Patent ID: 7587050

Claim:
A method of transmitting signals between at least one base station and a number of mobile data carriers operating in the crypto mode or in the plain mode, wherein [a] the base station emits at least one command signal and/or data signal that is provided with at least one identifying pattern, [b] at least one of the data carriers receives the command signal and/or data signal emitted by the base station that is provided with the identifying pattern, [c] at least one of the data carriers that receive the command signal and/or data signal transmits to the base station a response signal that is a response to the command signal and/or data signal, and [d] the base station receives the response signal transmitted by the data carrier, characterized in that the identifying pattern is in the form of at least one first identifying pattern that identifies the crypto mode, for addressing at least one data carrier operating in the crypto mode, and is in the form of at least one second identifying pattern that can be distinguished from the first identifying pattern and that identifies the plain mode, for addressing at least one data carrier operating in the plain mode, wherein the identifying pattern is in the form of at least one code violation, wherein the first identifying pattern and the second identifying pattern differ from one another in respect of their respective lengths.