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US 2001/0040558 A1Published application
Device and method for implementing a key
AssigneeNokia Mobile Phones Ltd.
InventorsRoope Takala, Antii Kujala
Life of this patent
Estimating the term…
Abstract
A device and method for implementing a key, in which a field applied to a layer comprising a material whose volume is responsive to the magnitude of field is altered (53) at a specified position to create a key in said position; said field being one of the following: electric field, magnetic field, both of the above.
Claims27
A key element, wherein it comprises
- a first layer comprising material whose volume is responsive to the magnitude of a field, said field being one of the following:
- electric field, magnetic field, both of the above;
- and
- means for altering the field in a wanted position in said layer to create a key in that position.
1 more element
A key element, wherein it comprises
- a first layer comprising material whose volume is responsive to the magnitude of a field, said field being one of the following:
- electric field, magnetic field, both of the above;
- means for detecting a key press;
- and
- means for altering said field to make the key move downward in response to the detected press.
2 more elements
A method for creating a key, wherein in the method,
- a field applied to a first layer comprising material whose volume is responsive to the magnitude of a field is altered at a specified position to create a key in said position;
- said field being one of the following:
- electric field, magnetic field, both of the above.
An electronic device, wherein the device comprises
- a layer comprising material whose volume is responsive to the magnitude of a field, said field being one of the following:
- electric field, magnetic field, both of the above;
- and means for altering the field in a wanted position in said layer to create a key in that position.
A manufacturing method for manufacturing a key element, wherein the manufacturing method comprises
- joining a layer comprising material whose volume is responsive to the magnitude of a field with means for altering said field, the field being one of the following:
- electric field, magnetic field, both of the above.
Dependencies are inferred from the claim text.