Communications: electrical – Condition responsive indicating system – With particular system function
Reexamination Certificate
2006-04-11
2006-04-11
Lee, Benjamin C. (Department: 2632)
Communications: electrical
Condition responsive indicating system
With particular system function
C340S573100, C340S541000, C340S686600, C340S536000, C340S572100
Reexamination Certificate
active
07026924
ABSTRACT:
There is disclosed a system for detecting the passage of persons or objects through an entry-exit (4) to a delimited space (2), including (i) a detection device including transmission means (8) for transmitting different first and second electromagnetic signals (a, b) in respectively first and second communication regions (A, B) spatially separated from each other and partially overlapping, (ii) portable electronic units (40) intended to be fitted to said persons or objects and including reception means for said first and second electromagnetic signals, and (iii) means for detecting the direction of passage, through said entry-exit, of a person or an object fitted with a portable electronic unit. Each portable electronic unit includes amplitude measuring means for determining the reception amplitude of said first and second electromagnetic signals and comparator means for comparing the reception amplitude of the first and second electromagnetic signals so as to determine which of these two signals has the highest amplitude.
REFERENCES:
patent: 4302846 (1981-11-01), Stephen et al.
patent: 4303910 (1981-12-01), McCann
patent: 4459474 (1984-07-01), Walton
patent: 4595915 (1986-06-01), Close
patent: 5701127 (1997-12-01), Sharpe
patent: 5726628 (1998-03-01), Yoo
patent: 5809142 (1998-09-01), Hurta et al.
patent: 6097301 (2000-08-01), Tuttle
patent: 6396438 (2002-05-01), Seal
patent: 6424838 (2002-07-01), Stobbe et al.
patent: 6501435 (2002-12-01), King et al.
patent: 6653946 (2003-11-01), Hassett
patent: 2 246 896 (1992-02-01), None
patent: WO 92 08148 (1992-05-01), None
patent: WO 00 67208 (2000-11-01), None
patent: WO 01 03057 (2001-01-01), None
Degrauwe Marc
Desjeux Olivier
Roz Thierry
EM Microelectronic - Marin SA
Lee Benjamin C.
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