Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1999-05-27
2000-09-19
Swann, Glenn
Communications: electrical
Condition responsive indicating system
Specific condition
3405727, 3405728, 34082534, 34082554, G08B 13157
Patent
active
061218804
ABSTRACT:
A sticker transponder adapted to be affixed to a glass surface, such as a vehicle windshield, includes a RFID transponder enabling the storage and retrieval of vehicle related data. The sticker transponder comprises a flexible circuit substrate having an antenna formed thereon and a transponder circuit disposed on the substrate and coupled to the antenna. An adhesive layer is coupled to a first surface of the flexible circuit substrate. An indicia layer is coupled to a second surface of the flexible circuit opposite from the first surface. The indicia layer comprises a space permitting indicia to be printed thereon. The antenna has a characteristic impedance defined in part by a dielectric constant of the flexible circuit substrate in combination with a dielectric constant of the glass surface. As a result, a proper impedance match between the antenna and the transponder circuit is achieved only when the sticker is affixed to the glass surface. The sticker transponder further comprises a release liner affixed to the adhesive layer, the release liner being selectively removable to permit the sticker transponder to be affixed to the glass surface. The transponder circuit further includes a memory having a read-only portion and a re-writable portion.
REFERENCES:
patent: 4782345 (1988-11-01), Landt
patent: 4786907 (1988-11-01), Koelle
patent: 4816839 (1989-03-01), Landt
patent: 5661473 (1997-08-01), Paschal
patent: 5771021 (1998-06-01), Veghte et al.
patent: 5995898 (1999-11-01), Tuttle
Hughes Peter Scott
Scott Dale Larry
Intermec IP Corp.
Swann Glenn
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