Patent ID: 11868550
Assignee: JAPAN DISPLAY INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. An input detection system comprising:
a detection device including a plurality of detection electrodes arrayed in a detection region; and
an input support device including
a first input support electrode,
a second input support electrode provided so as to be movable on a concentric circle about a rotating axis overlapping with the first input support electrode, and
a coupling portion that electrically couples the first input support electrode and the second input support electrode,

wherein
a position of the rotating axis of the input support device is fixed to the detection region of the detection device,
in detection of the second input support electrode:
a reference potential is supplied to one of the detection electrodes, the one corresponding to the first input support electrode; and
a drive signal is supplied to another one of the detection electrodes, the another one of the detection electrodes corresponding to the second input support electrode,

the input detection system has a calibration mode,
in the calibration mode, baselines containing output signals from the detection electrodes corresponding to the second input support electrode at an initial position are acquired,
in the detection of the second input support electrode after the calibration mode, the second input support electrode is detected based on the output signals output from the detection electrodes corresponding to the second input support electrode or pieces of differential data between the output signals and the baselines, and
in the calibration mode, a position of a detection electrode that has an output signal having a greatest value relative to an average value of the output signals output from the detection electrodes corresponding to the second input support electrode is set to an initial position of the second input support electrode.