Satellite unit identification system
First Claim
1. A method for registering a satellite unit as a member of an alarm system having a master unit, said satellite unit including means for storing a satellite unit identification signal;
- means for transmitting signals over a radio frequency communication channel, said signals having a portion indicative of said satellite unit identification signal;
means for transmitting signals over a line-of-sight communication channel, said signals having a portion indicative of said satellite unit identification signal; and
means for triggering the satellite unit to transmit a signal over said line-of-sight communication channel, and said master unit including, means for receiving signals on a radio frequency communication channel;
means for receiving signals on a line-of-sight communication channel; and
means for recovering and registering satellite unit identification signals received in signals on the line-of-sight communication channel, comprising;
(a) arranging the satellite unit such that signals transmitted over the line-of-sight communication channel of the satellite unit are transmitted such as to be received on the line-of-sight communication channel of the master unit;
(b) triggering the satellite unit to transmit a signal having a portion indicative of the satellite unit identification signal over the line-of-sight communication channel; and
(c) recovering and registering in the master unit the satellite unit identification signal from the received signal.
1 Assignment
0 Petitions
Accused Products
Abstract
In a fire, smoke or intruder detection system including a master unit and satellite units with remote sensors, the satellite units send alarm transmissions to the master unit over a radio frequency channel. In order to register satellite units with the master unit each satellite unit is provided with a unique identification code and, after suitable triggering, sends a signal including this code to the master unit over a line-of-sight communications channel. The master unit registers satellite unit identification codes received on the line-of-sight channel and disregards radio frequency transmissions if they include unregistered satellite unit identification codes.
39 Citations
26 Claims
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1. A method for registering a satellite unit as a member of an alarm system having a master unit, said satellite unit including means for storing a satellite unit identification signal;
- means for transmitting signals over a radio frequency communication channel, said signals having a portion indicative of said satellite unit identification signal;
means for transmitting signals over a line-of-sight communication channel, said signals having a portion indicative of said satellite unit identification signal; and
means for triggering the satellite unit to transmit a signal over said line-of-sight communication channel, and said master unit including, means for receiving signals on a radio frequency communication channel;
means for receiving signals on a line-of-sight communication channel; and
means for recovering and registering satellite unit identification signals received in signals on the line-of-sight communication channel, comprising;(a) arranging the satellite unit such that signals transmitted over the line-of-sight communication channel of the satellite unit are transmitted such as to be received on the line-of-sight communication channel of the master unit; (b) triggering the satellite unit to transmit a signal having a portion indicative of the satellite unit identification signal over the line-of-sight communication channel; and (c) recovering and registering in the master unit the satellite unit identification signal from the received signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- means for transmitting signals over a radio frequency communication channel, said signals having a portion indicative of said satellite unit identification signal;
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8. A method for registering a satellite unit as a member of an alarm system including a master unit and a movable transceiver unit said satellite unit including means for storing a satellite unit identification signal;
- means for transmitting signals over a radio frequency communication channel, said signals having a portion indicative of said satellite unit identification signal;
means for transmitting signals over a line-of-sight communication channel, said signals having a portion indicative of said satellite unit identification signal; and
means for triggering the satellite unit to transmit a signal over said line-of-sight communication channel;
said moveable transceiver unit including means for receiving communications on a line-of-sight communication channel;
means for storing received communications; and
means for triggering said transceiver to retransmit said stored communications on a line-of-sight communication channel;
said master unit including means for receiving signals on a radio frequency communication channel;
means for receiving signals on a line-of-sight communication channel; and
means for recovering and registering identification signals received in signals on the line-of-sight communication channel;
comprising;(a) positioning the moveable transceiver such that signals transmitted over the line-of-sight communication channel of the satellite unit are received and stored by the moveable transceiver; (b) triggering said satellite unit to transmit a signal having a portion indicative of said satellite unit identification signal; (c) re-positioning the movable transceiver such that signals transmitted by said transceiver are received on the line-of-sight communication channel of the master unit; (d) triggering the movable transceiver to transmit said stored signal; and (e) recovering and registering in said master unit the satellite unit identification signal.
- means for transmitting signals over a radio frequency communication channel, said signals having a portion indicative of said satellite unit identification signal;
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9. A system for registering at least one satellite unit as a member of an alarm system including a master unit, comprising:
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(a) means included in said satellite unit for transmitting a satellite unit identification signal over a radio frequency channel; (b) means for transmitting signals including the satellite unit identification signal over a line-of-sight communication channel; means included in said master unit for receiving signals on radio frequency and line-of-sight communications channels; (d) means for recovering satellite unit identification signals from the received signals; and (e) means for registering identification signals received on the line-of-sight channel, when in a satellite unit registration mode, as identification signals of satellite units belonging to the system. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A master unit for a system including the master unit and at least one satellite unit, the master unit comprising:
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(a) means for receiving communications on a radio frequency channel; (b) means for receiving communications on a line-of-sight communications channel; (c) first means for recovering and registering satellite unit identification signals from communications received on the line-of-sight communications channel; and (d) second means for recovering satellite unit identification signals from communications received on the radio frequency channel and for comparing the recovered identification signals with the registered identification signals, thereby to enable received communications to be disregarded if transmitted by unregistered satellite units. - View Dependent Claims (23, 24, 25, 26)
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Specification