NFC Receiving System Rapid Mode Detection via Start Pattern Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing NFC systems require a lengthy and complex procedure to detect communication modes, degrading the performance of receiving devices as they need to periodically set and test multiple protocols to determine the correct mode for data reception.
Innovation Solution
A method and device that rapidly detect communication modes in NFC systems by analyzing start patterns within communication frame patterns using a predetermined sampling clock, allowing for automatic protocol detection and decoding, enabling the NFC target to receive data in various protocols such as TYPEA 106, TYPEB 106, TYPEF 212, and TYPEF 424 without additional mode-setting operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If all devices capable of receiving multiple NFC protocols are provided in an NFC target and protocols are periodically set one after another, then the NFC target can detect and receive all communication modes, but the detection time becomes relatively long and the procedure becomes complex
Solution Approach 1:
The patent applies preliminary action by pre-configuring the NFC target with all necessary protocol reception capabilities and detection circuits before actual communication occurs. The system prepares multiple protocol detection paths in advance, allowing immediate protocol identification when data is received, rather than sequentially testing each protocol during operation.
Solution Approach 2:
The patent segments the protocol detection process into independent parallel paths for different NFC protocols (TYPEA, TYPEB, FELICA). Each protocol has its own dedicated detection circuit and processing path, allowing simultaneous analysis of multiple protocols without sequential overhead, thus reducing total detection time while maintaining comprehensive protocol support.
2Adaptability or versatility
If all devices capable of receiving multiple NFC protocols are provided in an NFC target and protocols are periodically set one after another, then the NFC target can detect and receive all communication modes, but the procedure becomes complex
Solution Approach 1:
The patent segments the complex protocol detection procedure into distinct modular detection circuits for each NFC protocol type. Each segment handles a specific protocol independently with dedicated processing logic, making the overall complex system manageable through functional decomposition and enabling parallel operation of multiple protocol handlers.
Solution Approach 2:
The patent implements a universal detection framework that can handle multiple NFC protocols through a common architecture. The NFC target incorporates a multi-functional detection system that can identify and process TYPEA, TYPEB, and FELICA protocols using a unified detection mechanism, reducing procedural complexity compared to separate dedicated systems for each protocol.
3Adaptability or versatility
If the typical method for detecting NFC communication mode is used, then all communication modes can be detected, but the performance of the receiving device is degraded
Solution Approach 1:
The patent segments the receiving device into specialized protocol detection units that operate in parallel, allowing simultaneous analysis of multiple NFC protocols. This segmentation enables the device to maintain high performance by processing different protocols concurrently rather than sequentially, thus improving productivity while preserving comprehensive protocol detection capability.
Solution Approach 2:
The patent applies preliminary action by pre-establishing dedicated detection circuits and processing paths for each NFC protocol within the receiving device. This preliminary configuration eliminates the need for runtime protocol switching and testing, allowing immediate protocol identification and data reception, thereby maintaining high device performance while supporting all communication modes.
Data Source
AI summary
A method of detecting a communication mode is provided to rapidly detect which one of near field communication (NFC) protocols includes a communication frame pattern of data provided to a receiving device. The method includes receiving a communication frame pattern of data transmitted from an NFC initiator after synchronizing the communication frame pattern with a predetermined sampling clock. The detection of the communication mode may be done by analyzing a start pattern out of the communication frame pattern. Since a communication mode is rapidly detected and data is automatically received without performing an additional operation to set the communication mode, operation performance of a receiving device is improved.