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SamsungPatent applicationBatteries & energyInterest 6/10

Samsung patents wireless charging that sends data via power adjustments

Patent drawing
Patent drawing from the official filing.

Samsung describes a wireless charging receiver that uses the power flow itself to transmit data. It adjusts the timing of electrical signals to create a specific pattern, allowing the device to communicate with the charger while receiving energy.

Why it mattersThis could allow phones and other gadgets to tell a charging pad exactly how much power they need, potentially making wireless charging more efficient and responsive.

In the filing’s own words

A receiver device of a wireless power charging system is provided. The receiver includes a receiver LC tank including a receiver load capacitor and a receiver coil, the receiver LC tank being configured to receive power induced from a transmitter device, a coil current sensor configured to sense a receiver coil current based on the power, a rectifier circuit configured to rectify receiver alternating current (AC) voltages provided from the receiver LC tank into a rectified voltage in response to rectified gate signals, and processing circuitry configured to generate the rectified gate signals by adjusting a phase difference between the receiver coil current and a differential signal between the receiver AC voltages according to a phase shift control signal and an ASK pattern signal, and output the rectified gate signals to the rectifier circuit.

What exactly they claim (claim 1)

1. A receiver device comprising: a receiver LC tank including a receiver load capacitor and a receiver coil, the receiver LC tank being configured to receive power induced from a transmitter device; a coil current sensor configured to sense a receiver coil current based on the power; a rectifier circuit configured to rectify receiver alternating current (AC) voltages provided from the receiver LC tank into a rectified voltage in response to rectified gate signals; and processing circuitry configured to, generate the rectified gate signals by adjusting a phase difference between the receiver coil current and a differential signal between the receiver AC voltages according to a phase shift control signal and an ASK pattern signal, and output the rectified gate signals to the rectifier circuit.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
WIRELESS POWER CHARGING SYSTEM PERFORMING ASK MODULATION USING ACTIVE REACTANCE
Publication number
US20260322169A1
Application number
19398597
Filed
Nov 24, 2025
Published
Oct 15, 2026
Inventors
1
Claims
20

Classified under

H02J 50/12 Electricity & electronicsH04L 27/08 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.