发明授权
- 专利标题: Touchpad computer input system and method
- 专利标题(中): 触摸板电脑输入系统及方法
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申请号: US09151558申请日: 1998-09-11
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公开(公告)号: US06292173B1公开(公告)日: 2001-09-18
- 发明人: Roberto Rambaldi , Marco Tartagni , Zsolt Miklos Kovaks-Vajna , Nicolo' Manaresi
- 申请人: Roberto Rambaldi , Marco Tartagni , Zsolt Miklos Kovaks-Vajna , Nicolo' Manaresi
- 主分类号: G09G508
- IPC分类号: G09G508
摘要:
A method of and system for providing user input to a computer captures a first finger position image at a first time and a second finger position image at a second time. The first and second finger position images each comprise a plurality of numerical gray scale values equal to or greater than zero. The system then subtracts the first finger position image from the second finger position image to obtain a composite image. The composite image has a first region comprising numerical values less than zero and a second region comprising numerical values greater than zero. The system provides X-Y input to the computer based upon the relative positions of first and second regions. The system further provides Z input to the computer based upon the relative sizes of said first and second regions.