Finger print sensor and auxiliary processor integration in an electronic device

摘要

A system includes a fingerprint sensor and an auxiliary processor. The auxiliary processor is operable to arm the fingerprint sensor prior to the auxiliary processor entering a low power or sleep mode. The fingerprint sensor can detect a finger proximately located with the fingerprint sensor, capture and store fingerprint data from the finger, perform at least one pre-processing step after capturing the fingerprint data from the finger while the auxiliary processor is in the low power or sleep mode, and after the at least one pre-processing step and upon receiving a request from the auxiliary processor for the finger print data deliver the fingerprint data to the auxiliary processor. The auxiliary processor can compare the fingerprint data to reference data and determine whether the fingerprint data substantially matches the reference data.

主权项

1. A system, comprising:
a fingerprint sensor; an application processor operable to enter a low power or sleep mode; and a secondary processor operable to arm the fingerprint sensor; the fingerprint sensor to:
detect a finger proximately located with the fingerprint sensor;capture and store fingerprint data from the finger;perform at least one pre-processing step after capturing the fingerprint data from the finger while the application processor is in the low power or sleep mode; andafter the at least one pre-processing step and upon receiving a request from the application processor for the fingerprint data deliver the fingerprint data to the application processor; and the application processor to:
compare the fingerprint data to reference data; anddetermine whether the fingerprint data substantially matches the reference data.