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公开(公告)号：DK0697154T3
公开(公告)日：2004-04-26
申请号：DK95908005
申请日：1995-01-09
Applicant: MOTOROLA INC
Inventor： GARDECK KEVIN , GREEN DAVID A , CUTTS KEVIN
Abstract: In a secure communication system 100, communication units in different communication groups may be simultaneously rekeyed over the air by having a managing key unit 101 generate a key packet 121. This key packet 121, which includes a unit key 122, a key alias 123, and a key representation 125, is transported to at least one fleet key unit 102. Upon receiving the key packet 121, the fleet key unit determines, based on the key alias, which communication units of which communication groups are to be rekeyed. Once this is determined, the key representation 125, which represents the unit key (encryption key) 122, is transmitted to the communication units, thus rekeying multiple communication units in multiple communication groups simultaneously.
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公开(公告)号：AT257631T
公开(公告)日：2004-01-15
申请号：AT95908005
申请日：1995-01-09
Applicant: MOTOROLA INC
Inventor： GARDECK KEVIN , GREEN DAVID A , CUTTS KEVIN
Abstract: In a secure communication system 100, communication units in different communication groups may be simultaneously rekeyed over the air by having a managing key unit 101 generate a key packet 121. This key packet 121, which includes a unit key 122, a key alias 123, and a key representation 125, is transported to at least one fleet key unit 102. Upon receiving the key packet 121, the fleet key unit determines, based on the key alias, which communication units of which communication groups are to be rekeyed. Once this is determined, the key representation 125, which represents the unit key (encryption key) 122, is transmitted to the communication units, thus rekeying multiple communication units in multiple communication groups simultaneously.
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公开(公告)号：ES2214497T3
公开(公告)日：2004-09-16
申请号：ES95908005
申请日：1995-01-09
Applicant: MOTOROLA INC
Inventor： GARDECK KEVIN , GREEN DAVID A , CUTTS KEVIN
Abstract: In a secure communication system 100, communication units in different communication groups may be simultaneously rekeyed over the air by having a managing key unit 101 generate a key packet 121. This key packet 121, which includes a unit key 122, a key alias 123, and a key representation 125, is transported to at least one fleet key unit 102. Upon receiving the key packet 121, the fleet key unit determines, based on the key alias, which communication units of which communication groups are to be rekeyed. Once this is determined, the key representation 125, which represents the unit key (encryption key) 122, is transmitted to the communication units, thus rekeying multiple communication units in multiple communication groups simultaneously.
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Patent Agency Ranking
公开(公告)号：PT697154E
公开(公告)日：2004-04-30
申请号：PT95908005
申请日：1995-01-09
Applicant: MOTOROLA INC
Inventor： GARDECK KEVIN , GREEN DAVID A , CUTTS KEVIN
Abstract: In a secure communication system 100, communication units in different communication groups may be simultaneously rekeyed over the air by having a managing key unit 101 generate a key packet 121. This key packet 121, which includes a unit key 122, a key alias 123, and a key representation 125, is transported to at least one fleet key unit 102. Upon receiving the key packet 121, the fleet key unit determines, based on the key alias, which communication units of which communication groups are to be rekeyed. Once this is determined, the key representation 125, which represents the unit key (encryption key) 122, is transmitted to the communication units, thus rekeying multiple communication units in multiple communication groups simultaneously.
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公开(公告)号：DE19813927A1
公开(公告)日：1998-10-08
申请号：DE19813927
申请日：1998-03-28
Applicant: MOTOROLA INC
Inventor： BERKEN JAMES J , MANSEN ANDREW J , GREEN DAVID A , FREYMAN PHILLIP K
Abstract: The system includes a line interface circuit, to which a signal analyser is linked measuring a combined audio signal to determine if a fault exists in the subscriber's loop defined by the subscriber's building network and the line interface circuit. The line interface circuit generates the combined audio signal by combining a reflection and the reception audio signal. Preferably, the signal analyser measures the combined audio signal to determine if a fault is present in the subscriber's building network. Typically the reflection signal depends on an impedance at a signal ring line gate of the line interface circuit.
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公开(公告)号：AU673972B2
公开(公告)日：1996-11-28
申请号：AU1600095
申请日：1995-01-09
Applicant: MOTOROLA INC
Inventor： GARDECK KEVIN , GREEN DAVID A , CUTTS KEVIN
Abstract: In a secure communication system 100, communication units in different communication groups may be simultaneously rekeyed over the air by having a managing key unit 101 generate a key packet 121. This key packet 121, which includes a unit key 122, a key alias 123, and a key representation 125, is transported to at least one fleet key unit 102. Upon receiving the key packet 121, the fleet key unit determines, based on the key alias, which communication units of which communication groups are to be rekeyed. Once this is determined, the key representation 125, which represents the unit key (encryption key) 122, is transmitted to the communication units, thus rekeying multiple communication units in multiple communication groups simultaneously.
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公开(公告)号：AU1600095A
公开(公告)日：1995-09-11
申请号：AU1600095
申请日：1995-01-09
Applicant: MOTOROLA INC
Inventor： GARDECK KEVIN , GREEN DAVID A , CUTTS KEVIN
Abstract: In a secure communication system 100, communication units in different communication groups may be simultaneously rekeyed over the air by having a managing key unit 101 generate a key packet 121. This key packet 121, which includes a unit key 122, a key alias 123, and a key representation 125, is transported to at least one fleet key unit 102. Upon receiving the key packet 121, the fleet key unit determines, based on the key alias, which communication units of which communication groups are to be rekeyed. Once this is determined, the key representation 125, which represents the unit key (encryption key) 122, is transmitted to the communication units, thus rekeying multiple communication units in multiple communication groups simultaneously.
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公开(公告)号：EP0697154A4
公开(公告)日：2002-06-05
申请号：EP95908005
申请日：1995-01-09
Applicant: MOTOROLA INC
Inventor： GARDECK KEVIN , GREEN DAVID A , CUTTS KEVIN
CPC classification number: H04L9/0822 , H04L9/0833 , H04L9/0891
Abstract: In a secure communication system (100), communication units in different communication groups may be simultaneously rekeyed over the air by having a managing key unit (101) generate a key packet (121). This key packet (121), which includes a unit key (122), a key alias (123) and a key representation (125), is transported to at least one fleet key unit (102). Upon receiving the key packet (121), the fleet key unit determines, based on the key alias, which communication units of which communication groups are to be rekeyed. Once this is determined, the key representation (125), which represents the unit key (encryption key) (122), is transmitted to the communication units, thus rekeying multiple communication units in multiple communication groups simultaneously.
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