Dynamic Transmission Sequence for Under-Display Fingerprint Sensors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In under-display fingerprint detection systems, the fixed sequence of information transmission from multiple sensing units via a shared bus reduces detection efficiency, necessitating improvements to optimize data transmission based on the touched areas of each sensing zone.
Innovation Solution
A fingerprint detection device and method where a processor determines a transmission sequence based on the touched area of each sensing zone, prioritizing sensing information from zones with larger touched areas to ensure efficient data transmission through a shared transmission bus, thereby optimizing fingerprint recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed transmission sequence is used for multiple sensing units, then the system structure is simple, but the detection efficiency is reduced
Solution Approach 1:
The patent implements a dynamic transmission sequence where the order of data transmission from sensing units is adjusted based on real-time touched area information. The processor determines which sensing units have larger touched areas and prioritizes their data transmission, making the transmission sequence adaptive rather than fixed, thereby improving detection efficiency without requiring complex hardware reconfiguration
Solution Approach 2:
The patent changes the transmission parameter (transmission sequence) based on the touched area parameter of each sensing unit. By monitoring the touched area and adjusting the transmission order accordingly, the system optimizes data acquisition efficiency while maintaining a simple shared bus structure, resolving the contradiction between efficiency and complexity
2Productivity
If sensing units transmit information in a fixed sequence, then the transmission bus structure is simple, but the data transmission efficiency is reduced
Solution Approach 1:
The patent performs preliminary assessment of touched areas for each sensing unit before initiating data transmission. By pre-identifying which sensing units have larger touched areas and should be prioritized, the system prepares the optimal transmission sequence in advance, avoiding delays during actual data transmission and improving overall efficiency while keeping the bus structure simple
Data Source
AI summary
A fingerprint detection device comprises a plurality of fingerprint sensing circuits and a processor. The plurality of fingerprint sensing circuits is corresponding to a plurality of sensing zones respectively. The processor is electrically coupled to the fingerprint sensing circuits through a shared transmission bus. The processor is configured to receive information of a touched area of each of the sensing zones, determine a transmission sequence according to the touched area of each of the sensing zones, and control the fingerprint sensing circuits to transmit sensing information of the corresponding sensing zones to the processor through the shared transmission bus according to the transmission sequence.