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    • 2. 发明授权
    • Capacitively coupled keypad structure
    • 电容耦合键盘结构
    • US06633241B2
    • 2003-10-14
    • US09746464
    • 2000-12-21
    • Terho KaikurantaSeppo SalminenBror SvarfvarPetri Vuori
    • Terho KaikurantaSeppo SalminenBror SvarfvarPetri Vuori
    • H03M1100
    • H03K17/98H01H13/702H01H2239/006
    • A keypad arrangement for an electronic device comprises a keypad comprising activatable keys. It comprises also input signal means (801, 802, 901, 1001, 1601) for bringing an electric input signal to the keypad, and signal conversion means (703, 705, 807, 808, 809, 810, 811, 812, 813, 818, 1208, 1206) for responding to a key activation by selectively converting the input signal into an electric output signal the value of which depends on the activated key. Additionally there are output signal detection means (902, 903, 904, 1002, 1602) for detecting the value of the electric output signal. The arrangement comprises a first electromagnetic coupling (706, 708, 709, 710, 803) between the input signal means and the signal conversion means, and a second electromagnetic coupling (707, 711, 804) between the signal conversion means and the output signal detection means.
    • 用于电子设备的键盘装置包括包括可激活键的小键盘。 它还包括用于将电输入信号输入到键盘的输入信号装置( 801,802,901,1001,1601 )和信号转换装置( 902,903,904,1002,1602 )。 该装置包括输入信号装置和信号转换装置之间的第一电磁耦合( 706,708,709,710,803 PDAT>)和第二电磁耦合( 707,711,804 )。信号转换装置和输出信号检测装置之间。