Patent ID: 9135480
Filing Date: 2015-09-15
Classification: G06K,G07B,G08B

Abstract:
1. An interrogator for communication with RFID tags having transmitter components for processing transmit signals representing a plurality of communication protocols along a transmitter path, and receiver components for processing received signals for the plurality of communication protocols along a receiver path, said interrogator comprising: an encoder generating first and second test signals having bits for the plurality of protocols and transmitting said test signals through each of the transmitter components along the transmitter path and through each of the receiver components along the receiver path; a decoder for receiving said bits of said test signals from a last component in one of the transmitter path or receiver path; and a processor comparing said test signals generated by said encoder with said received bits, and determining that the transmitter and receiver components are operating properly if all of said bits of the test signals generated by said encoder match all of said received bits, wherein said transmitter transmits a first broadcasted signal corresponding to a first communication protocol through an antenna, a second broadcasted signal corresponding to a second communication protocol through said antenna, said first test signal corresponding to said first communication protocol directly to said receiver components, bypassing said antenna; and said second test signal corresponding to said second communication protocol directly to said receiver components, bypassing said antenna.