Patent application number | Description | Published |
20090108384 | Optoelectronic Device with Germanium Photodetector - An optoelectronic device comprises a photodetector feature, an interfacial layer disposed above at least a portion of the photodetector feature, and a vertical contact disposed on at least a portion of the interfacial layer. The photodetector feature comprises germanium and is operative to convert a light signal into an electrical signal. The interfacial layer comprises nickel. Finally, the vertical contact is operative to transmit the electrical signal from the photodetector feature. | 04-30-2009 |
20090304327 | METHOD AND APPARATUS FOR IMPLEMENTING OPTICAL DEFLECTION SWITCHING USING COUPLED RESONATORS - A method of implementing optical deflection switching includes directing a tuning operation at a specific region of coupled optical resonators coupled to an input port, a first output port and a second output port, the coupled optical resonator including a plurality of cascaded unit cells; wherein the tuning operation interrupts a resonant coupling between one or more of the unit cells of the coupled resonators so as to cause an input optical signal from the input port to be directed from the first output port to the second output port. | 12-10-2009 |
20100213561 | Optoelectronic Device with Germanium Photodetector - An optoelectronic device comprises a photodetector feature, an interfacial layer disposed above at least a portion of the photodetector feature, and a vertical contact disposed on at least a portion of the interfacial layer. The photodetector feature comprises germanium and is operative to convert a light signal into an electrical signal. The interfacial layer comprises nickel. Finally, the vertical contact is operative to transmit the electrical signal from the photodetector feature. | 08-26-2010 |
Patent application number | Description | Published |
20110024608 | AVALANCHE IMPACT IONIZATION AMPLIFICATION DEVICES - A semiconductor photodetector may provide charge carrier avalanche multiplication at high field regions of a semiconductor material layer. A semiconductor current amplifier may provide current amplification by impact ionization near a high field region. A plurality of metal electrodes are formed on a surface of a semiconductor material layer and electrically biased to produce a non-uniform high electric field in which the high electric field strength accelerates avalanche electron-hole pair generation, which is employed as an effective avalanche multiplication photodetection mechanism or as an avalanche impact ionization current amplification mechanism. | 02-03-2011 |
20110042650 | SINGLE AND FEW-LAYER GRAPHENE BASED PHOTODETECTING DEVICES - A photodetector which uses single or multi-layer graphene as the photon detecting layer is disclosed. Multiple embodiments are disclosed with different configurations of electrodes. In addition, a photodetector array comprising multiple photodetecting elements is disclosed for applications such as imaging and monitoring. | 02-24-2011 |
20110101308 | Utilization of Organic Buffer Layer to Fabricate High Performance Carbon Nanoelectronic Devices - A fabrication process for a nanoelectronic device and a device are provided. Channel material is deposited on a substrate to form a channel. A source metal contact and a drain metal contact are deposited on the channel material, and the source metal contact and the drain metal contact are on opposing ends of the channel material. A polyhydroxystyrene derivative is deposited on the channel material. A top gate oxide is deposited on the polymer layer. A top gate metal is deposited on the top gate oxide. | 05-05-2011 |
20120298962 | Utilization of Organic Buffer Layer to Fabricate High Performance Carbon Nanoelectronic Devices - A fabrication process for a nanoelectronic device and a device are provided. Channel material is deposited on a substrate to form a channel. A source metal contact and a drain metal contact are deposited on the channel material, and the source metal contact and the drain metal contact are on opposing ends of the channel material. A polyhydroxystyrene derivative is deposited on the channel material. A top gate oxide is deposited on the polymer layer. A top gate metal is deposited on the top gate oxide. | 11-29-2012 |
Patent application number | Description | Published |
20080244072 | DISTRIBUTED RESOURCE ALLOCATION IN STREAM PROCESSING SYSTEMS - A system and method for resource allocation includes, in a network having nodes and links, injecting units of flow for at least one commodity at a source corresponding to the at least one commodity. At each node, queue heights, associated with the at least one commodity, are balanced for queues associated with each of one or more outgoing paths associated with that node. An amount of commodity flow is pushed across a link toward a sink, where the amount of commodity flow is constrained by a capacity constraint. Flow that reached the sink is absorbed by draining the queues. | 10-02-2008 |
20080250087 | System and Apparatus for Optimally Trading Off the Replication Overhead and Consistency Level In Distributed Applications - Methods and systems are provided for optimally trading off replication overhead and consistency levels in distributed data replication where nodes are organized in a hierarchy. The root node has the original data that need to be replicated at all other nodes, and the replicated copies have a freshness threshold that must be satisfied. The data are propagated through periodic updates in the hierarchy. Each node periodically sends data to its child nodes. Given the freshness threshold, an algorithm and its distributed protocol can determine the optimal update period for each link of the hierarchy such that the freshness threshold is satisfied for every node and the overall replication overhead is minimized. The systems and methods can be used in any scenario where replicated data have consistency requirements, such as in a replicate overlay assisted resource discovery system. | 10-09-2008 |
20080253283 | Methods and Apparatus for Effective On-Line Backup Selection for Failure Recovery in Distributed Stream Processing Systems - A failure recovery framework to be used in cooperative data stream processing is provided that can be used in a large-scale stream data analysis environment. Failure recovery supports a plurality of independent distributed sites, each having its own local administration and goals. The distributed sites cooperate in an inter-site back-up mechanism to provide for system recovery from a variety of failures within the system. Failure recovery is both automatic and timely through cooperation among sites. Back-up sites associated with a given primary site are identified. These sites are used to identify failures within the primary site including failures of applications running on the nodes of the primary site. The failed applications are reinstated on one or more nodes within the back-up sites using job management instances local to the back-up sites in combination with previously stored state information and data values for the failed applications. In additions to inter-site mechanisms, each one of the plurality of sites employs an intra-site back-up mechanism to handle failure recoveries within the site. | 10-16-2008 |
20080304516 | Distributed Joint Admission Control And Dynamic Resource Allocation In Stream Processing Networks - Methods and apparatus operating in a stream processing network perform load shedding and dynamic resource allocation so as to meet a pre-determined utility criterion. Load shedding is envisioned as an admission control problem encompassing source nodes admitting workflows into the stream processing network. A primal-dual approach is used to decompose the admission control and resource allocation problems. The admission control operates as a push-and-pull process with sources pushing workflows into the stream processing network and sinks pulling processed workflows from the network. A virtual queue is maintained at each node to account for both queue backlogs and credits from sinks. Nodes of the stream processing network maintain shadow prices for each of the workflows and share congestion information with neighbor nodes. At each node, resources are devoted to the workflow with the maximum product of downstream pressure and processing rate, where the downstream pressure is defined as the backlog difference between neighbor nodes. The primal-dual controller iteratively adjusts the admission rates and resource allocation using local congestion feedback. The iterative controlling procedure further uses an interior-point method to improve the speed of convergence towards optimal admission and allocation decisions. | 12-11-2008 |
20090177521 | MARKET DEMAND ESTIMATION METHOD, SYSTEM AND APPARATUS - A method to estimate demand of a market for a service is disclosed. The method includes selecting a set of feasible service offerings to offer for sale to the market from a set of candidate service offerings, observing a response of the market to the set of feasible service offerings offered for sale, and estimating a demand of the market for the service based upon the observed response. Each service offering of the set of feasible service offerings and the set of candidate service offerings is defined by a price and a service level. | 07-09-2009 |
20090300183 | Distributed Joint Admission Control and Dynamic Resource Allocation in Stream Processing Networks - Methods and apparatus operating in a stream processing network perform load shedding and dynamic resource allocation so as to meet a pre-determined utility criterion. Load shedding is envisioned as an admission control problem encompassing source nodes admitting workflows into the stream processing network. A primal-dual approach is used to decompose the admission control and resource allocation problems. The admission control operates as a push-and-pull process with sources pushing workflows into the stream processing network and sinks pulling processed workflows from the network. A virtual queue is maintained at each node to account for both queue backlogs and credits from sinks. Nodes of the stream processing network maintain shadow prices for each of the workflows and share congestion information with neighbor nodes. At each node, resources are devoted to the workflow with the maximum product of downstream pressure and processing rate, where the downstream pressure is defined as the backlog difference between neighbor nodes. The primal-dual controller iteratively adjusts the admission rates and resource allocation using local congestion feedback. The iterative controlling procedure further uses an interior-point method to improve the speed of convergence towards optimal admission and allocation decisions. | 12-03-2009 |
Patent application number | Description | Published |
20120092979 | METHOD OF PARALLEL BIT-WISE HOLOGRAPHIC DATA STORAGE USING A PARALLEL LIGHT SOURCE - The present techniques provide techniques for outputting counter-propagating parallel light waves to pre-record a holographic data disk. The parallel light waves are transmitted through a holographic system via a fiber optic bundle including a plurality of polarization-maintaining (PM) optical fibers. Each of the PM optical fibers in the fiber optic bundle may have one or more of a different wavelength, a different coherence length, and a different polarization orientation to reduce crosstalk in the disk. Furthermore, the fiber optic bundle array is rotated to produce interference spots indicative of micro-holograms according to the data track pitch of the holographic disk over which the fiber optic bundle is outputting the light waves. | 04-19-2012 |
20120092980 | REPLICATION AND FORMATTING METHOD AND SYSTEM FOR BIT-WISE HOLOGRAPHIC STORAGE - The present techniques provide methods and systems for recording micro-holograms on a holographic disk using a plurality of counter-propagating light beams in parallel. The parallel counter-propagating light beams overlap to form interference patterns on a data layer and over multiple data tracks in the holographic disk. Rotating the disk enables the parallel recording of micro-holograms over multiple data tracks, thus reducing recording time. Further, the illumination pattern may include illuminated spots and non-illuminated regions, such that each illumination spot may cover a relatively small fraction of the data layer plane, possibly controlling the depth spread of the recorded micro-hologram. In some embodiments, data in the parallel signal beams may be retrieved from a master holographic disk or may be modulated into the parallel signal beams. | 04-19-2012 |
20120103066 | Gas Detection System - A gas detection system is provided for identifying a gas. The gas detection system includes a sensing module with a hollow chamber enclosed by a chamber housing. Additionally, the sensing module includes an optical sensing fiber positioned within the hollow chamber. The optical sensing fiber includes a gas sensor including a fiber Bragg grating positioned at a grating location along the optical sensing fiber, and a sensing layer affixed to an exterior surface of the optical sensing fiber at the grating location. After the gas is directed into the hollow chamber, the sensing layer and the gas exchange heat energy, based in part on a heat transfer coefficient of the gas. The exchange of the heat energy induces a shift in a Bragg resonant wavelength of the fiber Bragg grating which exceeds a threshold shift required for detection, where the shift is used to identify the gas. | 05-03-2012 |
20120127843 | SERVOING SYSTEM FOR MASTER WITH PARALLEL TRACKS IN A HOLOGRAPHIC REPLICATION SYSTEM - Techniques are provided for controlling the reading of optical data from a master disk in a holographic replication system. Imperfections in the master disk or movement of the disk during a recording process may cause source beams to deviate from target data tracks. In some embodiments, a detector system is used to determine the focus and alignment of the source beams on the master disk, as well as the tilt and rotation of the disk with respect to the holographic replication system. The detector system may detect deviations in the intensity distribution of the reflections of the source beams and generate an error signal corresponding to focusing, tracking, tilt, and/or rotational errors. Servo-mechanical devices may actuate optical components to compensate for such errors. | 05-24-2012 |
20120154821 | SYSTEM FOR MONITORING A RELATIVE DISPLACEMENT OF COMPONENTS - A system is provided for monitoring a relative displacement of a pair of end-winding components. The system includes a structure mounted to the end-winding components at an angle with respect to the end-winding components for monitoring the relative displacement. The system further includes an optical fiber with a first portion including a fiber Bragg grating mounted to a surface of the structure to experience a strain resulting from a strain of the structure due to the relative displacement. The optical fiber includes a second portion internally routed through in the structure to the first portion mounted to the surface. The structure is configured so that the strain produced by the structure limits a magnitude of the strain of the fiber Bragg grating within a predetermined range over a span of the relative displacement of the end-winding components. | 06-21-2012 |
20130323023 | Dynamic Fiber Temperature Sensing Package And Method Of Assembling The Same - A dynamic fiber temperature sensing package is provided herein. The sensing package includes a support structure, a holder coupled to the support structure, a sheath coupled to the support structure via the holder, and a fiber optic temperature sensor positioned within the sheath. The holder includes a material having a first thermal conductivity and the sheath includes a material having a second thermal conductivity, wherein the second thermal conductivity is greater than the first thermal conductivity. | 12-05-2013 |
Patent application number | Description | Published |
20140183745 | GATE ELECTRODE(S) AND CONTACT STRUCTURE(S), AND METHODS OF FABRICATION THEREOF - A conductive structure(s), such as a gate electrode(s) or a contact structure(s), and methods of fabrication thereof are provided. The conductive structure(s) includes a first conductive layer of a first conductive material, and a second conductive layer of a second conductive material. The second conductive layer is disposed over the first conductive layer, and at least a portion of the first conductive material includes grains having a size larger than a defined value, and at least a second portion of the second conductive material includes grains having a size less than the defined value. In one embodiment, the first and second conductive materials are the same conductive material, with different-sized grains. | 07-03-2014 |
20150076624 | INTEGRATED CIRCUITS HAVING SMOOTH METAL GATES AND METHODS FOR FABRICATING SAME - Integrated circuits with smooth metal gates and methods for fabricating integrated circuits with smooth metal gates are provided. In an embodiment, a method for fabricating an integrated circuit includes providing a partially fabricated integrated circuit including a dielectric layer formed with a trench bound by a trench surface. The method deposits metal in the trench and forms an overburden portion of metal overlying the dielectric layer. The method includes selectively etching the metal with a chemical etchant and removing the overburden portion of metal. | 03-19-2015 |
20150228543 | INTEGRATED CIRCUITS WITH A TUNGSTEN COMPONENT AND METHODS FOR PRODUCING SUCH INTEGRATED CIRCUITS - Integrated circuits with tungsten components having a smooth surface and methods for producing such integrated circuits are provided. A method of producing the integrated circuits includes forming a nucleation layer overlying a substrate and within a cavity, where the nucleation layer includes tungsten. A nucleation layer thickness is reduced, and a fill layer if formed overlying the nucleation layer. | 08-13-2015 |
Patent application number | Description | Published |
20120240027 | System and Method for Displaying a Document - Data defining a document comprising a plurality of elements is received from an online document processing service. First layout data is generated for the plurality of elements occurring at or before a specified location of the document. A segment comprising a reduced portion of a particular element located at the specified location is defined, when it is determined that an available page height is insufficient to lay out the particular element, and second layout data associated with the segment is generated. A page associated with the specified location is displayed based on the first layout data and the second layout data. | 09-20-2012 |
20120240028 | System, Method, and Architecture for Displaying a Document - Data defining a document is received from an online document processing service, and a plurality of elements within the document is identified. The plurality of elements may comprise paragraphs, lines of text, images, tables, headers, footers, footnotes, footnote reference information, etc. For each of the plurality of elements, a respective object comprising a layout function and a render function is generated. An object corresponding to an element is invoked to generate layout data associated with the element, and the element is rendered based on the layout data. | 09-20-2012 |
Patent application number | Description | Published |
20110240276 | HEAT EXCHANGER HAVING AN INLET DISTRIBUTOR AND OUTLET COLLECTOR - An improved heat exchanger assembly having an inlet header in hydraulic communication with an outlet header via a plurality of multi-channel flat refrigerant tubes, in which the multi-channel flat refrigerant tubes are substantially perpendicular to the headers. Interconnecting the refrigerant tubes are corrugated fins. The plurality of refrigerant tubes together with the fins defines the core of the heat exchanger assembly. The heat exchanger assembly also includes a distributor tube disposed in the inlet header cavity and a collector tube disposed in the outlet header cavity. The distributor tube and collector tube have cooperating features for archiving uniform refrigerant distribution through the refrigerant tubes. | 10-06-2011 |
20110290465 | ORIENTATION INSENSITIVE REFRIGERANT DISTRIBUTOR TUBE - A heat exchanger assembly having an inlet header, an outlet header spaced from the inlet header, a plurality of refrigerant tubes hydraulically connecting the inlet header with the outlet header. A distributor tube having a plurality of orifices disposed in the inlet header, wherein the orifices are arranged along the distributor tube such that at least one orifice is oriented in the liquid phase of the refrigerant pressed against the internal surface of the distributor tube regardless of orientation of the evaporator. The orifices may be arranged in a random order about the distributor tube, positioned in groups of at least two at predetermined locations, or spiraled along the distributor tube. | 12-01-2011 |
20130306280 | HEAT EXCHANGER HAVING A CONDENSATE EXTRACTOR - The disclosure presents a heat exchanger assembly having a first manifold, a second manifold spaced from the first manifold, a plurality of refrigerant tubes extending between and in hydraulic communication with the first and second manifolds, a plurality of corrugated fins inserted between the plurality of refrigerant tubes, and a condensate extractor having a comb baffle portion with fingers inserted between the plurality of refrigerant tubes and a conveyance portion. The comb baffle portion is configured to extract condensate from between the plurality of refrigerant tubes and the conveyance portion is configured to convey condensate away from the heat exchanger assembly. | 11-21-2013 |
20150122470 | HEAT PUMP HEAT EXCHANGER HAVING A LOW PRESSURE DROP DISTRIBUTION TUBE - A heat pump heat exchanger includes a first manifold, a second manifold spaced from the first manifold, a plurality of refrigerant tubes hydraulically connecting the manifolds, and a distribution tube disposed in the first manifold. The distribution tube includes an inlet end, a distal end opposite the inlet end, a plurality of orifices between the inlet end and the distal end. The distribution tube also includes a terminal aperture immediately adjacent the distal end, wherein the terminal aperture includes an open aperture area greater than any one of the open orifice area. The open aperture area is large enough to provide a uniform refrigerant collection with acceptable minimal pressure drop in evaporative mode, but small enough to prevent vapor overflow to an area of the manifold adjacent to the distal end in condenser mode. The length of the distribution tube is less than 3/4 the length of the first manifold. | 05-07-2015 |
Patent application number | Description | Published |
20150067088 | SCHEDULING AND EXECUTION OF DAG-STRUCTURED COMPUTATION ON RDMA-CONNECTED CLUSTERS - A server and/or a client stores a metadata hash map that includes one or more entries associated with keys for data records stored in a cache on a server, wherein the data records comprise a directed acyclic graph (DAG), and the directed acyclic graph is comprised of a collection of one or more nodes connected by one or more edges, each of the nodes representing one or more tasks ordered into a sequence, and each of the edges representing one or more constraints on the nodes connected by the edges. Each of the entries stores metadata for a corresponding data record, wherein the metadata comprises a server-side remote pointer that references the corresponding data record stored in the cache. A selected data record is accessed using a provided key by: (1) identifying potentially matching entries in the metadata hash map using the provided key; (2) accessing data records stored in the cache using the server-side remote pointers from the potentially matching entries; and (3) determining whether the accessed data records match the selected data record using the provided key. | 03-05-2015 |
20150088791 | GENERATING DATA FROM IMBALANCED TRAINING DATA SETS - Injecting generated data samples into a minority data class of an imbalanced training data set is provided. In response to receiving an input to balance the imbalanced training data set that includes a majority data class and the minority data class, a set of data samples is generated for the minority data class. A distance is calculated from each data sample in the set of generated data samples to a center of a kernel that includes a set of data samples of the majority data class. Each data sample in the set of generated data samples is stored within a corresponding distance score bucket based on the calculated distance of a data sample. Generated data samples are selected from a number of highest ranking distance score buckets. The generated data samples selected from the number of highest ranking distance score buckets are injected into the minority data class. | 03-26-2015 |
20150261886 | ADAPTIVE SAMPLING SCHEMES FOR CLUSTERING STREAMING GRAPHS - A method for clustering vertices of streaming graphs includes: maintaining one or more clusters, assigning a random number to an incoming edge, computing a sampling threshold based on the current clusters, and adjusting the current clusters based on the random number and the sampling threshold. | 09-17-2015 |
20150286819 | INSIDER THREAT PREDICTION - A method for predicting insider threat includes mining electronic data of an organization corresponding to activity of an entity, determining features of the electronic data corresponding to the activity of the entity, classifying the features corresponding to the activity of the entity, determining sequences of classified features matching one or more patterns of insider threat, scoring the entity according to matches of the classified features to the one or more patterns of insider threat, and predicting an insider threat corresponding to the entity according to the score. | 10-08-2015 |