Registers – Systems controlled by data bearing records – Inventory
Reexamination Certificate
2006-06-26
2008-11-11
Le, Thien M (Department: 2887)
Registers
Systems controlled by data bearing records
Inventory
C235S382000
Reexamination Certificate
active
07448545
ABSTRACT:
Apparatus for monitoring items passing through an entry/exit opening in a delimited space, comprising:radio-frequency transmission means (2) adapted to communicate with a plurality of transponders associated with said items to detect the presence of the transponders in proximity of the opening, each transponder being adapted to transmit a specific identifier code,at least a pair of optoelectronic sensors (3, 4) arranged in series at said opening, each sensor (3, 4) being adapted to transmit a first signal identifying a condition of clear sensor, in which said sensor (3, 4) detects the opening as being clear, and a second signal identifying a condition of locked-on, i.e. engaged sensor, in which said sensor (3, 4) detects an item passing through said opening.Control means (5) are provided to continuously store and/or update the time-based detection events of the transponders and the time-based variation events of the signal transmitted by the sensors (3, 4), said control means (5) being adapted to compare said time-based signal-variation events to determine an opening passing-through time interval (T), and to compare the time-based detection events of the transponders with the passing-through time interval (T) to determine the transponders that have passed through the opening.
REFERENCES:
patent: 4791411 (1988-12-01), Staar
patent: 6677857 (2004-01-01), Bara et al.
patent: 7293705 (2007-11-01), Linton et al.
patent: 1 200 931 (2002-05-01), None
patent: 2003-146413 (2003-05-01), None
patent: WO 82/00377 (1982-02-01), None
Mari Daniele
Pacorich Massimo
Pippia Ennio
Electrolux Professional SpA
Le Thien M
Pearne & Gordon LLP
LandOfFree
Method for monitoring items passing through an entry/exit... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for monitoring items passing through an entry/exit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for monitoring items passing through an entry/exit... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4029937