Information input device, image forming apparatus, position determination method, and position determination program
First Claim
1. An information input device comprising:
- a touch panel in which a display screen to display operations information is integrated with a sensor unit, and to which the operations information is input when the display screen is touched with a predetermined unit, the sensor unit including plural sensors to measure a capacitance at a front surface of the display screen, the plural sensors being staggered such that three of the plural sensors adjacent to each other are arranged at positions corresponding to apices of a regular triangle; and
a position determination unit that determines a position on the display screen touched with the predetermined unit in accordance with levels of capacitances detected with the three adjacent sensors, the levels of capacitances detected being associated with one of a plurality of predefined areas of a region formed by the three adjacent sensors to determine the touched position, each of the predefined areas being defined by respective capacitance detection levels for the three adjacent sensors.
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Accused Products
Abstract
Disclosed is an information input device including a touch panel in which a display screen for displaying operations information is integrated with a sensor unit and to which the operations information is input when the display screen is touched with a predetermined unit, the sensor unit having plural sensors, which are capable of measuring a capacitance at a front surface of the display screen, arranged in a staggered manner such that three of the plural sensors adjacent to each other are arranged at positions corresponding to apices of a regular triangle; and a position determination unit that determines a position touched with the predetermined unit on the display screen in accordance with levels of the capacitances detected with the three adjacent sensors in a region of the regular triangle formed by the three adjacent sensors among the plural sensors constituting the sensor unit.
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Citations
12 Claims
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1. An information input device comprising:
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a touch panel in which a display screen to display operations information is integrated with a sensor unit, and to which the operations information is input when the display screen is touched with a predetermined unit, the sensor unit including plural sensors to measure a capacitance at a front surface of the display screen, the plural sensors being staggered such that three of the plural sensors adjacent to each other are arranged at positions corresponding to apices of a regular triangle; and a position determination unit that determines a position on the display screen touched with the predetermined unit in accordance with levels of capacitances detected with the three adjacent sensors, the levels of capacitances detected being associated with one of a plurality of predefined areas of a region formed by the three adjacent sensors to determine the touched position, each of the predefined areas being defined by respective capacitance detection levels for the three adjacent sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An image forming apparatus including an information input device to which operations information is input through operations on a touch panel, the information input device comprising:
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a display screen to display operations information integrated with a sensor unit in the touch panel, the sensor unit including plural sensors to measure a capacitance at a front surface of the display screen, the plural sensors being staggered such that three of the plural sensors adjacent to each other are arranged at positions corresponding to apices of a regular triangle; and a position determination unit that determines a position on the display screen touched with a predetermined unit in accordance with levels of the capacitances detected with the three adjacent sensors, the levels of capacitances detected being associated with one of a plurality of predefined areas of a region formed by the three adjacent sensors to determine the touched position, each of the predefined areas being defined by respective capacitance detection levels for the three adjacent sensors.
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11. A position determination method in which a computer determines an operated position on a touch panel of an information input device including the computer, to which operations information is input through operations on the touch panel, the information input device further including a display screen to display operations information integrated with a sensor unit in the touch panel, the sensor unit including plural sensors to measure a capacitance at a front surface of the display screen, the plural sensors being staggered such that three of the plural sensors adjacent to each other are arranged at positions corresponding to apices of a regular triangle, the method comprising:
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determining that the display screen is touched and the operations information is input when one of the sensors detects a level of the capacitance greater than or equal to a threshold level; comparing the levels of the capacitances detected with two adjacent sensors with the threshold level relative to the one sensor that detects the level of the capacitance greater than or equal to the threshold level; and determining the touched position on the display screen in accordance with the level of the capacitance detected with the one sensor and the levels of the capacitances detected with the two adjacent sensors based on a comparison result in said comparing, the levels of capacitances detected being associated with one of a plurality of predefined areas of a region formed by the three adjacent sensors to determine the touched position, each of the predefined areas being defined by respective capacitance detection levels for the three adjacent sensors. - View Dependent Claims (12)
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Specification