Collision prevention identifying method for HF-RF indentifying system

A radio frequency identification system and identification method technology, applied in the identification field of high-frequency radio frequency identification system anti-collision, can solve the problems of very high synchronization requirements, long reading distance, difficulty in completing the binary search method, etc., to improve anti-interference performance, avoid the effect of interference

Active Publication Date: 2005-03-09
SHANGHAI FUDAN MICROELECTRONICS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this patented technology involves improving the ability of an electronic device called Transponders (transceivers) that use Time Slotted Signals (TS). By combining these TS with Fast Fourier transform techniques or other methods like Spread Spectrum Modulated Laser Beams (SSM), they are able to improve their communication capabilities even at higher frequencies than traditional systems without requiring any synchronized clocks between them. This makes possible applications such as Radiofrequeney Identification System (RFID)-based security measures.

Problems solved by technology

This patented technical problem addressed by the present patents relates to improving the performance of digital systems while avoiding issues like synchronism caused by simultanous requests.

Method used

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  • Collision prevention identifying method for HF-RF indentifying system
  • Collision prevention identifying method for HF-RF indentifying system
  • Collision prevention identifying method for HF-RF indentifying system

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Embodiment Construction

[0075] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0076] The present invention proposes a high-frequency radio frequency identification system anti-collision identification method, the system includes a reader and at least one transponder, characterized in that the method includes the following steps:

[0077] a) wireless communication is established between said reader and said transponder using a specific form of radio signal consisting of a logical signal part and a time slot part, the logical signal part being used to transmit the reader to the transponder Various commands or information of the transponder, the time slot part is used for the transponder to perform backscatter modulation to transmit a binary response signal to the reader;

[0078] b) Based on the wireless communication in step (a), the initial state, general inquiry state, general search state, waiting state, and confirm

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Abstract

Said system includes a reader and at least a responder. It is characterized by that a wireless signal with specific form is used to create wireless communication between the reader and responder, said wireless signal is formed from logic signal portion and time slot portion, the logic signal portion is used for transferring various commands or informations of reader to responder, and time slot portion is used for responder to make back scattering modulation and transfer one-column binary bit response signal to reader; it uses the wireless communication as basis, the reader can transfer correspondent command and/or information to responder, and can make the responder implement correspondent conversion between initial state, general inquiry state, general search state, waiting state and confirmation state and execute search and or inquiry action of reader to responder so as to implement identification of reader to responder.

Description

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Claims

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Application Information

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Owner SHANGHAI FUDAN MICROELECTRONICS GROUP
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