Conveyor bed with openings for capacitive coupled readers

Details Conveyor bed with openings for capacitive coupled readers Conveyor bed with openings for capacitive coupled readers

1999-01-05

2000-08-22

Lee, Benjamin C.

Communications: electrical

Condition responsive indicating system

Specific condition

3405728, 3405721, 343720, 343764, 343765, 343766, 343866, G08B 1314

Patent

active

061079219

ABSTRACT:
Identification tags are secured to parcels moving upon a conveyor belt. The identification tags each contain a transponder circuit in electrical communication with a transponder antenna. The transponder circuit contains a unique digital code containing data relating to the parcel. When the identification tag is located beneath a parcel, at least one reader circuit is positioned beneath the conveyor belt in alignment with a selected aperture extending through the. One or more apertures in alignment with the reader antenna provide electrical communication with the reader antenna. The reader circuit generates a signal in the presence of an identification tag, which is transmitted to the transponder antenna located on the identification tag. The signal energizes the transponder circuit in the identification tag, which sends a unique digital code via the transponder antenna back to the reader antenna. The digital code is transmitted from the reader antenna to the reader circuit, where the digital code is analyzed to identify the contents of the parcel.

REFERENCES:
patent: 3713102 (1973-01-01), Martin
patent: 3832530 (1974-08-01), Reitboeck et al.
patent: 5221831 (1993-06-01), Geiszler
patent: 5376923 (1994-12-01), Kindschy
patent: 5410296 (1995-04-01), Montbriand et al.
patent: 5523749 (1996-06-01), Cole et al.
patent: 5689239 (1997-11-01), Turner et al.
patent: 5793305 (1998-08-01), Turner et al.
patent: 5929760 (1999-07-01), Monahan

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