RADIO FREQUENCY IDENTIFICATION SYSTEM

• US 20110063091A1
• Filed: 06/02/2010
• Published: 03/17/2011
• Est. Priority Date: 09/11/2009
• 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:
  US12/792,551
• Publication Number:
  US 20110063091A1
• Time in Patent Office: Days
• US Class Current: 340/10.51
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: H04Q 2213/13095 PIN / Access code, authentication

Abstract

A radio frequency identification (RFID) system allocates an identification (ID) code to a driving device using an RFID device such that each driving device can be wirelessly controlled at a remote site. The RFID system includes an RFID device which reads and writes data in response to a radio frequency (RF) signal received through an antenna unit. The RFID device includes a connection unit configured to be coupled to an external driving device, and a driving unit configured to output a driving signal for controlling the driving device to the connection unit in response to control signals generated by the RF signal.

Claims

1. A radio frequency identification (RFID) system, comprising:

an RFID device configured to read and write data in response to a radio frequency (RF) signal received through an antenna unit,

wherein the RFID device includes;

a connection unit coupled to an external driving device; and

a driving unit configured to output a driving signal to the connection unit in response to control signals generated by the RF signal, the driving signal being output to the connection unit in order to control the external driving device.

2. The RFID system according to claim 1, wherein the driving unit includes:

a register unit configured to output a driving control signal in response to the control signals; and

a digital analog converter (DAC) driver configured to convert the driving control signal received from the register unit into an analog signal and output the analog signal as the driving signal.

3. The RFID system according to claim 2, wherein the register unit includes:

a buffer configured to buffer input/output (I/O) data;

a register controller configured to generate a register control signal according to the control signals and a power-on reset signal;

a register configured to store the I/O data in response to the register control signal; and

a register output unit configured to generate the driving control signal in response to output data of the register.

4. The RFID system according to claim 3, wherein the register includes:

a pull-up unit configured to provide a power-supply voltage in response to a pull-up enable signal;

a first latch unit configured to latch data of first and second ends of a cell using the power-supply voltage;

an input/output (I/O) unit configured to provide the I/O data to the first and second ends of the cell in response to a write enable signal;

a non-volatile ferroelectric capacitor configured to store the data of the first and second ends of the cell as non-volatile data in response to a cell plate signal;

a second latch unit configured to latch the data of the first and second ends of the cell using a ground voltage; and

a pull-down unit configured to provide the ground voltage in response to a pull-down enable signal.

5. The RFID system according to claim 2, wherein the driving unit further includes:

a power register configured to control a power source of the DAC driver in response to an operation signal generated by the RF signal and a power-on reset signal.

6. The RFID system according to claim 1, wherein the RFID device further includes:

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

a power-on reset unit configured to output a power-on reset signal by detecting a power-supply voltage;

a clock generator configured to generate a clock signal in response to the power-supply voltage;

a modulator configured to modulate a response signal, and output the modulated response signal to the antenna unit;

a digital unit configured to interpret a command signal generated by the RF signal, and output the control signals to the driving unit; and

a memory unit configured to store an identification (ID) code wherein the memory unit includes a non-volatile ferroelectric memory.

7. The RFID system according to claim 1, wherein the RFID device further includes:

a power-supply voltage applying pad configured to provide a power-supply voltage to the RFID device; and

a ground voltage applying pad configured to provide a ground voltage to the RFID device.

8. The RFID system according to claim 1, wherein the connection unit includes:

an output pad coupled to the driving device through a connection pin.

9. The RFID system according to claim 1, wherein a driving object to be controlled by the driving device includes any one of a light emitting diode (LED), a motor, and a speaker.

10. The RFID system according to claim 1, wherein the RFID device further includes an electrostatic discharge (ESD) circuit.

11. A radio frequency identification (RFID) system comprising:

an RFID device configured to read and write data in response to a radio frequency (RF) signal received through an antenna unit,

wherein the RFID device includes;

a connection unit coupled to an external driving device;

a sensor control block configured to convert a sensing value detected by a sensing element into digital code data, and output the digital code data; and

a driving unit configured to output a driving signal for controlling the external driving device to the connection unit according to the digital code data and control signals generated by the RF signal.

12. The RFID system according to claim 11, wherein the sensor control block includes:

a sensing unit configured to include the sensing element so as to detect the sensing value;

a sensing signal processor configured to compensate for an offset of the sensing value detected by the sensing unit, and amplify the compensated sensing value;

an analog digital converter (ADC) configured to convert an output signal of the sensing signal processor into the digital code data; and

a sensing controller configured to control operations of the sensing signal processor and the ADC.

13. The RFID system according to claim 11, wherein the driving unit includes:

a register unit configured to store the digital code data and output a driving control signal in response to the control signals; and

a digital analog converter (DAC) driver configured to convert the driving control signal received from the register unit into an analog signal and output the analog signal as the driving signal.

14. The RFID system according to claim 13, wherein the driving unit further includes:

a power register configured to control a power source of the DAC driver in response to an operation signal generated by the RF signal and a power-on reset signal.

15. The RFID system according to claim 11, wherein the RFID device further includes:

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

a power-on reset unit configured to output a power-on reset signal by detecting a power-supply voltage;

a clock generator configured to generate a clock signal in response to the power-supply voltage;

a modulator configured to modulate a response signal, and output the modulated response signal to the antenna unit;

a digital unit configured to interpret a command signal generated by the RF signal, and output the control signals to the driving unit; and

a memory unit configured to store an identification (ID) code, wherein the memory unit includes a non-volatile ferroelectric memory.

16. The RFID system according to claim 11, wherein the RFID device further includes:

a power-supply voltage applying pad configured to provide a power-supply voltage to the RFID device; and

a ground voltage applying pad configured to provide a ground voltage to the RFID device.

17. The RFID system according to claim 11, wherein the connection unit includes:

an output pad coupled to the external driving device through a connection pin.

18. The RFID system according to claim 11, wherein the RFID device further includes an ESD circuit.

19. A radio frequency identification (RFID) system comprising:

an RFID device configured to read and write data according to a radio frequency (RF) signal received through an antenna unit,

wherein the RFID device includes;

a connection unit coupled to an external driving device;

a sensor interface unit configured to receive a sensing signal from an external sensor; and

a driving unit configured to output a driving signal for controlling the external driving device to the connection unit in response to an output signal of the sensor interface unit and control signals generated by the RF signal.

20. The RFID system according to claim 19, wherein the RFID device further includes:

a digital unit configured to process the sensing signal received through the sensor interface unit, and output the processed sensing signal to the driving unit.

21. The RFID device according to claim 20, wherein the RFID device further includes:

a sensing pad configured to transmit the sensing signal received from the sensor to the sensor interface unit.

22. The RFID system according to claim 21, wherein the sensing pad includes:

a first sensing pad configured to receive a serial clock signal;

a second sensing pad configured to receive serial data; and

a third sensing pad configured to receive an interrupt signal.

23. The RFID system according to claim 19, wherein the sensor interface unit includes:

a serial interface port configured to receive the sensing signal; and

a sensing controller configured to control the serial interface port.

24. The RFID system according to claim 19, wherein the driving unit includes:

a register unit configured to store sensing data received from the sensor interface unit and output a driving control signal; and

a digital analog converter (DAC) driver configured to convert the driving control signal received from the register unit into an analog signal and output the analog signal as the driving signal.

25. The RFID system according to claim 24, wherein the driving unit further includes:

a power register configured to control a power source of the DAC driver in response to an operation signal generated by the RF signal and a power-on reset signal.

26. The RFID system according to claim 19, wherein the RFID device further includes:

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

a power-on reset unit configured to output a power-on reset signal by detecting a power-supply voltage;

a clock generator configured to generate a clock signal in response to the power-supply voltage;

a modulator configured to modulate a response signal, and output the modulated response signal to the antenna unit; and

a memory unit configured to store an identification (ID) code, wherein the memory unit includes a non-volatile ferroelectric memory.

27. The RFID system according to claim 19, wherein the RFID device further includes:

a power-supply voltage applying pad configured to provide a power-supply voltage to the RFID device; and

a ground voltage applying pad configured to provide a ground voltage to the RFID device.

28. The RFID system according to claim 19, wherein the connection unit includes:

an output pad coupled to the external driving device through a connection pin.

29. The RFID system according to claim 19, wherein the RFID device further includes an ESD circuit.

30. A radio frequency identification (RFID) system, comprising:

an RFID device configured to read and write data in response to a radio frequency (RF) signal received through an antenna unit,

wherein the RFID device includes;

a connection unit coupled to an external driving device;

a micro-controller unit (MCU) control block configured to program code data and output programmed code data; and

a driving unit configured to output a driving signal for controlling the external driving device to the connection unit according to the programmed code data and control signals generated by the RF signal.

31. The RFID system according to claim 30, wherein the RFID device further includes:

a digital unit configured to process the programmed code data received from the MCU control block, and output the processed code data to the driving unit.

32. The RFID system according to claim 31, wherein the MCU control block includes:

an MCU processor configured to program the code data; and

an interface unit configured to control operations of the digital unit and the MCU processor.

33. The RFID system according to claim 30, wherein the driving unit includes:

a register unit configured to store the programmed code data and output a driving control signal; and

a digital analog converter (DAC) driver configured to convert the driving control signal received from the register unit into an analog signal and output the analog signal as the driving signal.

34. The RFID system according to claim 33, wherein the driving unit further includes:

a power register configured to control a power source of the DAC driver in response to an operation signal generated by the RF signal and a power-on reset signal.

35. The RFID system according to claim 30, wherein the RFID device further includes:

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

a power-on reset unit configured to output a power-on reset signal by detecting a power-supply voltage;

a clock generator configured to generate a clock signal in response to the power-supply voltage; and

a modulator configured to modulate a response signal, and output the modulated response signal to the antenna unit.

36. The RFID system according to claim 30, wherein the RFID device further includes:

a power-supply voltage applying pad configured to provide a power-supply voltage to the RFID device; and

a ground voltage applying pad configured to provide a ground voltage to the RFID device.

37. The RFID system according to claim 30, wherein the connection unit includes:

an output pad coupled to the external driving device through a connection pin.

38. The RFID system according to claim 30, wherein the RFID device further includes an ESD circuit.

39. A radio frequency identification (RFID) system comprising:

an RFID device configured to read and write data according to an RF signal received through an antenna unit,

wherein the RFID device includes;

a connection unit coupled to an external driving device;

a serial interface controller configured to receive code data from an external MCU processor; and

a driving unit configured to output a driving signal for controlling the external driving device to the connection unit in response to an output signal of the serial interface controller and control signals generated by the RF signal.

40. The RFID system according to claim 39, wherein the RFID device further includes:

a digital unit configured to process the code data received from the serial interface controller, and output the processed code data to the driving unit.

41. The RFID system according to claim 39, wherein the RFID device further includes:

a pad configured to transmit the code data received from the MCU processor to the serial interface controller.

42. The RFID system according to claim 41, wherein the pad includes:

a first pad configured to receive a serial clock signal;

a second pad configured to receive serial data; and

a third pad configured to receive an interrupt signal.

43. The RFID system according to claim 39, wherein the serial interface controller includes:

a serial interface port configured to receive the code data; and

a serial interface unit configured to control the serial interface port.

44. The RFID system according to claim 39, wherein the driving unit includes:

a register unit configured to store the code data received from the serial interface controller and output a driving control signal; and

a DAC driver configured to convert the driving control signal received from the register unit into an analog signal and output the analog signal as the driving signal.

45. The RFID system according to claim 44, wherein the driving unit further includes:

a power register configured to control a power source of the DAC driver in response to an operation signal generated by the RF signal and a power-on reset signal.

46. The RFID system according to claim 39, wherein the RFID device further includes:

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

a power-on reset unit configured to output a power-on reset signal by detecting a power-supply voltage;

a clock generator configured to generate a clock signal in response to the power-supply voltage;

a modulator configured to modulate a response signal, and output the modulated response signal to the antenna unit; and

a memory unit configured to store an identification (ID) code, wherein the memory unit includes a non-volatile ferroelectric memory.

47. The RFID system according to claim 39, wherein the RFID device further includes:

a power-supply voltage applying pad configured to provide a power-supply voltage to the RFID device; and

a ground voltage applying pad configured to provide a ground voltage to the RFID device.

48. The RFID system according to claim 39, wherein the RFID device further includes an ESD circuit.

49. A radio frequency identification (RFID) system comprising:

an RFID device configured to read and write data in response to a radio frequency (RF) signal received through an antenna unit,

wherein the RFID device includes;

a connection unit coupled to an external driving device;

a driving unit configured to output a driving signal for controlling the external driving device to the connection unit according to control signals generated by the RF signal; and

a fixed handle mode control unit configured to output predetermined fixed handle data in a fixed handle mode according to a command signal generated by the RF signal.

50. The RFID system according to claim 49, wherein the fixed handle mode control unit includes:

a fixed handle command decoder configured to decode the command signal;

a fixed handle controller configured to control activation of a handle operation signal in response to an output signal of the fixed handle command decoder;

a register configured to store output data of the fixed handle controller as non-volatile data and output the fixed handle data;

a random number generator configured to generate a random number; and

a selection unit configured to select one of the random number and the fixed handle data in response to the handle operation signal, and output the selected one.

51. The RFID system according to claim 49, further comprising:

a plurality of RFID devices configured to be arranged in row and column directions such that fixed handle data is differently pre-established in the RFID devices.

52. The RFID system according to claim 51, further comprising:

a radio frequency (RF) processor configured to pre-establish fixed handle data of regular values in the RFID devices using the RF signal.

53. The RFID system according to claim 49, wherein the driving unit includes:

a register unit configured to output a driving control signal in response to the control signals; and

a DAC driver configured to convert the driving control signal received from the register unit into an analog signal and output the analog signal as the driving signal.

54. The RFID system according to claim 53, wherein the driving unit further includes:

a power register configured to control a power source of the DAC driver in response to an operation signal generated by the RF signal and a power-on reset signal.

55. The RFID system according to claim 49, wherein the RFID device further includes:

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

a power-on reset unit configured to output a power-on reset signal by detecting a power-supply voltage;

a clock generator configured to generate a clock signal in response to the power-supply voltage;

a modulator configured to modulate a response signal, and output the modulated response signal to the antenna unit;

a digital unit configured to interpret a command signal generated according to the RF signal, and output the control signals to the driving unit; and

a memory unit configured to store an identification (ID) code,

wherein the memory unit includes a non-volatile ferroelectric memory.

56. The RFID system according to claim 49, wherein the RFID device further includes:

a power-supply voltage applying pad configured to provide a power-supply voltage to the RFID device; and

a ground voltage applying pad configured to provide a ground voltage to the RFID device.

57. The RFID system according to claim 49, wherein the connection unit includes:

an output pad coupled to the external driving device through a connection pin.