Huawei technologies co., ltd. (20240195454). Near Field Communication NFC Apparatus and Open-Loop Control Method simplified abstract
Contents
- 1 Near Field Communication NFC Apparatus and Open-Loop Control Method
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 Near Field Communication NFC Apparatus and Open-Loop Control Method - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Key Features and Innovation
- 1.6 Potential Applications
- 1.7 Problems Solved
- 1.8 Benefits
- 1.9 Commercial Applications
- 1.10 Prior Art
- 1.11 Frequently Updated Research
- 1.12 Questions about NFC Technology
- 1.13 Original Abstract Submitted
Near Field Communication NFC Apparatus and Open-Loop Control Method
Organization Name
Inventor(s)
Xuesong Chen of Singapore (SG)
Thengtee Yeo of Singapore (SG)
Near Field Communication NFC Apparatus and Open-Loop Control Method - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240195454 titled 'Near Field Communication NFC Apparatus and Open-Loop Control Method
Simplified Explanation
The patent application describes a near-field communication (NFC) apparatus that extracts the clock signal from an NFC card reader, tracks its frequency, and generates a carrier signal for communication.
- Clock extractor recovers clock signal from NFC card reader.
- Digital phase-locked loop tracks frequency of clock signal.
- Digital baseband chip modulates signal based on clock signal.
- Controller detects frequency or phase of clock signal and controls phase-locked loop accordingly.
Key Features and Innovation
- Clock recovery from NFC card reader signal.
- Frequency tracking for stable communication.
- Load modulation for signal generation.
- Adaptive control based on clock signal characteristics.
Potential Applications
The technology can be used in various NFC applications such as contactless payments, access control systems, and data transfer between devices.
Problems Solved
- Ensures accurate clock recovery for reliable communication.
- Improves frequency stability for consistent performance.
- Enables efficient load modulation for signal transmission.
Benefits
- Enhanced reliability in NFC communication.
- Improved signal quality and stability.
- Better control over communication parameters.
Commercial Applications
- Contactless payment systems in retail.
- Access control systems in buildings.
- Data transfer applications in IoT devices.
Prior Art
Readers can explore prior patents related to clock recovery in NFC systems, frequency tracking techniques, and load modulation methods in communication systems.
Frequently Updated Research
Researchers are constantly working on improving clock recovery algorithms, frequency tracking mechanisms, and modulation techniques in NFC technology.
Questions about NFC Technology
How does NFC technology differ from RFID technology?
NFC technology allows for two-way communication between devices, while RFID is typically one-way communication for identification purposes.
What are the security implications of NFC technology?
NFC technology can be vulnerable to eavesdropping and data interception, so encryption and authentication protocols are crucial for secure communication.
Original Abstract Submitted
a near-field communication (nfc) apparatus includes a clock extractor configured to perform clock recovery based on a first carrier signal sent by an nfc card reader to obtain a field clock signal; a digital phase-locked loop configured to perform frequency tracking on the field clock signal to output a first clock signal; a digital baseband chip configured to perform load modulation based on the first clock signal to generate a second carrier signal; and a controller configured to detect a frequency or a phase of the field clock signal, and selectively perform open-loop control on the digital phase-locked loop based on a detection result.
