequency identification (RFID) device according to claim 11, wherein the event controller is included in the digital unit.

13. The radio frequency identification (RFID) device according to claim 11, further comprising:

a power-on reset unit configured to output a power-on reset signal to the digital unit in response to the power-supply voltage; and

a clock generator configured to generate a clock signal in response to the power-supply voltage, and output the generated clock signal to the digital unit.

14. The radio frequency identification (RFID) device according to claim 11, wherein the memory unit includes a non-volatile ferroelectric memory.

15. The radio frequency identification (RFID) device according to claim 1, wherein the driving device is adapted to control a light emitting diode (LED).

16. The radio frequency identification (RFID) device according to claim 1, wherein the driving device is adapted to control a motor.

17. The radio frequency identification (RFID) device according to claim 1, wherein the driving device is adapted to control a speaker.

18. The radio frequency identification (RFID) device according to claim 1, wherein the specific event data is predefined in a reference value generator in response to the RF signal.