Electrically erasable writing surface
AssigneeNokia Corporation
InventorsYukka Yrjanainen, Jukka Hautanen, Jari A. Kangas
Life of this patent
Estimating the term…
Abstract
An electrically erasable writing surface is provided. The writing surface includes a bistable display layer that responds to electrical and mechanical inputs. A touch pad is located above or below the display layer. The writing surface facilitates writing complex characters and increases accuracy by displaying a user input created by a passive stylus.
Claims31
A writing surface, the writing surface comprising:
- a display layer comprising electrically and mechanically sensitive display material having at least two stable optical states;
- a touch pad physically coupled to the display layer, the touch pad configured to convert a mechanical input into an electrical output.
A user interface for use with an electronic device, the user interface comprising:
- an optical output section;
- and
- a mechanical input section comprising:
- a display layer comprising electrically and mechanically sensitive display material having at least two stable optical states;
- and
- a touch pad physically coupled to the display layer, the touch pad configured to convert a mechanical input into an electrical output.
A mobile terminal comprising:
- an output display;
- and
- a mechanical input device comprising:
- a display layer comprising electrically and mechanically sensitive display material having at least two stable optical states;
- and
- a touch pad physically coupled to the display layer, the touch pad configured to convert a mechanical input into an electrical output.
A method of operating an input device having an electrically and mechanically sensitive display layer having at least two stable optical states and physically coupled to a touch pad, the method comprising:
- (a) receiving at the display layer and the touch pad a mechanical input;
- (b) in response to (a) changing an optical state of the display layer;
- (c) at the touch pad, in response to (a), converting the physical input to an electrical output.
Dependencies are inferred from the claim text.