Transponder unit, system and method for contactless data transmission
AssigneeInfineon Technologies AG
InventorsMartin Buchsbaum, Josef Gruber, Peter Raggam
Life of this patent
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Abstract
In various embodiments, a transponder unit for the contactless transmission of modulated data to a reader is provided. The transponder unit may include: a clock generator configured to generate a clock signal and to synchronize the clock signal in a synchronization mode, on the basis of a signal received from the reader; and a modulator configured to take the clock signal from the clock generator as a basis for modulating data; wherein the modulator is configured to send a signal for starting the synchronization mode to the clock generator.
Claims15
A transponder unit for the contactless transmission of modulated data to a reader, the transponder unit comprising:
- a clock generator configured to generate a clock signal and to synchronize the clock signal in a synchronization mode, on the basis of a signal received from the reader;
- and
- a modulator configured to take the clock signal from the clock generator as a basis for modulating data;
- wherein the modulator is configured to send a signal for starting the synchronization mode to the clock generator during a modulation pause between a first modulation pulse and a second modulation pulse within a modulation block or within a data block;
- wherein the modulator is configured to generate the modulation pause within the data block by masking out at least one modulation pulse.
A portable data storage medium, comprising:
- a transponder unit, comprising:
- a clock generator configured to generate a clock signal and to synchronize the clock signal in a synchronization mode, on the basis of a signal received from the reader;
- a modulator configured to take the clock signal from the clock generator as a basis for modulating data;
- wherein the modulator is configured to send a signal for starting the synchronization mode to the clock generator during a modulation pause between a first modulation pulse and a second modulation pulse within a modulation block or within a data block;
- wherein the modulator is configured to generate a modulation pause within a data block by masking out at least one modulation pulse.
A system for contactless data transmission, the system comprising:
- a reader configured to emit a signal;
- a transponder unit comprising a clock generator configured to generate a clock signal and to synchronize the clock signal in a synchronization mode, on the basis of the signal emitted by the reader, and a modulator, wherein the modulator is configured to take the clock signal from the clock generator as a basis for modulating data and sending a signal for starting the synchronization mode to the clock generator during a modulation pause between a first modulation pulse and a second modulation pulse within a modulation block or within a data block;
- wherein the modulator is configured to generate a modulation pause within the data block by masking out at least one modulation pulse.
A method for transmitting data from a transponder unit to a reader, wherein the transponder unit has a clock generator configured to generate a clock signal and to synchronize the clock signal, and a modulator, the method comprising:
- sending a signal from the reader to the clock generator;
- sending the clock signal from the clock generator to the modulator;
- modulating the data to be transmitted in the modulator on the basis of the clock signal;
- generating a modulation pause within a data block by masking out at least one modulation pulse;
- sending a signal for starting the synchronization of the clock signal from the modulator to the clock generator during the modulation pause between a first modulation pulse and a second modulation pulse within the modulation block or within the data stream;
- and
- synchronizing the clock signal on the basis of the signal received from the reader.
Dependencies are inferred from the claim text.