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1. 发明申请

US20100156831A1 Dual Pen Interactive Whiteboard System 失效
标题翻译：双笔交互式白板系统
公开(公告)号：US20100156831A1
公开(公告)日：2010-06-24
申请号：US12640017
申请日：2009-12-17
申请人： Dana Gene Doubrava , Mark Edward Plasterer , David Eric Timmons , Richard Wiley Prugh
发明人： Dana Gene Doubrava , Mark Edward Plasterer , David Eric Timmons , Richard Wiley Prugh
IPC分类号： G06F3/033 , G06F3/041
CPC分类号： G06F3/046
摘要： An electromagnetic interactive whiteboard system includes a first electronic pen (16) constructed and arranged to operate at a first frequency (F1). At least a second electronic pen (18) is constructed and arranged to operate at a second frequency (F2) that is different from the first frequency. An electromagnetic interactive whiteboard (12) has a single conductive grid (14) constructed and arranged to receive electromagnetic signals from the pens due to proximity of the pens to the grid. A circuit (30) separates the first and second frequencies into their respective X and Y component frequencies when the pens are operating simultaneously. A controller (20) receives a signal including the separated X and Y component frequencies of each of the first and second pens to detect each pen and to determine an X and Y coordinate position of each pen relative to the grid based on the X and Y component frequencies.
摘要翻译：电磁交互式白板系统包括构造和布置成以第一频率（F1）操作的第一电子笔（16）。至少第二电子笔（18）被构造和布置成在与第一频率不同的第二频率（F2）下操作。电磁交互式白板（12）具有单个导电栅格（14），其被构造和布置成由于笔接近网格而接收来自笔的电磁信号。当笔同时操作时，电路（30）将第一和第二频率分离成它们各自的X和Y分量频率。控制器（20）接收包括第一和第二笔中的每一个的分离的X和Y分量频率的信号，以检测每个笔，并且基于X和Y来确定每个笔相对于网格的X和Y坐标位置分量频率。

2. 发明授权

US08411053B2 Dual pen interactive whiteboard system 失效
标题翻译：双笔交互式白板系统
公开(公告)号：US08411053B2
公开(公告)日：2013-04-02
申请号：US12640017
申请日：2009-12-17
申请人： Dana Gene Doubrava , Mark Edward Plasterer , David Eric Timmons , Richard Wiley Prugh
发明人： Dana Gene Doubrava , Mark Edward Plasterer , David Eric Timmons , Richard Wiley Prugh
IPC分类号： G06F3/033
CPC分类号： G06F3/046
摘要： An electromagnetic interactive whiteboard system includes a first electronic pen (16) constructed and arranged to operate at a first frequency (F1). At least a second electronic pen (18) is constructed and arranged to operate at a second frequency (F2) that is different from the first frequency. An electromagnetic interactive whiteboard (12) has a single conductive grid (14) constructed and arranged to receive electromagnetic signals from the pens due to proximity of the pens to the grid. A circuit (30) separates the first and second frequencies into their respective X and Y component frequencies when the pens are operating simultaneously. A controller (20) receives a signal including the separated X and Y component frequencies of each of the first and second pens to detect each pen and to determine an X and Y coordinate position of each pen relative to the grid based on the X and Y component frequencies.
摘要翻译：电磁交互式白板系统包括构造和布置成以第一频率（F1）操作的第一电子笔（16）。至少第二电子笔（18）被构造和布置成在与第一频率不同的第二频率（F2）下操作。电磁交互式白板（12）具有单个导电栅格（14），其被构造和布置成由于笔接近网格而接收来自笔的电磁信号。当笔同时操作时，电路（30）将第一和第二频率分离成它们各自的X和Y分量频率。控制器（20）接收包括第一和第二笔中的每一个的分离的X和Y分量频率的信号，以检测每个笔，并且基于X和Y来确定每个笔相对于网格的X和Y坐标位置分量频率。

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