Touchscreen Display Interface for Non-Touch Host Compatibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Computers without native touchscreen support face challenges in utilizing touchscreen functionality, often resulting in partial or ineffective input and output due to misalignment and operational incompatibilities.
Innovation Solution
A touchscreen display system with separate communication interfaces for visual display and touch input, enabling emulation of a fully functional touchscreen by converting touch inputs into pointing device signals and sending them to the host device using existing communication channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touchscreen display is connected to a host device without native touchscreen support, then the display can show visual output, but the touch input functionality is ineffective or misaligned
Solution Approach 1:
The patent introduces an intermediary layer (software driver or translation layer) that converts touchscreen input signals into pointing device signals that the host device can understand. This mediator translates touch coordinates into mouse cursor movements, enabling communication between incompatible devices while maintaining input accuracy through coordinate mapping and calibration
2Adaptability or versatility
If separate communication interfaces are used for visual display and touch input, then compatibility with non-touchscreen host devices is achieved, but device complexity increases
Solution Approach 1:
The patent makes the communication interface universal by designing it to handle multiple functions: video output signals, touch input signals, and pointing device signals all through standardized interfaces. The interface can adapt its behavior based on the host device capabilities, providing full touchscreen functionality when supported and degraded pointing device functionality when not supported, thereby reducing apparent complexity
3Adaptability or versatility
If touchscreen functionality is emulated on a non-touchscreen host device, then full touchscreen features are available, but system resource consumption increases
Solution Approach 1:
The patent implements partial emulation by providing full touchscreen functionality only when the host device lacks native support, while allowing native touchscreen operation when supported. The emulation layer can be selectively activated or deactivated based on host capabilities, and the coordinate transformation and signal conversion are performed efficiently with minimal processing overhead through optimized algorithms
Data Source
AI summary
A touchscreen display system (1) for use with a host device (15) and configured to generate visual representations (5) as an output and to receive touch input (9) from a user. The touchscreen display system (1) comprises a graphical display (3) to generate (110) a visual representation (5); and a first communication interface (11) to receive (105) visual display output signals (13) from a host device (15). The touchscreen display system (1) also comprises: a touch panel sensor (7) at the graphical display (3) to receive a touch input (9) of a user (10); and at least one processor (16) configured to: determine (120) one or more locations of the touch input (9) relative to the graphical display (3); and generate (130) pointing device input signals (19) based on the one or more locations of the touch input (9). A second communication interface (17) sends (135) the pointing device input signals (19) to the host device (15), where the first communication interface (11) is separate to the second communication interface (17).