Apparatus, method, and medium of sensing movement of multi-touch point and mobile apparatus using the same
First Claim
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1. An apparatus for sensing movement of multi-touch points using a two-dimensional capacitive sensor, the apparatus comprising:
- a capacitance sensing unit to sense two or more touch points, and to sense capacitance and a change in capacitance on the basis of the sensed touch points,wherein the two-dimensional capacitive sensor further comprises two or more parallel electrode channels among “
M”
number of X axis sensing electrode channels or two or more parallel electrode channels among “
N”
number of Y axis sensing electrode channels;
a movement analyzing unit to sense and analyze a change of movement of the two or more touch points using information on the sensed capacitance and change in capacitance; and
a command processing unit to process a command corresponding to the change in movement,wherein the movement analyzing unit comprises;
a capacitance magnitude detecting unit to sense the magnitude of the sensed capacitance in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels;
a capacitance magnitude change detecting unit to detect a change of the detected magnitude of the capacitance over time in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels;
a capacitance magnitude change speed detecting unit to detect a second-order differential value of the capacitance magnitude in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; and
a movement pattern determining unit to determine a movement pattern of the two or more touch points using information on the magnitude of the capacitance, the change of the magnitude of the capacitance over time, and the detected second-order differential value of the capacitance magnitude,wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move, when the change of the capacitance magnitude over time is larger than a predetermined threshold value,wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move, when the change of the capacitance magnitude over time is less than a negative predetermined threshold value,wherein, when two touch points at the left and right move in a horizontal direction, the multi-touch point moving mode comprises;
a mode that all of the two touch points move outward;
a mode that all of the two touch points move inward;
a mode that the left touch point moves inward and the right touch point moves outward; and
a mode that the left touch point moves outward and the right touch point moves inward.
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Abstract
A user interface technique using a two-dimensional capacitive sensor is provided. An apparatus for sensing movement of multi-touch points includes a capacitance sensing unit sensing two or more touch points, and sensing capacitance and a change in capacitance on the basis of the sensed touch points, a movement analyzing unit sensing and analyzing a change of movement of the two or more touch points using information on the sensed capacitance and change in capacitance, and a command processing unit processing a command corresponding to the change in movement according to a result of the analysis.
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Citations
28 Claims
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1. An apparatus for sensing movement of multi-touch points using a two-dimensional capacitive sensor, the apparatus comprising:
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a capacitance sensing unit to sense two or more touch points, and to sense capacitance and a change in capacitance on the basis of the sensed touch points, wherein the two-dimensional capacitive sensor further comprises two or more parallel electrode channels among “
M”
number of X axis sensing electrode channels or two or more parallel electrode channels among “
N”
number of Y axis sensing electrode channels;a movement analyzing unit to sense and analyze a change of movement of the two or more touch points using information on the sensed capacitance and change in capacitance; and a command processing unit to process a command corresponding to the change in movement, wherein the movement analyzing unit comprises; a capacitance magnitude detecting unit to sense the magnitude of the sensed capacitance in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; a capacitance magnitude change detecting unit to detect a change of the detected magnitude of the capacitance over time in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; a capacitance magnitude change speed detecting unit to detect a second-order differential value of the capacitance magnitude in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; and a movement pattern determining unit to determine a movement pattern of the two or more touch points using information on the magnitude of the capacitance, the change of the magnitude of the capacitance over time, and the detected second-order differential value of the capacitance magnitude, wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move, when the change of the capacitance magnitude over time is larger than a predetermined threshold value, wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move, when the change of the capacitance magnitude over time is less than a negative predetermined threshold value, wherein, when two touch points at the left and right move in a horizontal direction, the multi-touch point moving mode comprises; a mode that all of the two touch points move outward; a mode that all of the two touch points move inward; a mode that the left touch point moves inward and the right touch point moves outward; and a mode that the left touch point moves outward and the right touch point moves inward. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of sensing movement of multi-touch points using a two-dimensional capacitive sensor, the method comprising:
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sensing two or more touch points, and sensing capacitance and a change in capacitance on the basis of the sensed touch points, wherein the two-dimensional capacitive sensor further comprises two or more parallel electrode channels among “
M”
number of X axis sensing electrode channels or two or more parallel electrode channels among “
N”
number of Y axis sensing electrode channels;sensing and analyzing a change of movement of the two or more touch points using information on the sensed capacitance and change in capacitance; and processing a command corresponding to the change of movement, wherein the sensing and analyzing of the change of movement of the two or more touch points using the information on the sensed capacitance and change in capacitance further comprises; sensing the magnitude of the sensed capacitance in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; detecting a change of the detected magnitude of the capacitance over time in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; detecting a second-order differential value of the capacitance magnitude in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; and determining a movement pattern of the two or more touch points using the information on the magnitude of the capacitance, the change of the magnitude of the capacitance over time, and the detected second-order differential value of the capacitance magnitude, wherein the determining of the movement pattern of the two or more touch points comprises determining a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is larger than a predetermined threshold value, wherein the determining of the movement pattern of the two or more touch points comprises determining a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is less than a negative predetermined threshold value, wherein when two touch points at the left and right move in a horizontal direction, the multi-touch point moving mode comprises; a mode that all of the two touch points move outward; a mode that all of the two touch points move inward; a mode that the left touch point moves inward and the right touch point moves outward; and a mode that the left touch point moves outward and the right touch point moves inward. - View Dependent Claims (9, 10, 11, 12, 13, 14, 21)
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15. A mobile apparatus that has a touch screen and senses movement of multi-touch points, the apparatus comprising:
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a capacitive sensor to sense two or more touch points, and to sense capacitance and a change in capacitance on the basis of the sensed touch points, wherein the two-dimensional capacitive sensor further comprises two or more parallel electrode channels among “
M”
number of X axis sensing electrode channels or two or more parallel electrode channels among “
N”
number of Y axis sensing electrode channels;a movement analyzing unit to sense and analyzing a change of movement of the two or more touch points using information on the sensed capacitance and change in capacitance; an output unit to output a command corresponding to the change of movement; and a command processing control unit to perform control to process the output command, wherein the movement analyzing unit comprises; a capacitance magnitude detecting unit to sense the magnitude of the sensed capacitance in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; a capacitance magnitude change detecting unit to detect a change of the detected magnitude of the capacitance over time in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; a capacitance magnitude change speed detecting unit to detect a second-order differential value of the capacitance magnitude in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; and a movement pattern determining unit to determine a movement pattern of the two or more touch points using information on the magnitude of the capacitance, the change of the magnitude of the capacitance over time, and the detected second-order differential value of the capacitance magnitude, wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is larger than a predetermined threshold value, wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is less than a negative predetermined threshold value, wherein when two touch points at the left and right move in a horizontal direction, the multi-touch point moving mode comprises; a mode that all of the two touch points move outward; a mode that all of the two touch points move inward; a mode that the left touch point moves inward and the right touch point moves outward; and a mode that the left touch point moves outward and the right touch point moves inward. - View Dependent Claims (16, 17, 18, 19, 20, 22)
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23. An apparatus for sensing movement of multi-touch points using a two-dimensional capacitive sensor, the apparatus comprising:
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a capacitance sensor to sense two or more touch points, and to sense capacitance and a change in capacitance on the basis of the sensed touch points, wherein the two-dimensional capacitive sensor further comprises two or more parallel electrode channels among “
M”
number of X axis sensing electrode channels or two or more parallel electrode channels among “
N”
number of Y axis sensing electrode channels; anda movement analyzer to sense and analyze a change of movement of the two or more touch points using information on the sensed capacitance and change in capacitance to determine a movement pattern, wherein the movement analyzing unit comprises; a capacitance magnitude detecting unit to sense the magnitude of the sensed capacitance in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; a capacitance magnitude change detecting unit to detect a change of the detected magnitude of the capacitance over time in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; a capacitance magnitude change speed detecting unit to detect a second-order differential value of the capacitance magnitude in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; and a movement pattern determining unit to determine a movement pattern of the two or more touch points using information on the magnitude of the capacitance, the change of the magnitude of the capacitance over time, and the detected second-order differential value of the capacitance magnitude, wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is larger than a predetermined threshold value, wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is less than a negative predetermined threshold value, wherein when two touch points at the left and right move in a horizontal direction, the multi-touch point moving mode comprises; a mode that all of the two touch points move outward; a mode that all of the two touch points move inward; a mode that the left touch point moves inward and the right touch point moves outward; and a mode that the left touch point moves outward and the right touch point moves inward. - View Dependent Claims (24)
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25. A method of sensing movement of multi-touch points using a two-dimensional capacitive sensor, the method comprising:
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sensing capacitance and a change in capacitance based on two or more sensed touch points, wherein the two-dimensional capacitive sensor further comprises two or more parallel electrode channels among “
M”
number of X axis sensing electrode channels or two or more parallel electrode channels among “
N”
number of Y axis sensing electrode channels; andsensing and analyzing a change of movement of the two or more touch points using information on the sensed capacitance and change in capacitance to determine a movement pattern, wherein the sensing and analyzing of the change of movement of the two or more touch points using the information on the sensed capacitance and change in capacitance further comprises; sensing the magnitude of the sensed capacitance in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; detecting a change of the detected magnitude of the capacitance over time in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; detecting a second-order differential value of the capacitance magnitude in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; and determining a movement pattern of the two or more touch points using the information on the magnitude of the capacitance, the change of the magnitude of the capacitance over time, and the detected second-order differential value of the capacitance magnitude, wherein the determining of the movement pattern of the two or more touch points comprises determining a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is larger than a predetermined threshold value, wherein the determining of the movement pattern of the two or more touch points comprises determining a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is less than a negative predetermined threshold value, wherein when two touch points at the left and right move in a horizontal direction, the multi-touch point moving mode comprises; a mode that all of the two touch points move outward; a mode that all of the two touch points move inward; a mode that the left touch point moves inward and the right touch point moves outward; and a mode that the left touch point moves outward and the right touch point moves inward. - View Dependent Claims (26)
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27. A mobile apparatus that has a touch screen and senses movement of multi-touch points, the apparatus comprising:
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a capacitive sensor to sense two or more touch points, and to sense capacitance and a change in capacitance on the basis of the sensed touch points, wherein the two-dimensional capacitive sensor further comprises two or more parallel electrode channels among “
M”
number of X axis sensing electrode channels or two or more parallel electrode channels among “
N”
number of Y axis sensing electrode channels; anda movement analyzer to sense and analyze a change of movement of the two or more touch points using information on the sensed capacitance and change in capacitance to determine a movement pattern, wherein the movement analyzing unit comprises; a capacitance magnitude detecting unit to sense the magnitude of the sensed capacitance in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; a capacitance magnitude change detecting unit to detect a change of the detected magnitude of the capacitance over time in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; a capacitance magnitude change speed detecting unit to detect a second-order differential value of the capacitance magnitude in each of the two or more X axis sensing electrode channels or in each of the two or more Y axis sensing electrode channels; and a movement pattern determining unit to determine a movement pattern of the two or more touch points using information on the magnitude of the capacitance, the change of the magnitude of the capacitance over time, and the detected second-order differential value of the capacitance magnitude, wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is larger than a predetermined threshold value, wherein the movement pattern determining unit determines a multi-touch point moving mode, in which all of the two or more touch points move simultaneously, when the change of the capacitance magnitude over time is less than a negative predetermined threshold value, wherein when two touch points at the left and right move in a horizontal direction, the multi-touch point moving mode comprises; a mode that all of the two touch points move outward; a mode that all of the two touch points move inward; a mode that the left touch point moves inward and the right touch point moves outward; and a mode that the left touch point moves outward and the right touch point moves inward. - View Dependent Claims (28)
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Specification