ELECTRONIC DEVICES AND METHODS THAT COMMUNICATE VIA TRANSFERJET AND NFC TRANSMITTER AND RECEIVER PAIRING

• US 20100068996A1
• Filed: 09/15/2008
• Published: 03/18/2010
• Est. Priority Date: 09/15/2008
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Ericsson Mobile Communications USA Incorporated (Sony Group Corp.)
• Inventors: Haartsen, Jacobus Cornelis
• Granted Patent: US 8,126,433 B2
• Time in Patent Office: Days
• US Class Current: 455/41.100
• CPC Class Codes: H04B 5/48 Transceivers
• CPC Class Codes: H04B 5/70 specially adapted for specific purposes
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

An electronic communication device includes a high-rate RF wireless transmitter circuit (e.g., a TransferJet transmitter circuit) and a low-rate magnetically coupled receiver circuit (e.g., a Near Field Communication receiver circuit). The high-rate RF wireless transmitter circuit transmits a block of data to another proximately located communication device via RF signals using a first RF communication protocol. The low-rate magnetically coupled receiver circuit receives a communication control signal from the other proximately located communication device via magnetic coupling thereto using a second protocol that is different from the first RF communication protocol, and responds to the communication control signal by selectively triggering the high-rate RF wireless transmitter circuit to transmit another block of data when available for transmission.

Claims

1. An electronic communication device comprising:

a high-rate RF wireless transmitter circuit that is configured to transmit a block of data to another proximately located communication device via RF signals using a first RF communication protocol; and

a low-rate magnetically coupled receiver circuit that is configured to receive a communication control signal from the other proximately located communication device via magnetic coupling thereto using a second protocol that is different from the first RF communication protocol, and is configured to respond to the communication control signal by selectively triggering the high-rate RF wireless transmitter circuit to transmit another block of data when available for transmission.

2. The electronic communication device of claim 1, wherein:

the high-rate RF wireless transmitter circuit comprises a TransferJet transmitter circuit; and

the low-rate magnetically coupled receiver circuit comprises a Near Field Communication (NFC) receiver circuit.

3. The electronic communication device of claim 2, wherein the NFC receiver circuit is the only circuit in the electronic communication device that is capable of receiving communication signals through magnetic coupling from the other proximately located communication device, and the TransferJet transmitter circuit is the only circuit in the electronic communication device that is capable of transmitting RF communication signals directly to the other proximately located communication device.

4. The electronic communication device of claim 1, further comprising:

an inductive charging circuit that is configured to convert magnetic signals received from the other proximately located communication device into power, and to supply the power to the high-rate RF wireless transmitter circuit.

5. The electronic communication device of claim 4, wherein the high-rate RF wireless transmitter circuit consumes power at a greater rate when transmitting than what can be generated by the charging circuit from the magnetic signals.

6. The electronic communication device of claim 5, wherein the high-rate RF wireless transmitter circuit is further configured to transmit data blocks in RF bursts, wherein a number of data bits in each block varies in response to how much power is supplied by the charging circuit before falling below a threshold level needed to operate the high-rate RF wireless transmitter circuit.

7. The electronic communication device of claim 5, wherein the high-rate RF wireless transmitter circuit is further configured to transmit data blocks in RF bursts, and is configured to increase a time delay between transmission bursts in response to the communication control signal, which is received via magnetic coupling through the low-rate magnetically coupled receiver circuit, indicating that the previously transmitted block of data was not properly received by the other proximately located communication device in order to cause the charging circuit to accumulate power over a longer time between burst transmissions.

8. The electronic communication device of claim 5, wherein the high-rate RF wireless transmitter circuit is further configured to transmit data blocks in RF bursts, and is configured to decrease a transfer rate of data bits in an upcoming transmission RF burst in response to the communication control signal, which is received via the low-rate magnetically coupled receiver circuit, indicating that the previously transmitted block of data was not properly received by the other proximately located communication device.

9. The electronic communication device of claim 1, wherein:

the high-rate RF wireless transmitter circuit is further configured to retransmit at least a portion of a previously transmitted block of data in response to the communication control signal, which is received via the low-rate magnetically coupled receiver circuit, indicating that the previously transmitted block of data was not properly received by the other proximately located communication device; and

the high-rate RF wireless transmitter circuit is further configured to transmit a next block of data in response to the communication control signal indicating that the previously transmitted block of data was properly received by the other proximately located communication device.

10. An electronic communication device comprising:

a high-rate RF wireless receiver circuit that is configured to receive a block of data from another proximately located communication device via RF signals using a first RF communication protocol;

a communication controller that is configured to verify the received data block and to generate a control signal that indicates the outcome of the verification; and

a low-rate magnetically coupled transmitter circuit that is configured to transmit the communication control signal to the other proximately located communication device via magnetic coupling thereto using a second communication protocol that is different from the first RF communication protocol.

11. The electronic communication device of claim 10, wherein:

the high-rate RF wireless receiver circuit comprises a TransferJet receiver circuit; and

the low-rate magnetically coupled transmitter circuit comprises a Near Field Communication (NFC) transmitter circuit.

12. The electronic communication device of claim 11, wherein the NFC transmitter circuit is the only circuit in the electronic communication device that is capable of transmitting communication signals through magnetic coupling to the other proximately located communication device, and the TransferJet receiver circuit is the only circuit in the electronic communication device that is capable of receiving RF communication signals directly from the other proximately located communication device.

13. The electronic communication device of claim 10, wherein:

the communication controller is further configured to control length of a delay time between receipt of the data block and transmission of the corresponding communication control signal to the other proximately located communication device in response to the outcome of the verification.

14. The electronic communication device of claim 13, wherein:

the communication controller is further configured to respond to a failed verification outcome by increasing the delay time to delay an upcoming transmission of a data block from the other proximately located communication device to allow an inductive charging circuit in the other proximately located communication device to accumulate more stored power from magnetic signals from the low-rate magnetically coupled transmitter circuit.

15. The electronic communication device of claim 13, wherein:

the communication controller is further configured to determine a number of bit errors in the received data block and to control the delay time in response to the number of bit errors.

16. The electronic communication device of claim 10, wherein:

the communication controller is further configured to respond to the outcome of the verification by transmitting via the low-rate magnetically coupled transmitter circuit a command that regulates a transfer rate of data bits in an upcoming transmission of a data block from the other proximately located communication device.

17. The electronic communication device of claim 16, wherein:

the communication controller is further configured to determine a number of bit errors in the received data block, and transmit the command via the low-rate magnetically coupled transmitter circuit to regulate the transfer rate of data bits in the upcoming data block transmission from the other proximately located communication device in response to the determined number of bit errors.

18. The electronic communication device of claim 10, wherein:

the communication controller is further configured to determine a signal power level of the data block received by the high-rate RF wireless receiver circuit, and to transmit via the low-rate magnetically coupled transmitter circuit a command that regulates a transfer rate of data bits in an upcoming data block transmission from the other proximately located communication device in response to the signal power level.

19. The electronic communication device of claim 10, wherein:

the communication controller is further configured to determine a signal power level of the data block received by the high-rate RF wireless receiver circuit, and to control length of a delay time between receipt of the data block and transmission of the corresponding communication control signal to the other proximately located communication device in response to the outcome of the determined signal power level to thereby control an amount of power that is stored between transmissions by an inductive charging circuit in the other proximately located communication device from magnetic signals that are transmitted by the low-rate magnetically coupled transmitter circuit.

20. A method comprising:

transmitting a block of data from a first electronic communication device to a proximately located second electronic communication device through a high-rate RF wireless communication link;

transmitting a communication control signal, which indicates an outcome of verification by the second communication device of the received data block, from the second communication device to the first communication device through a low-rate magnetically coupled communication link; and

triggering transmission of another block of data, when available for transmission, from the first communication device to the second communication device in response to the communication control signal.