Handwriting Input System Based on Ultrasonic Transducers  

作　　者：王宇峰 杨轶 孔祥明 廖文俊 王利刚 任天令 刘理天 

机构地区：[1]Tsinghua National Laboratory for Information Science and Technology,Institute of Microelectronics,Tsinghua University

出　　处：《Tsinghua Science and Technology》2011年第3期290-294,共5页清华大学学报（自然科学版（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Nos. 61025021,60936002, 60729308,and 61020106006);the National High-Tech Research and Development (863) Program of China (No.2006AA04Z372);the National Key Projects of Science and Technology of China (No.2009ZX02023-1-3)

摘　　要：A handwriting input system was developed using three collinear ultrasonic transducers. These collinear polyvinylidene fluoride （PVDF） transducers were specially designed for the handwriting input system to give a large writeable area with writing in any direction. Driver and detection circuits were developed for the handwriting system. This handwriting input system based on 2-dimensional position tracing has large writeable area （A4 paper）, low drive voltage （5 V）, and is independent of the handwriting pad or the pen.A handwriting input system was developed using three collinear ultrasonic transducers. These collinear polyvinylidene fluoride （PVDF） transducers were specially designed for the handwriting input system to give a large writeable area with writing in any direction. Driver and detection circuits were developed for the handwriting system. This handwriting input system based on 2-dimensional position tracing has large writeable area （A4 paper）, low drive voltage （5 V）, and is independent of the handwriting pad or the pen.

关 键 词：collinear transducers PVDF driver and detection circuit handwriting input system 

分 类 号：TP391.14[自动化与计算机技术—计算机应用技术] TP212.9[自动化与计算机技术—计算机科学与技术]