METHOD AND SYSTEM FOR INTEGRATED WIRELESS POWER AND DATA COMMUNICATION

• US 20130210378A1
• Filed: 03/15/2013
• Published: 08/15/2013
• Est. Priority Date: 12/08/2008
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Zhu, Chunhui, Ngo, Chiu
• Granted Patent: US 8,868,140 B2
• Time in Patent Office: Days
• US Class Current: 455/226.2
• 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;

selectively switching between a power reception mode and a data communication mode; and

adaptively selecting distribution of received RF signal electrical charge to a first circuit and/or a second circuit based on the switching mode and/or strength of the RF signal.

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.