| 摘要 |
Systems, devices and methods are disclosed for input of characters and text using button press types. A device identifies button presses as one of three types that are both mutually exclusive and that categorize all possible button press outcomes. For all three types, a selection button press tentatively identifies a first character and initiates the elapsed time period. For a 'short' button press the user ends the button press before the time period expires. For a 'long' button press the user maintains the button press until after the time period expires. For a 'pair' button press the user presses an additional selection button before the time period expires. The elapsed time period ends once the second button press occurs. The button press type together with an assigned value(s) of the pressed button(s) identifies a particular character for selection. |
