Portable Device Dynamic Touch Interface for Projected Screens
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Solution Overview
Problem
Conventional portable communications devices with image projecting capabilities face complexity in controlling projected screens during presentations due to restricted key layouts and definitions, limiting flexibility and usability.
Innovation Solution
A method and device that utilize an image projecting unit and a touch control display unit to dynamically generate operation interfaces tailored to different application programs, allowing users to interact directly with projected screens through customizable interfaces, enabling operation in both image projecting and interactive modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed key definitions are used in portable communications device, then device structure is simple, but control flexibility for projected screens is insufficient
Solution Approach 1:
The patent implements dynamic key definition where key functions change based on the running application program. The control unit dynamically assigns different definitions to keys depending on which application is active, allowing the same physical keys to serve multiple purposes across different contexts without requiring additional hardware
Solution Approach 2:
The patent makes the keys universal by enabling them to perform different functions based on the application context. The same set of keys can control presentation navigation, application functions, or other operations depending on what application is currently running, eliminating the need for application-specific key layouts
2Adaptability or versatility
If more keys are added to expand control range, then control capability is improved, but device size increases
Solution Approach 1:
The system dynamically adjusts key functionality based on application context rather than adding more physical keys. The control unit interprets key inputs differently depending on which application is running, effectively expanding control range while maintaining the same compact key layout
3Ease of operation
If fixed key layout is used, then manufacturing is simple, but user convenience for presentations is reduced
Solution Approach 1:
The system provides dynamic key definitions that adapt to the current application context. During presentations, keys can be configured for presentation navigation; during other applications, the same keys provide appropriate controls for those applications, enhancing user convenience without requiring physical reconfiguration
Solution Approach 2:
The patent replaces the mechanical approach of having different physical key layouts for different applications with a software-based solution. The control unit dynamically interprets key inputs based on the running application, substituting physical reconfiguration with intelligent software control
Data Source
AI summary
A method of controlling a portable communications device with an image projecting capability includes: controlling an image projecting unit to project an output screen of an application program, and controlling a touch control display unit to display an operation interface set up according to characteristics of the application program; and in response to actuation of the operation interface, controlling the image projecting unit such that the output screen projected thereby is a result of interaction between the operation interface and the application program.