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    • 8. 发明授权
    • Input/output apparatus and method therefor
    • 输入/输出设备及其方法
    • US5059749A
    • 1991-10-22
    • US497332
    • 1990-03-22
    • Azuma MurakamiAkio KikuchiToshihide Chikami
    • Azuma MurakamiAkio KikuchiToshihide Chikami
    • G06F3/041G06F3/033G06F3/046G06F3/048G06K11/06
    • G06F3/046
    • An input/output apparatus includes a coordinate input device and a display device which are stacked on each other. The coordinate input device detects position coordinates of an input designating device by (a) intermittently transmitting radio waves from a tablet to excite a tuned circuit incorporated in the input designating device and (b) receiving radio waves generated by the tuned circuit while transmission of radio waves by the tablet is suspended. The times while the display data latch pulses are generated in the display device is synchronized with the transmission of radio waves from the tablet in the coordinate input device. In consequence, noise is not generated in synchronism with the generation of the display data latch pulses while the tablet receives the radio waves, so noise is not imposed on a signal received by the tablet. As a result, there is no reduction in the accuracy with which position is detected on the basis of the received radio waves and malfunction of the apparatus is substantially eliminated.
    • 输入/输出装置包括彼此堆叠的坐标输入装置和显示装置。 坐标输入装置通过以下步骤来检测输入指定装置的位置坐标:(a)从平板电脑间歇地发送无线电波,以激发包含在输入指定装置中的调谐电路,以及(b)在发送无线电的同时接收由调谐电路产生的无线电波 平板电脑的浪潮被暂停。 在显示装置中生成显示数据锁存脉冲的时间与来自坐标输入装置中的图形输入板的无线电波的发送同步。 因此,当平板电脑接收无线电波时,不产生与显示数据锁存脉冲的产生同步的噪声,所以不会对由平板电脑接收的信号施加噪声。 结果,基于所接收的无线电波,检测到位置的精度没有降低,并且基本上消除了装置的故障。
    • 10. 发明授权
    • Coordinates detecting apparatus with display unit of a type having
separate control unit
    • 具有具有单独控制单元的类型的显示单元的坐标检测装置
    • US5576735A
    • 1996-11-19
    • US208204
    • 1994-03-10
    • Akio KikuchiYasuo Oda
    • Akio KikuchiYasuo Oda
    • G06F1/18G06F1/16G06F1/26G06F3/033G06F3/041G06F3/048G09G5/00
    • G09G5/006G06F1/1626G06F1/1643G06F1/1656G06F1/166G06F3/0416G06F3/0488G06F2200/1632G06F3/14G09G2330/06G09G2370/04
    • A coordinate detecting apparatus with a display unit of a type having a separated control unit constituted for the purpose of improving the handling facility of the coordinate detecting apparatus with the display unit, lowering the frequency for transferring data about the contents to be displayed, enabling the circuit for the display control means to be freely designed and also enabling the coordinate detecting apparatus to be connected to an existing computer body. The coordinate detecting apparatus with the display unit is supplied with power from a power source for a control unit, data about the contents to be displayed is supplied from the control unit to the coordinate detecting apparatus with the display unit via one integrated cable while being compressed to form a graphic control signal, the data about the contents to be displayed is restored in the coordinate detecting apparatus with the display unit and the aforesaid function is given to the interface board.
    • 一种坐标检测装置,具有具有分离的控制单元的类型的显示单元,用于改善具有显示单元的坐标检测装置的处理设施,降低用于传送关于要显示的内容的数据的频率,使得能够 用于显示控制装置的电路被自由设计,并且还使得坐标检测装置能够连接到现有的计算机主体。 具有显示单元的坐标检测装置从用于控制单元的电源提供电力,关于要显示的内容的数据将通过一个集成电缆从控制单元提供给具有显示单元的坐标检测装置,同时被压缩 为了形成图形控制信号,在显示单元的坐标检测装置中恢复关于要显示的内容的数据,并且将上述功能给予接口板。