Method and read/write device for selecting a wireless data medium
First Claim
1. A method for selecting at least one data medium from a number of detected wireless data media, comprising:
- registering the data media in a detection area of a read/write device via a number of detection cycles;
recording at least one receive parameter for each of the detected wireless data media;
selecting at least one of the closest detected data media in each case based on a statistical evaluation of the receive parameters recorded in different antenna polarizations, said statistical evaluation providing an indication of whether the at least one selected closest detected data media has been primarily directly detected or primarily indirectly detected, an indirectly detected data media not being selected;
performing a plurality of detection cycles by the read/write device in each case with a different antenna polarization, at least one receive parameter being recorded in each case during each of the plurality of detection cycles with a respectively utilized antenna polarization for the detected data media; and
selecting at least one of the detected data media in each case based on a statistical evaluation of the receive parameters recorded in different antenna polarizations.
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Abstract
A method and a read/write device for selecting at least one wireless data medium from a number of detected wireless data media that are RFID transponders, wherein the data media are registered in a detection area of a read/write device via a plurality of detection cycles, at least one receive parameter is recorded for each of the detected data media, and at least one data medium of the data media is selected based on an evaluation of the recorded receive parameters, a plurality of detection cycles are performed at different antenna polarizations, at least one receive parameter is recorded at each of utilized antenna polarizations for the detected data media, and at least one of the detected data media is selected in each case based on a statistical evaluation of the receive parameters recorded in the different antenna polarizations.
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Citations
14 Claims
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1. A method for selecting at least one data medium from a number of detected wireless data media, comprising:
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registering the data media in a detection area of a read/write device via a number of detection cycles; recording at least one receive parameter for each of the detected wireless data media; selecting at least one of the closest detected data media in each case based on a statistical evaluation of the receive parameters recorded in different antenna polarizations, said statistical evaluation providing an indication of whether the at least one selected closest detected data media has been primarily directly detected or primarily indirectly detected, an indirectly detected data media not being selected; performing a plurality of detection cycles by the read/write device in each case with a different antenna polarization, at least one receive parameter being recorded in each case during each of the plurality of detection cycles with a respectively utilized antenna polarization for the detected data media; and selecting at least one of the detected data media in each case based on a statistical evaluation of the receive parameters recorded in different antenna polarizations. - View Dependent Claims (2, 3, 4, 5, 13)
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6. A read/write device for selecting at least one data medium from a number of data media located within a detection area of the read/write device, comprising:
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an antenna built-in or connected to the read/write device, the antenna is configured to alternately operate with different antenna polarizations; and an evaluation unit for selecting at least one of the detected data media; wherein the read/write device is configured to initially perform a plurality of detection cycles, in each case with a different antenna polarization, at least one receive parameter being recorded in each case during each of the plurality of detection cycles with a respectively utilized antenna polarization for the detected data media; and wherein the evaluation unit is configured to perform a statistical evaluation of the receive parameters recorded in the different antenna polarizations and to select at least one of the closest detected data media subsequent to the initially performed plurality of detection cycles, said statistical evaluation providing an indication of whether the at least one selected closest detected data media has been primarily directly detected or primarily indirectly detected, an indirectly detected data media not being selected. - View Dependent Claims (7, 8, 9, 10, 11, 12, 14)
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Specification