Touch Screen Writing Pressure Adjustment UI
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Solution Overview
Problem
Existing touch screen technologies face challenges in accurately detecting writing pressure values, especially when using passive methods, as they often require complex pen structures and frequent battery charging, and struggle to differentiate between writing and non-writing forces, leading to incorrect pressure measurements.
Innovation Solution
An electronic device with a touch sensor and processor that includes a writing pressure adjustment user interface (UI) to set and transmit writing pressure values, allowing for the display of touch trajectories based on adjusted pressure settings, enabling accurate pressure detection and measurement even with passive input devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a writing pressure sensor is included in an electronic pen itself, then writing pressure can be measured, but device complexity increases and battery charging is required frequently
Solution Approach 1:
The patent extracts the writing pressure measurement function from the electronic pen and relocates it to the display device. The display device now performs the measurement using its existing touch screen hardware, eliminating the need for sensors in the pen itself. This resolves the contradiction by maintaining measurement capability while simplifying the pen structure and removing battery requirements.
Solution Approach 2:
The patent makes the display device's touch screen perform multiple functions: it serves as both the display interface and the writing pressure detection sensor. By utilizing the existing touch screen capabilities for pressure measurement, the system avoids adding dedicated sensors to the pen, thereby reducing pen complexity while maintaining measurement functionality.
2Measurement precision
If a piezoelectric sensor is put into a panel, then writing pressure can be detected, but it is difficult to detect small forces and correct measurement varies by location
Solution Approach 1:
The patent merges the touch input detection function with the writing pressure detection function. By combining these functions and processing them together through the same software algorithm, the system ensures consistent and reliable measurement across different locations on the display, eliminating the location-dependent variability inherent in separate piezoelectric sensor implementations.
3Adaptability or versatility
If a different force other than a device for measuring writing pressure is additionally transmitted, then communication can occur, but correct writing pressure measurement becomes difficult
Solution Approach 1:
The patent implements a dynamic measurement approach where the system adapts to different input scenarios. The software algorithm dynamically determines whether the applied force is from a writing instrument or another object based on characteristics like pressure magnitude, contact area, and temporal patterns. This dynamic adaptation allows the system to maintain accurate writing pressure measurement even when other forces are applied to the screen.
Data Source
AI summary
An electronic device for receiving and displaying an application screen from an external device, includes: a display including a touch sensor; a communication interface; and at least one processor configured to: control the display to display a first application screen received from the external device through the communication interface and a writing pressure adjustment user interface (UI), transmit, to the external device, information on a writing pressure value set through the writing pressure adjustment UI and a touch input identified through the touch sensor, receive, from the external device through the communication interface, a second application screen including a touch trajectory identified based on the information on the writing pressure value and the touch input, and control the display to display the received second application screen.