Patent ID: 8063740
Filing Date: 2011-11-22
Classification: G06K,H02K

Abstract:
1. A method for an interface converter operable to control a utility of a Radio Frequency Identification (RFID) reader that can communicate with an RFID tag, the tag having received a first command, and backscattered a first reply responsive to the first command, the tag using a first delay before backscattering the first reply after receiving the first command, the utility operable to cause the RFID tag to reply using a changed reply timing by causing the reader to transmit to the tag a custom timing command, the tag then backscattering a second reply that encodes the same functional content as the first reply, the tag using a second delay before backscattering the second reply after receiving a most recent command prior to backscattering the second reply, the second delay different from the first delay responsive to receiving the custom timing command, the method comprising: receiving a high down transmission to control the utility in a first manner; and responsive to the high down transmission, transmitting a low down transmission to control the utility in the first manner, the low down transmission being encoded differently than the high down transmission at least in part.