Multi-Screen Interface Projection for Secure Cross-Device Control

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Solution Overview

Problem

Existing technologies for cross-device interaction between mobile devices and computers lack efficient and secure methods for establishing connections, file sharing, and seamless user experience, particularly in terms of interface projection and control.

Innovation Solution

A multi-screen interaction method and apparatus that enables direct wireless connections between devices using broadcast information or QR code scanning, allowing for secure and automatic account linking, interface projection with responsive control, and intelligent file transfer through drag-and-drop operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional multi-screen interaction technologies are used, then device connection is established, but user experience is less intuitive and interaction efficiency is reduced

Engineering Contradiction:
Improveuser experienceVSAvoidinteraction efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The patent projects the interface of a second terminal onto the display screen of a first terminal, creating a visual copy of the remote interface. This allows users to see and interact with the second terminal's interface elements (such as file lists, application windows, and control elements) directly on the first terminal's larger or more convenient display, making interactions more intuitive and efficient without requiring constant switching between devices

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent introduces a projection mechanism as an intermediary between the first terminal and second terminal. The projected interface serves as a mediator that translates the second terminal's interface elements into a form that can be directly manipulated on the first terminal, enabling seamless cross-device operations without requiring users to physically handle both devices simultaneously

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If interface projection is implemented, then interaction control is improved, but system complexity increases

Engineering Contradiction:
Improveinteraction controlVSAvoidsystem complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent implements a universal interaction mechanism where the first terminal can project and interact with various types of interfaces from the second terminal (file management interfaces, application interfaces, system settings interfaces, etc.). This multi-functional approach consolidates multiple specific interaction scenarios into a single unified framework, reducing the need for separate complex handling logic for each interface type and thereby managing system complexity more effectively

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3872611B1Multi-screen interaction method and apparatus, and storage medium
Publication Date: 2026.04.29 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • EP3872611B1 patent drawingFigure 1~2
  • EP3872611B1 patent drawingFigure 3
  • EP3872611B1 patent drawingFigure 4~5

AI summary

Provided are a multi-screen interaction method and apparatus, and a storage medium. The method includes that: a first interface of a second terminal is projected on a display screen of a first terminal; detection is performed on a first operation acting on the first interface; and responsive to the first operation on a first object in the first interface is detected, the first operation on the first object is responded in the first terminal. Through the method, the interaction between different terminals is enhanced.