Home Appliance WiFi Pairing Using Appliance-Specific Initial Codes

Solution Overview

Problem

Home appliances are vulnerable to damage from malicious control instructions due to the lack of secure communication protocols between control terminals and home appliances.

Innovation Solution

A network configuration terminal generates an initial code for home appliances, enabling legitimate control terminals to communicate with their WIFI modules using this code, thereby preventing unauthorized control instructions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If home appliances use open communication protocols allowing any control terminal to connect, then ease of operation is improved, but security against malicious control instructions deteriorates

Engineering Contradiction:

Improveease of controlVSAvoidmalicious control instructions

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by pre-establishing a unique initial code for each home appliance before it is deployed. This initial code is generated in advance and stored in the appliance's memory, creating a security barrier before any control terminal attempts to connect. When a control terminal wants to control the appliance, it must first obtain and verify this pre-established initial code, thereby preventing unauthorized or malicious control before it can occur.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism - the initial code - that mediates between control terminals and home appliances. This initial code acts as a security gatekeeper that must be presented and verified before any control communication can occur. The control terminal cannot directly control the appliance without this intermediary verification step, thus blocking malicious instructions while allowing legitimate control.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If home appliances accept control from any terminal, then adaptability is improved, but reliability against unauthorized control deteriorates

Engineering Contradiction:

Improvecontrol compatibilityVSAvoidsecurity against malicious control

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-establishing a unique initial code for each home appliance before it is deployed. This initial code is generated in advance and stored in the appliance's memory, creating a security barrier before any control terminal attempts to connect. When a control terminal wants to control the appliance, it must first obtain and verify this pre-established initial code, thereby preventing unauthorized or malicious control before it can occur.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies local quality by making each home appliance have its own unique initial code that is specific to that particular appliance. This local uniqueness ensures that the security mechanism is tailored to each individual appliance, allowing different appliances to be controlled by different authorized terminals while maintaining security. Each appliance's control authority is locally determined by its unique initial code rather than using a universal access method.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12634165B2Network configuration terminal, network configuration method for home appliance, and computer-readable storage medium

Publication Date: 2026.05.19 GD MIDEA AIR CONDITIONING EQUIP CO LTD

AI summary

A home appliance network configuration method includes sending, by a network configuration terminal, a generation instruction of generating an initial code to a target home appliance, and acquiring, based on the generation instruction, the initial code generated by the target home appliance, for a control terminal to communicate with a WIFI module of the target home appliance based on the initial code.