Bus-Based Household Gateway Subsystem for Centralized Appliance Control
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Solution Overview
Problem
Existing household gateway systems face challenges in managing and securing networked appliances due to complex NAT processes, high computational overhead, and inconvenient user operation, particularly with separate gateways for each device and potential security threats from loose authentication.
Innovation Solution
A bus-based household gateway subsystem with a host device and user operation device connected via digital buses, utilizing power lines and wireless interfaces for communication, where the host device manages all appliances and implements security authentication, making the internal network invisible to external networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If NAT process is used for household appliance communication, then external network access is enabled, but computational overhead and cost increase
Solution Approach 1:
The patent extracts the NAT process and TCP/IP stack from individual household appliances and concentrates them in the gateway device. This allows appliances to communicate internally without full networking stacks, reducing their computational overhead while maintaining external network access through the gateway's NAT capability.
Solution Approach 2:
The gateway acts as an intermediary between the internal household appliance network and the external Internet. It handles all NAT translations and complex protocol conversions, allowing appliances to use simple communication protocols internally while still accessing external networks through the gateway's mediation.
2Reliability
If strict security authentication is performed on control instructions, then security is improved, but calculation overhead increases
Solution Approach 1:
The patent extracts the security authentication function from individual household appliances and concentrates it in the gateway device. The gateway performs all security verification on control instructions from mobile devices, allowing appliances to receive authenticated commands without performing complex authentication themselves, thus maintaining security while reducing appliance computational overhead.
3Adaptability or versatility
If separate gateways are used for each household appliance, then device control capability is improved, but system complexity increases
Solution Approach 1:
The patent merges multiple gateway functions into a single centralized gateway device that can control all household appliances. Instead of having separate gateways for each appliance, one gateway provides universal control capabilities for TV, audio equipment, lighting, and other devices, reducing system complexity while maintaining comprehensive control functionality.
4Adaptability or versatility
If LAN communication mode is used, then network connectivity is established, but information security and management are worsened
Solution Approach 1:
The gateway serves as an intermediary that controls all communication between the internal appliance network and external networks. It implements security policies, filters traffic, and manages connections, allowing LAN connectivity for appliances while preventing direct external access and maintaining information security through centralized control.
Data Source
AI summary
A household gateway subsystem, the subsystem includes: a host device, for connecting an external network with the interior of the household, and controlling various information appliances in the household based on a digital bus; a user operating device, for communicating with the host device via a digital bus interface, and providing various user operating interfaces and control units. A digital household system is also provided, the system includes: a household gateway subsystem, connected with an external communicating network by IP access; the household gateway subsystem includes: a host device; a user operating device, for communicating with the host device via a digital bus interface; a number of wireless signal transceivers, connected with the host device of the household gateway subsystem.