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US 2010/0146457 A1Published application
Interactive Display
OwnerHarold Thimbleby, Will Thimblebyinventors
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OwnerHarold Thimbleby, Will Thimblebyinventors
Estimating the term…
A pen-based calculator, wherein the user is presented with a screen and a gesture based input device by means of which a sum can be “handwritten” and displayed on the screen. The visibility on the screen of the system's status is provided through two types of feedback: annotation and morphing. As the user is writing the expression, the system can process in the background and, as a symbol is recognised, the user is made aware of this recognition by visual feedback: a typeset character stretched to the stroke's hull replaces the written strokes. Morphing formats the entered expression into a correctly typeset equation by moving the symbols as little as possible from the user's writing, and the morph provides the continuity between the user's input and the typeset equation that allows them to continue to edit and use it. Finally, the answer may be displayed at the correct location relative to the equation.
A gesture-based user interface, comprising display means and a gesture-based input means for generating a user-defined expression comprised of characters, digits and/or symbols for display on said display means, the user interface further comprising recognition means for recognising said characters, digits and/or symbols, means for enabling a user-defined edit event in respect of a portion of said expression, an edit event comprising adding, deleting or altering one or more characters, digits or symbols, means for recognising said edit event and automatically rearranging said expression to maintain the syntax thereof depending on the nature of an edit event and the relationship between the revised set of characters, digits and/or symbols resulting from said edit event.
An interface according to any one of the preceding claims, further comprising a clock means for direct control of the time, so as to provide on said display means an animated undo/redo function.
An interface according to any one of the preceding claims, wherein said expression, or at least a portion thereof, is retrieved from a dock for storing and exchanging data, whether fixed or updatable.
An interface substantially as herein described with reference to the accompanying drawings.
Dependencies are inferred from the claim text.