Touchless interfaces
AssigneeElliptic Laboratories AS
InventorTobias DAHL
Life of this patent
Estimating the term…
Abstract
The shape or position of an object is estimated using a device comprising one or more transmitters and one or more receivers, forming a set of at least two transmitter-receiver combinations. Signals are transmitted from the transmitters, through air, to the object. They are reflected by the object and received by the receivers. A subset of the transmitter-receiver combinations which give rise to a received signal meeting a predetermined clarity criterion is determined. The positions of points on the object are estimated using substantially only signals from the subset of combinations.
Claims23
An apparatus for characterising the shape, location or motion of an object, said apparatus comprising:
- a display screen;
- a transmitting surface comprising the display screen, or being disposed in substantially overlapping relationship with the display screen, wherein the transmitting surface is arranged to transmit an acoustic signal from substantially all of the transmitting surface, the acoustic signal travelling through air towards an object located directly in front of the display screen;
- a receiver arranged to receive a reflection of the acoustic signal from the object;
- and
- a processing system configured to characterise the shape, location or motion of the object using information determined from the received reflection of the acoustic signal.
An apparatus for characterising the shape, location or motion of an object, said apparatus comprising:
- a display screen arranged to transmit an acoustic signal, through air, towards an object located in front of the display screen;
- a receiver arranged to receive a reflection of the acoustic signal from the object;
- and
- a processing system configured to characterise the shape, location or motion of the object using information determined from the received reflection of the acoustic signal.
A method of characterising the shape, location or motion of an object, said method comprising:
- transmitting an acoustic signal from substantially all of a transmitting surface, the transmitting surface comprising a display screen or being disposed in substantially overlapping relationship with a display screen, the acoustic signal travelling through air towards an object located directly in front of the display screen;
- receiving a reflection of the signal from the object;
- and
- characterising the shape, location or motion of the object using information determined from the received signal.
Dependencies are inferred from the claim text.