Control of electronic devices
First Claim
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1. An electronic device comprisinga touch-sensitive surface anda touchless detecting system for detecting movement of a finger towards the surface, wherein the touchless detecting system is configured to transmit an ultrasonic signal, receive a reflected ultrasonic signal, measure an echoic profile of said reflected ultrasonic signal and determine the movement from said echoic profile;
- the device being configured to associate said movement with a predicted touch on said surface and to issue a report of said predicted touch, said touchless detecting system being further configured to use edge detection in the echoic profile to detect preferentially the user'"'"'s fingertip over other parts of the user'"'"'s hand.
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Abstract
An electronic device comprising a touch-sensitive surface and a touchless detecting system for detecting movement of a finger towards the surface. The device is configured to associate said movement with a predicted touch on said surface and to issue a report of said predicted touch.
8 Citations
21 Claims
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1. An electronic device comprising
a touch-sensitive surface and a touchless detecting system for detecting movement of a finger towards the surface, wherein the touchless detecting system is configured to transmit an ultrasonic signal, receive a reflected ultrasonic signal, measure an echoic profile of said reflected ultrasonic signal and determine the movement from said echoic profile; the device being configured to associate said movement with a predicted touch on said surface and to issue a report of said predicted touch, said touchless detecting system being further configured to use edge detection in the echoic profile to detect preferentially the user'"'"'s fingertip over other parts of the user'"'"'s hand. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating an electronic device comprising a touch-sensitive surface and a touchless detecting system, the method comprising:
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detecting movement of a finger towards the surface using the touchless detecting system; using the touchless detecting system to transmit an ultrasonic signal; using the touchless detecting system to receive a reflected ultrasonic signal; measuring an echoic profile of said reflected ultrasonic signal; determining the movement from said echoic profile, using edge detection in the echoic profile to detect preferentially the user'"'"'s fingertip over other parts of the user'"'"'s hand; associating said movement with a predicted touch on said surface; and issuing a report of said touch.
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11. A non-transitory, computer-readable medium comprising instructions that, when executed on a suitable processor, operate an electronic device comprising a touch-sensitive surface and a touchless detecting system, the instructions comprising:
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instructions for detecting movement of a finger towards the surface using the touchless detecting system, wherein the touchless detecting system is configured to transmit an ultrasonic signal, receive a reflected ultrasonic signal, measure an echoic profile of said reflected ultrasonic signal and determine the movement from said echoic profile, using edge detection in the echoic profile to detect preferentially the user'"'"'s fingertip over other parts of the user'"'"'s hand; instructions for associating said movement with a predicted touch on said surface; and instructions for issuing a report of said predicted touch. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An electronic device comprising
a touch-sensitive surface and a touchless detecting system for detecting movement of a finger towards the surface, wherein the touchless detecting system comprises three or more ultrasound receiver-transmitter combinations and is configured to provide time-of-flight measurements between each of the receiver-transmitter combinations, use said time-of-flight measurements to calculate an echoic profile and determine the movement from said echoic profile; the device being configured to associate said movement with a predicted touch on said surface and to issue a report of said predicted touch, said touchless detecting system being further configured to use the echoic profile to detect preferentially the user'"'"'s fingertip over other parts of the user'"'"'s hand.
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21. An electronic device comprising
a touch-sensitive surface and a touchless detecting system for detecting movement of a finger towards the surface, wherein the touchless detecting system comprises an ultrasound transmitter and is configured to transmit using said ultrasound transmitter an ultrasonic signal comprising a chirp, receive a reflected ultrasonic signal, measure an echoic profile of said reflected ultrasonic signal and determine the movement from said echoic profile; the device being configured to associate said movement with a predicted touch on said surface and to issue a report of said predicted touch, said touchless detecting system configured to use the echoic profile to detect preferentially the user'"'"'s fingertip over other parts of the user'"'"'s hand.
Specification