Wireless tether

Details Wireless tether Wireless tether

1998-07-31

2000-06-13

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

340529, 3405721, 3405733, 34082569, G08B 2300

Patent

active

060754435

ABSTRACT:
A wireless tether serves to warn if a tethered article moves away from the tethering location, such as a child moving away from a parent, or luggage being removed from its owner, or equipment being removed from a facility. A transmitting module on each tethered article periodically transmits a low power identification signal including a coded value. A receiving module at the tethering location receives identification signals transmitted by the transmitting module(s) and compares the coded value thereof to a stored coded value predetermined to correspond to that of the particular tethered article. If there is correspondence, the tethered article is near the tethering location. If there is not correspondence within a predetermined time interval, the tethered article has moved away and an alarm is raised. The "length" of the tether is adjusted by adjusting the transmission range of the transmitting module to the receiving module. A number of non-correspondences may be permitted before raising the alarm so as to reduce false alarms. A receiving module can tether plural transmitting modules and may be arranged for such plural transmitter modules to have identification signal coded values that are the same, or that are partially or completely different.

REFERENCES:
patent: 3568161 (1971-03-01), Knickel
patent: 4334221 (1982-06-01), Rosenhagen et al.
patent: 4675656 (1987-06-01), Narcisse
patent: 4691202 (1987-09-01), Denne et al.
patent: 5381129 (1995-01-01), Boardman
patent: 5477210 (1995-12-01), Belcher
patent: 5491482 (1996-02-01), Dingwall et al.
patent: 5502445 (1996-03-01), Dingwall et al.
patent: 5512879 (1996-04-01), Stokes
patent: 5565850 (1996-10-01), Yarnall, Jr. et al.
patent: 5589821 (1996-12-01), Sallen et al.
patent: 5596313 (1997-01-01), Berglund et al.
patent: 5652569 (1997-07-01), Gerstenberger et al.
patent: 5661460 (1997-08-01), Sallen et al.
patent: 5689240 (1997-11-01), Traxler
patent: 5714932 (1998-02-01), Castellon et al.
patent: 5754121 (1998-05-01), Ward et al.
patent: 5769032 (1998-06-01), Yarnall, Sr. et al.
patent: 5771002 (1998-06-01), Creek et al.
"TrackIT Portable Anti-Theft System", product package card, TrackIT Corp. (2 sheets).
"Mobile Security Goes High Tech", TrackIT Corp., Internet "http://www.trackitcorp.com/", Copyright 1997 (2 sheets).
Data Sheet: Holtek 2.sup.12 Series Encoders, pp. 1-14, 1996.
Data Sheet: Holtek 2.sup.12 Series Decoders, pp. 1-7, 1996.
"RF puts a lock on your computer," Automatic I.D. News, Jul. 1998, p. 10.
"Ensure Technologies--PC and Laptop Automatic Full-Time Access Security" (http://www.ensuretech.com), Copyright 1998 (10 pages).
FCC OET Search Form (1 sheet) and FCC Form 731 (4 sheets): Grantee K5I-Huge Automations Co. Ltd. (https://gullfoss.fcc.gov), 1998.

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