Transponder unit, system and method for contactless data transmission
First Claim
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1. 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.
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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.
9 Citations
15 Claims
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1. A transponder unit for the contactless transmission of modulated data to a reader, the transponder unit comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. 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.- View Dependent Claims (11)
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12. A system for contactless data transmission, the system comprising:
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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.
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13. 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:
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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. - View Dependent Claims (14, 15)
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Specification