SYSTEMS AND METHODS FOR WIRELESSLY MARKING MEDIA
First Claim
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1. A media marking transponder system, comprising:
- a media fastener;
a wireless transponder circuit coupled to the media fastener; and
an antenna for the wireless transponder circuit, the antenna having a first effective length when no piece of media is fastened to the media fastener and a second effective length when at least one piece of media is fastened to the media fastener, the second effective length different than the first effective length.
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Abstract
A media marking transponder system includes a media fastener and a wireless transponder circuit coupled to the media fastener. The antenna for the wireless transponder circuit has a first effective length when no piece of media is fastened to the media fastener and a second, different effective length when at least one piece of media is fastened to the media fastener.
11 Citations
25 Claims
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1. A media marking transponder system, comprising:
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a media fastener; a wireless transponder circuit coupled to the media fastener; and an antenna for the wireless transponder circuit, the antenna having a first effective length when no piece of media is fastened to the media fastener and a second effective length when at least one piece of media is fastened to the media fastener, the second effective length different than the first effective length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A media marking transponder system, comprising:
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means for fastening to at least one piece of media; means for responding to a wireless interrogation signal, the means for responding physically coupled to the means for fastening; and means for wirelessly transmitting a signal produced by the means for responding, the means for wirelessly transmitting having a first effective length when no piece of media is fastened to the means for fastening and a second effective length when at least one piece of media is fastened to the means for fastening, the second effective length different than the first effective length.
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24. A method of wirelessly marking media comprising:
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providing a wireless transponder circuit and an antenna for the wireless transponder circuit; changing an effective length of the antenna at least in part by coupling the wireless transponder circuit to at least one piece of media; and receiving a signal produced by the wireless transponder circuit via the antenna having the changed effective length. - View Dependent Claims (25)
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Specification