Patent ID: 9202157
Filing Date: 2015-12-01
Classification: G06K

Abstract:
1. An RFID tag with an improved communication between an external logic element conductively connected to the RFID tag and an interrogator, wherein an antenna is connected to a memory access arbiter in the RFID tag, wherein the memory access arbiter on one side is connected to a non-volatile memory and on another side is connected through a serial peripheral interface to the external logic element, wherein the memory access arbiter is connected to a unique address space, wherein the unique address space comprises the non-volatile memory, a transferred data memory and a status-information memory storing information on the status of the transferred data memory, wherein the transferred data memory and the status-information memory are volatile memories, wherein the transferred data memory is designed to store data which are transferred from the external logic element into the RFID tag, wherein the RFID tag comprises a controlled switched circuit and a battery is connected to the RFID tag, wherein the external logic element is connected through the controlled switched circuit of the RFID tag to a power supply from an interrogator radio-frequency radiation field as well as to the battery, which is an external source to supply power to the RFID tag, wherein an automatic selection of the power supply mode is available to the external logic element as well as to the memory access arbiter, the serial peripheral interface, and the memories in the unique address space, and wherein the external logic element comprises a microcontroller conductively connected to the RFID tag.