Pointing device having fingerprint image recognition function, fingerprint image recognition and pointing method, and method for providing portable terminal service using thereof
First Claim
1. A pointing device having a fingerprint image recognition, comprising:
- at least one or more fingerprint acquiring means for acquiring a fingerprint image of a finger surface depending on a predetermined cycle;
a characteristic point extracting means for extracting at least one or more characteristic points from the acquired fingerprint image;
a movement detecting means for calculating displacement data between characteristic points of the extracted fingerprint image to detect movement information of the fingerprint image;
a mapping means for mapping the fingerprint image in an inner virtual image space depending on the movement information;
a recognizing means for comparing a previously registered fingerprint image with the whole mapped fingerprint image when the entire size of the mapped fingerprint image reaches a previously set size and determining recognition on the fingerprint; and
an operating means for receiving the displacement data from the movement detecting means and calculating a direction and a distance where a pointer is to move with the displacement data.
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Abstract
A pointing device having a fingerprint recognition function, a fingerprint image recognition and pointing method, and a method for providing a portable terminal service using the same are disclosed. In the pointing device having a fingerprint recognition function and a fingerprint recognition method, fingerprint images having small sizes are mapped to generate a large fingerprint image or a small fingerprint image extracted from the large fingerprint image so that the pointing device performs user recognition and pointer control. As a result, respective sensors for the user recognition and for the pointer control are not comprised in the pointing device, but only one kind of sensors for performing both functions of user recognition and pointer control is comprised in the pointing device according to an embodiment of the present invention. Also, it is possible to easily embody miniaturization of a portable terminal device because the user recognition which requires a large fingerprint can be performed only with a small fingerprint image, thereby reducing manufacturing cost. Additionally, important information in the portable terminal device having the pointing device can be protected by selectively limiting kinds of service usable in the portable terminal device depending on user recognition.
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Citations
53 Claims
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1. A pointing device having a fingerprint image recognition, comprising:
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at least one or more fingerprint acquiring means for acquiring a fingerprint image of a finger surface depending on a predetermined cycle;
a characteristic point extracting means for extracting at least one or more characteristic points from the acquired fingerprint image;
a movement detecting means for calculating displacement data between characteristic points of the extracted fingerprint image to detect movement information of the fingerprint image;
a mapping means for mapping the fingerprint image in an inner virtual image space depending on the movement information;
a recognizing means for comparing a previously registered fingerprint image with the whole mapped fingerprint image when the entire size of the mapped fingerprint image reaches a previously set size and determining recognition on the fingerprint; and
an operating means for receiving the displacement data from the movement detecting means and calculating a direction and a distance where a pointer is to move with the displacement data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 47)
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9. A method for recognizing a fingerprint for user recognition, comprising the steps of:
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a fingerprint image acquiring step for acquiring at least one or more fingerprint images with a predetermined fingerprint acquiring sensor depending on a set cycle;
a characteristic point extracting step for extracting at least one or more characteristic points from the acquired fingerprint image;
a first mapping step for mapping a first fingerprint image in a specific location of a virtual image space;
a displacement data calculating step for calculating displacement data between characteristic points of the first fingerprint image and those of a second fingerprint image acquired in the next cycle after the cycle where the first fingerprint image is acquired;
a second mapping step for mapping the second fingerprint image with the displacement data in the virtual image space; and
a fingerprint recognition step for comparing characteristic points of the previously registered fingerprint image with those of the whole mapped fingerprint image when the whole size of the fingerprint images mapped in the virtual image space reaches a previously set size, and determines recognition of the fingerprint. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A pointing device having a fingerprint recognition, comprising:
- a fingerprint acquiring means (first operating cycle) for acquiring a required fingerprint image to a finger surface which controls a pointer through only once 2-dimensional image acquisition;
a fingerprint recognizing unit (second operating cycle) for extracting at least one or more characteristic points from the acquired fingerprint image and comparing characteristic points of the previously registered fingerprint image with the extracted characteristic points to recognize a user of the acquired fingerprint image; and
a pointing control unit (third operating cycle) for detecting movement information based on partial data of an image acquired with the first operating cycle and calculating displacement data of the fingerprint image depending on the movement information to calculate movement direction and distance of the pointer. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
- a fingerprint acquiring means (first operating cycle) for acquiring a required fingerprint image to a finger surface which controls a pointer through only once 2-dimensional image acquisition;
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33. A pointing method having a fingerprint recognition function, the pointing method of a pointer control device with an image sensor having a smaller size than a predetermined picture image required in a fingerprint recognition, comprising the steps of:
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a fingerprint image acquiring step for acquiring at least one or more fingerprint images of M×
N pixels depending on a first operating cycle with a predetermined fingerprint acquiring sensor on a finger surface which controls a movable pointer;
a recognition step for determining recognition of a user of the fingerprint image by extracting characteristic points from the acquired fingerprint image depending on a second operating cycle and comparing the extracted characteristic points with those of the previously register fingerprint image;
a fingerprint image extracting step for extracting a fingerprint image of m×
n pixels from the acquired fingerprint image depending on a third operating cycle;
a movement detecting step for detecting movement information of the respective fingerprint image by calculating displacement data of the respective extracted fingerprint image of M×
N pixels; and
an operating step for calculating and outputting a direction and a distance where the pointer is to move with the displacement data. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41)
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42. A pointing device having a fingerprint recognition function, comprising:
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at least one or more fingerprint acquiring means for acquiring an image of a finger surface depending on a predetermined cycle or on occasional requirement;
an operating means for calculating displacement data with the acquired fingerprint image to calculate direction and distance where a pointer is to move with the displacement data;
a storing means for mapping a fingerprint image obtained from the fingerprint acquiring means corresponding to the amount of movement in the displacement data received from the operating means; and
a CPU for analyzing and processing data of the operating means and the storing means. - View Dependent Claims (43, 44, 45, 46, 48)
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49. A method for providing service of a portable terminal device having a fingerprint recognition function, the method comprising:
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the first step of acquiring a fingerprint image of a user by a pointing device having the fingerprint recognition function, and comprising a previously registered fingerprint image with the acquired fingerprint image to determined recognition of the user; and
the second step of classifying usage rights of a user depending on the determination result in the first step to display a menu corresponding to the usage right. - View Dependent Claims (50, 51, 52, 53)
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Specification