Screen Projection Coordinate Mapping via Proportional Transformation
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Solution Overview
Problem
Screen projection synchronization is low due to differences in screen shape and size between the source device and the client, leading to asynchronous content display and degraded user experience.
Innovation Solution
A method and device that acquire touch information including the touch type, coordinate position, and screen rotation direction from a second device, and determine a target position on the first device for accurate touch operation based on the rotation direction, enabling synchronized control by converting the coordinate position using screen size and rotation information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the client sends touch position and touch type to the source device for reverse control, then the source device can perform control operations, but the control position is inaccurate when screens have different shapes or resolutions, resulting in asynchronous content display
Solution Approach 1:
The patent transforms the touch position parameters from absolute coordinates to relative proportions by introducing width proportion and height proportion calculations. This parameter transformation allows the touch position to be accurately mapped between screens of different sizes and resolutions, resolving the inaccuracy issue while maintaining reverse control capability
Solution Approach 2:
The patent introduces an intermediary coordinate transformation process that acts as a mediator between the client's touch coordinates and the source device's screen coordinates. By calculating width proportion and height proportion as intermediate values, the system achieves accurate position mapping across different screen specifications
2Adaptability or versatility
If the source device and client have different screen sizes and resolutions, then each device can display content optimally for its hardware, but the touch operation mapping between devices becomes inaccurate
Solution Approach 1:
The patent changes the coordinate representation from absolute pixel values to relative proportions (width proportion and height proportion). This parameter transformation enables the system to adapt to different screen sizes and resolutions while maintaining accurate coordinate mapping, as proportions remain consistent regardless of absolute dimensions
Solution Approach 2:
The patent creates a universal coordinate mapping mechanism that works across devices with different screen specifications. By using proportional coordinates instead of absolute coordinates, the same mapping algorithm can accurately translate touch positions between any two screens regardless of their size or resolution differences
Data Source
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AI summary
Embodiments of the present disclosure provide a screen projection control method and device, and an electronic device. The method includes: acquiring touch information sent by a second device, where the touch information includes a touch type, a coordinate position of a touch point on a screen of the second device, and a screen rotation direction of the second device, the screen of the second device and a screen of a first device display a same interface; and determining, according to the screen rotation direction of the second device, a target position on the screen of the first device corresponding to the coordinate position of the touch point, where the target position is a position for performing a touch operation corresponding to the touch type. Accurate mapping of the coordinate position of the touch point is achieved, and the first device is enabled to accurately perform the touch operation, and thus the first device is enabled to correspondingly control its displayed content according to the touch operation, so that the content displayed by a source device and a client is synchronous, thereby improving the synchronization of screen projection and improving the user experience.