SYSTEM, METHOD, AND DEVICE FOR RADIO FREQUENCY COMMUNICATION

• US 20110151900A1
• Filed: 11/18/2010
• Published: 06/23/2011
• Est. Priority Date: 10/30/2007
• Status: Active Grant

• Current Assignee: Nationz Technologies Inc.
• Original Assignee: Nationz Technologies Inc.
• Inventors: Lu, Yan, Hao, Zhiqin, Zhu, Shan, Liang, Jianhua, Li, Xikui, YU, Yunbo
• Granted Patent: US 8,929,805 B2
• Time in Patent Office: Days
• US Class Current: 455/466
• CPC Class Codes: G06K 19/077 Constructional details, e.g. mounting of circuits in the carrier
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07769 the further communication means being a galvanic interface, e.g. hybrid or mixed smart cards having a contact and a non-contact interface
• CPC Class Codes: G06K 19/07786 the antenna being of the HF type, such as a dipole

Abstract

A radio frequency communication system, method, and device operate in the VHF, UHF, or SHF range, where a controller controls the radio-frequency communication range provided by the VHF, UHF, or SHF radiation.

Claims

1. A radio frequency (RF) device configured to be disposed in a terminal, the RF device comprising:

an RF antenna configured to exchange data with an RF reader; and

a controller configured to control a communication range between the RF device and the RF reader,

wherein said RF is in very high frequency (VHF), ultra high frequency (UHF), or super high frequency (SHF) range.

2. The RF device of claim 1, wherein said controller is configured to control the communication range by selecting RF parameters based on identification information of said terminal.

3. The RF device of claim 2, wherein said identification information comprises an International Mobile Equipment Identification Number (IMEI).

4. The RF device of claim 2, wherein said RF parameters include an RF transmission power.

5. The RF device of claim 1, wherein said terminal comprises a cell phone, a PDA, or a computer.

6. The RF device of claim 1, wherein said RF device comprises a SIM card.

7. A terminal comprising:

a radio frequency (RF) device comprising an RF antenna configured to exchange data with an RF reader; and

a controller configured to control a communication range between the RF device and the RF reader,

wherein said RF is in very high frequency (VHF), ultra high frequency (UHF), or super high frequency (SHF) range.

8. The terminal of claim 7, wherein said controller is configured to control the communication range by selecting RF parameters based on identification information of said terminal.

9. The terminal of claim 8, wherein said identification information comprises an International Mobile Equipment Identification Number (IMEI).

10. The terminal of claim 8, wherein said RF parameters comprises an RF transmission power.

11. The terminal of claim 8, wherein the terminal is configured send said identification information through a short message.

12. The terminal of claim 11, wherein the terminal is configured to send the identification information to a network server.

13. The terminal of claim 12, wherein the terminal is further configured to receive RF transmission parameters from the network server.

14. The terminal of claim 13, wherein the terminal is further configured to prompt a user to calibrate the terminal if the RF transmission parameters are not received.

15. The terminal of claim 7, wherein the terminal comprises a cellular phone, and wherein the RF device comprises a SIM card and is configured to be disposed in a SIM slot of the cellular phone.

16. The terminal of claim 7, wherein the controller is configured to reduce a communication range afforded by the VHF, UHF, or SHF.

17. A controller configured to control a communication range between a radio frequency (RF) device and an RF reader, wherein

the RF device comprises an RF antenna configured to exchange data with the RF reader, said RF being in very high frequency (VHF), ultra high frequency (UHF), or super high frequency (SHF) range, and

the controller is configured to measure a distribution of a signal field intensity from a terminal having the RF device disposed therein to determine whether the terminal and the RF reader are within a predetermined communication range.

18. The controller of claim 17, wherein the controller comprises a detector array to measure said distribution.

19. The controller of claim 18, which the detector array comprises a plurality of detectors substantially evenly distributed in a circular geometry.

20. The controller of claim 17, wherein the controller is part of the RF reader.

21. The controller of claim 18, wherein the detector array comprises a plurality of detectors having adjustable gains.

22. The controller of claim 21, wherein the gains are adjustable by adjusting positions of the plurality of detectors.

23. The controller of claim 21, wherein the detector array further comprises a plurality of amplifiers and attenuators, and wherein the gains are adjustable by adjusting parameters of the plurality of amplifiers and attenuators.

24. A method to control a radio frequency (RF) communication range between a mobile terminal and an RF reader, wherein the mobile terminal has an RF device disposed therein, said RF device comprising an RF antenna configured to exchange data with the RF reader, wherein said RF is in very high frequency (VHF), ultra high frequency (UHF), or super high frequency (SHF) range,

the method comprising controlling the RF communication range from a range provided by said VHR, UHF, or SHF radiation.

25. The method of claim 24, further comprising:

measuring a signal field intensity distribution of the mobile terminal with a detector array;

comparing the measured distribution with stored near-field maps for different types of mobile terminals; and

determining whether the mobile terminal and the RF reader are within a predetermined communication range based on said comparing.

26. The method of claim 24, wherein said controlling the RF communication range comprises measuring a signal field intensity distribution of the mobile terminal with a detector array, wherein the detector array comprises a plurality of detectors having adjustable gains.

27. The method of claim 26, wherein said controlling the RF communication range comprises adjusting the gains by adjusting positions of the plurality of detectors.

28. The method of claim 26, wherein the detector array further comprises a plurality of amplifiers and attenuators, and wherein said controlling the RF communication range comprises adjusting parameters of the plurality of amplifiers and attenuators.

29. The method of claim 24, wherein said controlling the RF communication range comprises selecting RF parameters based on identification information of said mobile terminal.

30. The method of claim 29, wherein said identification information comprises an International Mobile Equipment Identification Number (IMEI).

31. The method of claim 29, wherein said RF parameters comprises an RF transmission power.

32. The method of claim 29, further comprising sending from the mobile terminal said identification information through a short message.

33. The method of claim 32, further comprising receiving said identification information by a network server.

34. The method of claim 33, further comprising receiving at the terminal RF transmission parameters from the network server.

35. The method of claim 34, further comprising prompting a user to calibrate the mobile terminal if the RF transmission parameters are not received.

36. The method of claim 24, wherein said controlling comprises reducing.

37. A system comprising:

a mobile terminal having a radio frequency (RF) device disposed therein, the RF device comprising an RF antenna configured to exchange data with an RF reader, wherein said RF is in very high frequency (VHF), ultra high frequency (UHF), or super high frequency (SHF) range;

an RF reader; and

a controller configured to control a communication range between the RF device and the RF reader.

38. The system of claim 37, further comprising a read-write converting device configured to provide an interface to a host computer, wherein said interface does not distinguish the VHF, UHF, or SHF range with a low-frequency, 13.56 MHz range.

39. The system of claim 37, wherein the mobile terminal comprises an integrated interface including a combined menu for the RF device and a conventional SIM too kit (STK) menu.

40. The system of claim 37, further comprising:

a short-range point-of-service (POS) machine;

a long-range POS machine;

an authorization server,

wherein the short-range POS machine and the long-range POS machine operate in the same VHF, UHF, or SHF range.

41. The system of claim 37, wherein the RF reader is configured, as an access control device, to promulgate information to the mobile terminal through the RF device.

42. The system of claim 37, wherein said controller is part of the RF reader.

43. The system of claim 37, wherein said controller is part of the terminal.

44. The system of claim 37, wherein said controller is part of the RF device.