METHOD FOR PREVENTING SIGNAL COLLISION IN RADIO FREQUENCY IDENTIFICATION SYSTEM AND RADIO FREQUENCY IDENTIFICATION TAG USED THEREOF
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United States of America Patent
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Issued Date -
Mar 4, 2010
app pub date -
Aug 28, 2008
filing date -
Aug 28, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for preventing signal collision in radio frequency identification (RFID) system through random code timing is disclosed. The RFID system includes one or more RFID reading device to receive respective tag information from a plurality of RFID tags. Multiple RFID tags of the RFID system each includes a microprocessor connected to a random code generation unit, a power supply unit, a memory unit and a radio frequency transceiver module. The memory unit stores the respective tag information that contains a tag identification code. The microprocessor of the RFID tag issues a base number or uses the tag identification code to generate a random code and a tag signal is transmitted to the RFID reading device in accordance with the random code so generated.
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