Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for calibrating faulty wires of capacitive fingerprint acquisition systems and method for self-repairing faulty wires of capacitive fingerprint acquisition systems

A fingerprint collection and calibration method technology, which is applied in the directions of printing image collection, acquisition/organization of fingerprints/palmprints, character and pattern recognition, etc. Consistency etc.

Inactive Publication Date: 2017-09-08
JIANGSU BRMICO ELECTRONICS
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the current manufacturing conditions, it is impossible to guarantee the consistency of these thousands of semiconductor device "flat panels". There are bad lines in the fingerprint module, these bad line areas cannot collect images normally, and always show a certain gray value

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for calibrating faulty wires of capacitive fingerprint acquisition systems and method for self-repairing faulty wires of capacitive fingerprint acquisition systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0026] Described in the present invention is a kind of calibration method of capacitive fingerprint collection system bad line, such as figure 1 As shown, it specifically includes the following steps:

[0027] 1) Calculate the average grayscale of the entire fingerprint image and the average grayscale of each row;

[0028] 2) If the average grayscale of the entire fingerprint image is greater than the threshold A or less than the threshold B, the overall image effect of the judging module does not meet the mass production standard, and it is judged as a defective product, and there is no need for subsequent bad line detection and repair steps, otherwise proceed Step (3);

[0029] 3) If the ro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for calibrating faulty wires of capacitive fingerprint acquisition systems and a method for self-repairing the faulty wires of the capacitive fingerprint acquisition systems. According to the methods disclosed by the invention, the faulty wires caused by bad processes or process constraint conditions are automatically calibrated and automatically self-repaired, and the positions of the faulty wires do not need to be manually calibrated, so that the algorithm amount is small, the operation speed is high and the applicability is high.

Description

technical field [0001] The invention relates to a calibration method for a broken line of a capacitive fingerprint collection system and a self-repairing method thereof. Background technique [0002] Compared with optical fingerprint sensors, capacitive fingerprint sensors have the advantages of better image acquisition effect, better recognition of dry and wet fingers, and anti-fingerprint residue. They are widely used in mobile phones, fingerprint locks, fingerprint access control and other fields. [0003] The acquisition panel of the capacitive fingerprint sensor is a "flat panel" integrated with tens of thousands of semiconductor devices. The finger is attached to it and forms the other side of the capacitor. Due to the unevenness of the finger plane, the convex and concave points touch the flat panel. The actual distance is different, and the resulting capacitance value is also different. According to this principle, the device will collect the different values ​​colle...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1306
Inventor 周斌张飞飞卢孟
Owner JIANGSU BRMICO ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com