Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent
1993-07-29
1995-09-05
Peng, John K.
Communications: electrical
Condition responsive indicating system
With particular coupling link
340568, 340573, 342 50, 455 677, G08B 310
Patent
active
054482216
ABSTRACT:
A monitoring system determines the presence of the person or persons to be monitored within a well-defined area or areas using one or more portable remote devices which are in two-way communication contact with a base unit. The base unit is connected to a telephone line to enable communication with a monitoring service. The base unit and remote unit incorporate spread spectrum communication technology which permits a high transmit power level. The effectiveness of the monitoring system does not depend on radio signal strength, but instead, operates using a radio ranging method that measures the time it takes for a security-coded signal to be transmitted to and returned from the remote device. The remote device also includes a mechanism for sounding an audible out-of-range warning alarm in the event that the person being monitored exceeds the house arrest boundaries. A second audible alarm preferably sounds from the remote device and the base device at predetermined times after the sounding of the out-of-range alarm if the person does not return to the house arrest area.
REFERENCES:
patent: 2910683 (1959-10-01), Todd
patent: 3739378 (1973-06-01), Botzum et al.
patent: 3863256 (1975-01-01), Smith
patent: 4113382 (1978-09-01), Freudenschuss
patent: 4593273 (1986-06-01), Narcisse
patent: 4598272 (1986-07-01), Cox
patent: 4853692 (1989-08-01), Wolk et al.
patent: 4980671 (1990-12-01), McCurdy
patent: 5218344 (1993-06-01), Ricketts
patent: 5255306 (1993-10-01), Melton et al.
Peng John K.
Wu Daniel J.
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