Contactless data transmission system and method for contactless data transmission
First Claim
1. A contactless data transmission system, comprising:
- a transponder; and
a write/read station for generating HF signals to exchange data with said transponder;
said transponder including;
a receiver unit including a receiving interface for receiving the HF signals generated by said write/read station and for thereby obtaining received HF signals, said receiver unit having an output terminal for providing data signals that are formed from the received HF signals, said receiver unit including a device for receiving and processing at least two signals selected from the group consisting of differently modulated ones of the received HF signals and differently encoded ones of the received HF signals;
a processing unit including a first input terminal connected to said output terminal of said receiver unit;
a detection unit for providing a control signal dependent on a performance of the received HF signal;
a transmission unit that is driven dependent on the control signal, said transmission unit for generating a HF signal that is selected from the group consisting of a signal that is modulated in a first manner, a signal that is modulated in a second manner, a signal that is encoded in a first manner, and a signal that is encoded in a second manner; and
a unit selected from the group consisting of said receiver unit and said processing unit is driven dependent on the control signal.
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Accused Products
Abstract
A contactless data transmission system having a transponder and a write/read station, between which data can be exchanged by a HF signal. The transponder includes a receiver unit having a receiving interface for accepting the HF signal and having an output terminal providing a data signal formed from the HF signal. The receiver unit has means for receiving and processing at least two differently modulated and/or encoded HF signals. The transponder also includes a processing unit having a first input terminal that is connected to the output terminal of the receiver unit. The transponder also includes a detection unit for providing a control signal dependent on the performance of the received HF signal. The receiver unit and/or the processing unit can be controlled or driven dependent on the control signal.
25 Citations
17 Claims
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1. A contactless data transmission system, comprising:
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a transponder; and
a write/read station for generating HF signals to exchange data with said transponder;
said transponder including;
a receiver unit including a receiving interface for receiving the HF signals generated by said write/read station and for thereby obtaining received HF signals, said receiver unit having an output terminal for providing data signals that are formed from the received HF signals, said receiver unit including a device for receiving and processing at least two signals selected from the group consisting of differently modulated ones of the received HF signals and differently encoded ones of the received HF signals;
a processing unit including a first input terminal connected to said output terminal of said receiver unit;
a detection unit for providing a control signal dependent on a performance of the received HF signal;
a transmission unit that is driven dependent on the control signal, said transmission unit for generating a HF signal that is selected from the group consisting of a signal that is modulated in a first manner, a signal that is modulated in a second manner, a signal that is encoded in a first manner, and a signal that is encoded in a second manner; and
a unit selected from the group consisting of said receiver unit and said processing unit is driven dependent on the control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification