Touch-sensitive surface
First Claim
Patent Images
1. An apparatus comprising:
- a transmitter configured to send an electrical signal;
a receiver configured to receive the electrical signal using a capacitively coupled human body as a communication channel, wherein the received electrical signal is received by the receiver from the transmitter through the capacitively coupled human body;
a touch sensitive surface configured to provide a touch signal, wherein the touch signal is a different signal than the received electrical signal;
wherein the apparatus is configured at least to;
measure the received electrical signal in response to the touch signal; and
determine a body part of a user touching the touch sensitive surface based on the measured electrical signal.
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Abstract
A body part of a user touching a touch sensitive surface is determined based on a measured electrostatic signal. The electrostatic signal is transmitted by a transmitter and received by a receiver using a capacitively coupled human body as a communication channel. A touch signal is provided by the touch sensitive surface being touched by the user. The received electrostatic signal is measured in response to the touch signal and the body part of the user touching the touch sensitive surface is determined.
27 Citations
20 Claims
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1. An apparatus comprising:
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a transmitter configured to send an electrical signal; a receiver configured to receive the electrical signal using a capacitively coupled human body as a communication channel, wherein the received electrical signal is received by the receiver from the transmitter through the capacitively coupled human body; a touch sensitive surface configured to provide a touch signal, wherein the touch signal is a different signal than the received electrical signal; wherein the apparatus is configured at least to; measure the received electrical signal in response to the touch signal; and determine a body part of a user touching the touch sensitive surface based on the measured electrical signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method comprising:
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transmitting an electrical signal; receiving the electrical signal using a capacitively coupled human body as a communication channel, wherein the received electrical signal is received by a receiver from a transmitter through the capacitively coupled human body; providing a touch signal by a touch sensitive surface being touched by a user, wherein the touch signal is a different signal than the received electrical signal; measuring the received electrical signal in response to the touch signal; and determining a body part of the user touching the touch sensitive surface based on the measured electrical signal. - View Dependent Claims (18, 19)
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20. A computer program embodied on a non-transitory computer readable medium comprising computer executable program code which, when executed by at least one processor of an apparatus, causes the apparatus to:
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transmit an electrical signal; receive the electrical signal using a capacitively coupled human body as a communication channel, wherein the received electrical signal is received by a receiver of the apparatus from a transmitter of the apparatus through the capacitively coupled human body; provide a touch signal by a touch sensitive surface being touched by a user, wherein the touch signal is a different signal than the received electrical signal; measure the received electrical signal in response to the touch signal; and determine a body part of the user touching the touch sensitive surface based on the measured electrical signal.
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Specification