Automatic personnel monitoring system
First Claim
Patent Images
1. A monitoring system for monitoring the presence of a person at a remote location through a telephone line, comprising:
- means at a central location for automatically establishing a telephone link between the central and remote locations;
an object;
means for attaching said object to said person and indicating if said attachment has been tampered with; and
decoder means at the remote location said decoder means including means for receiving said object and means for producing a verification signal and transmitting the verification signal to said central location upon insertion of said object into said object-receiving means.
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Accused Products
Abstract
A monitoring system for indicating the presence of a person at a remote location through a telephone line includes circuitry at a central location for automatically establishing a telephone link between the central and remote locations. A decoder at the remote location produces a verification signal in response to an action performed by the person whose presence is to be indicated. The decoder transmits the verification signal through the telephone line to the central location to indicate the presence of the person at the remote location.
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Citations
57 Claims
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1. A monitoring system for monitoring the presence of a person at a remote location through a telephone line, comprising:
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means at a central location for automatically establishing a telephone link between the central and remote locations; an object; means for attaching said object to said person and indicating if said attachment has been tampered with; and decoder means at the remote location said decoder means including means for receiving said object and means for producing a verification signal and transmitting the verification signal to said central location upon insertion of said object into said object-receiving means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A monitoring system for indicating the presence of a person at a remote location through a telephone line, comprising:
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means at a central location for automatically establishing a telephone link between the central and remote locations; decoder means at the remote location for producting a verification signal in response to an action performed by the person whose presence is to be verified and transmitting said verification signal through the telephone line to the central location to indicate the presence of the person at the remote location; said decoder means including means for receiving an object and means responsive to the insertion of said object into said means for receiving an object for coupling said decoder means to said telephone line and for uncoupling said remote telephone from said telephone line while said decoder means is coupled thereto; said means for coupling and uncoupling including a normally open switch and a normally closed switch; said decoder means including a power supply, said power supply being sourced from the telephone line to produce an output voltage when said normally open switch is closed; said decoder means including means for timing out a predetermined time period in response to the production of said output voltage, said normally open switch and said normally closed switch being responsive to said timing means; said decoder means also including a further switch connecting said normally open switch and said normally closed switch to said power supply, and a logic gate controlling said further switch, said logic gate being responsive to said timing means. - View Dependent Claims (36)
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37. A monitoring system for indicating the presence of a person at a remote location through a telephone line, comprising:
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means at a central location for automatically establishing a telephone link between the central and remote locations; and decoder means at the remote location for producing a verification signal in response to an action performed by the person whose presence is to be verified and transmitting said verification signal through the telephone line to the central location to indicate the presence of the person at the remote location; said means at the central location for automatically establishing a telephone link including means for transmitting dual-tone multifrequency signals; said decoder means including a dual-tone multifrequency receiver and means responsive to said dual-tone multifrequency receiver for converting a received dual-tone multifrequency signal into a decimal equivalent signal, said decoder means also including means for transmitting, said means for transmitting including a tone generator responsive to said decimal equivalent signal for transmitting a corresponding single tone signal to the central location; said decoder means also including an input amplifier responsive to said dual-tone multifrequency signal transmitted from the central location and an output amplifier responsive to said single tone signal. - View Dependent Claims (38)
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39. A decoder for producing and transmitting a verification signal over a telephone line, comprising:
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means for receiving an object; coupling means responsive to the insertion of said object for coupling said means for supplying power to a telephone line and for uncoupling a telephone from the telephone line; means for analysing said object to determine if a predetermined code is present on said object and for producing a verification signal in response to said analysis; and communication means for transmitting said verification signal over the telephone line; said coupling means being further responsive to said communication means for uncoupling said means for supplying power from the telephone line and for coupling the telephone to the telephone line. - View Dependent Claims (40, 41)
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42. A system for monitoring a plurality of persons in a community, each said person having an assigned remote location within the community, the system comprising:
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(a) telephone dialer means at a central location for automatically initiating telephone calls from said central location via a telephone exchange serving the community to each of said remote locations, thereby periodically establishing a telephone link between the central location and each of said remote locations; (b) instruction signal means for automatically providing an instruction signal perceptible to the monitored person at each said remote location while that remote location is linked to said central location, whereby the monitored person is instructed to perform a predetermined action resulting in transmission of return signals from the remote location to the central location via the telephone link; and (c) test means at said central location for automatically testing the return signals from each of said remote locations to determine whether such return signals indicate that said predetermined action has been performed by the person assigned to that location.
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43. A system for monitoring a plurality of persons in a community, each said person having an assigned remote location within the community, the system comprising:
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(a) telephone dialer means at a central location for automatically initiating telephone calls from said central location via a telephone exchange serving the community to each of said remote locations, thereby periodically establishing a telephone link between the central location and each of said remote locations; (b) instruction signal means for automatically providing an instruction signal perceptible to the monitored person at each said remote location while that remote location is linked to said central location, whereby the monitored person is instructed to perform a predetermined action resulting in transmission of return signals from the remote location to the central location via the telephone link; (c) test means at said central location for automatically testing the return signals from each of said remote locations to determine whether such return signals indicate that said predetermined action has been performed by the person assigned to that location; and (d) a plurality of identifying objects, one such identifying object being associated with each of the persons to be monitored, and means for attaching each said identifying object to the associated person and indicating if such attachment has been tampered with; said test means including means for determining whether the identifying object associated with the persons assigned to a particular remote location has been employed to generate the return signals received from that remote location. - View Dependent Claims (44, 45, 46, 47, 48)
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49. A method of monitoring a plurality of persons in a community, each said person having an assigned remote location within the community, the method of comprising the steps of:
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(a) automatically initiating telephone calls from a central location to each of said remote locations via a telephone exchange serving the community to thereby periodically establish telephone links between the central location and each of said remote locations; (b) instructing the person assigned to the remote location to perform a predetermined action resulting in transmission of return signals from the remote location to the central location via the telephone link by automatically providing an instruction signal perceptible to the person at each said remote location while that remote location is linked with the central location; and (c) automatically monitoring and testing at said central location said return signals from each of said remote locations to determine whether the predetermined action has been performed by the person assigned to that location.
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50. A method of monitoring a plurality of persons in a community, each said person having an assigned remote location within the community, the method of comprising the steps of:
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(a) automatically initiating telephone calls from a central location to each of said remote locations via a telephone exchange serving the community to thereby periodically establish telephone links between the central location and each of said remote locations; (b) instructing the person assigned to the remote location to perform a predetermined action resulting in transmission of return signals from the remote location to the central location via the telephone link by automatically providing an instruction signal perceptible to the person at each said remote location while that remote location is linked with the central location; (c) automatically monitoring and testing at said central location said return signals from each of said remote locations to determine whether the predetermined action has been performed by the person assigned to that location; and (d) providing each said person with an identifying object and attaching each said object to the parolee so that tampering with said attachment can be detected, said step of testing the return signals from each remote location including the step of determining whether the identifying object was used in generating the return signals. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57)
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Specification