FERNANDO C COLON-OSORIO
Broker in Stow, MA

License number
Massachusetts 9500494
Issued Date
Aug 31, 2006
Expiration Date
Apr 11, 2017
Type
Salesperson
Address
Address
Stow, MA 01775
LicenseFiles verified this license of Nov 25, 2016 at the Mass.gov - Consumer Affairs and Business Regulation.

Personal information

See more information about FERNANDO C COLON-OSORIO at radaris.com
Name
Address
Phone
Fernando Colon-Osorio
Nantucket, MA
(508) 228-1346

Professional information

See more information about FERNANDO C COLON-OSORIO at trustoria.com
Fernando Colon-Osorio Photo 1
Arbitration Apparatus For Shared Bus

Arbitration Apparatus For Shared Bus

US Patent:
5230044, Jul 20, 1993
Filed:
Jul 2, 1990
Appl. No.:
7/547569
Inventors:
Mohammad V. Abidi - Shrewsbury MA
Nii Quaynor - Shrewsbury MA
Fernando Colon-Osorio - Stow MA
Assignee:
Digital Equipment Corporation - Maynard MA
International Classification:
G06F 1300, G06F 1340
US Classification:
395325
Abstract:
An improved arbitration technique for a computer network system in which multiple nodes communicate using a shared bus. Each node in the system is assigned an initial arbitration number, N+1, where N is the node number assigned to the node. The arbitration number is the number of quiet slots a node must count before trying to transmit on the system bus. The length of a quiet slot is determined by a particular system's electrical characteristics. Each node in the system monitors a carrier signal on the system bus, the presence of which indicates that a node is transmitting on the bus. Upon detecting the absence of the carrier signal, each node in the system begins to count quiet slots. Every time a node counts an additional quiet slot, it checks to see if the count matches its arbitration number. If the two values are equal, the node checks to see if it has a transmit request, and begins to transmit a message on the system bus if a transmit request is present.

Fernando Colon-Osorio Photo 2
Shared Bus Arbitration Apparatus Having A Deaf Node

Shared Bus Arbitration Apparatus Having A Deaf Node

US Patent:
5239630, Aug 24, 1993
Filed:
Jul 2, 1990
Appl. No.:
7/547571
Inventors:
Richard F. Lary - Colorado Springs CO
Mohammad V. Abidi - Shrewsbury MA
Nii Quaynor - Shrewsbury MA
Fernando Colon-Osorio - Stow MA
Assignee:
Digital Equipment Corporation - Maynard MA
International Classification:
G06F 1300, G06F 1336
US Classification:
395325
Abstract:
An improved arbitration technique for a computer network system in which multiple nodes communicate using a shared bus, and at least one node has no knowledge of the current status of the arbitration taking place between all nodes in the system. Such a node is called a "deaf node". Each node in the system is assigned an initial arbitration count number, for example, N+1, where N is the node number assigned to the node. The arbitration count number is the number of quiet slots a node must count before trying to transmit on the system bus. The length of a quiet slot is determined by a particular system's electrical characteristics. One quiet slot is reserved as the "deaf node quiet slot", during which a deaf node may transmit. In response to a transmission occurring in the deaf node quiet slot, each node in the system reinitializes its arbitration count number to its initial arbitration count number. Additionally, a node that is not a deaf node, but has detected a system error, may deliberately transmit during the deaf node quiet slot to reinitialize the arbitration count numbers or the internal clocks of all nodes in the system.

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