Active Pen Recognition via Wireless Data Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices are unable to perform accurate pen recognition, limiting their ability to process simultaneous inputs from multiple pens and providing an inconvenient user experience for writing and tracing tasks.
Innovation Solution
A touch-sensing system and active pen that transmit and receive reliable information through a wireless communication link, using a panel with touch electrodes and a touch controller to distinguish and process multiple pens, enabling accurate and rapid pen recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional touch sensing is used, then simple touch input is supported, but accurate pen recognition and multi-pen processing are not achieved
Solution Approach 1:
The patent segments the touch sensing process into distinct phases: finger touch detection phase and pen recognition phase. During the finger touch phase, only basic touch sensing is performed. When a pen is detected, the system transitions to the pen recognition phase where pen identification information is extracted and processed separately. This segmentation allows accurate pen recognition without requiring the entire system to be constantly configured for complex pen processing.
Solution Approach 2:
The patent implements preliminary action by pre-configuring the touch sensing circuit to detect pen-specific characteristics during the initial touch detection phase. The system prepares pen recognition data structures and identifies pen presence before full pen recognition processing begins, allowing for smoother transitions and more accurate pen identification without waiting for complete pen contact establishment.
2Adaptability or versatility
If multiple pens are to be simultaneously recognized, then pen identification capability is improved, but processing complexity and data management difficulty increase
Solution Approach 1:
The patent assigns unique identification information to each pen and segments the data processing by creating separate data streams for each detected pen. The touch controller maintains individual pen data structures that track each pen's position, pressure, and identification information independently, allowing simultaneous multi-pen processing without data confusion or processing bottlenecks.
Solution Approach 2:
The patent uses wireless communication to transmit pen data from the active pen to the display device, creating a digital copy of pen information that can be processed independently. This copying mechanism allows the system to handle multiple pens simultaneously by receiving and processing separate data transmissions from each pen without requiring complex physical sensor arrays for each pen.
3Measurement precision
If wireless communication is added for pen data transmission, then pen recognition accuracy is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent implements a wireless communication module that serves multiple functions: transmitting pen identification information, conveying touch position data, reporting pressure information, and enabling pen recognition. By making the wireless module multi-functional, the patent avoids adding separate dedicated components for each function, thereby reducing overall manufacturing complexity while maintaining accurate pen data transmission.
Data Source
AI summary
Disclosed are a touch-sensing system, a display device, an active pen, and a pen recognition method which can perform rapid and accurate pen recognition as the active pen provides pen identification information to the display device through a predetermined path, and which can also simultaneously process pen inputs through many active pens by distinguishably recognizing the many pens.