Abstract: The user interface allowing users to intuitively interact with a virtual keyboard to enter text containing non-alphabetic characters. The user interface uses a special purpose key to input a symbol which can be automatically interpreted as the intended symbol by the device.

Abstract: A word prediction system determines probabilities of next words based upon an n-gram analysis of the input words as a user inputs text into a device. The predicted next words can be predicted based upon the last input word(s) and the predicted next words can be displayed on a predicted word portion of the device. Rather than inputting the letters of the next word, a user can easily input a predicted next word that matches the desired next word.

Abstract: A three dimensional data input system includes a space sensor that can input commands and text based upon user gestures within a three dimensional space. The three dimensional space can include a virtual keyboard and the system identifies words input as a set of points input by a user on the virtual keyboard. The intended word is identified by determining an origin and points associated with letters on a log polar coordinate system. The log distances and angles of the points are then compared to log distances and angles for known words stored in a computer memory. The known word having the log distances and angles that most closely match the input points is identified as the intended word.

Abstract: An electronic device includes a touch screen for inputting text and hardware buttons for performing functions. A user inputs a sequence of letters and then actuates the hardware button which causes the system to perform an auto-correction if the input text is not recognized as a word and a space after the word. The hardware button can have multiple actuation modes including a touch actuation and a depression actuation. Each actuation mode can perform different system functions.

Abstract: A user interface allows a user to input text, numbers and symbols in to an electronic device through a touch sensitive input and make edits and correction to the text with one or more swipe gestures. The system can differentiate the swipes and perform functions corresponding to the detected swipes based upon swipe direction, number of fingers used in the swipe and the location of the swipes on the touch sensitive input.