Abstract: An efficient and simple approach to encoding ideographic characters as sequences of input strokes or stroke categories is disclosed, wherein: each character is represented by one or more sequences of one or more components; each component corresponds to a plurality of alternative stroke sequences, each of which is associated with a probability that it will be the sequence which the user enters to specify the given component or character; and the probability associated with the user's preferred stroke sequence is automatically increased by the system when the character is selected, thus automatically adapting to a user's preferences.

Abstract: A Chinese text entry system and method is provided to allow users to enter a character to a device such as a cellular phone or a PDA by adding a first few strokes required for the character using a joystick or its equivalent. By simply moving the joystick to add one or more strokes which are used to start writing a character, or in some case even before any stroke is added, a user can find a desired character from a displayed selection list. The selection list is context sensitive, varying depending on the last character entered, so that the user can be provided with the most possible candidates of the desired character.

Abstract: The present invention relates to a method and apparatus for explicit filtering in ambiguous text entry. The invention provides embodiments including various explicit text entry methodologies, such as 2-key and long pressing. The invention also provides means for matching words in a database using build around methodology, stem locking methodology, word completion methodology, and n-gram searches.