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1. 发明申请

WO1994011844A1 GRAPHIC DATA ACQUISITION AND PROCESSING METHOD AND DEVICE 审中-公开
标题翻译：图形数据采集和处理方法和装置
公开(公告)号：WO1994011844A1
公开(公告)日：1994-05-26
申请号：PCT/FR1993001123
申请日：1993-11-17
申请人： LECTRA SYSTEMES , DEBUISSER, Thomas , LERISSON, Jean-Pierre , GILLIARD, Laurent
发明人： LECTRA SYSTEMES
IPC分类号： G06K11/14
CPC分类号： G06F3/043 , G06F3/03545
摘要： Ultrasonic pulses are emitted by two transmitters (12, 14) carried on an instrument (10) and substantially aligned with the tip thereof. A plurality of receivers (62a, ..., 62e) occupy predetermined positions relative to a base (50) on which a line is drawn with the tip of the instrument, such that the ultrasonic pulses emitted from any point on the base surface are received by more than two receivers. The ultrasonic pulse propagation times between each transmitter and the receivers are measured to determine the co-ordinates of the vector defined by the positions of the two transmitters, and thereby deduce the position of the instrument tip on the base, and at least one of the two instrument orientation data items consisting of the longitudinal tilt of the instrument relative to the base and the angular position of the instrument about an axis which is at a predetermined angle to said base. Furthermore, the pressure exerted on the base by the instrument tip is sensed in order to determine line width data on the basis of the orientation data and/or the pressure data, and instrument tip position data is combined with corresponding line width data.
摘要翻译：超声波脉冲由携带在仪器（10）上的两个发射器（12,14）发射并与其尖端基本对准。多个接收器（62a，...，62e）相对于在其上用仪器的尖端绘制线的基座（50）占据预定位置，使得从基面上的任何点发射的超声波脉冲为由两个接收器接收。测量每个发射器和接收器之间的超声波脉冲传播时间以确定由两个发射器的位置限定的矢量的坐标，从而推断仪器尖端在基座上的位置，并且至少一个由乐器相对于基座的纵向倾斜和乐器围绕与基座成预定角度的轴的角度位置组成的两个乐器姿势数据项。此外，检测由仪器尖端施加在基座上的压力，以便基于取向数据和/或压力数据确定线宽数据，并且将仪器尖端位置数据与相应的线宽数据组合。

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