Charles P Brame from Norfolk, VA, age 63

Us Patents

Message Bus Slot Update/Idle Control In Rf Trunking Multisite Switch
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US Patent:

52532534, Oct 12, 1993
Filed:

Feb 22, 1991
Appl. No.:

7/658640
Inventors:

Charles P. Brame - Forest VA
Timothy F. Cree - Forest VA
Philip C. Gulliford - Forest VA
Wim A. Imron - Forest VA
Satish Kappagantula - Lynchburg VA
James L. Teel - Goode VA
Assignee:

Ericsson GE Mobile Communications Inc. - Lynchburg VA
International Classification:

H04J 316
US Classification:

370 8511
Abstract:

A multisite network switch for a series of RF digital trunked radio transceivers and dispatcher consoles. The switch establishes audio communications between different sites and various dispatcher consoles. The multisite switch has a distributed architecture in which each node of the switch is supported by a microprocessor controlled card. This card has a communications controller that routes messages between the internal switch bus, an outside port and an interface processor that controls the audio slots in the switch. The communications controller receives control messages from the switch bus, but discards redundant slot status messages by checking a slot status bit map stored in a memory unit on the card.

Communication Link Between Multisite Rf Trunked Network And An Intelligent Dispatcher Console
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US Patent:

52009548, Apr 6, 1993
Filed:

Feb 22, 1991
Appl. No.:

7/658637
Inventors:

James L. Teel - Goode VA
Charles P. Brame - Forest VA
Timothy F. Cree - Forest VA
Stephen R. Downs - Forest VA
Satish Kappagantula - Lynchburg VA
Assignee:

Ericsson GE Mobile Communications Inc. - Lynchburg VA
International Classification:

H04J 300
H04Q 700
US Classification:

370 941
Abstract:

A communication link for a dispatcher console to a multisite network of RF digitally trunked radio site transceivers and other dispatcher consoles. The communication link provides the dispatcher console direct access to a wide area RF network. A multisite central switch establishes audio and control communications between the different sites and various dispatcher consoles. The dispatcher consoles have audio and control links to the multisite switch. The multisite switch has a distributed architecture in which a switch node interfaces with the dispatcher console. A control communication protocol provides a standard format for message packets between the multisite switch and dispatcher console.

Dynamic Address Allocation Within Rf Trunking Multisite Switch
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US Patent:

56030860, Feb 11, 1997
Filed:

May 12, 1993
Appl. No.:

8/059670
Inventors:

Timothy F. Cree - Forest VA
Charles P. Brame - Forest VA
Win A. Imron - Forest VA
Assignee:

Ericsson Inc. - Research Triangle Park NC
International Classification:

H04Q 728
US Classification:

455 341
Abstract:

A multisite network switch for a series of RF digital trunked radio transceivers and dispatcher consoles. The switch establishes audio communications between different sites and various dispatcher consoles. The multisite switch has a distributed architecture in which each node of the switch is supported by a microprocessor controlled card. These nodes perform all of the logical functions of the switch. When the switch is booted-up or reset, each node executes a dynamic address generation algorithm to select a unique address and resolve any address conflicts with other nodes.

Conventional Base Station Interface Architecture For Rf Trunking Multisite Switch
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US Patent:

52415376, Aug 31, 1993
Filed:

Jun 4, 1991
Appl. No.:

7/709987
Inventors:

Philip C. Gulliford - Forest VA
Charles P. Brame - Forest VA
Wim A. Imron - Forest VA
Assignee:

Ericsson GE Mobile Communications, Inc. - Lynchburg VA
International Classification:

H04Q 702
H04Q 704
H04B 726
US Classification:

370 67
Abstract:

An interface for a conventional base station into a digitally trunked network of RF communications systems acts a pseudo-down link from a multisite switch to a trunked site controller. The interface monitors the conventional channels from the base station and sends a channel assignment message to the multisite switch when it detects a voice signal. The channel assignment message notifies the trunked RF systems that a new call is active so that each system can assign a trunked working channel to the conventional call. Similarly, the multisite switch sends a channel request when a trunked call is to be broadcast over a conventional channel. The interface keys the channel and couples the channel to the trunked call.

System For Providing Access To Digitally Encoded Communications In A Distributed Switching Network
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US Patent:

53655907, Nov 15, 1994
Filed:

Apr 19, 1993
Appl. No.:

8/047834
Inventors:

Charles P. Brame - Forest VA
Assignee:

Ericsson GE Mobile Communications Inc. - Lynchburg VA
International Classification:

H04L 900
US Classification:

380 49
Abstract:

A distributed switching network (switch) routes audio and control signals throughout the switch from various audio sources to one or more audio destinations. Audio sources such as mobile/portable radio units (via RF repeater transmitters), dispatch consoles, and landline telephone subscribers (via the central telephone switching network) are preassigned and routed onto an audio channel (i. e. a time slot) on a time division multiplexed (TDM) audio bus through a corresponding interface module. These interface modules broadcast digitized audio and data signals to all other interface modules over their preassigned TDM bus slot. Audio routing is performed to the audio destinations through corresponding interface modules that selectively "listen" to active TDM network channels. A digital voice interface module is provided in the switch to permit audio sources/destinations otherwise lacking certain digital processing capabilities (e. g. encryption/decryption) to participate in such digitally based calls.

Dynamic Address Allocation Within Rf Trunking Multisite Switch
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US Patent:

52764427, Jan 4, 1994
Filed:

Feb 22, 1991
Appl. No.:

7/658843
Inventors:

Timothy F. Cree - Forest VA
Charles P. Brame - Forest VA
Wim A. Imron - Forest VA
Assignee:

Ericsson GE Mobile Communications Inc. - Lynchburg VA
International Classification:

H04Q 300
H04J 324
US Classification:

34082552
Abstract:

A multisite network switch for a series of RF digital trunked radio transceivers and dispatcher consoles. The switch establishes audio communications between different sites and various dispatcher consoles. The multisite switch has a distributed architecture in which each node of the switch is supported by a microprocessor controlled card. These nodes perform all of the logical functions of the switch. When the switch is booted-up or reset, each node executes a dynamic address generation algorithm to select a unique address and resolve any address conflicts with other nodes.

Method And Apparatus For Permitting Radio Unit Roaming Between Trunked Rf Transmission Sites Over A Wide Area That Encompasses Plural Multisite Networks
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US Patent:

54756839, Dec 12, 1995
Filed:

Jan 7, 1994
Appl. No.:

8/178548
Inventors:

Stephen D. Harrison - Lynchburg VA
Charles P. Brame - Forest VA
Assignee:

Ericsson GE Mobile Communications Inc. - Research Triangle Park NC
International Classification:

H04J 314
US Classification:

370 681
Abstract:

Digitally trunked radio transceivers are permitted to roam over an extended coverage area including two or more digitally trunked radio frequency communication networks. Each network includes at least one digital repeater site having a corresponding site coverage area and serving digitally trunked radio transceivers disposed within or near the site coverage area. Each network also includes a local multisite switch for routing communications between the digital repeater sites within the networks. Site adjacency information is established for each site and communicated between the networks. Each digitally trunked transceiver maintains a site adjacency list for its currently selected site and modifies that list when the transceiver roams into a new site coverage area and selects a new repeater site.

Data Protocol And Monitoring System For Rf Trunking Multisite Switch Global Serial Channel
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US Patent:

52873544, Feb 15, 1994
Filed:

Feb 22, 1991
Appl. No.:

7/658641
Inventors:

James L. Teel - Goode VA
Philip C. Gulliford - Forest VA
Charles P. Brame - Forest VA
Wim A. Imron - Forest VA
Assignee:

Ericsson GE Mobile Communications Inc. - Lynchburg VA
International Classification:

H04J 312
US Classification:

370 857
Abstract:

A multisite network switch for a series of RF digital trunked radio transceivers and dispatcher consoles. Each transceiver covers a certain site area. The switch establishes audio communications between different sites and various dispatcher consoles. The multisite switch has a distributed architecture in which each node of the switch is supported by a microprocessor controlled card. The nodes are connected by audio buses and a dedicated message bus. The messages on the message bus allow the nodes to communicate control information regarding the status of slots on the audio bus, the members in groups, the location of radio units, call types and a host of other information needed to operate the switch.