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AssigneeATMEL Germany GmbH
InventorUlrich Friedrich
Estimating the term…
A method for the at least temporary activation of bidirectional communication between a transponder having a nonvolatile memory area and a base station, whereby the transponder in an at least partial mute state receives messages, but no information-related data from the nonvolatile memory area are transmitted and for activation a data stream is transmitted to the transponder by the base station, wherein the data stream for a transmission is linked with a symmetric password, the enable signal is extracted by the transponder with the symmetric password from the received data stream, and the transponder is activated at least temporarily after the enable signal has been verified as valid. The invention relates further to a transponder having means for carrying out this type of procedure.
A method for an at least temporary activation of a bidirectional communication between a transponder having a nonvolatile memory area and a base station, the method comprising:
A transponder comprising:
A transponder with a switch, the transponder comprising a nonvolatile memory area for the at least temporary activation of bidirectional communication between the transponder and a base station, wherein the transponder, in an at least partial mute state, receives messages and at least transmission of information-related data from the nonvolatile memory area is prevented, wherein at least one symmetric password and an enable signal are stored in the nonvolatile memory area, wherein the transponder extracts the enable signal from a received data stream with the symmetric password and is verifies the symmetric password, and wherein bidirectional communication of the transponder is activated at least temporarily by the switching in the case of a valid enable signal.
Dependencies are inferred from the claim text.