Patent ID: 11861935
Assignee: SILEAD INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 16:
17. A fingerprint detection method for applying to a fingerprint module, comprising:
dividing a detection area of the fingerprint module into a plurality of detection blocks, wherein each of the detection blocks comprises a plurality of detection units, and each of the detection units is corresponding to a grayscale value;
scanning at least part of the detection blocks to obtain the grayscale values;
determining whether each of the detection blocks is in a covered state based on the grayscale values, comprising:
determining whether each of the detection units is covered based on the grayscale value thereof; and
counting a number of the covered detection units, and determining that the detection block is in the covered state in response to the number of the covered detection units is not less than a coverage unit threshold; and

counting a number of the detection blocks in the covered state, and sending a collection request to a host to inform the host to obtain a fingerprint image in response to the number of the detection blocks in the covered state is not less than a coverage block threshold.