Wireless Power Receiver Advertising for Secure Channel-Free Charging

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Solution Overview

Problem

Existing wireless power transmission systems require bidirectional communication, which consumes significant storage space on limited memory circuits, and lacks a secure method for transmitting power without establishing a communication channel.

Innovation Solution

Implementing a communication framework at the wireless-power-receiving device that uses unidirectional advertisements to transmit charging information, allowing the wireless-power-transmitting device to determine and adjust the charging needs without establishing a communication channel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If bidirectional communication is implemented between wireless power transmitting and receiving devices, then secure power transmission and device verification are achieved, but storage space consumption increases significantly on limited memory circuits

Engineering Contradiction:

Improvesecure power transmissionVSAvoidstorage space

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent extracts the communication function from the power transmission system by using unidirectional advertisements from the receiving device only, eliminating the need for bidirectional communication protocols and their associated storage requirements while maintaining secure power transmission

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of the conventional approach where the transmitting device communicates with the receiving device, the patent inverts the communication direction by having the receiving device send unidirectional advertisements to the transmitting device, thereby reducing storage space requirements on the receiving device

Inventive Principle:

Principle #13The other way round (Inversion)

2Ease of operation

If bidirectional communication framework is used to communicate charging information, then comprehensive charging control is achieved, but storage space requirements increase on both transmitting and receiving devices

Engineering Contradiction:

Improvecharging controlVSAvoidstorage space

Core Design Contradiction:

Ease of operationVSQuantity of substance

Solution Approach 1:

The patent extracts only the essential charging information transmission function, using unidirectional advertisements from the receiving device that contain necessary charging parameters, eliminating the need for comprehensive bidirectional communication protocols

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The receiving device autonomously transmits its charging information through unidirectional advertisements without requiring a communication handshake or protocol exchange, allowing the transmitting device to determine and adjust charging needs based on received advertisement data

Inventive Principle:

Principle #25Self-service

3Reliability

If communication channel establishment is required for wireless power transmission, then secure verification is achieved, but device complexity and storage requirements increase

Engineering Contradiction:

Improvedevice verificationVSAvoidcommunication framework

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the verification function from the communication channel establishment process by using unidirectional advertisements that contain device identification and charging parameters, eliminating the need for complex handshake protocols while maintaining verification security

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical communication channel establishment process with a simpler unidirectional advertisement system where the receiving device transmits its information and the transmitting device verifies and adjusts charging based on received data

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12224599B2Systems and methods for secure wireless transmission of power using unidirectional communication signals from a wireless-power-receiving device

Publication Date: 2025.02.11 ENERGOUS CORP

AI summary

An exemplary embodiment of secure wireless transmission of power using unidirectional communication signals from a wireless-power-receiving device. The method includes, receiving, from a wireless-power-transmitting device that includes a first communications radio, a first wireless-power-transmission signal at a wireless-power-receiving device that includes a second communications radio. In response to receiving the first wireless-power-transmission signal: broadcasting, via the second communications radio of the wireless-power-receiving device and without establishing a communications channel between the first and second communications radios, a data packet, the data packet including information identifying (i) at least one power requirement of a power source of the wireless-power-receiving device (ii) an amount of power received by the wireless-power-receiving device from the first wireless-power-transmission signal. After broadcasting the data packet, receiving, from the wireless-power-transmitting device, additional wireless-power-transmission signals at the wireless-power-receiving device, wherein the wireless-power-transmitting device transmits each of the additional wireless-power-transmission signals using a predetermined sequence of different transmission characteristics.