US5133082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective monitoring
Assignee: Motorola Solutions Inc
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Filing: 1991-03-22
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Granted: 1992-07-21
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Expires: 2011-03-22
Abstract
Abstract In a conventional non-trunked communication system (10) having a plurality of radios (13) being able to transmit and receive communication containing an ID number on a channel, a method is provided for any one of these radios (13) to select (36) the monitoring of transmissions of another radio communicating on the channel. In a receiving radio, the ID number corresponding to another radio is selectively entered (36) in a memory list of desirable ID's (35) to be monitored (35) by the receiving radio (13). When transmission containing an ID number (42) of a transmitting radio is received from the transmitting radio, the ID number of the transmitting radio is compared (48) to the memory list to find a match. A squelching means (25) is unmuted (31) only if a match is found and other unsquelching conditions are satisfied (56).
Inventors
- 👤 Richard A. M. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:56
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
In a conventional non-trunked two-way radio communication system including a receiving radio for selectively monitoring transmissions of a transmitting radio, the receiving radio comprising: means for entering selectively an ID number corresponding to said transmitting radio to be monitored; memory means for storing said ID number in a memory list of desirable IDs to be monitored by said receiving radio; receiving means for receiving transmissions containing an ID number of said transmitting radio and a modulated carrier signal from said transmitting radio; means for comparing said ID number of said transmitting radio to said memory list to find a match to satisfy a first unsquelching condition; means for detecting presence of said modulated carrier signal to satisfy a second unsquelching condition; audio means for hearing transmissions if unmutted; and controller means for unmuting said audio means if said first and second unsquelching conditions are satisfied.
Claim 2
Dependent Claim
145 words
In a conventional non-trunked two-way radio communication system including a receiving radio for selectively monitoring transmissions of a transmitting radio, the receiving radio comprising: means for entering selectively an ID number corresponding to said transmitting radio to be monitored; memory means for storing said ID number in a memory list of desirable IDs to be monitored by said receiving radio; receiving means for receiving transmissions containing an ID number of said transmitting radio and a modulated carrier signal from said transmitting radio; means for comparing said ID number of said transmitting radio to said memory list to find a match to satisfy a first unsquelching condition; means for detecting presence of said modulated carrier signal to satisfy a second unsquelching condition; audio means for hearing transmissions if unmutted; and controller means for unmuting said audio means if said first and second unsquelching conditions are satisfied.
Claim 3
Dependent Claim
23 words
The conventional non-trunked communication system of claim 1 wherein said ID number comprises a no-unique ID number representing an assigned grouping of radios.
Claim 4
Dependent Claim
21 words
The receiving radio of claim 1 wherein said ID number comprises a group ID number representing an assigned grouping of radios.
Claim 5
Dependent Claim
104 words
In a two-way radio communication system a first radio to selectively monitor the a second radio in said first radio: entering and identification representation corresponding to said second radio in a memory list of identification representations to be monitored by said first radio; receiving a transmission containing said identification representation corresponding to said second radio from said second radio at said first radio; comparing said identification representation received of said second radio to said identification representation corresponding to said second radio entered in said memory list to find a match in said first radio; and unmuting a squelching means if said match is found.
Claim 6
Dependent Claim
104 words
In a two-way radio communication system a first radio to selectively monitor the a second radio in said first radio: entering and identification representation corresponding to said second radio in a memory list of identification representations to be monitored by said first radio; receiving a transmission containing said identification representation corresponding to said second radio from said second radio at said first radio; comparing said identification representation received of said second radio to said identification representation corresponding to said second radio entered in said memory list to find a match in said first radio; and unmuting a squelching means if said match is found.
Claim 7
Dependent Claim
160 words
In a conventional non-trunked two-way radio communication system including an undesignated radio, the system comprising: said designated radio comprising: means for transmitting a modulated carrier signal and an ID number to said undesignating radio; and said undesignated radio comprising; means for entering selectively said ID number corresponding to said designated radio to be monitored; memory means for storing said ID number in a memory list of deirable IDs to be monitored by said undesignated radio; receiving means for receiving transmissions containing an ID number of said designated radio and said modulated carrier signal from said designated radio; means for comparing said ID number of said designated radio to said memory list to find a match to satisfy a first unsquelching condition; means for detecting presence of said modulated carrier signal to satisfy a second unsquelching condition; audio means for hearing transmissions if unmuted; and controller means for unmuting said audio means if said first and second unsquelching conditions are satisfied.
Claim 8
Dependent Claim
160 words
In a conventional non-trunked two-way radio communication system including an undesignated radio, the system comprising: said designated radio comprising: means for transmitting a modulated carrier signal and an ID number to said undesignating radio; and said undesignated radio comprising; means for entering selectively said ID number corresponding to said designated radio to be monitored; memory means for storing said ID number in a memory list of deirable IDs to be monitored by said undesignated radio; receiving means for receiving transmissions containing an ID number of said designated radio and said modulated carrier signal from said designated radio; means for comparing said ID number of said designated radio to said memory list to find a match to satisfy a first unsquelching condition; means for detecting presence of said modulated carrier signal to satisfy a second unsquelching condition; audio means for hearing transmissions if unmuted; and controller means for unmuting said audio means if said first and second unsquelching conditions are satisfied.
Claim 9
Dependent Claim
121 words
In a two-way radio communication system including for selectively monitoring transmissions of a second radio, the first radio comprising: means for entering an identification representation corresponding to said second radio to be monitored; a memory list of identification representations to be monitored by said first radio; memory means for storing said identification representation in said memory list; receiving means for receiving transmissions containing said identification representation of said second radio and a modulated carrier signal from said second radio; means for comparing said identification representation of said second radio to said memory list to find a match in said first radio; audio means for hearing transmissions if unmuted; and controller means for unmuting said audio means if said match is found.
Claim 10
Dependent Claim
121 words
In a two-way radio communication system including for selectively monitoring transmissions of a second radio, the first radio comprising: means for entering an identification representation corresponding to said second radio to be monitored; a memory list of identification representations to be monitored by said first radio; memory means for storing said identification representation in said memory list; receiving means for receiving transmissions containing said identification representation of said second radio and a modulated carrier signal from said second radio; means for comparing said identification representation of said second radio to said memory list to find a match in said first radio; audio means for hearing transmissions if unmuted; and controller means for unmuting said audio means if said match is found.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-21 | 1996-01-20 | 1996-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-21 | 2000-01-20 | 2000-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-21 | 2004-01-20 | 2004-07-21 | $7700.00 | Window Closed / Lapsed |