A Noise-Immune Stylus Analog Front-End Using Adjustable Frequency Modulation and LinearInterpolating Data Reconstruction for Both Electrically Coupled Resonance and Active Styluses

📋 论文概要

本文提出了一种抗噪声的手写笔模拟前端，采用可调频率调制和线性插值数据重建技术，解决了移动设备中手写笔在噪声环境下信号检测的难题。通过比较不同手写笔系统，该设计提升了信噪比和抗干扰能力。

💡 主要创新点

• 提出可调频率调制技术，动态调整调制频率以抑制特定噪声干扰。
• 采用线性插值数据重建方法，恢复因噪声丢失的信号信息，提高检测精度。
• 整体架构针对手写笔应用优化，在保持低功耗的同时实现高抗噪性能。

🏷 关键词

📄 原文摘要

Hyung-Jong Ko1, San-Ho Byun1, Jin-Chul Lee1, Yong-Hoon Lee1, Yeong-Cheol Rhee1, Yoon-Kyung Choi1, Byung-Hoon Kang2, Chang-Byung Park2, Sungsoo Park2, Taesung Kim2 Samsung Electronics, Hwaseong, Korea Samsung Electronics, Suwon, Korea 1 2 As the demand for intuitive and interactive displays is increasing in mobile devices such as smartphones and tablets, a pressure-sensitive stylus pen solution is needed for advanced user experiences [1-5]. Figure 10.4.1 compares electromagnetic resonance (EMR), active, and electrically coupled resonance (ECR) stylus systems, and shows cross-sectional views of sensor panels. EMR stylus systems have been successfully commercialized for high-end devices due to their battery-less, light, and pressure-sensing features [1-2]. However, EMR stylus systems require an extra sensing panel for electro-magnetic coupling. The active stylus system does not require the additional sensing panel but needs a

👥 作者与机构

Kyung-Hoon Lee1, Sang-Pil Nam1, Jung-Ho Lee1, Michael Choi1,