METHOD FOR DETECTING OBJECT ON AN OPERATION INTERFACE OF A TOUCHABLE DEVICE AND TOUCHABLE DEVICE USING THE SAME
First Claim
1. A method for detecting a object, applicable to a touchable device, for detecting the object having a fingerprint feature and placed on an operation interface of the touchable device, comprising:
- acquiring, by an image sensor of the touchable device, an image on the operation interface;
converting the acquired image into a signal of a frequency domain by using a frequency conversion function; and
generating a first signal and a second signal according to a distribution of the signals of the frequency domain in a medium-high frequency (MHF) signal region, wherein the first signal indicates existence of the object on the operation interface, and the second signal indicates inexistence of the object on the operation interface.
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Abstract
A method for detecting an object and a touchable device are presented, which is capable of detecting an object having a fingerprint feature on an operation interface of the touchable device. An image sensor is used for acquiring acquiring an image on the operation interface, and the acquired image is converted into a signal denoted in a frequency domain by using a frequency conversion function. Signals at a medium-high frequency (MHF) signal region among the signals of the frequency domain are analyzed, so as to generate a first signal and a second signal according to a distribution of the signals of the frequency domain. The first signal indicates existence of the object on the operation interface, and the second signal indicates inexistence of the object on the operation interface.
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Citations
20 Claims
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1. A method for detecting a object, applicable to a touchable device, for detecting the object having a fingerprint feature and placed on an operation interface of the touchable device, comprising:
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acquiring, by an image sensor of the touchable device, an image on the operation interface; converting the acquired image into a signal of a frequency domain by using a frequency conversion function; and generating a first signal and a second signal according to a distribution of the signals of the frequency domain in a medium-high frequency (MHF) signal region, wherein the first signal indicates existence of the object on the operation interface, and the second signal indicates inexistence of the object on the operation interface. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A touchable device, comprising:
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an operation interface; an image sensor, configured corresponding to the operation interface, and for acquiring an image on the operation interface; a processor, connected to the image sensor, and for determining whether a object having a fingerprint feature exists on the operation interface by analyzing frequency components of the acquired image; and a track detector, connected to the processor, and for detecting a movement track of the object on the operation interface. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A touchable device, comprising:
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an operation interface; an image sensor, configured corresponding to the operation interface, and for acquiring an image on the operation interface; and a processor, connected to the image sensor, for determining whether a object having a fingerprint feature exists on the operation interface by analyzing frequency components of the acquired image, and calculating a displacement amount of the object by using the acquired image when the object exists on the operation interface. - View Dependent Claims (17, 18, 19, 20)
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Specification