Transponder Unit
First Claim
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1. A method for transferring data from a transponder unit to a reading device to which data from transponders are transferred by modulation of a field of the reading device, comprising the steps:
- the transponder unit, in a first operating mode, generates a modulated transponder field and emits the transponder field as a signal which is evaluable for the reading device as a modulation of the reading device field by a transponder, for transferring the data to the reading device.
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Abstract
The invention relates to a transponder unit (1) and to a method for data transfer between the transponder unit and a reading device (100). To increase the range of data transfer from the transponder unit (1) to the reading device (100), the transponder unit (1) has means integrated therein for actively sending a signal to the reading device (100) which can be evaluated by the reading device (100) like a modulation of its own field (110) by a transponder.
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Citations
42 Claims
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1. A method for transferring data from a transponder unit to a reading device to which data from transponders are transferred by modulation of a field of the reading device, comprising the steps:
- the transponder unit, in a first operating mode, generates a modulated transponder field and emits the transponder field as a signal which is evaluable for the reading device as a modulation of the reading device field by a transponder, for transferring the data to the reading device.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A transponder unit for transferring data to a reading device to which data from transponders are transferred by modulation of a field of the reading device, comprising:
- means for generating and sending a modulated transponder field as a signal which is evaluable for the reading device as a modulation of the reading device field by a transponder, for transferring the data to the reading device in a first operating mode.
- View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. An interface unit for signal modulation which is effected for transfer of data to a reading device to which data from transponders can be transferred by modulation of a field of the reading device, comprising means for generating and sending a modulated transponder field as an output signal which is evaluable for the reading device as a modulation of the reading device field by a transponder, for transferring the data to the reading device in a first operating mode of the interface unit.
Specification