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Researchers Submit Patent Application, "Protection Device and Method for Power Transmitter", for Approval

May 8, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventors Radovic, Milorad (San Diego, CA); Mayo, Gabriel Isaac (North Potomac, MD), filed on December 16, 2013, was made available online on April 24, 2014.

The patent's assignee is Qualcomm Incorporated.

News editors obtained the following quote from the background information supplied by the inventors: "An increasing number and variety of electronic devices are powered via rechargeable batteries. Such devices include mobile phones, portable music players, laptop computers, tablet computers, computer peripheral devices, communication devices (e.g., Bluetooth devices), digital cameras, hearing aids, and the like. While battery technology has improved, battery-powered electronic devices increasingly require and consume greater amounts of power, thereby often requiring recharging. Rechargeable devices are often charged via wired connections through cables or other similar connectors that are physically connected to a power supply. Cables and similar connectors may sometimes be inconvenient or cumbersome and have other drawbacks. Wireless charging systems that are capable of transferring power in free space to be used to charge rechargeable electronic devices or provide power to electronic devices may overcome some of the deficiencies of wired charging solutions. As such, wireless power transfer systems and methods that efficiently and safely transfer power to electronic devices are desirable."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "Various implementations of systems, methods and devices within the scope of the appended claims each have several aspects, no single one of which is solely responsible for the desirable attributes described herein. Without limiting the scope of the appended claims, some prominent features are described herein.

"Details of one or more implementations of the subject matter described in this specification are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale.

"One aspect of the disclosure provides an apparatus to transmit wireless power. The apparatus comprises a transmit antenna configured to generate a wireless field at a power level sufficient to charge one or more electronic devices. A driver configured to power the transmit antenna for generation of the wireless field. The power level of the wireless field is based at least on a power level of the driver. The apparatus further comprises a sensing circuit configured to sense, at one or more nodes, wireless power received at the transmit antenna and further configured to generate a monitoring signal based at least on the sensed wireless power received at the transmit antenna. The apparatus further comprises a control circuit configured to modify the power level of the driver based at least on the monitoring signal.

"Another aspect of the disclosure provides a method of protecting a wireless power transmitter. The method comprises sensing at one or more nodes of the wireless power transmitter for wireless power received at a transmit antenna of the wireless power transmitter. The transmit antenna is configured to generate a wireless field at a power level sufficient to charge one or more electronic devices. The wireless power transmitter further includes a driver configured to power the transmit antenna for generation of the wireless field. The power level of the wireless field is based at least on a power level of the driver. The method further comprises generating a monitoring signal based at least on the sensed wireless power received at the transmit antenna. The method further comprises modifying the power level of the driver based at least on the monitoring signal.

"Another aspect of the disclosure provides an apparatus for protecting a wireless power transmitter. The apparatus comprises means for generating a wireless field at a power level sufficient to charge one or more electronic devices. The apparatus further comprises means for powering the wireless field generating means to generate the wireless field. The power level of the wireless field can be based at least on a power level of the powering means. The apparatus further comprises means for sensing wireless power received at the wireless field generating means. The sensing means is configured to generate a monitoring signal based at least on the sensed wireless power received at the wireless field generating means. The apparatus further comprises means for modifying the power level of the powering means based at least on the monitoring signal.

BRIEF DESCRIPTION OF THE DRAWINGS

"FIG. 1 is a functional block diagram of an exemplary wireless power transfer system, in accordance with exemplary embodiments of the invention.

"FIG. 2 is a functional block diagram of exemplary components that may be used in the wireless power transfer system of FIG. 1, in accordance with various exemplary embodiments of the invention.

"FIG. 3 is a schematic diagram of a portion of transmit circuitry or receive circuitry of FIG. 2 including a transmit or receive antenna, in accordance with exemplary embodiments of the invention.

"FIG. 4 is a functional block diagram of a transmitter that may be used in the wireless power transfer system of FIG. 1, in accordance with exemplary embodiments of the invention.

"FIG. 5 is a functional block diagram of a receiver that may be used in the wireless power transfer system of FIG. 1, in accordance with exemplary embodiments of the invention.

"FIG. 6 is a schematic diagram of a portion of transmit circuitry that may be used in the transmit circuitry of FIG. 4.

"FIG. 7 is a functional block diagram of a wireless power transfer system that includes first and second transmitters such as that of FIG. 1, in accordance with exemplary embodiments of the invention.

"FIG. 8 is a functional block diagram of the sensing circuitry of FIG. 7 that may be used in a transmitter such as one or more of the transmitters of FIG. 7, in accordance with exemplary embodiments of the invention.

"FIG. 9 is a functional block diagram of the control circuitry of FIG. 7 that may be used in a transmitter such as one or more of the transmitters of FIG. 7, in accordance with exemplary embodiments of the invention.

"FIGS. 10A-10D are schematic diagrams of a controllable driver circuitry that may be used in a transmitter such as one or more of the transmitters of FIG. 7, in accordance with exemplary embodiments of the invention.

"FIG. 11 is a flowchart diagram of a method of protecting a transmitter, in accordance with exemplary embodiments of the invention.

"FIG. 12 is a flowchart diagram of a method of protecting a transmitter while initiating wireless power transmission, in accordance with exemplary embodiments of the invention.

"FIG. 13 is a functional block diagram of a wireless power transmitter, in accordance with an exemplary embodiment.

"The various features illustrated in the drawings may not be drawn to scale. Accordingly, the dimensions of the various features may be arbitrarily expanded or reduced for clarity. In addition, some of the drawings may not depict all of the components of a given system, method or device. Finally, like reference numerals may be used to denote like features throughout the specification and figures."

For additional information on this patent application, see: Radovic, Milorad; Mayo, Gabriel Isaac. Protection Device and Method for Power Transmitter. Filed December 16, 2013 and posted April 24, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=5410&p=109&f=G&l=50&d=PG01&S1=20140417.PD.&OS=PD/20140417&RS=PD/20140417

Keywords for this news article include: Qualcomm Incorporated.

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Source: Politics & Government Week


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