Communication system to monitor individual subscribers

• US 4,011,409 A
• Filed: 04/02/1976
• Issued: 03/08/1977
• Est. Priority Date: 04/02/1976
• Status: Expired due to Term

• Current Assignee: Medical Specialties Incorporated (HCA Healthcare, Inc.)
• Original Assignee: Robert K. Conrad
• Inventors: Conrad, Robert K.
• Primary Examiner(s): Stella, George G.
• Application Number:
  US05/669,801
• Time in Patent Office: 340 Days
• Field of Search: 179/1 MN, 179/2 R, 179/2 A, 179/2 AS
• US Class Current: 379/38
• CPC Class Codes: H04M 11/04 with alarm systems, e.g. fire, police or burglar alarm systems
• CPC Class Codes: H04M 11/045 using recorded signals, e.g. speech

Abstract

Individual subscribers belonging to a class including superannuated, disabled, sick and medically unstable are monitored in a communication system by establishing time-based periods for telephone link responses between each subscriber and a monitor station where separate electrical signals are produced corresponding to the telephone link responses. The electrical signals are used to energize indicator means including lights used to detect a failure of a subscriber to respond according to the established time-based period for a telephone link response. An alert is provided on behalf of a subscriber based on the detected failure of a subscriber to respond. The indicator means is reset at preselected intervals of time corresponding to the time-based periods for telephone link responses.

Claims

1. In a communication system to monitor individual subscribers belonging to a class including superannuated, disabled, sick and medically unstable, a method including the steps of:

establishing time-based periods for telephone link responses between each subscriber belonging to said class and a monitor station,

producing separate electrical signals at the monitor station corresponding to said telephone link responses,

using said separate electrical signals to energize indicator means at said monitor station,

detecting from said indicator means the failure of a subscriber to respond according to the established time-based period for a telephone link response,

providing an alert on behalf of a subscriber based on the detected failure to respond according to the established period for a telephone link response, and

resetting said indicator means at preselected intervals of time corresponding essentially to said time-based periods for a telephone link response.

2. The method according to claim 1 including the further step of disabling the indicator means used to detect an individual subscriber'"'"'s telephone link response for a preestablished disruption period between the individual subscriber and the monitor station.

3. The method according to claim 1 wherein said indicator means at said monitor station include a light indicator for each telephone link.

4. The method according to claim 1 wherein the time-based periods for a telephone link response are less than or equal to 24 hours.

5. The method according to claim 1 wherein said indicator means at said monitor station include an array of light indicators.