INPUT DEVICE AND INPUT OPERATION DETERMINATION METHOD

PROBLEM TO BE SOLVED: To provide an input device for an electronic apparatus whose input operation is very comfortable.SOLUTION: An input control part 1c includes: a sensor array 11 in which touch sensors 12 are arranged in a two-dimensional state; an input information detection circuit 13 that outputs a detection operation signal for each first touch sensor group and to which a detection signal is input for each second touch sensor group; and a control circuit unit 20 that instructs the output of the detection operation signal to the input information detection circuit 13, to which input information in response to the detection signal form the input information detection circuit 13 is input, that determines whether input operation is made or not and the position of the touch sensor 12 subjected to input operation, based on inputted input information, in order to output function information corresponding to the position of the touch sensor 12 subjected to input operation to an electronic apparatus 90. In the control circuit unit 20, detection sensitivity is preset based on the ratio of the connection number of the second touch sensor to the maximum connection number thereof.