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    • 7. 发明专利
    • Keyboard command reader for portable computer
    • 便携式计算机的键盘命令读取器
    • JP2003036134A
    • 2003-02-07
    • JP2002154544
    • 2002-05-28
    • Isei Denshi Kofun Yugenkoshi威盛電子股▲ふん▼有限公司
    • KUO HUBERTCHO YU-BINLIN I-MING
    • G06F3/02H03M11/20
    • H03M11/20
    • PROBLEM TO BE SOLVED: To provide a improved and simplified keyboard command reader for a portable computer.
      SOLUTION: The keyboard command reader 700 of the portable computer is provided with a shift register 702 which outputs a plurality of scan-input signals and one reference signal, a keyboard matrix circuit 704 which outputs a scan-output signal corresponding to the scan-input signals, a filter 706 which filters out noise of the scan-output signal, a buffer 708 which further stabilizes the filter signal, an address generator 710 which reads the position of a node corresponding to a pressed button, a mapping device 712 which outputs a mapping signal corresponding to the pushed button, a comparator 714 which outputs a comparison signal representing a command corresponding to the pushed button, and an output device 716 which outputs a data clock signal and a data output signal corresponding to the comparison signal in series.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:为便携式计算机提供改进和简化的键盘命令阅读器。 解决方案:便携式计算机的键盘命令读取器700设置有输出多个扫描输入信号和一个参考信号的移位寄存器702,输出与扫描输入对应的扫描输出信号的键盘矩阵电路704 信号,滤除扫描输出信号的噪声的滤波器706,进一步稳定滤波器信号的缓冲器708,读取对应于被按下的按钮的节点的位置的地址发生器710,输出 映射信号对应于推压按钮,比较器714输出表示对应于按钮的命令的比较信号,以及输出装置716,输出与比较信号对应的数据时钟信号和数据输出信号。