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

Claim 0:
1. 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:
accumulating the grayscale value of each of the detection units in the detection block to obtain a block grayscale value; and
determining that the detection block is in the covered state, in response to the block grayscale value is not greater than a gray detection 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 if the number is not less than a coverage block threshold.