Multi-Screen Interface Projection for Cross-Device File Transfer

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing multi-device interaction technologies lack efficient methods for seamless and intelligent interaction between devices, particularly in scenarios where user operations on one device control another, leading to suboptimal user experience and inefficient file transfer.

Innovation Solution

A multi-screen interaction method and apparatus that projects a second terminal's interface onto a first terminal, allowing the first terminal to detect and respond to user operations, enabling direct control and file transfer between devices through operations like dragging and copying, with support for wired and wireless connections, including USB, Bluetooth, and NFC.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional multi-device interaction technologies are used, then device connection is established, but user experience is suboptimal and interaction efficiency is low

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

Solution Approach 1:

The patent projects the interface of a second terminal onto a first terminal, creating a visual copy of the remote device's interface. This allows users to see and interact with the second terminal's interface on the larger first terminal screen, enabling seamless control without switching devices. The copying principle resolves the contradiction by maintaining operational simplicity while significantly improving interaction efficiency through centralized control.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The first terminal acts as an intermediary device between the user and the second terminal. By projecting the second terminal's interface onto itself and detecting operations on this projected interface, the first terminal mediates control operations, translating user actions into commands for the second terminal. This intermediary role improves both ease of operation and interaction efficiency by providing a unified control point.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If manual operations on both devices are required, then device control is achieved, but file transfer efficiency is reduced

Engineering Contradiction:
Improvefile transfer efficiencyVSAvoidmanual operations
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

By projecting the second terminal's interface onto the first terminal, the patent enables users to perform file operations on the projected interface using the first terminal's input devices. This copying approach eliminates the need for manual operations on both devices simultaneously, as all control can be performed from the first terminal, thereby improving file transfer efficiency while maintaining operational simplicity.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The system enables self-service operation where the first terminal automatically detects operations performed on the projected interface and translates them into appropriate commands for the second terminal. This self-service mechanism reduces manual intervention requirements and improves file transfer efficiency by automating the coordination between devices.

Inventive Principle:
Principle #25Self-service

3Extent of automation

If interface projection and operation detection are implemented, then interaction intelligence is improved, but device complexity increases

Engineering Contradiction:
Improveinteraction intelligenceVSAvoidsystem complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The first terminal is designed to perform multiple functions: it serves as both the user interface device and the control mediator. By projecting the second terminal's interface onto itself and detecting operations on this projected interface, the first terminal universalizes its role, handling both display and control functions. This multi-functionality improves interaction intelligence without significantly increasing overall system complexity, as it utilizes existing terminal capabilities.

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

Solution Approach 2:

The patent merges the functions of interface display and operation detection into a single device (the first terminal). By combining these functions that could be distributed across multiple devices, the system improves interaction intelligence through centralized processing while actually reducing overall system complexity. The merging principle allows the first terminal to handle both projection and detection tasks, simplifying the architectural design.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4730817A2Multi-screen interaction method and apparatus, and storage medium
Publication Date: 2026.04.22 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • EP4730817A2 patent drawingFigure 1~2
  • EP4730817A2 patent drawingFigure 3
  • EP4730817A2 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.