Alarm system with supervision controlled receiver parameter modification
First Claim
1. In a communications system comprising a plurality of remote transmitting devices and a receiving station having a receiver associated therewith, each of said remote transmitting devices capable of transmitting a supervision signal having a plurality of correlated supervision messages and a non-supervision signal having a plurality of correlated non-supervision messages, a method for automatically testing the communications system comprising the steps of:
- a) receiving at said receiving station a first message from a transmitting device;
b) determining if said first message is a supervision message or a non-supervision message; and
c) impairing the ability of the receiving station to properly detect a subsequent message when said first message is determined to be a supervision message.
2 Assignments
0 Petitions
Accused Products
Abstract
A self-testing data communications system suitable for use with an alarm system, the communications system being capable of modifying an operational parameter such as the input signal sensitivity of a receiver located at a monitoring station during receipt of a supervision signal from a remote alarm device, in order to ensure that a non-supervision alarm signal will be properly received when the operational parameter is again returned to its normal state.
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Citations
48 Claims
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1. In a communications system comprising a plurality of remote transmitting devices and a receiving station having a receiver associated therewith, each of said remote transmitting devices capable of transmitting a supervision signal having a plurality of correlated supervision messages and a non-supervision signal having a plurality of correlated non-supervision messages, a method for automatically testing the communications system comprising the steps of:
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a) receiving at said receiving station a first message from a transmitting device; b) determining if said first message is a supervision message or a non-supervision message; and c) impairing the ability of the receiving station to properly detect a subsequent message when said first message is determined to be a supervision message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. In an alarm system comprising a plurality of remote transmitting devices and a receiving station having a receiver associated therewith, said receiver having at least one modifiable operational parameter, each of said remote transmitting devices capable of transmitting a supervision signal having a plurality of correlated supervision messages and an alarm signal having a plurality of correlated alarm messages, a method for automatically testing the alarm system comprising the steps of:
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a) receiving at said receiving station a first message from a transmitting device; b) determining if said first message is a supervision message or an alarm message; c) modifying an operational parameter of the receiver when said first message is determined to be a supervision message; d) receiving a subsequent message; e) determining if said subsequent message is correlated to said first message; f) when said subsequent message is determined to be correlated to said first message, then performing the steps of returning the modified operational parameter of said receiver to normal, and subsequently processing said first message as being part of a validly received supervision signal; g) when said subsequent message is determined to be not correlated to said first message, then performing the steps of maintaining the modified operational parameter of said receiver, processing said subsequent message as being part of a validly received signal, and waiting to receive a further subsequent message; and (h) returning the modified operational parameter of said receiver to normal and ignoring said first message when, after a predetermined time, no subsequent message has been received which is correlated to said first message. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A data communications system comprising:
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(a) a plurality of remote devices, each of said remote devices comprising means for transmitting supervision signals and non-supervision signals; and (b) a receiving station comprising; (i) means for receiving said supervision signals and said non-supervision signals, and (ii) processing means for impairing the ability of the receiving station to properly detect a subsequent message in response to the receipt of a supervision signal. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An alarm system comprising:
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(a) a plurality of remote devices, each of said remote devices having a transmitter for transmitting a supervision signal comprising a plurality of correlated supervision messages and an alarm signal comprising a plurality of correlated alarm messages indicative of an alarm status; (b) a receiving station comprising; (i) a receiver for communications with each of said remote devices, and (ii) processing means operatively associated with said receiver for processing messages received from each of said remote devices, said processing means being configured to decode a first message received from a remote device and execute a supervision routine if said first message is determined to be a supervision message; wherein said supervision routine causes the impairment of the ability of the receiving station to properly detect a subsequent message. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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39. A receiving station for use in a data communications system comprising a plurality of remote devices, each of said remote devices having a transmitter for transmitting a supervision signal comprising a plurality of correlated supervision messages and a non-supervision signal, said receiving station comprising:
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(a) a receiver for communications with each of the remote devices, and (b) processing means operatively associated with said receiver for processing messages received from each of the remote devices, said processing means being configured to decode a first message received from a remote device and execute a supervision routine if said first message is determined to be a supervision message; wherein said supervision routine causes the impairment of the ability of the receiving station to properly detect a subsequent message. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification