Communications: electrical – Condition responsive indicating system – With particular system function
Reexamination Certificate
2008-03-04
2008-03-04
Tweel, Jr., John (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular system function
C340S572100
Reexamination Certificate
active
07339464
ABSTRACT:
An easily deployed, extremely detection-resistant surveillance method, apparatus, and system are disclosed. Preferred embodiments of the apparatus are adapted for generating and broadcasting pulsed transmissions optimized for electronic tagging, tracking, and “homing” applications. This makes the invention excellent for radio-locating “terrorists”, criminal suspects, vehicles, and etc., under surveillance. The apparatus is well adapted for “high-risk surveillance targets”, where avoiding sophisticated surveillance detection is paramount. The invention uses nondescript “stealth packaging” in various preferred form-factors, that can appear, e.g., to be either a protruding bolt-head, a gas-cap, a wheel-balancing lug, or other nondescript automotive or truck part (depending on embodiment). The preferred signal transmission method uses ultra-low power, pulsed transmissions which are generated and encrypted prior to transmission, using (either proprietary or non-proprietary) spread spectrum signal algorithm-based transmission schemes, or other transmission schemes. Very-low-noise signal detection circuits in a base station receive and decrypt signals, to complete the system.
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