Abstract: Methods and systems for text disambiguation and context designation in incremental search are provided. A method for selecting items in response to ambiguous keystrokes entered by a user and unambiguous metadata associated with a previously selected search result includes receiving ambiguous keystrokes, selecting and presenting a first subset of items and metadata associated with the items presented based on the ambiguous keystrokes. The method also includes receiving a selection of one of the items from the user, and, in response to a locking operation received from the user, locking in fixed relation at least one of the ambiguous keystrokes to at least one metadata term associated with the selected item. The method further includes, subsequent to receiving the locking operation, selecting and presenting a second subset of items based at least in part on the locked metadata term, and presenting the second subset of items.

Abstract: A user-interface system for entering an alphanumeric string or alphanumeric clusters for identifying information content is presented. The user-interface system has presentation logic for displaying an image of a virtual user alphanumeric interface on a presentation device. The virtual user alphanumeric interface includes an image of an overloaded keypad that has a two dimensional configuration of alphanumeric clusters. Each cluster corresponds to a set of alphanumeric characters. The user-interface system also has cluster selection logic for receiving user actions from an input device (e.g., five-button interface) to provide visual cues to help the user select an alphanumeric cluster and to cause the selected alphanumeric cluster or character from a cluster to be displayed in a display field of the virtual user alphanumeric interface.