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AssigneeAms R&D D.O.O.
InventorsKosta Kovacic, Vinko Kunc, Andrej Vodopivec
Estimating the term…
A memory access arbiter (MAA) in an RFID tag is connected to an unique address space (UAS), which comprises a non-volatile memory (NVM), a transferred data memory (TDM) and a status-information memory (SIM) storing information on the status of the transferred data memory (TDM). The transferred data memory (TDM) and the status-information memory (SIM) are volatile memories, e.g. of the RAM type having a memory capacity of 16 bits or 32 bits according to the standard of an applied RFID communication. The RFID tag of the invention provides for a faster communication between an interrogator and an external logic element by one order of magnitude, which is due to fast volatile memories for transferred data as well as for corresponding status information. A still higher communication rate is achieved by introducing a command that has not yet been standardized.
An RFID tag with an improved communication between an external logic element (ELE) conductively connected thereto and an interrogator, in which RFID tag an antenna (A) is connected to a memory access arbiter (MAA), which on the one side is connected to a non-volatile memory (NVM) and on the other side it is connected through a serial peripheral interface (SPI) to the external logic element (ELE), characterized in that the memory access arbiter (MAA) is connected to an unique address space (UAS), that the unique address space (UAS) comprises the non-volatile memory (NVM), a transferred data memory (TDM) and a status-information memory (SIM) storing information on the status of the transferred data memory (TDM) and that the transferred data memory (TDM) and the status-information memory (SIM) are volatile memories.
A method for an improved communication by means of an RFID tag between an interrogator and an external logic element (ELE), which is conductively connected to said RFID tag, by which method data are transferred from the interrogator to the RFID tag in a first step (IT1), the RFID tag acknowledges said data transfer to the interrogator in a second step (TI1) and then issues an interrupt request transferred to the external logic element (ELE) in a third step (TE1), in a fourth step (ET1) said external logic element (ELE) requests the data in the RFID tag to be read and transferred to itself, the data read in the RFID tag are transferred to the external logic element (ELE) in a fifth step (TE2) and data from the external logic element (ELE) are transferred to the RFID tag in a sixth step (ET2) but the interrogator hitherto repeats requesting the information on the status of the transferred data memory (TDM) to be read in subsequent intermediate steps (IT2, IT3, . . . ) of a first kind and said status information repeats to be transferred from the RFID tag to the interrogator in subsequent intermediate steps (IT2, IT3, . . . ) of a second kind and after the sixth step (ET2) had been performed the information on the new status of the transferred data memory (TDM) is transferred from the RFID tag to the interrogator in a seventh step (TI3) and in an eighth step (IT4) the interrogator requests data in the RFID tag to be read and the data are transferred from the RFID tag to the interrogator in a nineth step (TI4), characterized in that the transferred data are stored in the RFID tag in the transferred data memory (TDM), which is a volatile memory, and that said information on the status of the transferred data memory (TDM) is stored in the RFID tag in a status-information memory (SIM), which is a volatile memory.
A method for an improved communication by means of an RFID tag between an interrogator and an external logic element (ELE), which is conductively connected to said RFID tag, by which method data are transferred from the interrogator to the RFID tag in a first step (IT1′), the RFID tag issues an interrupt request, which is transferred to the external logic element (ELE) in a second step (TE1), said external logic element (ELE) requests the data in the RFID tag to be read and transferred to itself in a third step (ET1), the data read in the RFID tag are transferred to the external logic element (ELE) in a fourth step (TE2) and the data from the external logic element (ELE) are transferred to the RFID tag in a fifth step (ET2), characterized in that a command, consisting in that the RFID tag shall wait for new data till they are transferred to the RFID tag from the external logic element (ELE), together with said data is transferred from the interrogator to the RFID tag in the first step (IT1′), that thereafter said new data are transferred from the RFID tag to the interrogator in a sixth step (TI1) and that the transferred data are stored in the RFID tag in the transferred data memory (TDM), which is a volatile memory.
Dependencies are inferred from the claim text.