Electronic Device Projection Method for Seamless Screen Mirroring

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Solution Overview

Problem

When projecting content from a mobile device with a different screen resolution to a television, the display often results in black borders due to mismatched screen resolution ratios, leading to a poor user experience and suboptimal screen utilization.

Innovation Solution

The method involves adjusting the screen resolution of the mobile device to match the television's resolution ratio by adjusting the number of pixels in either the horizontal or vertical direction, ensuring the screen resolution ratios of both devices are equal, allowing for seamless and full-screen projection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If screen mirroring is performed without adjusting resolution, then projection function is simple to implement, but black borders appear and screen utilization is poor

Engineering Contradiction:
Improvescreen utilizationVSAvoidprojection processing complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by adjusting the screen resolution of the projection source device to match the resolution ratio of the receiving device before performing screen mirroring. This pre-adjustment ensures that the content fits the target screen properly, eliminating black borders and improving screen utilization without adding complex processing during the projection itself.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements parameter changes by modifying the screen resolution parameters (width and height pixel values) of the projection source device. By changing these parameters to match the resolution ratio of the receiving device, the system achieves better adaptability and screen utilization while maintaining simple projection functionality.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If screen resolution is adjusted to match resolution ratio, then display effect is improved, but additional processing steps are required

Engineering Contradiction:
Improveprojection display precisionVSAvoidresolution adjustment time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The resolution adjustment is performed as a preliminary step before screen mirroring begins. By completing the resolution matching in advance, the system ensures high display precision during projection without incurring continuous processing delays. The one-time adjustment eliminates the need for ongoing resolution conversions, minimizing time loss.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If full-screen projection is achieved through resolution adjustment, then user projection experience is improved, but device operation complexity increases

Engineering Contradiction:
Improveprojection experienceVSAvoidresolution adjustment operation
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent implements self-service by having the system automatically detect the resolution parameters of both the projection source and receiving devices, then autonomously adjust the source resolution to match the target resolution ratio. This automated process eliminates the need for users to manually configure complex resolution settings, improving projection experience while keeping operations simple.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12159607B2Electronic device projection method, medium thereof, and electronic device
Publication Date: 2024.12.03 HUAWEI TECH CO LTD
  • US12159607B2 patent drawing
  • US12159607B2 patent drawing
  • US12159607B2 patent drawing

AI summary

An electronic device projection method is provided. The projection method is applied to a first electronic device, and the first electronic device is communicatively connected to a second electronic device. The projection method includes: obtaining a screen resolution of the first electronic device; obtaining a screen resolution of the second electronic device, where a screen resolution ratio of the second electronic device is not equal to a screen resolution ratio of the first electronic device; adjusting the screen resolution of the first electronic device, to enable the screen resolution ratio of the first electronic device to be equal to the screen resolution ratio of the second electronic device; and collecting screen data of the first electronic device, and sending the screen data to the second electronic device, to display screen content of the first electronic device on the second electronic device.