Patent Number: 8,717,147

Title: Passive RFID system and method

Abstract: Disclosed are a passive RFID (Radio Frequency Identification) system and method capable of recognizing a great deal of tags at a high speed. A reader of a passive RFID system, including: a processor dividing slots and subchannels to configure a round, recognizing subchannels that are not involved in a collision and interference by the slots, and changing the subchannels that are not involved in a collision and interference, into a sleep state; a transmission unit encoding a command generated through the processor, performing an amplitude jitter modulation on the encoded command, and transmitting the modulated command; and a reception unit acquiring and demodulating tag signals received through a plurality of subchannels by the slots, and providing the demodulated tag signals to the processor.

Inventors: Bae; Ji Hoon (Daejeon, KR), Quan; Cheng Hao (Daejeon, KR), Lee; Dong Han (Daejeon, KR), Park; Chan Won (Daejeon, KR), Choi; Won Kyu (Daejeon, KR), Cho; Kwang Soo (Daejeon, KR), Park; Man Sik (Daejeon, KR), Choi; Gil Young (Daejeon, KR), Chae; Jong Suk (Daejeon, KR)

Assignee: Electronics and Telecommunications Research Institute

International Classification: H04Q 5/22 (20060101)

Expiration Date: 5/06/12018