Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2000-06-06
2003-06-17
Lee, Benjamin C. (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S686500, C340S573400, C340S933000, C340S988000, C455S404200, C455S456500, C141S192000, C348S135000, C348S150000, C382S103000
Reexamination Certificate
active
06580372
ABSTRACT:
FIELD OF INVENTION
The present invention relates to automatic detection of positions of electronic devices, e.g., radio devices, and determining if that position is unauthorized.
BACKGROUND
Concerns have recently been raised about the safety of cellular phones around combustible materials. At least one highly-publicized report has indicated that an operating cellular phone could cause an explosion at a gas station.
Defense against this issue could be difficult. Gas stations are often un-staffed, or minimally staffed. The attendants often stay within a burglary-protected area. The attendants are often not able or not motivated to adequately police whether a cellular phone or other radio transmitting device is being used.
SUMMARY
The present application teaches detecting locations of an electronic device and determining if that location is withinan unauthorized location. Specific embodiments include detection by satellite positioning systems, detection by triangulation, and detection by an imager.
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Geek, “Daily Geek News”, Friday Oct. 8, 1999, pp. 1-2.
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