Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-01-24
2006-01-24
Wu, Daniel (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S545100, C340S545200, C116S086000, C160S010000
Reexamination Certificate
active
06989746
ABSTRACT:
An alarm chip (10) and the use of the alarm chip (10) for giving warning of burglary or undesired entry into buildings, installations or structures, preferably by so-called shell-protection of the building, installation or structure, the alarm chip (10) detecting, by means of an associated accelerometer, motions/vibrations in the object to which the alarm chip (10) is fixedly arranged, the object being formed of e.g. a window (2), a door, possibly a frame or casing connected to the window (2) or door, wherein the motions/vibrations are converted by means of the accelerometer into an outgoing flow of acceleration values, which are further processed, by means of a processor in a signal processing circuit, in which, by means of algorithms, the acceleration values are recognized and separated into either output alarm signals or output non-alarm signals, and in which output signals may be coded/encrypted, so that each alarm chip (10) has i.a. a unique address and identity, and in which the signals are possibly also output in the form of signal pulses, preferably in a so-called pseudo-random order, the output signals being transmitted, preferably in a wireless manner, to at least one central and/or external alarm unit/alarm system arranged to the building, installation or structure.
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NorDan AS
Walk Samuel J.
Wu Daniel
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