Personal alarm system
First Claim
1. A subscriber station for transmission of information over a a communications link to a central monitoring station and indicative of subscriber inactivity comprising:
- means operative to provide an alert signal at predetermined time intervals;
switch means;
means operative to transmit a first message over said communications link to said central monitoring station in response to said alert signal;
means operative to transmit a second message over said communications link to said central monitoring station within a selected period following the occurence of said alert signal upon activation of said switch means.
1 Assignment
0 Petitions
Accused Products
Abstract
A personal alarm system operative to provide a warning at a central monitoring station indicative of subscriber inactivity. The system comprises a subscriber station which interfaces to a communications link and a remote central monitoring station also interfaced to the link and operative to receive and analyze messages transmitted to the monitoring station by the subscriber station. The subscriber station transmits an alert message to the monitoring station over the communication link if the subscriber fails to reset clock logic via a reset switch or activity sensor within a predetermined time interval. An annunciator may be activated at the subscriber station coincident with transmission of the alert message. If the subscriber fails to activate a reset switch or a selected activity sensor within a predetermined period, the monitoring station provides an inactivity alarm indication to an operator who will take appropriate action. The system is primarily intended for the elderly, infirm, or incapacitated who are living alone and who, in event of illness or injury, might be unable to summon assistance and thereby suffer further harm as a result of inattention. The availability of this system will permit the aging and infirm to live independently without this fear.
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Citations
42 Claims
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1. A subscriber station for transmission of information over a a communications link to a central monitoring station and indicative of subscriber inactivity comprising:
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means operative to provide an alert signal at predetermined time intervals; switch means; means operative to transmit a first message over said communications link to said central monitoring station in response to said alert signal; means operative to transmit a second message over said communications link to said central monitoring station within a selected period following the occurence of said alert signal upon activation of said switch means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A subscriber station for transmission of information over a communications link to a central monitoring station and indicative of subscriber inactivity comprising:
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means operative to provide an alert signal at predetermined time intervals; switch means actuatable by a subscriber; means operative to transmit a first message over said communication link to said central monitoring station in response to said alert signal; timer means activated in response to said alert signal and operative to produce a timer output signal defining a timer period of predetermined duration; means operative to transmit a second message over said communications link to said central monitoring station upon subscriber activation of said switch means during said timer period. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A personal alarm system for transmittal of information indicative of subscriber inactivity over a communications link, comprising:
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a central monitoring station coupleable to the communications link and comprising; alarm indicating means; central processing means; and monitor timing means operative to provide a predetermined interval, said monitor timing means activated upon receipt by said central monitoring station of a first message over said communications link; a subscriber station coupleable to the communications link and comprising; means operative to provide an alert signal at predetermined time intervals; switch means actuatable by a subscriber; means, responsive to said alert signal, operative to transmit said first message over said communications link to said central monitoring station; and means operative to transmit a second message over said communications link to said central monitoring station upon subscriber activation of said switch means after activation of said alert signal; said central monitoring station operative to activate said alarm indicating means if a second message is not received by said central monitoring station during said monitor timing means predetermined interval. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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Specification