Home incarceration system

Details Home incarceration system Home incarceration system

1991-08-02

1993-04-27

Dwyer, James L.

Telephonic communications

Emergency or alarm communications

Personal monitoring

379 42, 379 49, 340505, 340539, 340573, H04M 1104, H04M 126, G08B 2300

Patent

active

052068978

ABSTRACT:
An incarceree identifying circuit used in an incarceree monitoring system includes an incarceree identifier worn by the incarceree at a remote location with an electrical component having a selected electrical characteristic. A comparator circuit measures the selected electrical characteristic and compares the selected electrical characteristic to a reference electrical characteristic. The comparator circuit triggers a timer if the selected electrical characteristic matches the reference electrical characteristic. The timer provides a signal to a speech circuit to disable a speaker. The tone generator is responsive to the signal and provides a verification signal via a telephone link to a central station. A verification circuit at the central location receives the verification signal and determines the presence or absence of the incarceree at the remote location.

REFERENCES:
patent: 3564214 (1971-02-01), Cooper, Jr.
patent: 4338601 (1982-07-01), Nance-Kivell
patent: 4747120 (1988-05-01), Foley
Marconi Electronic Devices, "Electronic Monitoring Programme-The Hawk", Aug. 1988.

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