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Megarity
Mark Megarity, Ottawa CA
| Patent application number | Description | Published |
|---|---|---|
| 20090080329 | Egress traffic management system for a data communications system - An egress traffic management system for a data communication system is disclosed. The egress traffic management system makes use of a hierarchical queue ID header paradigm that enables data packets to be directed for egress traffic management to either one of a plurality of assignable queues in a main egress queue module or to one of a plurality of distributed queue modules via a common queue of the main egress queue module. This behavior enables egress traffic management functionality and scale to be varied independently and in a cost-effective manner to meet evolving requirements of a data communications system. | 03-26-2009 |
| 20090086636 | Method for communicating backpressure messages in a data communications system - A method for communicating backpressure messaging over a serial encoded link is disclosed. Embodiments of the invention enable advanced backpressure signaling to be retrofitted into legacy systems to achieve performance improvements and support new or enhanced services. Specifically, such signaling enables per-context and per-priority backpressure signaling information to be conveyed by a backpressure message; thereby enabling flow control to be performed in accordance with a priority or context associated with a traffic flow, or flows, carried over the serial link. | 04-02-2009 |
| 20090276550 | SERIAL LINK BUFFER FILL-LEVEL COMPENSATION USING MULTI-PURPOSE START OF PROTOCOL DATA UNIT TIMING CHARACTERS - Embodiments of the invention provide improved timing compensation for a bidirectional serial link in order to relax accuracy requirements of clock sources used for the link. Fill levels of receiver buffers at either ends of the link are used to determine a particular type of start of PDU (SOP) character sequence to use when forming a PDU for transmission over the link. When a given type of SOP character sequence is present in a PDU received at one end of the link, a next PDU to be transmitted from the same end of the link is delayed by a predetermined amount of time to allow the receiver buffer at the other end of the link to decrease its fill level before receiving the next PDU. | 11-05-2009 |
| 20090323526 | PROVIDING BACKPRESSURE FLOW CONTROL TO SPECIFIC TRAFFIC FLOWS - A method and apparatus for providing backpressure flow control to traffic flows of a data communications system are provided. Embodiments of the invention selectively apply a measure of flow control to traffic flows responsive to a level of congestion at a packet processor of the system. These embodiments advantageously provide flexibility in the application of flow control to specific traffic flows in accordance with one or more of characteristics of those traffic flows. | 12-31-2009 |
Mark R. Megarity, Ottawa CA
| Patent application number | Description | Published |
|---|---|---|
| 20100046548 | MULTI-PURPOSE PDU CONTAINER FOR DELINEATING PDU DATAGRAMS AND PDU DATAGRAM ATTRIBUTES IN AN 8B/10B CODED SYSTEM - A method of reducing overhead for datagrams that are transmitted to or received from a serial link that reduces overhead to no more than four bytes. The datagram includes at least a Protocol Data Unit (PDU) field, a Start-of-PDU Header (SPH) field, and a SPH Control (SCH) field. The SPH and SCH fields consist of two bytes. The datagram may additionally include End-of-PDU Header (EPH) and EPH Control (ECH) fields. A method may also involve substitution of flags for subsequent headers that are identical to previous headers. | 02-25-2010 |
William M. Megarity, Roxboro, NC US
| Patent application number | Description | Published |
|---|---|---|
| 20110232889 | COMPUTER RACK COOLING USING INDEPENDENTLY-CONTROLLED FLOW OF COOLANTS THROUGH A DUAL-SECTION HEAT EXCHANGER - Embodiments of the present invention include a cooling system and method for cooling a computer rack by circulating liquid coolant through different sections of a rack heat exchanger under separately controlled flow and temperature conditions. In a method according to one embodiment, a first liquid coolant is supplied to a first section of an air-to-liquid heat exchanger. A second liquid coolant is supplied to a second section of the air-to-liquid heat exchanger at a different temperature than the first liquid coolant. Airflow is generated through rack-mounted computer components to the first and second sections of the air-to-liquid heat exchanger. The flow rates of the first and second liquid coolants are independently controlled to enforce a target cooling parameter. The independent operation of the first and second fin tube sections allows for the increased use of un-chilled water without sacrificing heat removal objectives. | 09-29-2011 |
William M. Megarity, Durham, NC US
| Patent application number | Description | Published |
|---|---|---|
| 20110286178 | Heat Sink For Distributing A Thermal Load - Heat sinks for distributing a thermal load are disclosed that include: a bottom plate; a front top plate; a back top plate; and a plurality of heat-dissipating fins connected to the bottom plate, the front top plate, and the back top plate, wherein the front top plate and the back top plate are separated by a predetermined distance. | 11-24-2011 |
William Mark Megarity, Raleigh, NC US
| Patent application number | Description | Published |
|---|---|---|
| 20080265723 | Mount for air filter and bezel assembly - A mount for a bezel/air filter assembly for use in mounting the bezel/air filter assembly directly to the rack or cabinet in which electrical equipment is mounted or contained. The mount is affixed to the rack or cabinet rather than to the electrical equipment mounted or contained in the rack or cabinet, making use of the normally unused frontal area along the rail forming the front of the rack or cabinet, maximizing air flow to the equipment mounted in the rack or contained in the cabinet and allowing greater packaging density. Also, by using the rack or cabinet (rather than the equipment) as a support element, the mount is substantially stronger than if the mount was affixed to the chassis. | 10-30-2008 |