INTERACTION SURFACES
First Claim
Patent Images
1. An input apparatus comprising:
- an interaction surface;
an acoustic transmitter located adjacent the surface;
an acoustic receiver located adjacent the surface and across the surface from the transmitter; and
a processor,wherein the apparatus is configured to;
transmit an acoustic signal or signals from the transmitter;
receive the signal or signals at the receiver; and
detect the presence of an input object adjacent or touching the interaction surface by detecting an increase in the minimum time of flight, through air, of at least a part of the signal or signals.
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Abstract
An input apparatus has an interaction surface, an acoustic transmitter located adjacent the surface, an acoustic receiver located adjacent the surface and across the surface from the transmitter, and a processing environment. It is configured to transmit an acoustic signal(s) from the transmitter and to receive the signal or signals at the receiver. It detects the presence of an input object adjacent or touching the interaction surface by detecting an increase in the minimum time of flight, through air, of at least a part of the signal(s).
39 Citations
29 Claims
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1. An input apparatus comprising:
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an interaction surface; an acoustic transmitter located adjacent the surface; an acoustic receiver located adjacent the surface and across the surface from the transmitter; and a processor, wherein the apparatus is configured to; transmit an acoustic signal or signals from the transmitter; receive the signal or signals at the receiver; and detect the presence of an input object adjacent or touching the interaction surface by detecting an increase in the minimum time of flight, through air, of at least a part of the signal or signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of receiving a user input, the method comprising:
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transmitting an acoustic signal from a transmitter located adjacent an interaction surface; receiving the signal at a receiver located adjacent the interaction surface and across the surface from the transmitter; and detecting the presence of an input object adjacent or touching the interaction surface by detecting an increase in the minimum time of flight, through air, of at least a part of the signal. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A non-transitory computer-readable medium having stored thereon computer software which, when executed on a processor, causes the processor to:
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control an output to a transmitter located adjacent an interaction surface so as to cause the transmitter to transmit an acoustic signal; receive an input comprising the signal received at a receiver located adjacent the interaction surface and across the surface from the transmitter; and detect the presence of an input object adjacent or touching the interaction surface by detecting an increase in the minimum time of flight, through air, of at least a part of the signal.
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Specification