TRANSPONDER UNIT, SYSTEM AND METHOD FOR CONTACTLESS DATA TRANSMISSION
First Claim
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;
a modulator, the modulator configured to modulate data on the basis of the clock signal from the clock generator;
wherein the modulator is configured to generate a modulation pause by masking out at least one modulation component, the modulation component being smaller than a modulation pulse, and wherein the modulator is further configured to send the signal for starting the synchronization mode to the clock generator during this modulation pause.
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Abstract
A transponder unit for the contactless transmission of modulated data to a reader is provided. The transponder unit includes 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, the modulator configured to modulate data on the basis of the clock signal from the clock generator. The modulator is configured to generate a modulation pause by masking out at least one modulation component, the modulation component being smaller than a modulation pulse. The modulator is further configured to send the signal for starting the synchronization mode to the clock generator during this modulation pause.
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Citations
16 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; a modulator, the modulator configured to modulate data on the basis of the clock signal from the clock generator; wherein the modulator is configured to generate a modulation pause by masking out at least one modulation component, the modulation component being smaller than a modulation pulse, and wherein the modulator is further configured to send the signal for starting the synchronization mode to the clock generator during this modulation pause. - View Dependent Claims (2, 7, 8, 9, 10, 11)
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3. A transponder unit for the contactless transmission of modulated data blocks 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; a modulator configured to modulate data on the basis of the clock signal from the clock generator; wherein the modulator is configured to generate a first modulation pause within a first data block by masking out at least one first modulation component, to generate a second modulation pause within a second data block by masking out at least one second modulation component, the position of the first modulation pause in the first data block being different from the position of the second modulation pause in the second data block, and wherein the modulator is further configured to send a first signal for starting the synchronization mode to the clock generator during the first modulation pause and to send a second signal for starting the synchronization mode to the clock generator during the second modulation pause. - View Dependent Claims (4, 5, 6)
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12. 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, the modulator configured to modulate data on the basis of the clock signal from the clock generator; wherein the modulator is configured to generate a modulation pause by masking out at least one modulation component, the modulation component being smaller than a modulation pulse, and wherein the modulator is further configured to send the signal for starting the synchronization mode to the clock generator during this modulation pause. - View Dependent Claims (13)
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14. A system for contactless data transmission, 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, the modulator being configured to modulate data on the basis of the clock signal from the clock generator and to generate a modulation pause by masking out at least one modulation component, and also being configured to send a signal for starting the synchronization mode to the clock generator during this modulation pause.
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15. A method for transmitting data from a transponder unit to a reader, the transponder unit having 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 in the modulator by masking out at least one modulation component within a data block; sending a signal for starting the synchronization of the clock signal from the modulator to the clock generator during the modulation pause; and synchronizing the clock signal on the basis of the signal received from the reader. - View Dependent Claims (16)
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Specification