Video Projection Player Negotiation for HD Casting Control

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Solution Overview

Problem

Existing projection technologies require manual installation and operation of specific players on both source and destination devices to achieve high-definition and feature-rich projection experiences, leading to complex user interactions and reduced efficiency.

Innovation Solution

A method that dynamically adjusts projection parameters based on the capabilities of both source and destination devices, allowing automatic negotiation and installation of compatible players to facilitate seamless high-definition and feature-rich projections without manual user intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual installation and operation of specific players on both source and destination devices is required to achieve high-definition projection, then projection quality is improved, but user operation complexity increases

Engineering Contradiction:
Improveprojection qualityVSAvoiduser operation complexity
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The system performs automatic player negotiation between source and destination devices, where the devices themselves determine compatible players without manual user intervention. The destination device autonomously selects and configures the appropriate player based on the projected content type and device capabilities, eliminating the need for users to manually install and configure players on both devices.

Inventive Principle:
Principle #25Self-service

2Manufacturing precision

If specific players are pre-installed and started on destination device to achieve high-definition projection, then projection experience is improved, but device complexity increases

Engineering Contradiction:
Improveprojection experienceVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system dynamically negotiates and selects players based on real-time conditions including content type, destination device capabilities, and available players. Rather than requiring fixed pre-installation of specific players, the system adapts player selection during the projection process, allowing the destination device to flexibly choose from multiple available players based on current requirements.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If automatic player negotiation is implemented, then ease of operation is improved, but loss of information about player compatibility increases

Engineering Contradiction:
Improveease of useVSAvoidplayer compatibility information
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The automatic player negotiation process includes feedback mechanisms where the destination device evaluates available players against the projected content requirements and device capabilities. The system exchanges capability information between source and destination devices, uses this feedback to determine compatibility, and selects the most appropriate player based on this information exchange.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS20260059159A1Projection method and device
Publication Date: 2026.02.26 HUAWEI TECH CO LTD
  • US20260059159A1 patent drawing
  • US20260059159A1 patent drawing
  • US20260059159A1 patent drawing

AI summary

This application provides a projection method and a device, and relates to the field of terminal technologies. A source device and a projection device (a destination device) negotiate projection information, to improve resolution and operability of projection. The method includes: determining a first player that needs to be used by a first device when a second device initiates video projection; receiving a playing instruction sent by the second device; and playing a projected video by using the first player according to the playing instruction. The playing instruction is sent as triggered by an operation performed on a projection control of a second player of the second device, and the playing instruction instructs the first device to play the projected video by using the first player. The first player is a player that is supported by the first device and that is used in conjunction with the second player.