Cross-device Information Display via Trusted Device Selection

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Solution Overview

Problem

In cross-device information display scenarios, existing technologies often project data to the wrong device, leading to inaccuracies in target device selection and user disturbance.

Innovation Solution

A method and device where a mobile terminal sends real-time target information only to trusted devices, allowing them to display the information, with features like unique identifier recording, notification messaging, and display settings to ensure accurate synchronization and user convenience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If screen projection is used to synchronize data to display devices, then data synchronization capability is improved, but the risk of projecting data to the wrong device increases

Engineering Contradiction:

Improvedata synchronization capabilityVSAvoidtarget device selection accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The mobile terminal establishes a trusted device relationship with the display device before data synchronization. The display device sends a trusted device indication to the mobile terminal in advance, allowing the terminal to pre-configure and recognize the trusted relationship, thereby preventing wrong device selection during actual data projection.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If real-time target information is sent to multiple devices, then data synchronization coverage is improved, but user disturbance increases due to wrong device selections

Engineering Contradiction:

Improvedata synchronization coverageVSAvoiduser disturbance

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The mobile terminal acts as an intermediary that filters and selects which display devices receive real-time target information. Based on the trusted device indication, the terminal selectively sends data only to authorized devices, preventing unnecessary data transmission to untrusted devices and thereby reducing user disturbance.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Loss of energy

If display devices operate in black screen state to save energy, then energy consumption is reduced, but data synchronization capability is limited

Engineering Contradiction:

Improveenergy consumptionVSAvoiddata synchronization capability

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The display device autonomously determines and communicates its trusted device status to the mobile terminal even in black screen state. The trusted device indication mechanism allows the display device to self-identify and maintain its trusted relationship without requiring the display to be actively visible, thus enabling energy-saving operation while preserving data synchronization capability.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS11635933B2Cross-device information display method and device, and storage medium

Publication Date: 2023.04.25 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A cross-device information display method and device, and a storage medium are provided. The method includes that a mobile terminal sends, real-time target information of the mobile terminal to a target device to allow the target device to display the target information in response to determining that the target device is a trusted device of the mobile terminal.