# Patent

## Title
Systems and methods for determining optimal charging positions to maximize efficiency of power received from wirelessly delivered sound wave energy

## Abstract

The present disclosure describes a methodology for tracking position and orientation of one or more electronic devices, which may receive charge through wireless sound power transmission based on pocket-forming. This methodology may include one transmitter and at least one or more receivers, being the transmitter the source of energy and the receiver the device that is desired to charge or power. The transmitter may identify and locate the device to which the receiver is connected for subsequently charge and/or charge it. In order to increase charging and/or powering of electronic devices, a plurality of sensors may provide information determining the optimal position and/or orientation aimed to receive charge and/or power at the maximum available efficiency.

## Background
CROSS-REFERENCES TO RELATED APPLICATIONS
The present disclosure is related to U.S. Non-Provisional patent application Ser. No. 13/891,399 filed on May 10, 2013, entitled “Receivers For Wireless Power Transmission”; Ser. No. 13/891,430 filed on May 10, 2013, entitled “Methodology for Pocket-forming”; and Ser. No. 13/891,445 filed on May 10, 2013, entitled “Transmitters For Wireless Power Transmission”, invented by Michael A. Leabman, the entire contents of which are incorporated herein by these references.
FIELD OF INVENTION
The present disclosure relates to electronic transmitters, and more particularly to transmitters for wireless sound power transmission.
BACKGROUND OF THE INVENTION
Electronic devices such as laptop computers, smartphones, portable gaming devices, tablets and so forth may require power for performing their intended functions. This may require having to charge electronic equipment at least once a day, or in high-demand electronic devices more than once a day. Such an activity may be tedious and may represent a burden to users. For example, a user may be required to carry chargers in case his electronic equipment is lacking power. In addition, users have to find available power sources to connect to. Lastly, users must plugin to a wall or other power supply to be able to charge his or her electronic device. However, such an activity may render electronic devices inoperable during charging. Current solutions to this problem may include inductive pads which may employ magnetic induction or resonating coils. Nevertheless, such a solution may still require that electronic devices may have to be placed in a specific place for powering. Thus, electronic devices during charging may not be portable. For the foregoing reasons, there is a need for a wireless power transmission system where electronic devices may be powered without requiring extra chargers or plugs, and where the mobility and portability of electronic devices may not be compromised. Such system may charge and/or power electronic devices with an efficiency that may depend on distance, obstacles, temperature, among others. Thus, a system for tracking and positioning electronic devices is required; such system may locate optimal orientation for charging and/or powering devices at a maximum available efficiency.
SUMMARY OF THE INVENTION
The present disclosure provides a system for determining the optimal position and orientation of electronic devices through a plurality of sensors which may provide information to software that may notify the user in order to change position and orientation for receiving charge and/or power at the maximum available efficiency.
System for tracking position and orientation may include one or more flowcharts which may be included into an algorithm or group of instructions, which may be used by a processor, CPU, among others, for determining where an electronic device receives charge and/or power at the maximum available efficiency. Thus, a high flexibility may be allow for charging and/or powering a plurality of electronic devices because, wireless power transmission may be employed with a maximum available efficiency in variety of applications, regardless obstacles and interferences.



BRIEF DESCRIPTION OF THE DRAWINGS
Non-limiting embodiments of the present disclosure are described by way of example with reference to the accompanying figures which are schematic and may not be drawn to scale. Unless indicated as representing the background art, the figures represent aspects of the disclosure.
FIG. 1 illustrates a wireless power transmission example situation using pocket-forming.
FIG. 2 illustrates a tracking and positioning flowchart, which may be employed by an algorithm in a controller, CPU, processor, computer, among others, for determining the optimal position and orientation of an electronic device which may receive charge and/or power through wireless power transmission.
FIG. 3A illustrates wireless sound power transmission, where a cellphones receives charge and/or power at low efficiency.
FIG. 3B illustrates wireless sound power transmission, where a cellphones receives charge and/or power at low efficiency.



DETAILED DESCRIPTION OF THE DRAWINGS
“Pocket-forming” may refer to generating two or more sound waves which converge in 3-d space, forming controlled constructive and destructive interference patterns.
“Pockets of energy” may refer to areas or regions of space where energy or power may accumulate in the form of constructive interference patterns of sound waves.
“Null-space” may refer to areas or regions of space where pockets of energy do not form because of destructive interference patterns of sound waves.
“Transmitter” may refer to a device, including a chip which may generate two or more sound wave signals, at least one sound wave signal being phase shifted and gain adjusted with respect to other sound wave signals, substantially all of which pass through one or more sound wave transducer such that focused sound wave signals are directed to a target.
“Receiver” may refer to a device including at least one sensor element, at least one rectifying circuit and at least one power converter, which may utilize pockets of energy for powering, or charging an electronic device.
“Adaptive pocket-forming” may refer to dynamically adjusting pocket-forming to regulate power on one or more targeted receivers.
DESCRIPTION OF THE DRAWINGS
In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, which are not to scale or to proportion, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings and claims, are not meant to be limiting. Other embodiments may be used and/or and other changes may be made without departing from the spirit or scope of the present disclosure.
FIG. 1 illustrates wireless power transmission 100 using pocket-forming. A transmitter 102 may transmit controlled sound waves 104 which may converge in 3-d space. These sound wave (SW) signals may be controlled through phase and/or relative amplitude adjustments to form constructive and destructive interference patterns (pocket-forming). Pockets of energy 108 may be formed at constructive interference patterns and can be 3-dimensional in shape whereas null-spaces may be generated at destructive interference patterns. A receiver 106 may then utilize pockets of energy 108 produced by pocket-forming for charging or powering an electronic device, for example a laptop computer 110 and thus effectively providing wireless sound power transmission. In other situations there can be multiple transmitters 102 and/or multiple receivers 106 for powering various electronic equipment for example smartphones, tablets, music players, toys and others at the same time. In other embodiments, adaptive pocket-forming may be used to regulate power on electronic devices.
The method of wireless power transmission begins by generating two or more sound waves from a transmitter with at least two sound waves transmit transducers. The transmitter forms controlled constructive and destructive interference patterns from the generated sound waves. The system accumulates the energy or power in the form of constructive interference patterns from the sound waves to form pockets of energy. The transmitter assists in converging the pockets of energy in 3-d space to a targeted electronic device. Whereby the converged pockets of energy are collected by a receiver connected to the electronic device with at least one sensor for powering or charging the targeted electronic device from the pockets of energy. The electronic devices are typically a cellphone, iPad, iPhone, tablet, an Android device or other similar electronic device operating by charging a battery associated with the device.
FIG. 2 illustrates tracking and positioning flowchart 200, which may be employed by an algorithm in a controller, CPU, processor, computer among others, for determining the optimal position and orientation of an electronic device which may receive power and/or charge through wireless sound power transmission 100.
In order to achieve the optimal efficiency, electronic device may use a variety of sensors for determining the voltage level in battery and/or the power level received when wireless power transmission starts 202. Such sensors may indicate whether the device is receiving power at the maximum available efficiency 204. Maximum available efficiency may depend on distance from transmitter, obstacles, temperature, among others. If the device is receiving power at maximum available efficiency, then an application, software or program installed on the electronic device and/or in the receiver 106 may aware and/or notify user to maintain current position 206. Moreover, if the device is receiving power at a lower efficiency than the maximum available efficiency, then software or program may use a variety of sensors for tracking and determining the optimal position of electronic device in relation with transmitter 102 position and orientation. Sensors may include accelerometers, infrared, GPS, among others. Furthermore, communication reciprocity may be used by the communication module for tracking and positioning. Communication module may include and combine Bluetooth technology, infrared communication, WI-FI, FM radio among others. By comparing voltage level and/or power received in each position and/or orientation of electronic device, the software and/or program may notify and/or guide user to change device position 208 for looking the optimal position and/or orientation.
FIG. 3 illustrates wireless power transmission 300, where a transmitter 302 may produce pocket-forming over plurality of cellphone 304. As depicted in FIG. 3A, wireless sound power transmission 300 may charge and/or power cellphone 304 at a low efficiency because sensors 306 on the receiver 106 may be faced to the same direction of the sound waves 310, thus pocket of energy 308 may provide less charge and/or power to sensors 306. As shown in FIG. 3B By turning cellphone 304 180° degrees, sensor 306 may receive power at a higher efficiency, such efficiency may be achieved due the sensor 306 orientation, which may be faced in the opposite direction of sound waves 310.
While various aspects and embodiments have been disclosed herein, other aspects and embodiments may be contemplated. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

## Claims

1. A method for transmitting wireless sound power, comprising:
generating two or more sound waves from a transmitter with at least two sound wave transmit transducers;
transmitting, via the at least two sound wave transmit transducers, the two or more sound waves to cause formation of a controlled constructive interference pattern and a destructive interference pattern from the generated sound waves, wherein:
the destructive interference pattern forms a null space that surrounds the controlled constructive interference pattern, wherein energy or power is in the form of the controlled constructive interference pattern as a pocket of sound wave energy in proximity to a targeted electronic device;

receiving information used to determine power level of the pockets of sound wave energy and efficiency of power received by the targeted electronic device from the pocket of sound wave energy; and
in accordance with determining that the information used to determine the power level of the pocket of sound wave energy and the efficiency of the power received by the targeted electronic device indicates that the targeted electronic device is receiving power at less than a maximum available efficiency, instructing a user of the targeted electronic device to change the targeted electronic device's position and orientation until a level of efficiency that is no less than the maximum available efficiency is achieved for the power level received by the targeted electronic device via a receiver connected to the targeted electronic device, the receiver having at least one antenna for powering the targeted electronic device using energy from the pocket of sound wave energy.

2. The method for transmitting wireless sound power of claim 1, wherein the receiving is accomplished through accelerometers, infrared or GPS sensor circuits for tracking and positioning the targeted electronic device.

3. The method for transmitting wireless sound power of claim 1, further comprising receiving signals at the transmitter for comparing voltage level and power received at the targeted electronic device to guide the user to change the targeted electronic device's position and orientation until the level of efficiency that is no less than the maximum available efficiency is achieved for the power level received by the targeted electronic device via the receiver connected to the targeted electronic device.

4. The method for transmitting wireless sound power of claim 3, wherein the transmitter includes communicating circuitry that uses Bluetooth, infrared, Wi-Fi or FM radio signals for communication between the transmitter and the receiver.

5. The method for transmitting wireless sound power of claim 1, further comprising processing the information used to determine the power level of the pockets of sound wave energy and the efficiency of the power received by the targeted electronic device to determine whether the targeted electronic device is receiving power at less than the maximum available efficiency.

6. The method of claim 1, further comprising:
in accordance with determining that the information used to determine the power level of the pockets of sound wave energy and the efficiency of the power received by the targeted electronic device indicates that the targeted electronic device is receiving power at the maximum available efficiency, notifying the user to maintain the targeted electronic device's position and orientation.

7. A system for transmitting wireless sound power, comprising:
a transmitter for generating two or more sound waves, the transmitter having at least two sound wave transmit transducers, via the at least two sound wave transmit transducers, to form a controlled constructive interference pattern and a destructive interference pattern from the generated sound waves, wherein:
the destructive interference pattern forms a null space that surrounds the controlled constructive interference pattern, wherein energy or power is in the form of the controlled constructive interference pattern as a pocket of sound wave energy in proximity to a targeted electronic device;

a processor within the transmitter controlling formation of the constructive interference pattern from the generated sound waves to form the pocket of sound wave energy;
a receiver with at least one sensor for receiving and collecting power from the pockets of sound wave energy to power the targeted electronic device connected to the receiver;
a wireless communication network connected between the transmitter and the receiver for utilizing antennas located on the transmitter and the receiver for broadcasting signals from one or more sensors located on the transmitter, the receiver, or the targeted electronic device, the broadcasting signals including information used to determine the power level of the pocket of sound wave energy and efficiency of charging power received by the targeted electronic device from the pockets of sound wave energy; and
a software application installed on the targeted electronic device or the receiver that is configured to, in accordance with a determination that the information used to determine the power level of the pocket of sound wave energy and the efficiency of the charging power received by the targeted electronic device indicates that the targeted electronic device is receiving power at less than a maximum available efficiency, instruct a user of the targeted electronic device to change the targeted electronic device's position and orientation until a level of efficiency that is no less than the maximum available efficiency is achieved for the power level received by the targeted electronic device via the receiver.

8. The system of claim 7, wherein the software application is further configured to:
in accordance with determining that the information used to determine the power level of the pockets of sound wave energy and the efficiency of the power received by the targeted electronic device indicates that the targeted electronic device is receiving power at the maximum available efficiency, notifying the user to maintain the targeted electronic device's position and orientation.

9. The system for transmitting wireless sound power of claim 7, wherein the communication network is used to exchange Bluetooth, infrared, Wi-Fi or FM radio signals.

10. The system for transmitting wireless sound power of claim 7, wherein the one or more sensors are accelerometers, infrared, proximity, motion detector or GPS circuits.

11. The system for transmitting wireless sound power of claim 7, wherein the one or more sensors provide information concerning a plurality of electronic devices ready to be charged.

12. The system for transmitting wireless sound power of claim 7, wherein the targeted electronic device is a cellphone, iPad, iPod, Tablet, iPhone, an Android device, or other electronic device, and a battery associated with the targeted electronic device is charged using power from the pockets of sound wave energy.

13. The system for transmitting wireless sound power of claim 7, wherein the transmitter is configured to produce a plurality of pockets of sound wave energy over a plurality of electronic devices.

14. The system for transmitting wireless sound power of claim 7, wherein the processor is a computer, an ASIC, a controller, a microprocessor or other similar device that is capable of processing instructions.

15. The system for transmitting wireless sound power of claim 7, wherein the transmitter creates the pocket of sound wave energy in 3-D space in a direction based on the broadcasting signals.

16. The system for transmitting wireless sound power of claim 7, wherein the processor dynamically adjusts formation of the pocket of sound wave energy to regulate power on the targeted electronic device.

17. The system for transmitting wireless sound power of claim 7, wherein the processor includes instructions for processing the broadcasting signals to determine the tracking and positioning of the targeted electronic device.

18. A non-transitory computer-readable storage medium having executable instructions for transmitting wireless sound power that, when executed by a processor, cause the processor to perform operations comprising:
generating two or more sound waves from a transmitter with at least two sound wave transmit transducers;
transmitting, via the at least two sound wave transmit transducers, the two or more sound waves to cause formation of a controlled constructive interference pattern and a destructive interference pattern from the generated sound waves, wherein:
the destructive interference pattern forms a null space that surrounds the controlled constructive interference pattern, wherein energy or power is in the form of the controlled constructive interference pattern as a pocket of sound wave energy in proximity to a targeted electronic device;

receiving signals used to determine power level of the pocket of sound wave energy and efficiency of power received by the targeted electronic device from the pocket of sound wave energy; and
in accordance with determining that the signals used to determine the power level of the pocket of sound wave energy and the efficiency of the power received by the targeted electronic device indicates that the targeted electronic device is receiving power at less than a maximum available efficiency, instructing a user of the targeted electronic device to change the targeted electronic device's position and orientation until a level of efficiency that is no less than the maximum available efficiency is achieved for the power level received by the targeted electronic device via a receiver connected to the targeted electronic device, the receiver having at least one antenna for powering the targeted electronic device using energy from the pocket of sound wave energy.

19. The non-transitory computer-readable storage medium of claim 18, wherein the receiver or the targeted electronic device includes sensors generating signals representing the power level of the pocket of sound wave energy and position and orientation of the targeted electronic device.

20. The non-transitory computer-readable storage medium of claim 18, wherein the executable instructions include predetermined instructions for determining the optimal position and orientation of the targeted electronic device at which the level of efficiency that is no less than the maximum available efficiency is achieved for the power level received by the targeted electronic device via the receiver connected to the targeted electronic device.

21. The non-transitory computer-readable storage medium of claim 18, the operations further comprising receiving signals at the transmitter for comparing voltage level and power received at the targeted electronic device to guide the user to change the targeted electronic device's position and orientation until the level of efficiency that is no less than the maximum available efficiency is achieved for the power level received by the targeted electronic device via the receiver connected to the targeted electronic device.

22. The non-transitory computer-readable storage medium of claim 18, the operations further comprising:
in accordance with determining that the information used to determine the power level of the pockets of sound wave energy and the efficiency of the power received by the targeted electronic device indicates that the targeted electronic device is receiving power at the maximum available efficiency, notifying the user to maintain the targeted electronic device's position and orientation.