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    • 2. 发明授权
    • KEYPAD DEVICE
    • 键盘装置
    • EP1523750B1
    • 2008-10-15
    • EP03765862.2
    • 2003-07-21
    • Sony Ericsson Mobile Communications AB
    • HENRY, Raymond, C.
    • H01H13/70
    • H01H13/702E05F2015/447H01H2003/146H01H2203/03H01H2205/002H01H2225/012
    • A keypad device for a mobile telephone or other device utilizing a keypad or keyboard is comprised of a flexible substrate and a keypad cover. The flexible substrate includes a plurality of keys affixed to the surface as well as a plurality first conductive strips associated with each key. The keypad cover is attached to the flexible substrate. The keypad cover typically includes holes that permit the plurality of keys to protrude through the keypad cover. In addition, the keypad cover further includes a plurality of second conductive strips that selectively contact a corresponding first conductive strip on the flexible substrate. The plurality of first conductive strips is coupled to ground and the plurality of second conductive strips is coupled to logic circuitry. Or, in another embodiment, both sets of conductive strips are coupled with the logic circuitry. The default position of the keypad device has each of the first conductive strips in contact with each of the corresponding second conductive strips. This creates a short circuit condition that prevents key signals from being received by the logic circuitry. When a particular key is depressed to the point where the first conductive strip associated with that particular key is separated from the second conductive strip corresponding to the first conductive strip, the short circuit condition is removed. This allows a signal to be transmitted to and processed by the logic circuitry indicating that a particular key has been selected.
    • 用于移动电话或利用小键盘或键盘的其他设备的小键盘设备包括柔性基板和小键盘盖。 柔性基板包括固定到表面的多个键以及与每个键相关联的多个第一导电条。 键盘盖连接到柔性基板。 键盘盖通常包括允许多个键突出穿过键盘盖的孔。 此外,键盘盖还包括多个第二导电条,所述多个第二导电条选择性地接触柔性基板上的对应的第一导电条。 多个第一导电条耦合到地并且多个第二导电条耦合到逻辑电路。 或者,在另一个实施例中,两组导电条与逻辑电路耦合。 键盘装置的默认位置使每个第一导电条与每个对应的第二导电条接触。 这会产生一个短路状态,防止逻辑电路接收到关键信号。 当特定键被按下到与该特定键相关联的第一导电条与对应于第一导电条的第二导电条分离的位置时,短路状态被去除。 这允许信号被发送到逻辑电路并由逻辑电路处理,指示已经选择了特定的键。
    • 10. 发明公开
    • KEYPAD DEVICE
    • KEYBOARD
    • EP1523750A1
    • 2005-04-20
    • EP03765862.2
    • 2003-07-21
    • Sony Ericsson Mobile Communications AB
    • HENRY, Raymond, C.
    • H01H13/70
    • H01H13/702E05F2015/447H01H2003/146H01H2203/03H01H2205/002H01H2225/012
    • A keypad device for a mobile telephone or other device utilizing a keypad or keyboard is comprised of a flexible substrate and a keypad cover. The flexible substrate includes a plurality of keys affixed to the surface as well as a plurality first conductive strips associated with each key. The keypad cover is attached to the flexible substrate. The keypad cover typically includes holes that permit the plurality of keys to protrude through the keypad cover. In addition, the keypad cover further includes a plurality of second conductive strips that selectively contact a corresponding first conductive strip on the flexible substrate. The plurality of first conductive strips is coupled to ground and the plurality of second conductive strips is coupled to logic circuitry. Or, in another embodiment, both sets of conductive strips are coupled with the logic circuitry. The default position of the keypad device has each of the first conductive strips in contact with each of the corresponding second conductive strips. This creates a short circuit condition that prevents key signals from being received by the logic circuitry. When a particular key is depressed to the point where the first conductive strip associated with that particular key is separated from the second conductive strip corresponding to the first conductive strip, the short circuit condition is removed. This allows a signal to be transmitted to and processed by the logic circuitry indicating that a particular key has been selected.