Invention Grant
- Patent Title: Method of communication in a radio frequency identification system
- Patent Title (中): 射频识别系统中的通信方法
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Application No.: US09955345Application Date: 2001-09-18
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Publication No.: US06763996B2Publication Date: 2004-07-20
- Inventor: Patrick L. Rakers , Timothy James Collins , Richard Stanley Rachwalski , Michael L. Bushman
- Applicant: Patrick L. Rakers , Timothy James Collins , Richard Stanley Rachwalski , Michael L. Bushman
- Main IPC: G06F1700
- IPC: G06F1700

Abstract:
In accordance with the present invention, a radio frequency identification (RFID) device comprises a plurality of data fields. The RFID device transmits a data symbol from a data field, receives an acknowledgement symbol, and compares the transmitted data symbol to the received acknowledgement symbol. The RFID device repeats these steps until data transmission is complete as long as each transmitted data symbol is equivalent to a corresponding received acknowledgement symbol; otherwise, the RFID device maintains the data field from which the last data symbol was transmitted, and temporarily suspends data transmission. When the RFID receives a request for RFID devices temporarily suspended in a given data field to resume data transmission, if the given data field in the request is equivalent to the data field that was maintained, the RFID device repeats the steps above starting with the first symbol in the data field that was maintained.
Public/Granted literature
- US20030052161A1 Method of communication in a radio frequency identification system Public/Granted day:2003-03-20
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