Method and system for secure communication
First Claim
Patent Images
1. An RFID tag reading system including a first transmitter, and a tag reader including a receiver, wherein:
- the first transmitter transmits noise signals across a range of communication channels used by the receiver of the tag reader and sends to the receiver information about the noise signals over a communication channel different from said range of communication channels,the receiver of the tag reader is adapted to receive a message transmission by an RFID tag being read by the reader, the message transmission being transmitted over one or more of said range of communication channels, and to distinguish the message from the noise signal using the information from the first transmitter about the noise signals.
1 Assignment
0 Petitions
Accused Products
Abstract
A communications system including a receiver and a first transmitter, wherein the first transmitter transmits noise signals across a range of communication channels used by the receiver, the receiver being adapted to receive a transmission transmitted by a second transmitter over one or more of said range of communication channels, and to distinguish the transmission made by the second transmitter from the noise signals using information from the first transmitter about the noise signals.
8 Citations
25 Claims
-
1. An RFID tag reading system including a first transmitter, and a tag reader including a receiver, wherein:
-
the first transmitter transmits noise signals across a range of communication channels used by the receiver of the tag reader and sends to the receiver information about the noise signals over a communication channel different from said range of communication channels, the receiver of the tag reader is adapted to receive a message transmission by an RFID tag being read by the reader, the message transmission being transmitted over one or more of said range of communication channels, and to distinguish the message from the noise signal using the information from the first transmitter about the noise signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of securing communications between an RFID tag and an RFID tag reader, the method including:
-
transmitting a message from the RFID tag over one or more of a range of communication channels; transmitting noise from a transmitter over said range of communications channels; passing to a receiver of the RFID tag reader information about the noise from the transmitter, the information about the noise being passed to the receiver over a communication channel different from said range of communication channels; receiving the transmitted message and the transmitted noise at the receiver of the RFID tag reader; and using the information about the noise from the transmitter to retrieve the message by distinguishing the message from the noise in the received transmission. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. An RFID tag reading system comprising:
-
a processing system, comprising at least one computer processor, the processing system being configured to; receive information from a first transmitter about noise bits transmitted by the first transmitter across a range of communication channels used by a tag reader of the tag reading system, the information about the noise bits being received using communication channel different from the range of communications channels; receive a transmission comprising message bits transmitted by an RFID tag over one or more of said range of communication channels, the message bits of the transmission being interleaved with the noise bits; and distinguish the message bits from the noise bits using the information from the first transmitter about the noise bits. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
-
Specification