Touchless interaction
First Claim
1. A portable electronic device comprising:
- a transmitter configured to transmit ultrasonic signals at a first transmission power,a receiver for receiving ultrasonic signals reflected from an input object, anda processor for processing received ultrasonic signals to determine an input to the device, wherein the device is configured to continue transmitting ultrasonic signals at a second, lower, transmission power in the event that the device determines that a reflection from an object other than the input object meets a predetermined criterion.
1 Assignment
0 Petitions
Accused Products
Abstract
A portable electronic device comprises means 4 for transmitting ultrasonic signals 8, means 6 for receiving ultrasonic signals 12 reflected from an input object 10, and means for processing received ultrasonic signals to determine an input to the device. The device is configured to reduce the transmission power of the ultrasonic signals transmitted by the transmitting means in the event that: the device determines that a reflection 16 from an object 14 other than the input object meets a predetermined criterion; or if an event is detected which indicates that the user is or will be using a function of the device which does not support touchless interaction.
Also disclosed is an electronic device comprising transmission means 4 for transmitting ultrasonic signals 8, means 6 for receiving ultrasonic signals 12 reflected from an input object 10 and means for processing received ultrasonic signals to determine an input to the device, the device further comprising user operable control means for allowing a user to turn a touchless interaction mode on and off, the device being configured to execute an additional operation when the touchless interaction mode is turned off.
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Citations
9 Claims
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1. A portable electronic device comprising:
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a transmitter configured to transmit ultrasonic signals at a first transmission power, a receiver for receiving ultrasonic signals reflected from an input object, and a processor for processing received ultrasonic signals to determine an input to the device, wherein the device is configured to continue transmitting ultrasonic signals at a second, lower, transmission power in the event that the device determines that a reflection from an object other than the input object meets a predetermined criterion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification