Acoustic user interface apparatus and method for recognizing touch and rubbing
AssigneeHyundai Motor Company
InventorsKwang Myung Oh, Sung Jin Sah, Sung Min Park, Hui Sung Lee
Life of this patent
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Abstract
An acoustic user interface apparatus and method can detect physical touch contacting a sensing surface and improve the accuracy of direction recognition of a touch or rubbing without any complicated algorithm. The user interface apparatus and method use one microphone to detect and analyze sound waves which are generated by collisions between bumps formed in a top plate or bottom plate of the interface apparatus and the opposing bottom plate or top plate when a user is touching or rubbing the sensing surface.
Claims14
An acoustic user interface apparatus comprising:
- a first substrate;
- a second substrate including touch cells which are pressable by a touch and restorable by an elastic force, and are arranged in two dimensions;
- and
- a plurality of bumps, each bump disposed on a respective one of the touch cells to be spaced apart from the first substrate by a predetermined distance, or each bump disposed on a respective position of the first substrate to be spaced apart from a corresponding one of the touch cells by a predetermined distance,
- wherein each bump has a density of impact surface or a size or shape of an empty space inside the bump that is different from other bumps of the plurality of bumps.
An acoustic user interface method for generating a position signal by distinguishing a sound wave of a touch portion according to a position, the method comprising:
- generating a sound wave from a portion collided with a first substrate when touching a second substrate including touch cells which are pressable by a touch and restorable by an elastic force, and are arranged in two dimensions;
- wherein each of a plurality of bumps is disposed on a corresponding position of the first substrate to be spaced apart from a corresponding one of the touch cells by a predetermined distance, and a bump of the plurality of bumps is collided with a touch cell to generate the sound wave,
- wherein each bump has an area, a material, a density of impact surface, or a size or shape of an empty space inside the bump that is different from other bumps of the plurality of bumps, and
- wherein elastic bodies providing the elastic force are disposed between an upper part of each bump and a lower part of the second substrate.
Dependencies are inferred from the claim text.