TACTILE INPUT DEVICE, MICROPROCESSOR SYSTEM AND METHOD FOR CONTROLLING A TACTILE INPUT DEVICE
First Claim
1. A tactile input device comprising:
- a control device;
a proximity sensor unit arranged to detect an object or a movement of an object in a proximity detection region and to provide a proximity detection signal to the control device indicative of a detection or non-detection of said object or movement;
a tactile acoustic wave sensor unit for detecting a tactile input, said acoustic wave sensor unit having a low power mode and a high power mode;
wherein the control device is arranged to control the tactile acoustic wave sensor unit to be in the low power mode or the high power mode by providing a mode control signal based on the proximity detection signal received from the proximity sensor unit.
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Abstract
The present invention pertains to a tactile input device comprising a control device, a proximity sensor unit arranged to provide a proximity detection signal to the control device, a tactile acoustic wave sensor unit operable in a low power mode and a high power mode according to a mode control signal from the control device, wherein the control device is arranged to control the power mode of the tactile acoustic wave sensor unit by providing a mode control signal based on the proximity detection signal received from the proximity sensor unit. The present invention also pertains to a microprocessor system comprising such a tactile input device and a corresponding method for controlling a tactile input device.
23 Citations
21 Claims
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1. A tactile input device comprising:
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a control device; a proximity sensor unit arranged to detect an object or a movement of an object in a proximity detection region and to provide a proximity detection signal to the control device indicative of a detection or non-detection of said object or movement; a tactile acoustic wave sensor unit for detecting a tactile input, said acoustic wave sensor unit having a low power mode and a high power mode; wherein the control device is arranged to control the tactile acoustic wave sensor unit to be in the low power mode or the high power mode by providing a mode control signal based on the proximity detection signal received from the proximity sensor unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17, 18, 19, 20, 21)
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14. A method for controlling a tactile input device, comprising:
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receiving, by a control device, a proximity detection signal from a proximity sensor unit; and controlling, by the control device, a power mode of a tactile acoustic wave sensor unit based on the received proximity detection signal by providing a mode control signal to a tactile acoustic wave sensor unit.
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15. (canceled)
Specification