Patent ID: 11967168
Assignee: NOVATEK MICROELECTRONICS CORP.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method of fingerprint image generation for saving memory comprising:
generating a first fingerprint image of an original data size according to a plurality of first analog sensing signals which are read from a fingerprint sensor array when a first exposure time elapses after a start of an exposure period;
storing the first fingerprint image represented by a first data size which is equivalent to or smaller than the original data size;
generating a second fingerprint image of the original data size according to a plurality of second analog sensing signals which are read from the fingerprint sensor array when a second exposure time elapses after the start of the exposure period, when the length of the second exposure time is longer than the length of the first exposure time and the second exposure time ends after the first exposure time ends; and
storing the second fingerprint image represented by a compressed data size smaller than the original data size.