Touch Panel Signal Routing for Faster Display Response
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Solution Overview
Problem
Involvement of the host processor in data processing on a touch panel display leads to technical or operational inconveniences.
Innovation Solution
An input system with a touch panel display that includes a sensor controller, host processor, display controller, and switchable signal paths, allowing direct communication between the sensor controller and display controller without passing through the host processor, enabling two output modes to optimize data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the host processor processes data signals from the sensor controller, then data processing capability is improved, but time response deteriorates due to processing delays
Solution Approach 1:
The patent divides the signal processing function into two separate paths: one through the host processor for complex data processing, and another direct path from the sensor controller to the display controller for time-critical position information. This segmentation allows different types of data to be processed through appropriate channels, resolving the contradiction between processing capability and response speed.
Solution Approach 2:
The display controller acts as an intermediary that receives position information directly from the sensor controller without requiring host processor intervention. This intermediary approach enables fast response for display updates while the host processor handles more complex processing tasks separately, thus resolving the speed-capability contradiction.
2Manufacturing precision
If the host processor is involved in data processing, then processing thoroughness is improved, but operational convenience deteriorates due to user confusion during rapid movements
Solution Approach 1:
The patent separates position data processing from other data processing tasks by providing a direct signal path from the sensor controller to the display controller. This segmentation ensures that position information is processed and displayed immediately without being delayed or confused by other processing operations, improving user experience during rapid movements while maintaining thorough processing for other data through the host processor.
3Device complexity
If all signals pass through the host processor, then system control is simplified, but device complexity increases due to additional signal paths required
Solution Approach 1:
The patent implements a dynamic signal routing system where the sensor controller can selectively output signals to different destinations (host processor, display controller, or both) based on the type of information being transmitted. This dynamic approach allows the system to maintain simplicity for time-critical operations while preserving the option for thorough processing when needed, effectively managing the complexity-control trade-off.
Data Source
AI summary
An input system is provided which is capable of mitigating certain inconveniences that may arise due to data processing performed by a host processor. The input system includes a first signal path, a second signal path, and a switch section. The first signal path is used for transmitting a signal from a sensor controller to a display controller through the host processor. The second signal path is used for transmitting a signal from the sensor controller to the display controller without passing the signal through the host processor. The switch section is configured to be able to switch between the first signal path and the second signal path.