Invention Grant
US08120463B2 RFID protocol for improved tag-reader communications integrity
有权
RFID协议用于改进标签读取器通信的完整性
- Patent Title: RFID protocol for improved tag-reader communications integrity
- Patent Title (中): RFID协议用于改进标签读取器通信的完整性
-
Application No.: US11619902Application Date: 2007-01-04
-
Publication No.: US08120463B2Publication Date: 2012-02-21
- Inventor: Catherine Graichen , Timothy Lee Johnson
- Applicant: Catherine Graichen , Timothy Lee Johnson
- Applicant Address: US MD Bethesda
- Assignee: Lockheed Martin Corporation
- Current Assignee: Lockheed Martin Corporation
- Current Assignee Address: US MD Bethesda
- Agency: Scully, Scott, Murphy & Presser, PC
- Main IPC: H04Q5/22
- IPC: H04Q5/22

Abstract:
The present invention provides a means by which the reliability of communication between any RFID reader and tag in an RFID system is improved by using an “interleaved parity” algorithm. The improved reliability is obtained by computing, on one RFID device, an interleaved parity code for a message, sending the message with the code from the RFID device, receiving the message on the other RFID device which computes another interleaved parity code for the received message. The two parity codes are compared and if the codes are the same, the message can be parsed and interpreted. If the codes indicate that one bit of the message is incorrect, the incorrect bit is corrected and the message is parsed and interpreted. Otherwise, a request for a new message is sent to the RFID device, and, if appropriate, an indication of two erroneous bits is also sent.
Public/Granted literature
- US20080165003A1 RFID PROTOCOL FOR IMPROVED TAG-READER COMMUNICATIONS INTEGRITY Public/Granted day:2008-07-10
Information query