⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出了一种基于互电容触摸传感的模拟前端架构，支持240Hz报告率，并能同时识别多个具有不同属性的主动/被动触控笔。通过现有触摸控制器和AFE芯片验证了系统方案，并扩展至无线主动触控笔应用。
A mutual-capacitance touch-sensing architecture and a system that enables concurrent usage of multiple active styluses having different properties such as color, thickness, shape, etc., are developed and verified with use of an existing touch controller [1]. An extension of the architecture to handle wireless active styluses is also developed and verified with an analog front-end (AFE) IC. Active-stylus systems built upon mutual-capacitance touch-sensing are commercially available [2][3], in which a stylus equipped with a battery emits energy from its tip for the sensor to receive a stronger signal. These active-stylus systems cannot readily be replaced by passive-stylus systems, even if high-SNR techniques are used [1][4], since active-stylus systems have clear advantages due to the stronger signal observed while detecting a stylus hovering above the sensor or in close vicinity to a finger or palm touch.
Mutsumi Hamaguchi, Michiaki Takeda, Masayuki Miyamoto
SHARP, Tenri, Japan