RADIO FREQUENCY IDENTIFICATION ON MOBILE COMPUTING DEVICE

• US 20140200051A1
• Filed: 01/10/2014
• Published: 07/17/2014
• Est. Priority Date: 01/11/2013
• Status: Abandoned Application

• Current Assignee: NVIDIA Corporation
• Original Assignee: NVIDIA Corporation
• Inventors: LIU, Jingying (Moon)
• Application Number:
  US14/152,952
• Publication Number:
  US 20140200051A1
• Time in Patent Office: Days
• US Class Current: 455/566
• 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: G06K 7/10009 sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves

Abstract

Method and system for providing radio frequency by using a mobile computing device. A mobile phone comprises a tag antenna and a motherboard integrated with a radio frequency front end module, a processor and a memory. The tag antenna can receive a request carrier signal and transmit an answering carrier signal. The radio frequency front end module can demodulate the request carrier signal to generate a request baseband signal and transfer to the processor, and modulate an answering baseband signal from the processor to generate the answering carrier signal. The processor can decode the request baseband signal to generate request data, and encode answering data to generate the answering baseband signal and transfer the answering baseband signal to the radio frequency front end module. The answering data include the tag data or response data for representing a result of the write operation.

Claims

1. A mobile computing device operable for radio frequency identification, the mobile computing device comprising:

a processor;

a memory coupled to the processor;

a tag antenna; and

a radio frequency front end module disposed on an integrated circuit board and coupled to the processor and the tag antenna,

wherein the tag antenna is operable to receive a request carrier signal from a radio frequency identification reader and transfer the request carrier signal to the radio frequency front end module.

2. The mobile computing device of claim 1,

wherein the tag antenna is further operable to receive an answering carrier signal from the radio frequency front end module and transmit the answering carrier signal to the radio frequency identification reader,

wherein the radio frequency front end module is operable to:

demodulate the request carrier signal to generate a request baseband signal and transfer the request baseband signal to the processor; and

modulate an answering baseband signal from the processor to generate the answering carrier signal and transfer the answering carrier signal to the tag antenna;

wherein the processor is configured to;

decode the request baseband signal to generate request data and perform a read operation or a write operation on the memory based on an instruction included in the request data; and

encode answering data corresponding to the read operation or the write operation to generate the answering baseband signal and transfer the answering baseband signal to the radio frequency front end module;

wherein the memory is operable to store tag data; and

wherein the answering data include at least a part of the tag data or response data for representing a result of the write operation.

3. The mobile computing device of claim 2 further comprising a display screen, a speaker, and a phone circuit, wherein the processor is a central processing unit of the mobile computing device, wherein the central processing unit is configured to monitor information related to radio frequency identification and issue a presenting instruction for presenting the information to the display screen and/or the speaker of the mobile phone.

4. The mobile computing device of claim 3, wherein the information includes at least a part of the tag data.

5. The mobile computing device of claim 3, wherein the information comprises an indication from the radio frequency identification reader, the indication representing that an operation with respect to the radio frequency identification has been completed.

6. The mobile computing device of claim 1 further comprising a central processing unit, wherein the processor is a microprocessor additional to the central processing unit of the mobile computing device, and wherein the mobile computing device is a mobile phone.

7. The mobile computing device of claim 6, wherein

the microprocessor is further configured to monitor information related to the radio frequency identification and send the information to the central processing unit of the mobile phone;

and

the central processing unit is configured to receive the information and issue a presenting instruction for presenting the information to a display screen and/or a speaker of the mobile phone.

8. The mobile device of claim 7, wherein the information comprises at least a part of the tag data.

9. The mobile device of claim 7, wherein the information comprises s an indication from the radio frequency identification reader which represents completion of an operation corresponding to the radio frequency identification.

10. The mobile computing device of claim 1, wherein the tag antenna is an antenna enclosed in a housing of the mobile computing device.

11. The mobile device of claim 1, wherein the memory is an inherent memory of the mobile computing device.

12. The mobile device of claim 1 further comprising a battery, and wherein the radio frequency front end module, the processor and the memory are powered by the battery.

13. The mobile device of claim 1, wherein the radio frequency front end module further comprises a power generation circuit configured to transform the request carrier signal from the tag antenna to a power signal, and the radio frequency front end module, wherein the processor and the memory are powered by the power generation circuit.

14. The mobile device of claim 1, wherein the tag antenna is disposed at one end of the mobile computing device.

15. A method for radio frequency identification including:

receiving a request carrier signal from a radio frequency identification reader;

transferring the request carrier signal to a radio frequency front end module integrated on a mobile computing device integrated circuit board within a mobile computing device by a tag antenna integrated with the mobile computing device, wherein the mobile computing device comprises a phone circuit;

demodulating the request carrier signal to generate a request baseband signal and transferring the request baseband signal to a processor integrated on the integrated circuit board by the radio frequency front end module;

decoding the request baseband signal to generate request data;

performing a read operation or a write operation on a memory integrated on the integrated circuit board based on an instruction included in the request data;

encoding answering data corresponding to the read operation or the write operation to generate an answering baseband signal and transferring the answering baseband signal to the radio frequency front end module;

modulating the answering baseband signal to generate an answering carrier signal and transferring the answering carrier signal to the tag antenna by the radio frequency front end module; and

receiving the answering carrier signal and transmitting the answering carrier signal to the radio frequency identification reader by the tag antenna;

wherein the memory is operable to store tag data, and the answering data comprise at least a part of the tag data or response data that represent a result of the write operation.

16. The method of claim 15, wherein the processor is a central processing unit of the mobile computing device, the method further includes:

monitoring information related to the radio frequency identification;

issuing a presenting instruction for presenting the information to a screen and/or a speaker of the mobile computing device by the central processing unit; and

presenting the information based on the presenting instruction by the screen and/or the speaker.

17. The method of claim 15, wherein the processor is a microprocessor additional to a central processing unit of the mobile computing device, the method further includes:

monitoring information related to the radio frequency identification and sending the information to the central processing unit of the mobile computing device by the microprocessor;

receiving the information and issuing a presenting instruction for presenting the information to a screen and/or a speaker of the mobile computing device by the central processing unit; and

presenting the information based on the presenting instruction by the screen and/or the speaker.

18. A system for radio frequency identification comprising a radio frequency identification reader and a mobile computing device which comprises a tag antenna and a mobile computing device integrated circuit board integrated with a radio frequency front end module, a processor and a memory,

wherein the radio frequency identification reader is operable to transmit a request carrier signal to the mobile computing device and receive an answering carrier signal from the mobile computing device;

wherein the tag antenna is coupled to the radio frequency front end module, and is operable to receive the request carrier signal and transfer the request carrier signal to the radio frequency front end module, and receive the answering carrier signal from the radio frequency front end module and transmit the answering carrier signal to the radio frequency identification reader;

wherein the radio frequency front end module is coupled to the processor, and is operable to demodulate the request carrier signal to generate a request baseband signal and transfer the request baseband signal to the processor, and modulate an answering baseband signal from the processor to generate the answering carrier signal and transfer the answering carrier signal to the tag antenna;

wherein the processor is coupled to the memory, and is configured to decode the request baseband signal to generate request data and perform a read operation or a write operation on the memory based on an instruction included in the request data, and encode answering data corresponding to the read operation or the write operation to generate the answering baseband signal and transfer the answering baseband signal to the radio frequency front end module;

wherein the memory is operable to store tag data; and

wherein the answering data include at least a part of the tag data or response data for representing a result of the write operation.

19. The system of claim 18, wherein the processor is a central processing unit of the mobile computing device, wherein the central processing unit is further configured to monitor information related to the radio frequency identification and issue a presenting instruction for presenting the information to a screen and/or a speaker of the mobile computing device.

20. The system of claim 18, wherein the processor is an additional microprocessor,

wherein the microprocessor is further configured to monitor information related to the radio frequency identification and send the information to a central processing unit of the mobile computing device;

and

wherein the central processing unit is configured to receive the information and issue a presenting instruction for presenting the information to a screen and/or a speaker of the mobile computing device.