发明授权
- 专利标题: Acoustic based pointing device
- 专利标题(中): 声学指向装置
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申请号: US10117851申请日: 2002-04-08
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公开(公告)号: US07158126B2公开(公告)日: 2007-01-02
- 发明人: Miroslav Trajkovic , Antonio Colmenarez , Srinivas Gutta
- 申请人: Miroslav Trajkovic , Antonio Colmenarez , Srinivas Gutta
- 申请人地址: NL Eindhoven
- 专利权人: Koninklijke Philips Electronics N.V.
- 当前专利权人: Koninklijke Philips Electronics N.V.
- 当前专利权人地址: NL Eindhoven
- 代理商 Michael E. Belk; Paul Im
- 主分类号: G09G5/00
- IPC分类号: G09G5/00
摘要:
An acoustic based pointing device and a system and method for using the pointing device to move a cursor on a display screen of a display device. The pointing device comprises an acoustic source that generates and propagates an acoustic signal that is detected by four microphones M1, M2, M3, and M4 and is then converted into corresponding periodic electrical signals S1, S2, S3, and S4. The position vector P0 of the acoustic source is calculated by solving triangulation equations that depend on phase-shift time delays between S1 and Sj for j=1, 2, and 3. A position vector PC is calculated from P0 using a scale vector that relates a change in position of the cursor to a change in position of the acoustic source. Then the cursor is moved to a position PC associated with the position vector PC.
公开/授权文献
- US20030189545A1 Acoustic based pointing device 公开/授权日:2003-10-09
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