Patent ID: 8749407

Claim:
A method for detecting hidden ghost keys from a plurality of keys, and the plurality of keys are installed on a plurality of crossing positions of a keyboard matrix formed by crossing a plurality of row scanning lines and a plurality of column scanning lines, and the method comprising: selecting a plurality of preset keys from the plurality of keys; based on that at least one ghost key and the selected plurality of preset keys share the same row scanning lines among the plurality of row scanning lines and the same column scanning lines among the plurality of column scanning lines, detecting at least one ghost key on the keyboard matrix according to the selected plurality of preset keys; based on a plurality of examining keys including at least one of the detected ghost keys, selecting the plurality of examining keys from the selected plurality of preset keys and the detected ghost keys; and based on at least one hidden ghost key and the selected examining keys sharing the same row scanning lines among the plurality of row scanning lines and the same column scanning lines among the plurality of column scanning lines, detecting at least one hidden ghost key on the keyboard matrix according to the plurality of examining keys.