News Column

"Resolving Communcations in a Wireless Power System with Co-Located Transmitters" in Patent Application Approval Process

July 3, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventors Von Novak, William H. (San Diego, CA); Kallal, Edward (San Diego, CA), filed on March 1, 2013, was made available online on June 19, 2014, according to news reporting originating from Washington, D.C., by VerticalNews correspondents.

This patent application is assigned to QUALCOMM Incorporated.

The following quote was obtained by the news editors 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."

In addition to the background information obtained for this patent application, VerticalNews journalists 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 a wireless charger for charging a chargeable device, the wireless charger comprising a wireless power antenna, a wireless power transmitter coupled to the wireless power antenna and configured to generate a wireless charging field in a charging region, a first communication antenna, a first transceiver coupled to the communication antenna and configured to communicate with the chargeable device via the communication antenna, a first signal strength detector configured to determine a signal strength of a first signal received by the transceiver, and a controller configured to determine whether the chargeable device is within the charging region based at least in part on the signal strength of the first signal.

"Another aspect of the present disclosure provides a method for charging a chargeable device via a wireless charger, the method comprising, receiving a first signal from the chargeable device via a first communication antenna, determining a signal strength of the first signal, and determining whether the chargeable device is within a charging region based at least in part on the signal strength of the first signal

"Another aspect of the present disclosure provides a wireless charger for charging a chargeable device, the wireless charger comprising means for transmitting power wirelessly, means for generating a wireless charging field in a charging region via the means for transmitting power, means for transmitting or receiving communication signals, means for communicating with the chargeable device via the means for transmitting or receiving communication signals, means for determining a signal strength of a first signal received by the means for communicating, and means for determining whether the chargeable device is within the charging region based at least in part on the signal strength of the first 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 functional block diagram of a receiver in the presence of multiple transmitters, in accordance with exemplary embodiments of the invention.

"FIG. 7 is a block diagram of a wireless charging system that may incorporate the transmit circuitry of FIG. 4 and the receive circuitry of FIG. 5.

"FIG. 8 is a timing and signal flow diagram of communications between a wireless charger and a chargeable device, such as the wireless charger and the chargeable device of FIG. 7, to establish a connection between the wireless charger and the chargeable device.

"FIG. 9 depicts two co-located wireless chargers, each having three antennas for out-of-band communication.

"FIG. 10 is a block diagram of a wireless charger with communications circuitry shared between out-of-band antennas.

"FIG. 11 is a block diagram of a wireless charger with independent communications circuitry for each out-of-band antenna.

"FIG. 12 depicts two co-located wireless chargers which may communicate with each other.

"FIG. 13 is a flowchart of an exemplary method for verifying communications with a chargeable device based upon a signal strength.

"FIG. 14 is a flowchart of an exemplary method for evaluating an out-of-band communication channel connection between a receiver and a transmitter.

"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."

URL and more information on this patent application, see: Von Novak, William H.; Kallal, Edward. Resolving Communcations in a Wireless Power System with Co-Located Transmitters. Filed March 1, 2013 and posted June 19, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=5599&p=112&f=G&l=50&d=PG01&S1=20140612.PD.&OS=PD/20140612&RS=PD/20140612

Keywords for this news article include: QUALCOMM Incorporated.

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Source: Politics & Government Week


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