Method and system for integrated wireless power and data communication

• US 8,868,140 B2
• Filed: 03/15/2013
• Issued: 10/21/2014
• Est. Priority Date: 12/08/2008
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Zhu, Chunhui, Ngo, Chiu
• Primary Examiner(s): Aminzay, Shaima Q
• Application Number:
  US13/841,643
• Publication Number:
  US 20130210378A1
• Time in Patent Office: 585 Days
• Field of Search: 455/574, 455/522, 455/572, 455/573, 455/127.1, 455/67.11, 455/69, 455/41.1, 455/41.2, 370/235, 370/310, 370/311, 370/318, 370/343, 320/137, 713/320, 307/66
• US Class Current: 455/574
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• 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: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 1/1607 Supply circuits converters H02M; filters therefor H02M1/14; voltage stabilisers G05F1/46

Abstract

A method and system of integrated wireless power and data transmission in a wireless device having a data communication circuit for wireless data communication and a power reception circuit including a charge storage unit. The wireless device is tuned to receive wireless RF signals in a certain frequency band via an antenna. Switching between power reception mode and data communication mode is detected. Received RF signal electrical charge is selectively distributed to the power reception circuit and/or the data communication circuit based on the switching mode and/or strength of the RF signal.

Claims

1. A method comprising:

receiving wireless RF signals via an antenna of a wireless electronic device;

selectively switching, by the wireless electronic device, a switching mode between a power reception mode and a data communication mode; and

adaptively selecting distribution of received RF signal electrical charge to one of a first circuit, a second circuit, and the first circuit and the second circuit of the wireless electronic device based on one of the switching mode, strength of the RF signal, and the switching mode and the strength of the RF signal, and wherein upon the RF signal being greater than a selected threshold based on sensitivity of the second circuit, an RF splitter distributes received energy between the first circuit and the second circuit.

2. The method of claim 1 wherein adaptively selecting distribution of received RF signal electrical charge further comprises, in power reception mode distributing received RF signal electrical charge to the first circuit only to charge a charge storage unit.

3. The method of claim 2 wherein adaptively selecting distribution of received RF signal electrical charge further comprises, in data communication mode:

determining strength of the RF signal; and

if the RF signal strength is less than a threshold, then distributing the RF signal electrical charge to the second circuit only to operate the second circuit.

4. The method of claim 3 wherein adaptively selecting distribution of received RF signal electrical charge in data communication mode further comprises:

if the RF signal strength is greater than a threshold, then splitting distribution of the RF signal electrical charge between the second circuit and the first circuit.

5. The method of claim 4 wherein in data communication mode splitting distribution of the RF signal electrical charge further comprises splitting distribution of the RF signal electrical charge between the second circuit and the first circuit such that received RF signal electrical charge in excess of second circuit operational needs is distributed to the first circuit to charge the charge storage unit.

6. The method of claim 5, wherein the first circuit comprises a power reception circuit, and the second circuit comprises a data communication circuit.

7. The method of claim 2, wherein received RF power in excess of operation of the second circuit requirements is used for charging the charge storage unit.

8. The method of claim 1, wherein transmission power of the wireless RF signals comprises radio waves, and upon the RF signal being greater than a selected threshold based on sensitivity of the data communication circuit, an RF splitter distributes the received energy between the power reception circuit and the data communication circuit.

9. The method of claim 1, wherein received RF power in excess of operation of the data communication circuit requirements is used for charging the charge storage unit, and distributing received RF signal electrical charge is adaptive based on strength of the received RF signal and power requirement of the data communication circuit.

10. The method of claim 1, wherein transmission power of the wireless RF signals comprises radio waves.