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发明授权
CN101957705B 电磁手写设备及其噪声识别方法 有权 转让

电磁手写设备及其噪声识别方法
摘要：
本发明提供一种电磁手写设备，属于电数字领域。包括：电磁笔；显示面板；设置在所述显示面板背面并具有多个发送线圈和多个接收线圈的天线板；控制单元，其控制进行对所述多个接收线圈和多个发送线圈的扫描，并识别噪声信号；发送单元，其向所述发送线圈供给电力，使所述多个发送线圈发送电磁波；和接收单元，其接收来自所述多个接收线圈的信号，并在进行线圈扫描时，采样振幅最大的所述发送线圈和所述接收线圈及与它们相邻的两个所述发送线圈和两个接收线圈上的采样信号，所述控制单元根据所述采样信号判断所述显示面板是否产生噪声。能够准确地识别显示面板产生的噪声，避免因显示面板刷新等产生的电磁波引起误动作。
摘要（英）：

The invention provides electromagnetic handwriting equipment, belonging to the electric and digital field and comprising an electromagnetic pen, a display panel, an antenna board, a control unit, a sending unit and a receiving unit, wherein the antenna board is arranged on the back surface of the display panel and provided with a plurality of sending coils and a plurality of receiving coils; the control unit controls the scanning of the receiving coils and the sending coils and recognizes a noise signal; the sending unit supplies power for the sending coils to ensure that the sending coils send electromagnetic waves; and the receiving unit receives signals of the receiving coils and samples sampling signals of the sending coil and the receiving coil with maximum amplitude as well as two sending coils and two receiving coils adjacent to the sending coil and the receiving coil with maximum amplitude when the coils are scanned, and the control unit judges whether the display panel generates noise or not according to the sampling signals. The invention can accurately recognize the noise generated by the display panel, and avoid the misoperation caused by the electromagnetic waves generated by the refreshing, and the like of the display panel.

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