Title:
FINGERPRINT DETECTION CODING APPARATUS, FINGERPRINT DETECTION SYSTEM AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/082323
Kind Code:
A1
Abstract:
The present disclosure relates to the technical field of fingerprint detection. Disclosed are a fingerprint detection coding apparatus, a fingerprint detection system and an electronic device. The fingerprint detection coding apparatus comprises: a fingerprint detection chip, wherein the fingerprint detection chip comprises a coding signal generation module and an edge time adjustment module, the coding signal generation module is used for generating a spread spectrum random coding signal, and the edge time adjustment module is used for adjusting an edge time of the spread spectrum random coding signal to obtain a dynamic edge coding signal. Using a spread spectrum random coding signal to drive a fingerprint detection chip can effectively reduce the EMI of the coding signal to radio frequency communication of a mobile device, and using an edge time adjustment module to increase the edge time of the spread spectrum random coding signal can further reduce the interference.
Inventors:
XIE HAO (CN)
HU HEYUN (CN)
HU HEYUN (CN)
Application Number:
PCT/CN2018/112038
Publication Date:
April 30, 2020
Filing Date:
October 26, 2018
Export Citation:
Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
G06K9/00; H04B1/69; H04B1/719
Foreign References:
| CN105488496A | 2016-04-13 | |||
| CN107980141A | 2018-05-01 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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