Transmit Power over Wireless Signal

• US 20120235499A1
• Filed: 03/18/2011
• Published: 09/20/2012
• Est. Priority Date: 03/18/2011
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Liu, Eric, Chatterjee, Manjirnath, Wolf, Nathaniel
• Granted Patent: US 9,106,106 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H02J 50/15 using ultrasonic waves
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

A device with a sensor to detect a location of a portable device within proximity of the device and a controller to identify an amount of power to transmit to the portable device and reposition a directional antenna to transmit to the portable device an identified amount of power over a wireless signal based on the location of the portable device.

Claims

1. A method for transmitting power to a portable device comprising:

detecting a location of a portable device within proximity of a device with a sensor;

identifying an amount of power to transmit to the portable device; and

repositioning a directional antenna of the device based on the location of the portable device and transmitting an identified amount of power over a wireless signal to the portable device.

2. The method for transmitting power to a portable device of claim 1 further comprising emitting polarized waves with the sensor to detect the location of the portable device.

3. The method for transmitting power to a portable device of claim 2 further comprising utilizing a time of flight of the polarized waves to detect the location of the portable device.

4. The method for transmitting power to a portable device of claim 1 wherein identifying an amount of power to transmit to the portable device includes receiving a power requirement from the portable device.

5. The method for transmitting power to a portable device of claim 1 wherein identifying an amount of power to transmit to the portable device includes identifying at least one of a make, a model, and a manufacturer of the portable device.

6. The method for transmitting power to a portable device of claim 1 further comprising identifying a frequency to utilize if transmitting the wireless signal with the identified amount of power from the device to the portable device.

7. The method for transmitting power to a portable device of claim 6 wherein the directional antenna is repositioned based on the frequency.

8. The method for transmitting power to a portable device of claim 6 wherein the directional antenna is dynamically tuned based on the frequency.

9. The method for transmitting power to a portable device of claim 6 further comprising determining whether the frequency is already being utilized by at least one of the device, the portable device, and another device and selecting a second frequency to utilize if the frequency is already being utilized and repositioning the directional antenna based on the second frequency.

10. A device comprising:

a sensor to detect a location of a portable device within proximity of the device;

a power source to supply power to the portable device;

a directional antenna to wirelessly transmit the power from the power source to the portable device; and

a controller to identify an amount of power to transmit to the portable device and reposition the directional antenna to transmit an identified amount of power over a wireless signal based on the location of the portable device.

11. The device of claim 10 wherein the portable device includes an antenna coupled to a portable power source to receive the identified amount of power over the wireless signal.

12. The device of claim 10 wherein the sensor emits circularly polarized waves over an ultra wide band to detect the location of the portable device relative to the device.

13. The device of claim 10 further comprising a communication component to detect information of the portable device for the controller to use to identify the amount of power to transmit to the portable device.

14. The device of claim 13 wherein the portable device transmits at least one of a location and an orientation of the portable device to the communication component.

15. The device of claim 14 wherein the directional antenna is repositioned based on at least one of the location and the orientation of the portable device.

16. The device of claim 10 wherein the directional antenna transmits the wireless signal with the identified amount of power as a directional beam.

17. A computer readable medium comprising instructions that if executed cause a controller to:

emit polarized waves with a sensor to detect a location of a portable device within proximity of the device;

detect information of the portable device to identify an amount of power to transmit to the portable device; and

reposition a directional antenna of the device based on the location of the portable device and transmit an identified amount of power over a wireless signal to the portable device.

18. The computer readable medium comprising instructions of claim 17 wherein the controller identifies at least one of a power consumption rate of the portable device and a battery level of the portable device.

19. The computer readable medium comprising instructions of claim 17 wherein the controller modifies the amount of power transmitted over the wireless signal based at least one of a power consumption rate of the portable device and a battery level of the portable device.

20. The computer readable medium comprising instructions of claim 17 wherein the controller authenticates the portable device with an identification of the portable device before the directional antenna transmits power to the portable device.