Coordinate input device and touch panel device

摘要

A coordinate input device and a touch panel device determine a correction value with a plurality of output values obtained from a plurality of sensors arranged in a touch panel based on the output value of a 1st peak sensor that outputs the largest output value, the output value of a 2nd peak sensor having the second largest output value, the output value of a 3rd peak sensor having the third largest output value, and the output value of a 4th peak sensor having the fourth largest output value.

主权项

1. A coordinate input device for determining a coordinate of an overlapping position of an object to a touch panel, comprising:
a peak sensor detection unit for comparison of respective magnitudes of output values obtained from a plurality of sensors arranged in the touch panel in order to select on the basis of the magnitudes of the output values a 1st peak sensor which had the largest output value; a correction value calculation unit for determination of a correction value on the basis of information of an output value of the 1st peak sensor detected by the peak sensor detection unit and information of an output value of a peripheral sensor of the 1st peak sensor; and a coordinate calculation unit for determination of a detailed coordinate of the overlapping position with the correction value calculated by the correction value calculation unit, wherein the correction value calculation unit; selects a 2nd peak sensor, which is an individual sensor arranged in a separate position different from that of the 1st peak sensor, having the second largest output value next to the output value of the 1st peak sensor and a 3rd peak sensor, which is an individual sensor arranged in a separate position different from the 1st and 2nd peak sensors, having the third largest output value from sensors on both ends of the 1st peak sensor, selects a 4th peak sensor, which is an individual sensor arranged in a separate position different from the 1st, 2nd and 3rd peak sensors, having the fourth largest output value on the basis of a position of the 2nd peak sensor, and determines the correction value on the basis of the output value of the 1st peak sensor, the output value of the 2nd peak sensor, the output value of the 3rd peak sensor, and the output value of the 4th peak sensor.