Wireless power system with selectable control channel protocols

• US 8,410,637 B2
• Filed: 05/01/2010
• Issued: 04/02/2013
• Est. Priority Date: 11/30/2009
• Status: Active Grant

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Karaoguz, Jeyhan, Walley, John, Rofougaran, Ahmadreza (Reza), Seshadri, Nambirajan, Van Der Lee, Reinier
• Primary Examiner(s): DeBeradinis, Robert L.
• Application Number:
  US12/772,203
• Publication Number:
  US 20110127843A1
• Time in Patent Office: 1,067 Days
• Field of Search: 307/104
• US Class Current: 307/104
• CPC Class Codes: G06K 19/0701 at least one of the integrated circuit chips comprising an arrangement for power management
• CPC Class Codes: G06K 19/0715 the arrangement including means to regulate power transfer to the integrated circuit
• 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 7/10207 parameter settings related to power consumption of the interrogator
• CPC Class Codes: G06K 7/10346 the antenna being of the far field type, e.g. HF types or dipoles
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols

Abstract

A wireless power system includes a wireless power transmit and receive units. The wireless power transmit unit includes a wireless power transmit circuit that generates a wireless power magnetic field and a transmit unit transceiver that transceives a communication regarding the wireless power magnetic field in accordance with a control channel protocol. The wireless power receive unit includes a wireless power receive circuit, a transceiver, and a processing module. The wireless power receive circuit converts the wireless power magnetic field into a voltage. The receive unit processing module is operable to: identify the control channel protocol; determine whether the receive unit transceiver is capable of communication using the control channel protocol; and, when the receive unit transceiver is capable of communication using the control channel protocol, coordinate configuration of the receive unit transceiver to transceive the communication regarding the wireless power magnetic field via the control channel.

Claims

1. A wireless power system comprises:

a wireless power transmit unit that includes;

a wireless power transmit circuit, when operable, generates a wireless power magnetic field; and

a transmit unit transceiver operable to transceive a communication regarding the wireless power magnetic field via a control channel in accordance with a control channel protocol; and

a wireless power receive unit that includes;

a wireless power receive circuit, when operable, converts the wireless power magnetic field into a voltage;

a receive unit transceiver; and

a receive unit processing module operable to;

identify the control channel protocol;

determine whether the receive unit transceiver is capable of communication using the control channel protocol; and

when the receive unit transceiver is capable of communication using the control channel protocol, coordinate configuration of the receive unit transceiver to transceive the communication regarding the wireless power magnetic field via the control channel; and

when the receive unit transceiver is not capable of communication using the control channel protocol, attempt to update the receive unit transceiver to support the control channel protocol.

2. The wireless power system of claim 1, wherein the receive unit processing module identifies the control channel protocol by at least one of:

interpret a beacon signal to determine the control channel protocol, wherein the beacon signal is transmitted by the transmit unit transceiver;

receive a set-up communication from the transmit unit transceiver using a default control channel protocol to obtain the control channel protocol;

scan a frequency spectrum for control channel activity to produce scanned frequency spectrum and identify the control channel protocol from the scanned frequency spectrum; and

evoke a trial and error system using known control channel protocols.

3. The wireless power system of claim 1 further comprises:

the control channel including one of a plurality of control channel protocols that includes at least one of a plurality of standard control channel protocols and one or more proprietary control channel protocols;

the transmit unit transceiver uses one of the plurality of control channel protocols as the control channel protocol; and

the transmit unit transceiver is capable of using a subset of the plurality of control channel protocols.

4. The wireless power system of claim 1 further comprises:

the transmit unit transceiver being further operable to transmit an indication of the control channel protocol, wherein the transmitting the indication includes at least one of;

transmitting a beacon signal that includes information regarding the control channel protocol; and

transceiving negotiation information with the receive unit transceiver to mutually select the control channel protocol;

the receive unit transceiver being further operable to;

receive the beacon signal;

or

transceive the negotiation information.

5. The wireless power system of claim 1, wherein the receive unit processing module further functions to when the receive unit transceiver is not capable of communication using the control channel protocol, attempt to update the receive unit transceiver to support the control channel protocol by:

determining whether the receive unit transceiver is lacking hardware or lacking software to support the control channel protocol; and

when the receive unit transceiver is lacking software, generate a network message to download the software to support the control channel protocol.

6. The wireless power system of claim 1, wherein the receive unit transceiver comprises at least one of:

a radio frequency (RF) transceiver;

a millimeter wave (MMW) transceiver;

a radio frequency identification (RFID) tag and reader;

a near field communication (NFC) transceiver.

7. The wireless power system of claim 1 further comprises:

the wireless power transmit unit further including at least one of a radio frequency identification (RFID) tag and an RFID reader; and

the wireless power receive unit further including at least one complimentary unit to the at least one of the RFID tag and the RFID reader, wherein the RFID tag stores wireless power requirements and corresponding wireless power unit capabilities.

8. The wireless power system of claim 1 further comprises:

a plurality of wireless power receive units that includes the wireless power receive unit; and

the wireless power transmit unit including a transmit unit processing module operable to;

determine a number of transmit unit coils;

determine a number of proximal wireless power receive units of the plurality of wireless power receive units;

determine whether the number of transmit unit coils is equal to or greater than the number of proximal wireless power receive units;

when the number of transmit unit coils is equal to or greater than the number of proximal wireless power receive units, determine pairings of a transmit unit coil of the transmit unit coils to a wireless power receive unit of the proximal wireless power receive units; and

determine, for each of the pairings, at least one of frequency allocation and power allocation.

9. The wireless power system of claim 8, wherein the transmit unit processing module is further operable to:

when the number of transmit unit coils is less than the number of proximal wireless power receive units, determine an affiliation of one of the transmit unit coils and at least two of the proximal wireless power receive units; and

determine sharing parameters of the one of the transmit unit coils by the at least two of the proximal wireless power receive units.

10. The wireless power system of claim 1, wherein the wireless power transmit unit further comprises:

a network transceiver operable to provide a connection to a network; and

a transmit unit processing module operable to;

determine whether the wireless power receive unit is in need of the connection to the network; and

when the wireless power receive unit is in need of the connection to the network, enable the wireless power transmit unit to function as a router for the wireless power receive unit, wherein the control channel is used to convey a network communication between the wireless power transmit unit and the wireless power receive unit.

11. A wireless power receive unit comprises:

a wireless power receive circuit, when operable, converts a wireless power magnetic field from a wireless power transmit unit into a voltage;

a receive unit transceiver; and

a receive unit processing module operable to;

attempt to identify a first control channel protocol for communication on a control channel between the wireless power transmit unit and the wireless power receive unit;

determine whether the receive unit transceiver is capable of communication using the first control channel protocol;

when the receive unit transceiver is capable of communication using the first control channel protocol, coordinate configuration of the receive unit transceiver to transceive a communication regarding the wireless power magnetic field via the control channel using the first control channel protocol; and

when the receive unit transceiver is not capable of communication using the first control channel protocol, attempting to use a second control channel protocol for communication on the control channel between the wireless power transmit unit and the wireless power receive unit.

12. The wireless power receive unit of claim 11, wherein the receive unit processing module attempts to identify the first control channel protocol by at least one of:

interpret a beacon signal to determine the control channel protocol, wherein the beacon signal is transmitted by the transmit unit transceiver;

receive a set-up communication from the transmit unit transceiver using a default control channel protocol to obtain the control channel protocol;

scan a frequency spectrum for control channel activity to produce scanned frequency spectrum and identify the control channel protocol from the scanned frequency spectrum; and

evoke a trial and error system using known control channel protocols.

13. The wireless power receive unit of claim 11 further comprises:

the first control channel protocol including at least one of a plurality of standard control channel protocols and the second control channel protocol including at least one of a plurality of proprietary control channel protocols.

14. The wireless power receive unit of claim 11 further comprises:

the receive unit transceiver being further operable to receive an indication of the first control channel protocol, wherein the receiving the indication includes at least one of;

receiving a beacon signal that includes information regarding the first control channel protocol; and

receiving negotiation information with an identity of the first control channel protocol.

15. The wireless power receive unit of claim 11, wherein the receive unit transceiver comprises at least one of:

a radio frequency (RF) transceiver;

a millimeter wave (MMW) transceiver;

a radio frequency identification (RFID) tag and reader;

a near field communication (NFC) transceiver.

16. The wireless power receive unit of claim 11 further comprises:

at least one of a radio frequency identification (RFID) tag and an RFID reader, wherein the RFID tag stores wireless power requirements and wireless power receive unit capabilities.

17. The wireless power receive unit of claim 11, wherein the receive unit processing module further functions to:

enable the receive unit transceiver to transceive a network communication with the wireless power receive unit, which is functioning as a router for the wireless power receive unit.

18. A wireless power transmit unit comprises:

a wireless power transmit circuit, when operable, generates a wireless power magnetic field;

a transmit unit transceiver operable to transceive a communication regarding the wireless power magnetic field via a control channel in accordance with a plurality of control channel protocols; and

a transmit unit processing module operable to;

generate an indication of a first one of the plurality of control channel protocols, wherein the transmit unit transceiver transmits the indication of the first one of the plurality of control channel protocols; and

when requested by a wireless power receive unit, transceiving negotiation information with the wireless power receive unit to mutually select a second one of the plurality of control channel protocols for the communication regarding the wireless power magnetic field via the control channel between the wireless power receive unit and the wireless power transmit unit.

19. The wireless power transmit unit of claim 18, wherein the transmit unit transceiver transmitting the indication of the first one of the plurality of control channel protocols further comprises:

transmitting a beacon signal that includes information regarding the control channel protocol.

20. The wireless power transmit unit of claim 18 further comprises:

the first one of the plurality of control channel protocols including at least one of;

a standard control channel protocol and a proprietary control channel protocol; and

wherein the second one of the plurality of control channel protocols includes at least another one of;

a standard control channel protocol and a proprietary control channel protocol.

21. The wireless power transmit unit of claim 18, wherein the transmit unit transceiver comprises at least one of:

a radio frequency (RF) transceiver;

a millimeter wave (MMW) transceiver;

a radio frequency identification (RFID) tag and reader;

a near field communication (NFC) transceiver.

22. The wireless power transmit unit of claim 18 further comprises:

at least one of a radio frequency identification (RFID) tag and an RFID reader, wherein the RFID tag stores wireless power unit capabilities.

23. The wireless power transmit unit of claim 18, wherein the transmit unit processing module is further operable to:

determine a number of transmit unit coils;

determine a number of proximal wireless power receive units;

determine whether the number of transmit unit coils is equal to or greater than the number of proximal wireless power receive units;

when the number of transmit unit coils is equal to or greater than the number of proximal wireless power receive units, determine pairings of a transmit unit coil of the transmit unit coils to a wireless power receive unit of the proximal wireless power receive units; and

determine, for each of the pairings, at least one of frequency allocation and power allocation.

24. The wireless power transmit unit of claim 23, wherein the transmit unit processing module is further operable to:

when the number of transmit unit coils is less than the number of proximal wireless power receive units, determine an affiliation of one of the transmit unit coils and at least two of the proximal wireless power receive units; and

determine sharing parameters of the one of the transmit unit coils by the at least two of the proximal wireless power receive units.

25. The wireless power transmit unit of claim 18 further comprises:

a network transceiver operable to provide a connection to a network;

wherein the transmit unit processing module is further operable to;

determine whether a wireless power receive unit is in need of the connection to the network; and

when the wireless power receive unit is in need of the connection to the network, enable the wireless power transmit unit to function as a router for the wireless power receive unit, wherein the control channel is used to convey a network communication between the wireless power transmit unit and the wireless power receive unit.

26. A wireless power receive unit comprises:

a wireless power receive circuit, when operable, converts a wireless power magnetic field from a wireless power transmit unit into a voltage;

a receive unit transceiver; and

a receive unit processing module operable to;

attempt to identify a control channel protocol for communication on a control channel between the wireless power transmit unit and the wireless power receive unit;

determine whether the receive unit transceiver is capable of communication using the control channel protocol;

when the receive unit transceiver is not capable of communication using the control channel protocol, determine whether the receive unit transceiver is lacking hardware or lacking software to support the control channel protocol; and

when the receive unit transceiver is lacking software, generate a network message to download the software to support the control channel protocol.

27. A wireless power receive unit comprises:

a wireless power receive circuit, when operable, converts a wireless power magnetic field from a wireless power transmit unit into a voltage;

a receive unit transceiver; and

a receive unit processing module operable to;

attempt to identify a first control channel protocol for communication on a control channel between the wireless power transmit unit and the wireless power receive unit;

when the receive unit transceiver is capable of identifying the first control channel protocol, coordinate configuration of the receive unit transceiver to transceive a communication regarding the wireless power magnetic field via the control channel using the first control channel protocol; and

when the receive unit transceiver is not capable of identifying the first control channel protocol, attempting to use a second control channel protocol for communication on the control channel between the wireless power transmit unit and the wireless power receive unit.

28. The wireless power receive unit of claim 27, wherein the first control channel protocol includes at least one of:

a standard control channel protocol and a proprietary control channel protocol; and

wherein the second control channel protocol includes at least another one of;

a standard control channel protocol and a proprietary control channel protocol.