Patent ID: 8427315
Filing Date: 2013-04-23
Classification: G06K,H04L

Abstract:
1. An operational processing block for an RFID reader, the RFID reader further including a buffer, the RFID reader used to communicate with at least one RFID tag according to a communication protocol, the operational processing block causing the RFID reader to cooperate with the at least one RFID tag to reduce latency within the reader-tag transaction, the operational processing block configured to: transmit a first reader command; receive a tag response responsive to the first reader command; calculate a second reader command responsive to the tag response; transmit the second reader command; store the second reader command in the reader's buffer; receive a tag response responsive to the second reader command; calculate a third reader command responsive to the tag response; store the third reader command in reader's buffer; transmit the third reader command; receive a tag response; if the received tag response corresponds to the second reader command, transmit the second reader command originating from the reader's buffer; or if the received tag response corresponds to the third reader command, transmit the third reader command originating from the reader's buffer; or if the received tag response does not correspond to any reader command held in the reader's buffer, calculate a reader command responsive to the tag response; transmit the reader command responsive to the tag response; and store the corresponding reader command in the reader's buffer.