Dynamic Sensor Granularity for Touch Panel Power Optimization
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Solution Overview
Problem
Existing multi-touch enabled devices face inefficiencies in power usage due to uniform sensor granularity, which is not dynamically adjustable to meet varying application needs, leading to excessive power consumption, especially in devices with large displays.
Innovation Solution
The implementation of an event sensing panel that can dynamically change its granularity based on operational needs by selectively activating or deactivating stimulus and data lines, allowing for higher resolution where necessary and lower resolution where power savings are required, thereby optimizing power usage and input resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform sensor granularity is used across the entire panel, then touch event detection coverage is ensured, but power consumption increases
Solution Approach 1:
The patent applies local quality by dividing the touch panel into multiple zones with different granularities. High-granularity zones are used in regions requiring precise touch detection (such as where interactive elements are likely to appear), while low-granularity zones are used in regions where precise detection is less critical. This allows the system to maintain reliable touch event detection coverage across the entire panel while significantly reducing power consumption by activating fewer sensors in low-granularity zones.
Solution Approach 2:
The patent implements dynamics by making the sensor granularity configurable and changeable based on operational needs. The system can dynamically adjust which zones operate at high or low granularity depending on the current application state, displayed content, and user interaction patterns. This dynamic adaptation allows the panel to optimize power consumption in real-time while maintaining touch detection reliability where needed.
2Measurement precision
If high sensor granularity is used across the entire panel, then input resolution is improved, but power consumption increases
Solution Approach 1:
The patent applies local quality by assigning different granularity levels to different spatial zones of the panel. Zones requiring high input resolution (such as areas displaying small interactive elements or requiring precise touch control) operate at high granularity, while other zones operate at lower granularity. This ensures high measurement precision is maintained only where necessary, thereby reducing overall power consumption.
Solution Approach 2:
The patent implements partial action by activating high-granularity sensing only in specific zones and at specific times rather than across the entire panel continuously. The system determines which zones require high-resolution touch detection based on current display content and application state, activating high-granularity modes only partially (in selected zones) and only when needed, thus reducing power consumption while maintaining input resolution where required.
3Use of energy by moving object
If low sensor granularity is used, then power consumption is reduced, but touch event detection accuracy decreases
Solution Approach 1:
The patent applies local quality by creating a heterogeneous granularity structure where different zones operate at different resolution levels. Low-granularity zones reduce power consumption, while high-granularity zones maintain touch event detection accuracy in regions where it is critical. The system intelligently assigns zones to appropriate granularity levels based on their functional requirements.
Solution Approach 2:
The patent implements dynamics by allowing zones to transition between granularity levels based on real-time requirements. When an application displays content requiring precise touch interaction in a previously low-granularity zone, the system can dynamically upgrade that zone's granularity to maintain detection accuracy. This dynamic adjustment ensures power consumption is minimized while touch event detection accuracy is preserved when needed.
4Device complexity
If fixed granularity is used, then device complexity is reduced, but adaptability to different application needs decreases
Solution Approach 1:
The patent applies segmentation by dividing the touch panel into multiple independent zones, each capable of operating at different granularity levels. This segmentation allows the system to manage complexity through modular zone configuration while providing adaptability - each zone can be independently configured based on its specific requirements, enabling the system to adapt to different application needs without requiring complete redesign of the entire sensor array.
Solution Approach 2:
The patent implements dynamics by making the granularity configuration changeable during operation. The system can adapt zone granularities in response to different applications, display content, and user interactions, providing versatility without requiring complex hardware reconfiguration. This dynamic software-controlled adaptation maintains relatively simple device architecture while achieving high adaptability to varying application requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables efficient power management by adjusting sensor density in real-time, ensuring high resolution where needed while reducing power consumption, thus extending battery life and improving user interaction without compromising touch event detection accuracy.
Implementation Method 1
capacitance-based touch sensing
Data Source
AI summary
This relates to an event sensing device that includes an event sensing panel and is able to dynamically change the granularity of the panel according to present needs. Thus, the granularity of the panel can differ at different times of operation. Furthermore, the granularity of specific areas of the panel can also be dynamically changed, so that different areas feature different granularities at a given time. This also relates to panels that feature different inherent granularities in different portions thereof. These panels can be designed, for example, by placing more stimulus and/or data lines in different portions of the panel, thus ensuring different densities of pixels in the different portions. Optionally, these embodiments can also include the dynamic granularity changing features noted above.