Long range RFID device as modem and systems implementing same

• US 8,528,825 B2
• Filed: 01/03/2007
• Issued: 09/10/2013
• Est. Priority Date: 01/03/2007
• Status: Active Grant

• Current Assignee: Zest Labs, Inc.
• Original Assignee: Intelleflex Corporation
• Inventors: Batra, Naresh
• Primary Examiner(s): Lee, Michael G
• Assistant Examiner(s): Mikels, Matthew
• Application Number:
  US11/619,579
• Publication Number:
  US 20120194322A1
• Time in Patent Office: 2,442 Days
• Field of Search: 235/451, 235/492
• US Class Current: 235/492
• 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: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Abstract

A Radio Frequency Identification (RFID) system according to one embodiment of the present invention includes an RFID device having a memory; and an electronic device in electrical communication with the RFID device via a direct physical connection; wherein data received by the RFID device from a remote device is stored in the memory of the RFID device, the data being communicated to the electronic device via the direct physical connection. An RFID system according to another embodiment of the present invention includes an RFID device having a memory; and an electronic device in electrical communication with the RFID device via a direct physical connection; wherein data initiating with the electronic device is stored in the memory of the RFID device for subsequent transmission to a remote device. Methods are also provided.

Claims

1. A Radio Frequency Identification (RFID) system, comprising:

an RFID device having a memory; and

an electronic device in electrical communication with the RFID device via a direct physical connection;

wherein data received by the RFID device from a remote device is stored in the memory of the RFID device, the data being communicated to the electronic device via the direct physical connection, wherein the electronic device is configured to store the data received via the direct physical connection in a memory thereof;

wherein the RFID device enters a hibernation state during at least some periods when the RFID device is not actively communicating with the electronic device or the remote device,

wherein the electronic device selectively wakes the RFID device from the hibernation state using an activation signal sent from the electronic device to the RFID device on the direct physical connection.

2. A system as recited in claim 1, wherein the RFID device is configured to respond to commands from the remote device, with the proviso that the electronic device does not have any RF wireless communication capability.

3. A system as recited in claim 1, wherein the RFID device is a semi-passive RFID tag, wherein the RFID tag further comprises a battery.

4. A system as recited in claim 3, wherein the RFID tag further comprises a supplemental power source.

5. A system as recited in claim 1, wherein the RFID device is a semi-passive RFID tag, wherein the RFID tag draws power from a power source of the electronic device.

6. A system as recited in claim 1, wherein the RFID device is detachably mounted to the electronic device.

7. A system as recited in claim 1, wherein at least a portion of the RFID device is physically integrated with the electronic device.

8. A system as recited in claim 7, wherein the RFID device is an RFID tag, wherein a controller of the RFID device is located on a same printed circuit board as a controller of the electronic device, wherein the controller of the electronic device and the controller of the RFID device communicate with each other via direct connections thereof to the printed circuit board, with the proviso that the electronic device does not have any RF wireless communication capability.

9. A system as recited in claim 1, wherein the electronic device is operative to check a flag in the memory of the RFID device to determine whether the RFID device has data thereon from the remote device prior to attempting to access the data.

10. A system as recited in claim 9, wherein the flag is indicated by a state of a single bit or series of bits in the memory of the RFID device.

11. A system as recited in claim 1, wherein the RFID device is capable of being selectively woken from the hibernation state by the remote device via an air interface.

12. A system as recited in claim 1, wherein data initiating with the electronic device is stored in the memory of the RFID device for subsequent transmission to the remote device.

13. A system as recited in claim 1, wherein the electronic device includes a visual display device, wherein the display device is adapted to output display data retrieved from the memory of the RFID device, the display data comprising at least one of information and graphics.

14. A system as recited in claim 1, wherein the electronic device includes a sensor, wherein the electronic device is configured to transfer the sensor data to the RFID device, wherein the RFID device is configured to store the sensor data in the memory thereof and transmit the sensor data to the remote device via an air interface.

15. A system as recited in claim 13, wherein the electronic device is configured to change the display based on a schedule retrieved from the memory of the RFID device.

16. A system as recited in claim 1, wherein the RFID device sets a flag indicating that data has been written to the RFID device memory, wherein the flag is reset when the data is sent from the RFID device memory to the electronic device via the direct physical connection.

17. A system as recited in claim 16, wherein setting the flag includes sending an electronic signal detectable by the electronic device via the direct physical connection when the data has been written to the RFID device memory by the remote device.

18. A system as recited in claim 16, wherein setting the flag includes setting the state of a single bit or series of bits in the memory of the RFID device, wherein the electronic device is configured to periodically poll the memory of the RFID device for determining whether the flag is set.

39. A system as recited in claim 1, wherein at least a portion of the RFID device is physically integrated with the electronic device, wherein a controller of the RFID device is located on a same printed circuit board as a controller of the electronic device and in electrical communication with the printed circuit board such that the printed circuit board creates the direct physical connection, wherein the RFID device sets a flag indicating that data has been written to the RFID device memory, wherein setting the flag includes setting the state of a single bit or series of bits in memory, wherein setting the flag also includes sending an electronic signal detectable by the electronic device via the direct physical connection when the data has been written to the RFID device memory by the remote device, wherein the electronic device is operative to check a flag in the memory of the RFID device to determine whether the RFID device has data thereon from the remote device prior to attempting to access the data, wherein the flag is reset when the data is sent from the RFID device memory to the electronic device via the direct physical connection, wherein the RFID device is capable of being selectively woken from the hibernation state by the remote device via an air interface, with the proviso that the electronic device does not have any RF wireless communication capability;

wherein the electronic device includes a visual display device, wherein the display device is adapted to output display data retrieved from the memory of the RFID device, the display data comprising at least one of information and graphics.

40. A system as recited in claim 1, wherein a timestamp is stored in the memory of the RFID device with the data, with the proviso that the electronic device does not have any RF wireless communication capability.

43. A system as recited in claim 39, wherein a timestamp is stored in the memory of the RFID device with the data, with the proviso that the electronic device does not have any RF wireless communication capability, wherein the electronic device includes a sensor for sensing at least one of temperature, humidity, Ph, sunlight, ultraviolet light, chemicals, radioactivity, pathogens, bacteria, viruses, prions, and carbon dioxide level, wherein the electronic device is configured to change the display based on a schedule retrieved from the memory of the RFID device.

19. A Radio Frequency Identification (RFID) system, comprising:

an RFID device having a memory; and

an electronic device in electrical communication with the RFID device via a direct physical connection;

wherein data initiating with the electronic device is stored in the memory of the RFID device for subsequent transmission to a remote device,

wherein a flag is set in a memory of the RFID device indicating that data has been written to the RFID device memory,

wherein the flag is indicated by a state of a single bit or series of bits in the memory of the RFID device, the flag being readable by the remote device,

wherein the RFID device is configured to enter a hibernation state during at least some periods when the RFID device is not actively communicating with the electronic device or the remote device, wherein the RFID device is configured to wake from the hibernate state upon receiving a wake-up code from the remote device and send a status of the flag to the remote device upon waking.

41. A system as recited in claim 19, wherein a timestamp is stored in the memory of the RFID device with the data, wherein the RFID device is a semi-passive RFID tag, wherein the electronic device wakes the RFID device from the hibernation state prior to receiving data from the electronic device.

20. A Radio Frequency Identification (RFID)-based sensor system, comprising:

an RFID device having a memory; and

an electronic sensor device in electrical communication with the RFID device via a direct physical connection;

wherein sensor readings from the electronic sensor device are stored in the memory of the RFID device for subsequent transmission to a remote device,

wherein the RFID device enters a hibernation state during at least some periods when the RFID device is not actively communicating with the electronic sensor device or the remote device.

21. A system as recited in claim 20, wherein the RFID device is detachably mounted to the electronic sensor device.

22. A system as recited in claim 20, wherein the RFID device further comprises a controller, wherein the controller of the electronic device and the controller of the RFID device communicate with each other via a common printed circuit board to which the controllers are electrically coupled.

23. A system as recited in claim 20, wherein the sensor readings are of environmental conditions selected from a group consisting of temperature, humidity, Ph, sunlight, ultraviolet light, chemicals, radioactivity, pathogens, bacteria, viruses, prions, carbon dioxide level.

24. A system as recited in claim 20, wherein the electronic sensor device selectively wakes the RFID device from the hibernation state using an activation signal sent from the electronic sensor device to the RFID device on the direct physical connection.

25. A system as recited in claim 20, wherein the RFID device is capable of being selectively woken from the hibernation state by the remote device via an air interface, wherein the remote device is operative to check a flag in the memory of the RFID device to determine whether the RFID device has data thereon from the electronic sensor device prior to attempting to access the data.

26. A system as recited in claim 20, wherein data received by the RFID device from the remote device is stored in the memory of the RFID device, the data being communicated to the electronic sensor device via the direct physical connection.

38. A system as recited in claim 20, with the proviso that the electronic sensor device does not have any RF wireless communication capability, wherein the electronic sensor device enters a hibernation state during interval periods between sensor readings.

42. A system as recited in claim 20, wherein a timestamp is stored in the memory of the RFID device with the sensor readings.

27. A Radio Frequency Identification (RFID) device, comprising:

a memory for storing data received from a remote device via an air interface;

an interface for providing a direct physical connection to an electronic device, the data stored in the memory being communicated to the electronic device via the interface; and

circuitry for causing the RFID device to enter a hibernation state during at least some periods when the RFID device is not actively communicating with the electronic device or the remote device,

wherein the circuitry is configured to selectively wake the RFID device from the hibernation state upon detecting an activation signal sent from the electronic device to the RFID device via the interface.

28. A Radio Frequency Identification (RFID) device, comprising:

an interface for providing a direct physical connection to an electronic device;

a memory for storing data received from the electronic device via the interface;

circuitry for sending the data stored in the memory to a remote device via an air interface;

circuitry for causing the RFID device to enter a hibernation state during at least some periods when the RFID device is not actively communicating with the electronic device or the remote device,

wherein the circuitry selectively wakes the RFID device from the hibernation state upon detecting an activation signal sent from the electronic device to the RFID device via the interface,

wherein a flag is set on the RFID device indicating that data has been written to the RFID device memory,

wherein the RFID device sends data corresponding to the flag to the remote device upon receiving a query therefrom.

29. A method, comprising:

receiving data from a remote device via an air interface using a Radio Frequency Identification protocol;

storing the data in local memory;

sending a signal to an electronic device via a direct physical connection indicating that data is stored in the local memory, the signal being an internal signal used when storing the data to the local memory; and

sending the data via the direct physical connection to the electronic device.

30. A method as recited in claim 29, further comprising setting a flag indicating that data has been written to the local memory.

31. A method as recited in claim 29, further comprising entering a hibernation state during at least some periods when not actively communicating with the electronic device or the remote device.

32. A method as recited in claim 29, further comprising receiving data from the electronic device via the direct physical connection, and uploading the data from the electronic device to the remote device, wherein the remote device is an RFID reader.

33. A method, comprising:

receiving data from an electronic device via a direct physical connection;

storing the data in local memory;

receiving a query from a remote device via an air interface for a status of a flag indicating that the data has been written to the local memory;

in response to the query, sending the status of the flag to the remote device; and

sending the data to the remote device via the air interface using a Radio Frequency Identification protocol.

34. A method as recited in claim 33, further comprising activating circuitry upon receiving an activation signal from the electronic device and prior to receiving the data from the electronic device.

35. A method as recited in claim 33, further comprising activating circuitry upon receiving an activate command from the remote device and prior to sending the data to the remote device.

36. A method as recited in claim 33, further comprising setting a flag indicating that data has been written to the local memory.

37. A method as recited in claim 33, with the proviso that the electronic device does not have any RF wireless communication capability.