Coordinate input apparatus, method thereof, and storage medium

A coordinate input apparatus which detects a position pointed in a region surrounded by at least four sensor units, based on detection outputs from two sensor units corresponding to the pointed position out of the at least four sensor units, an arithmetic control circuit of each sensor bar controls the two sensor units, the operation between the arithmetic control circuits is executed by master-slave, comprising:

• a input unit configured to input a plurality of directions corresponding to remaining sensor units detected by the at least four sensor units;
• a calculation unit configured to calculate correction data based on the plurality of directions corresponding to the remaining sensor units detected by the at least four sensor units;
• and wherein said a storage unit configured to store, in a memory unit, the correction data calculated based on the plurality of directions corresponding to the remaining sensor units detected by one of the four sensor units, wherein the calculation unit is configured to calculate the pointed position based on the detection outputs from two sensor units corresponding to the pointed position, and on the correction data stored in the memory unit.

A coordinate input method of detecting a position pointed in a region surrounded by at least four sensor units, based on detection outputs from two sensor units corresponding to the pointed position out of the at least four sensor units, an arithmetic control circuit of each sensor bar controls the two sensor units, the operation between the arithmetic control circuits is executed by master-slave, comprising:

• inputting a plurality of directions corresponding to a common position detected by the at least four sensor units;
• calculating correction data based on the plurality of directions corresponding to the common position detected by the at least four sensor units;
• storing the correction data in a memory unit, and calculating the pointed position based on the detection outputs from two sensor units corresponding to the pointed position, and on the correction data values stored in the memory unit.

A storage medium storing a computer program for detecting a position pointed in a region surrounded by at least four sensor units, based on detection outputs from two sensor units corresponding to the pointed position out of the at least four sensor units, an arithmetic control circuit of each sensor bar controls the two sensor units, the operation between the arithmetic control circuits is executed by master-slave, the computer program comprising:

• inputting a plurality of directions corresponding to a common position detected by the at least four sensor units;
• calculating correction data based on the plurality of directions corresponding to the common position detected by the at least four sensor units:
• storing the correction data in a memory unit, and calculating the pointed position based on the detection outputs from two sensor units corresponding to the pointed position, and on the correction data stored in the memory unit.