Patent application number | Description | Published |
20080261451 | PRE-DISTORTION BASED IMPEDENCE DISCONTINUITY REMEDIATION FOR VIA STUBS AND CONNECTORS IN PRINTED CIRCUIT BOARD DESIGN - Embodiments of the present invention address deficiencies of the art in respect to via structure utilization in a PCB design and provide a novel and non-obvious method, system and computer program product for impedance discontinuity remediation for via stubs and connectors in a PCB. In one embodiment a method for impedance discontinuity remediation in a PCB can be provided. The method can include configuring a pre-distortion filter to negate an impedance discontinuity in an electrical signal caused by a transmission line with one of a via stub or a connector. The method further can include pre-distortion filtering an electrical signal before transmitting the electrical signal over the transmission line. Finally, the method can include transmitting the pre-distortion filtered electrical signal over the transmission line. | 10-23-2008 |
20090106976 | METHOD FOR REDUCING NOISE COUPLING IN HIGH SPEED DIGITAL SYSTEMS - Methods and systems for reducing noise coupling in high-speed digital systems. Exemplary embodiments include a method, including etching a plurality of high speed signal traces onto a core insulating layer, forming trenches on respective sides of the plurality of high speed signal traces, thereby removing insulating material adjacent to the plurality of high speed signal traces and forming pedestals having remaining insulating material, the plurality of high speed signal traces disposed on and coupled to the remaining insulating material, coupling pre-preg material on the high speed signal traces, removing the pre-preg material adjacent the trenches, thereby retaining the pre-preg material aligned with the high speed signal traces, and heating and pressing a core layer to the pre-preg layer, and heating and pressing the pre-preg layer to the core insulating layer. | 04-30-2009 |
20090107705 | METHODS AND SYSTEMS FOR REDUCING NOISE COUPLING IN HIGH SPEED DIGITAL SYSTEMS - Methods and systems for reducing noise coupling in high-speed digital systems. Exemplary embodiments include a method, including etching a plurality of high speed signal traces onto a core insulating layer, forming trenches on respective sides of the plurality of high speed signal traces, thereby removing insulating material adjacent to the plurality of high speed signal traces and forming pedestals having remaining insulating material, the plurality of high speed signal traces disposed on and coupled to the remaining insulating material, coupling pre-preg material on the high speed signal traces, removing the pre-preg material adjacent the trenches, thereby retaining the pre-preg material aligned with the high speed signal traces, and heating and pressing a core layer to the pre-preg layer, and heating and pressing the pre-preg layer to the core insulating layer. | 04-30-2009 |
20090164672 | Computer Memory Subsystem For Enhancing Signal Quality - Computer memory subsystems are disclosed for enhancing signal quality that include: one or more memory modules; a memory bus; and a memory controller connected to the memory modules through the memory bus, the memory controller including a reception buffer connected to the memory bus, the reception buffer capable of receiving an input signal from one of the memory modules, the memory controller including a reception characteristics table capable of storing reception characteristics for each of the memory modules connected to the memory controller, the memory controller including an equalizer connected to the reception buffer and the reception characteristics table, the equalizer capable of equalizing the received input signal in dependence upon the reception characteristics for the memory module from which the input signal was received, and the memory controller including memory controller logic connected to the equalizer, the memory controller logic capable of processing the equalized input signal. | 06-25-2009 |
20110149501 | ROTATING HARD DRIVE INSTALLATION IN A COMPUTER CHASSIS - A system comprises a server chassis and first and second hard disk drive carriers, wherein each carrier supports a hard disk drive. A first hinge rotatably connects a distal end of the first hard disk drive carrier to a first side of the chassis, wherein the first hinge allows the carrier to rotate about a first hinge axis between an open position and a closed position. The first hard disk drive carrier rotates in a first plane between an open position extending beyond the front of the chassis and a closed position within the chassis. A second hinge rotatably connects a distal end of the second hard disk drive carrier to a second side of the chassis that opposite the first side of the chassis, wherein the hinge allows the carrier to rotate about a second hinge axis between an open position and a closed position. The second hard disk drive carrier rotates in a second plane between an open position extending beyond the front of the chassis and a closed position within the chassis, wherein the second plane is parallel to the first plane. | 06-23-2011 |
20120126149 | Controlling Electromagnetic Radiation In A Data Center - Controlling electromagnetic (‘EM’) radiation in a data center having a number EM sections, including: receiving, by an EM controller, a specification of preferred EM radiation characteristics for the data center; and setting, by the EM controller, a state of each EM section in accordance with the specification, where the state of each EM section may be one of: an absorption state in which the EM section absorbs EM radiation or a reflection state in which the EM section reflects EM radiation. | 05-24-2012 |
20120170191 | Midplane With A Direct Connect Adapter - A midplane that includes a direct connect adapter mounted within the midplane, the direct connect adapter including: a first opening for receiving a first computing component connector on a first side of the midplane; and a second opening for receiving a second computing component connector on a second side of the midplane, and the direct connect adapter mounted within the midplane electrically coupling the first computing component connector and the second computing component connector without electrically coupling the first computing component connector and the second computing component connector to the midplane. | 07-05-2012 |
20120235068 | Controlling Electromagnetic Radiation In A Data Center - Controlling electromagnetic (‘EM’) radiation in a data center having a number EM sections, including: receiving, by an EM controller, a specification of preferred EM radiation characteristics for the data center; and setting, by the EM controller, a state of each EM section in accordance with the specification, where the state of each EM section may be one of: an absorption state in which the EM section absorbs EM radiation or a reflection state in which the EM section reflects EM radiation. | 09-20-2012 |
20120250527 | Determining Connectivity Of A High Speed Link That Includes An AC-Coupling Capacitor - Methods, apparatuses, and computer products are provided for determining connectivity of a high speed link that includes an ac-coupling capacitor. Embodiments include transmitting, by a connectivity tester, a test signal on a lane within the high speed link; detecting on the lane, by the connectivity tester, a standing wave generated in response to the transmission of the test signal; determining, by the connectivity tester, whether the standing wave is resonating; if the standing wave is resonating, indicating, by the connectivity tester, that the lane of the high speed link has a closed connection; and if the standing wave is not resonating, indicating, by the connectivity tester, that the lane of the high speed link has an open connection. | 10-04-2012 |
20120327622 | PRE-DISTORTION BASED IMPEDENCE DISCONTINUITY REMEDIATION FOR VIA STUBS AND CONNECTORS IN PRINTED CIRCUIT BOARD DESIGN - Embodiments of the present invention address deficiencies of the art in respect to via structure utilization in a PCB design and provide a novel and non-obvious method, system and computer program product for impedance discontinuity remediation for via stubs and connectors in a PCB. In one embodiment a method for impedance discontinuity remediation in a PCB can be provided. The method can include configuring a pre-distortion filter to negate an impedance discontinuity in an electrical signal caused by a transmission line with one of a via stub or a connector. The method further can include pre-distortion filtering an electrical signal before transmitting the electrical signal over the transmission line. Finally, the method can include transmitting the pre-distortion filtered electrical signal over the transmission line. | 12-27-2012 |
20130010639 | SWITCH FABRIC MANAGEMENT - Techniques are disclosed for managing a switch fabric. In one embodiment, a server system is provided that includes a midplane, one or more server cards, switch modules and a management controller. The midplane may include a fabric interconnect for a switch fabric. The one or more server cards and the switch modules may be operatively connected to the midplane. The switch modules may be configured to switch network traffic for the one or more server cards. The management controller may be configured to manage the switch modules via the fabric interconnect. | 01-10-2013 |
20130086248 | Managing Stability Of A Link Coupling An Adapter Of A Computing System To A Port Of A Networking Device For In-Band Data Communications - Managing stability of a link coupling an adapter of a computing system to a port of a networking device for in-band data communications, the adapter and the network device coupled for out-of-band data communications to a management module, where link stability is managed by: monitoring link health including retrieving adapter link statistics from the adapter and networking device link statistics from the networking device; determining, in dependence upon the adapter and networking device link statistics, whether the link health meets predefined health acceptability criteria; and if the link health does not meet predefined health acceptability criteria, instructing the adapter to execute one or more predefined corrective actions. | 04-04-2013 |
20130094348 | SWITCH FABRIC MANAGEMENT - Techniques are disclosed for managing a switch fabric. In one embodiment, a server system is provided that includes a midplane, one or more server cards, switch modules and a management controller. The midplane may include a fabric interconnect for a switch fabric. The one or more server cards and the switch modules may be operatively connected to the midplane. The switch modules may be configured to switch network traffic for the one or more server cards. The management controller may be configured to manage the switch modules via the fabric interconnect. | 04-18-2013 |
20130097577 | Impedance Compensation For A Differential Pair Of Conductive Paths - Methods, apparatus, and products for impedance compensation for a differential pair of conductive paths, including: determining the differential impedance and conductor geometry for the differential pair of conductive paths; determining the path length differential between the conductive paths in the differential pair of conductive paths; determining a centerline path to follow for a shorter conductive path in the differential pair of conductive paths, wherein the centerline path lengths the shorter conductive path such that the length of each conductive path in the differential pair of conductive paths is identical within a predetermined threshold; determining a number of subdivisions of one or more serpentine segments on one of the conductive paths in the differential pair; and determining, in dependence upon the differential impedance at each of the subdivisions of the one or more serpentine segments, a serpentine segment path width for the serpentine segment. | 04-18-2013 |
20130159959 | Phase Compensation In A Differential Pair Of Transmission Lines - Phase compensation in a differential pair of transmission lines, including: identifying, by a phase compensation module, a plurality of direction changes in the differential pair of transmission lines; determining, by the phase compensation module for each direction change in the differential pair of transmission lines, a direction change angle; and determining, by the phase compensation module for each direction change in the differential pair of transmission lines, the geometry of one or more phase correction humps to include in one transmission line of the differential pair of transmission lines in dependence upon the direction change angle. | 06-20-2013 |
20140013017 | I2C TO MULTI-PROTOCOL COMMUNICATION - A method, device and computer program product for providing multi-protocol communication on an inter-integrated circuit (I2C) bus. The method for providing multi-protocol communication on an inter-integrated circuit (I2C) bus can include issuing a start command by a bus management device onto the I2C bus. Thereafter, the bus management device can send an embedded differential protocol to a non-I2C device. Once communication with the non-I2C device is completed, the bus management device can issue a stop command to release the I2C bus. In one aspect of this embodiment, the method can include receiving a response from the non-I2C device. | 01-09-2014 |
20140191141 | CONTROLLING ELECTROMAGNETIC RADIATION IN A DATA CENTER - Controlling electromagnetic (‘EM’) radiation in a data center having a number EM sections, including: receiving, by an EM controller, a specification of preferred EM radiation characteristics for the data center; and setting, by the EM controller, a state of each EM section in accordance with the specification, where the state of each EM section may be one of: an absorption state in which the EM section absorbs EM radiation or a reflection state in which the EM section reflects EM radiation. | 07-10-2014 |