Common-mode interference elimination method for scanning detection device

(canceled)

(canceled)

A common-mode interference elimination method for a scanning detection device, wherein a scanning period of the scanning detection device is set to comprise N sub-periods each of which is (K+0.5) times of a period of an interference signal, an Mth sub-period and an (M+1)th sub-period respectively comprising scanning stages with a same length and a same scanning polarity, N is a positive even number, K is a natural number, and M=1, 3, . . . , and N−1, to make influence of the interference signal during a scanning process on a scanning result be self-cancelled;

• and
• the same scanning polarity means that the scanning polarity of a scanning stage in the Mth sub-period and the scanning polarity of a corresponding scanning stage in the (M+1)th sub-period are positive, or, the scanning polarity of a scanning stage in the Mth sub-period and the scanning polarity of a corresponding scanning stage in the (M+1)th sub-period are negative, or, the scanning polarity of a scanning stage in the Mth sub-period and the scanning polarity of a corresponding scanning stage in the (M+1)th sub-period is zero.

14-15. (canceled)

(canceled)

(canceled)

A common-mode interference elimination method for a scanning detection device, wherein

• a scanning period of the scanning detection device is set to comprise N sub-periods each of which is K times of a period of an interference signal, an Mth sub-period and an (M+1)th sub-period respectively comprising scanning stages with a same length and a same scanning polarity, N is a positive even number, K is a natural number, and M=1, 3, . . . , and N−1, to make influence of the interference signal during a scanning process on a scanning result be self-cancelled;
• and
• the opposite scanning polarities mean that the scanning polarity of a scanning stage in the Mth sub-period is positive and the scanning polarity of a corresponding scanning stage in the (M+1)th sub-period is negative, or, the scanning polarity of a scanning stage in the Mth sub-period is negative and the scanning polarity of a corresponding scanning stage in the (M+1)th sub-period is positive, or, the scanning polarity of a scanning stage in the Mth sub-period is zero and the scanning polarity of a corresponding scanning stage in the (M+1)th sub-period is zero.

24-25. (canceled)

(canceled)

(canceled)