Touch-sensitive system and method for controlling the operation thereof
First Claim
1. A touch-sensitive system comprising:
- a light transmissive panel defining a touch surface and an opposite surface;
an illumination arrangement including emitters configured to introduce light into the panel for propagation in the panel in an emission pattern;
a light detection arrangement including detectors configured to receive the light propagating in the panel; and
a control unit for controlling the illumination arrangement,wherein the control unit includes a mode selector configured to,monitor the light received in the light detection arrangement to detect one or more touches on the touch surface, said one or more touches attenuating the light propagating in the panel, andselect a mode for the emission pattern in dependence of the occurrence of touches on the touch surface,wherein the control unit is configured to control the emission pattern in accordance with the selected mode, andwherein the control unit is configured to control the emission pattern by changing at least one of the number of active emitters in the illumination arrangement and the intensity of the light emitted by the emitters.
1 Assignment
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Accused Products
Abstract
A touch-sensitive system comprises a light transmissive panel defining a touch surface and an opposite surface; an illumination arrangement comprising emitters configured to introduce light into the panel for propagation in the panel in an emission pattern; a light detection arrangement comprising detectors configured to receive the light propagating in the panel. A control unit is arranged to control the operation of the touch-sensitive system. The control unit executes a control method to monitor the light received in the light detecting arrangement for detection of touches on the touch surface, the touches attenuating the light propagating in the panel. The control method also selects a mode for the emission pattern in dependence of the occurrence of touches on the touch surface and controls the emission pattern in accordance with the selected mode.
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Citations
20 Claims
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1. A touch-sensitive system comprising:
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a light transmissive panel defining a touch surface and an opposite surface; an illumination arrangement including emitters configured to introduce light into the panel for propagation in the panel in an emission pattern; a light detection arrangement including detectors configured to receive the light propagating in the panel; and a control unit for controlling the illumination arrangement, wherein the control unit includes a mode selector configured to, monitor the light received in the light detection arrangement to detect one or more touches on the touch surface, said one or more touches attenuating the light propagating in the panel, and select a mode for the emission pattern in dependence of the occurrence of touches on the touch surface, wherein the control unit is configured to control the emission pattern in accordance with the selected mode, and wherein the control unit is configured to control the emission pattern by changing at least one of the number of active emitters in the illumination arrangement and the intensity of the light emitted by the emitters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for controlling a touch-sensitive system including a light transmissive panel defining a touch surface and an opposite surface, the method comprising:
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introducing light into the panel with an illumination arrangement including emitters, for propagating in the panel in an emission pattern; receiving the light propagating in the panel with a light detection arrangement including detectors; monitoring the light received by the light detection arrangement to detect one or more touches on the touch surface, said one or more touches attenuating the light propagating in the panel; selecting a mode for the emission pattern in dependence of the occurrence of touches on the touch surface; controlling the emission pattern in accordance with the selected mode; and wherein the emission pattern is controlled by changing at least one of the number of active emitters in the illumination arrangement and the intensity of the light emitted by the emitters. - View Dependent Claims (19)
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20. A non-transitory computer-readable medium storing processing instructions that, when executed by a data processor, cause the data processor to perform a method for controlling a touch-sensitive system including a light transmissive panel defining a touch surface and an opposite surface, the method comprising:
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introducing light into the panel with an illumination arrangement including emitters, for propagating in the panel in an emission pattern; receiving the light propagating in the panel with a light detection arrangement including detectors; monitoring the light received by the light detection arrangement to detect one or more touches on the touch surface said one or more touches attenuating the light propagating in the panel; selecting a mode for the emission pattern in dependence of the occurrence of touches on the touch surface; controlling the emission pattern in accordance with the selected mode; and wherein the emission pattern is controlled by changing at least one of the number of active emitters in the illumination arrangement and the intensity of the light emitted by the emitters.
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Specification