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| Snap-hook assemblies with added components |
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| Method for testing acoustical attenuation of hearing protectors |
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| Audiometric testing, analyzing, and recording apparatus and method |
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| Methods and devices for controlling facsimile transmissions of confidential information |
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| Electro-optic device board |
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| Integrated self-powered tire revolution counter |
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Radio frequency identification tag arranged for magnetically storing tag state information
| Details |
Inventors: Vega, Victor Allen; Eberhardt, Noel H.;
Assignee: Motorola, Inc. (Schaumburg, IL)
Primary Examiner: Swann; Glen
Assistant Examiner:
Attorney, Agent or Firm: Hillman; Val Jean F.
A radio frequency identification tag system (10) utilizes a radio frequency identification tag (16) that includes stored tag information. The tag includes an antenna element (30) and a common electrode (28). The antenna element electrostatically receives an exciter signal (34) from a proximately-located electrostatic exciter (12). Upon receiving the exciter signal, the tag becomes energized, thereby causing it to generate a read signal (36) based on the stored tag information. The antenna element then electrostatically sends the read signal to a proximately-located reader (14), which detects the stored tag information. In addition, exactly one of the tag common electrode and the tag antenna element is arranged to magnetically store tag state information. The tag state information represents exactly one state of two possible states and is read by a proximately-located magnetic reader (18). |
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DETAILED DESCRIPTION We claim: 1.
A radio frequency identification tag including a tag circuit, a tag common electrode and a tag antenna element, the tag common electrode and the tag antenna element coupled to the tag circuit, the tag common electrode arranged for coupling to ground, the tag antenna element arranged for electrostatically receiving an exciter signal from a proximately-located electrostatic exciter and coupling the exciter signal to the tag circuit, the tag circuit arranged for becoming energized based on the exciter signal, generating a read signal and coupling the read signal to the tag antenna element, the tag antenna element arranged for electrostatically sending the read signal to a proximately-located electrostatic reader, exactly one of the tag common electrode and the tag antenna element arranged for magnetically storing tag state information such that the tag state information can be magnetically read by a proximately-located magnetic reader, the tag state information comprising exactly one state of two possible states, and the read signal being a reflected signal.
2.
The radio frequency identification tag of claim 1, the tag common electrode further arranged for coupling to an article.
3.
The radio frequency identification tag of claim 2, the tag common electrode further arranged for coupling to ground by means of the article.
4.
The radio frequency identification tag of claim 3, the article being a loaned, leased or rented article.
5.
The radio frequency identification tag of claim 3, the article being a retail sales article.
6.
The radio frequency identification tag of claim 1, the tag common electrode arranged for coupling to an animal or a person, the tag common electrode further arranged for coupling to ground by means of the animal or the person.
7.
The radio frequency identification tag of claim 1, the tag antenna element further arranged for receiving a transmitted write signal from the proximately-located electrostatic exciter, the transmitted write signal including write information, and for coupling the transmitted write signal to the tag circuit, the tag circuit further arranged for storing the write information as a stored tag information, the read signal being modulated by means of reflected load modulation based on the stored tag information
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