OPTICAL TOUCH DEVICE
First Claim
Patent Images
1. An optical touch device, applied to provide a touch area, comprising:
- at least one image sensor; and
a processing unit, electrically connected with the image sensor;
wherein when the optical touch device is in a sleep mode, one of the image sensors that present the sleep mode is enabled, such that the enabled image sensor detects an indication object on the touch area; and
when the image sensor detects that the indication object exists on the touch area, the image sensor notifies the processing unit to wake up the entire optical touch device.
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Abstract
An optical touch device is presented. When the optical touch device is in a sleep mode, only one of all image sensors of the optical touch device is enabled to detect an indication object on a touch area, so as to determine a wakeup time of the entire optical touch device.
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Citations
13 Claims
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1. An optical touch device, applied to provide a touch area, comprising:
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at least one image sensor; and a processing unit, electrically connected with the image sensor; wherein when the optical touch device is in a sleep mode, one of the image sensors that present the sleep mode is enabled, such that the enabled image sensor detects an indication object on the touch area; and when the image sensor detects that the indication object exists on the touch area, the image sensor notifies the processing unit to wake up the entire optical touch device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An optical touch device, comprising:
at least one light-emitting element, at least one image sensor, and a processing unit, wherein each image sensor is corresponding to one of the light-emitting elements, the processing unit is connected with these image sensors, the optical touch device further comprises a timer, and when the optical touch device is in a sleep mode, the timer is used to periodically actuate one of the image sensors, such that the enabled image sensor detects an indication object on a touch area to determine a wakeup time of the optical touch device. - View Dependent Claims (13)
Specification