Data carrier for transmitting different stored status information with different transmission parameters

A circuit (2) for a data carrier (1) for contactless communication with a communication station (40), which circuit (2) comprises the following means:

• connection means (6) for receiving an request signal (IS), which request signal (IS) can be generated by a communication station (40) and can be transmitted in a contactless manner with the aid of a field generated by the communication station (40) and acting upon a data carrier (1) to the data carrier (1) and consequently to the circuit (2) for the data carrier (1), and
• storage means (16), which storage means (16) are designed for storing at least two items of status information (EASB1, EASB2) of significance to the data carrier (1), and
• read out means (15) for reading out one stored item of status information (EASB1, EASB2) in each case in response to receiving the request signal (IS), and
• processing means (18) for processing the status information (EASB1, EASB2) read-out in each case, which processing means (18) are designed for processing the status information (EASB1, EASB2) read-out in each case so as to create a transmission signal (MCRS, MCRS1, MCRS2, MCRS3, MCRS4, MCRS5) suitable for transmission to the communication station (40), and in which processing means (18) at least one transmission parameter for the transmission signal (MCRS, MCRS1, MCRS2, MCRS3, MCRS4, MCRS5) can be altered, and
• recognition means (22) for recognizing the status information (EASB1, EASB2) read out in each case, and control connection means (25) between the recognition means (22) and the processing means (18), which control connection means (25) are designed to have a controlling effect on the processing means (18) as a function of the status information (EASB1, EASB2) read out in each case, specifically to alter the at least one transmission parameter for the transmission signal (MCRS, MCRS1, MCRS2, MCRS3, MCRS4, MCRS5) as a function of the status information (EASB1, EASB2) recognized and read out in each case.

A communication station (40) for contactless communication with a data carrier (1), which data carrier (1) is designed for contactless communication with the communication station (40) and comprises the means listed below:

• receiving means (3) for receiving an request signal (IS), which request signal (IS) can be generated by a communication station (40) and can be transmitted to the data carrier (1) in a contactless manner with the aid of a field generated by the communication station (40) and acting on the data carrier (1), and
• storage means (16), which storage means (16) are designed for storing at least two items of status information (EASB1, EASB2) of significance for data carrier (1), and
• read out means (15) for reading out one stored item of status information (EASB1, EASB2) at a time in response to receiving the request signal (IS), and
• processing means (18) for processing the status information (EASB1, EASB2) read-out in each case, which processing means (18) are designed for processing the status information (EASB1, EASB2) read out in each case so as to create a transmission signal (MCRS, MCRS1, MCRS2, MCRS3, MCRS4, MCRS5) suitable for transmission to the communication station (40), and in which processing means (18) at least one transmission parameter for the transmission signal (MCRS, MCRS1, MCRS2, MCRS3, MCRS4, MCRS5) can be altered, and recognition means (22) for recognizing the status information (EASB1, EASB2) read out in each case, and
• control connection means (25) between the recognition means (22) and the processing means (18), which control connection means (25) are designed to have a controlling effect on the processing means (18) as a function of the status information (EASB1, EASB2) recognized and read out in each case, specifically to alter the at least one transmission parameter for the transmission signal (MCRS, MCRS1, MCRS2, MCRS3, MCRS4, MCRS5) as a function of the status information (EASB1, EASB2) recognized and read out in each case, wherein
• said communication station (40) comprises the means listed below:
• command-signal generating means (43) for generating command signals (IS) and
• receiving means (49) for receiving the transmission signal (MCRS) transmitted from the data carrier (1) to the communication station (40), and
• processing means (51) for processing the received transmission signal (MCRS) and transmission-parameter recognition means (55) for recognizing the transmission parameter of the received transmission signal (MCRS), and
• decision means (57) which cooperate with the transmission-parameter recognition means (55) and which are provided and designed for making a decision as to the generation of at least one command signal as a function of the transmission parameter of the received transmission signal (MCRS) recognized by the transmission-parameter recognition means (55).