Abstract: One or more decoupling capacitors are coupled to a low inductance mount that is connected to the bottom layer of a printed circuit board (PCB) on which a semiconductor module is mounted. The low inductance mount includes a magnetic planar structure with vias that are coupled to the one or more decoupling capacitors and to like vias positioned on the PCB.

Abstract: A system for providing power and ground vias for power distributions systems includes first and second conductive layers on a microelectronic package. The conductive layers may include one or more conductive components such as, but not limited to, power planes, ground planes, pads, traces, and the like for electrically connecting to electronic components. A via may electrically connect the first and second conductive layers. The via may have a cross-section of at least three partially-overlapping shapes. Each of the shapes partially overlaps at least two of the other shapes. The shapes may be, for example, circular, triangular, rectangular, square, polygonal, rhomboidal shape, or any other shape.

Abstract: A method, system or computer usable program product for performing timing analysis on an array circuit including receiving in memory a set of pins to be timed, selecting with a data processor a cross section of the array circuit including the set of pins wherein a backtrace is performed from the set of pins to identify a set of bus groups, each bus group having a plurality of timing pins, and assigning timing for an assigned pin of a first bus group equal to timing calculated for a surrogate pin of the first bus group based on array circuit regularity.

Abstract: A method, system or computer usable program product for performing timing analysis on an array circuit including receiving in memory a set of pins to be timed, selecting with a data processor a cross section of the array circuit including the set of pins wherein a backtrace is performed from the set of pins to identify a set of bus groups, each bus group having a plurality of timing pins, and assigning timing for an assigned pin of a first bus group equal to timing calculated for a surrogate pin of the first bus group based on array circuit regularity.

Abstract: A system for providing power and ground vias for power distributions systems includes first and second conductive layers on a microelectronic package. The conductive layers may include one or more conductive components such as, but not limited to, power planes, ground planes, pads, traces, and the like for electrically connecting to electronic components. A via may electrically connect the first and second conductive layers. The via may have a cross-section of at least three partially-overlapping shapes. Each of the shapes partially overlaps at least two of the other shapes. The shapes may be, for example, circular, triangular, rectangular, square, polygonal, rhomboidal shape, or any other shape.

Abstract: Multi-layer printed circuit boards (PCB) with power plane islands to isolate noise coupling are provided. In addition, methods and computer program products for manufacturing multi-layer PCBs with power plane islands to isolate noise coupling are provided. Embodiments include a PCB comprising a first power plane coupled to a power supply, the first power plane within a layer of the PCB; a second power plane and a third power plane, the second power plane and the third power plane within another layer of the PCB, the second power plane and the third power plane separated from each other within the other layer of the PCB; and a via bridge structure connecting the first power plane to both the second power plane and the third power plane.

Abstract: One or more decoupling capacitors are coupled to a low inductance mount that is connected to the bottom layer of a printed circuit board (PCB) on which a semiconductor module is mounted. The low inductance mount includes a magnetic planar structure with vias that are coupled to the one or more decoupling capacitors and to like vias positioned on the PCB.

Abstract: A system for providing power and ground vias for power distributions systems includes first and second conductive layers on a microelectronic package. The conductive layers may include one or more conductive components such as, but not limited to, power planes, ground planes, pads, traces, and the like for electrically connecting to electronic components. A via may electrically connect the first and second conductive layers. The via may have a cross-section of at least three partially-overlapping shapes. Each of the shapes partially overlaps at least two of the other shapes. The shapes may be, for example, circular, triangular, rectangular, square, polygonal, rhomboidal shape, or any other shape.

Abstract: Provided is a reinforced matrix for molten carbonate fuel cell, wherein a mechanical strength of the matrix is increased by adding a reinforcing agent having a low melting point.

Abstract: The present invention provides for simulating signal transitions. Circuit characteristics are generated. Circuit characteristics are loaded into memory. Circuit behaviour is simulated. A non-leading edge circuit transition is captured. This occurs in software.

Abstract: A hard disk drive with a control circuit that controls a heating element in a head of the drive. The heating element is driven by a voltage. The control circuit varies the voltage during read and write operations of the drive. The voltages are varied to minimize fluctuations in the flying height of the drive during the write operations.

Abstract: Provided is a reinforced matrix for molten carbonate fuel cell, wherein a mechanical strength of the matrix is increased by adding a reinforcing agent having a low melting point.

Abstract: A hard disk drive that includes a heater to heat an internal cavity of the drive. The disk drive may also have a temperature sensor to sense the temperature of the internal cavity, and a control circuit to control the heater and maintain the disk drive cavity, to be no less than a threshold temperature. The threshold temperature may correspond to a point where the heads of the drive undergo a significant degradation of performance. Maintaining the disk drive cavity temperature at or above the threshold temperature insures that the heads will not degrade due to temperature.

Abstract: A method for dynamic in-situ characterization of in-plane and out-plane thermal drift of a hard disk drive head suspension is provided. A first data track is written. Amplitude and amplitude modulation of the write data signal are measured and track center is determined. Data tracks are then written for a selected time period. Amplitude and amplitude modulation of the write data signal is measured and a new track center of a last data track is determined. Any difference between the track center of the first data track and the track center of the last data track represents in-plane drift. The amplitude and amplitude modulation of the two write data signals is compared and any difference between the measured values is proportional to out-plane drift.

Abstract: A hard disk drive that includes a heater to heat an internal cavity of the drive. The disk drive may also have a temperature sensor to sense the temperature of the internal cavity, and a control circuit to control the heater and maintain the disk drive cavity, to be no less than a threshold temperature. The threshold temperature may correspond to a point where the heads of the drive undergo a significant degradation of performance. Maintaining the disk drive cavity temperature at or above the threshold temperature insures that the heads will not degrade due to temperature.

Abstract: A magnetic disk for self-cleaning a disk drive recording head communicating with a surface of the magnetic disk. The magnetic disk contains an abrasive cleaning zone of a designated width located at an outer periphery on the surface of the magnetic disk. When a recording head periodically passes over and contacts the abrasive surface of the cleaning zone, particles or other contaminants adhered to the recording head are mechanically removed by the relative motion between the rotating disk and the recording head. The recording head may then be returned to a landing zone on the disk, if the cleaning takes place at the end of a stop cycle, or the recording head may be returned to a track in a data zone on the disk if the cleaning takes place during normal disk drive operations.

Abstract: A magnetic disk for self-cleaning a disk drive recording head communicating with a surface of the magnetic disk. The magnetic disk contains an abrasive cleaning zone of a designated width located at an outer periphery on the surface of the magnetic disk. When a recording head periodically passes over and contacts the abrasive surface of the cleaning zone, particles or other contaminants adhered to the recording head are mechanically removed by the relative motion between the rotating disk and the recording head. The recording head may then be returned to a landing zone on the disk, if the cleaning takes place at the end of a stop cycle, or the recording head may be returned to a track in a data zone on the disk if the cleaning takes place during normal disk drive operations.

Abstract: A magnetic disk for a disk drive includes a landing zone with a first lubrication layer having a first thickness located at an inner periphery on a surface of the magnetic disk. A data zone with a second lubrication layer having a second thickness is located on the surface of the magnetic disk outwardly of the landing zone. The first lubrication layer is thicker than the second lubrication layer. The first lubrication layer is about 16 to about 22 angstroms (.ANG.), and the second lubrication layer is about 8 to about 11 angstroms (.ANG.).

Abstract: A method for checking top and end of tape for data recording and reproducing apparatus is disclosed. The method includes a first step for sensing a transparent tape section of a start portion of a tape wound about a tape take-up reel so as to sense the tape top. At a second step, a tape supply reel rotation period is detected and the detected supply reel rotation period is compared to a preset value. When the detected supply reel rotation period is not longer than the preset value, the tape end is checked at a predetermined period. However, when the detected supply reel rotation period is longer than the preset value, no tape end is checked. The method makes top-end checking time become optimal and saves power of the recording and reproducing apparatus, and reduces pulse noise generated in turning on or turning off the top-end checking LED.

Abstract: An electron cyclotron resonance apparatus capable of achieving a cryogenic cooling effect. By a radioactive motion property of radicals, a side wall etch of a photoresist can be avoided in fabrication of next generation integrated micropatterns. The apparatus also eliminates conflicting increase/decrease phenomenons occurring between the etch rate and the anisotropy and between the etch rate and the uniformity in general etching equipments. This achieves not only a desired vertical etch, but also a rapid etch rate. As a result, it is possible to eliminate factors of causing a complexity in the process using a conventional triple-layer photoresist (TLR) or multilayer photoresist (MTR) and degrading the yield and the productivity.