| 摘要 |
A cellular telephone is provided with two dialing modes: the normal dialing mode, and a new dialing mode for impaired users called touch-any-key dialing. To prepare the phone for use in the touch-any-key dialing mode, a caretaker powers-on the phone, enters the phone's password, loads one, two, or three telephone numbers into the phone's speed-dial memory, and then selects the touch-any-key dialing mode. To dial a phone so prepared, a user enters keystrokes anywhere on the phone's keypad, the first of which keystrokes starts a timer. If one, two, or three keystrokes are detected within a predetermined interval of time, the phone dials the first, second, or third speed-dial numbers, respectively. If four or more keystrokes are detected in the interval, the keystrokes are compared with a pre-programmed password. If the password and the keystrokes match, the phone switches from touch-any-key dialing mode to normal cellular telephone dialing mode; if the keystrokes and the password differ, the phone persists in touch-any-key dialing mode.
|
