Patent application number | Description | Published |
20110067302 | CARBON CAPTURE COOLING SYSTEM AND METHOD - A system and method is provided for capturing a carbonous gas and using the captured carbonous gas for cooling purposes. For example, a system may include a carbon capture system configured to collect a carbonous gas from a syngas, and a cooling system having the carbonous gas in a coolant circuit. | 03-24-2011 |
20110162276 | METHOD AND APPARATUS TO TRANSPORT SOLIDS - A method of operating a gasification facility includes channeling a conveying fluid at a first temperature through at least one first steam heating device to increase the temperature of the conveying fluid to a second predetermined temperature. The method also includes channeling the conveying fluid at the second predetermined temperature through a second steam heating device to increase the temperature of the conveying fluid to a third predetermined temperature. The method further includes channeling the conveying fluid at the third predetermined temperature to a solids conveyance system. Solids become entrained within the conveying fluid. The method also includes transporting at least a portion of the solids to a gasification system. | 07-07-2011 |
20110259197 | SYSTEM FOR GAS PURIFICATION AND RECOVERY WITH MULTIPLE SOLVENTS - In one embodiment, a gas purification system is provided. The system includes a first solvent section having a first carbon dioxide (CO | 10-27-2011 |
20110277385 | SYSTEM AND METHOD FOR CONVEYING A SOLID FUEL IN A CARRIER GAS - Systems are provided for gasification operations. The systems may use carbonous gas as part of plant operations. The systems may include a gasifier and a solid fuel feeder. The solid fuel feeder is capable of feeding solid fuel in a carbonous carrier gas to the gasifier during a startup period and also during a steady state period of the gasifier. | 11-17-2011 |
20110277860 | SYSTEMS FOR COMPRESSING A GAS - Systems are provided for gasification operations. The systems may use carbonous gas as part of plant operations. The systems may include a first compressor configured to compress a carbonous gas and a controller. The controller is configured to control the first compressor to transition from compressing a first carbonous gas to compressing a second carbonous gas during startup of a gasification system. | 11-17-2011 |
20120006200 | SYSTEM FOR ACID GAS REMOVAL - A gas purification system including a hydrogen sulfide (H | 01-12-2012 |
20120017562 | HIGH PRESSURE CONVEYANCE GAS SELECTION AND METHOD OF PRODUCING THE GAS - A method is provided that includes removing carbon dioxide from untreated syngas received from a gasifier to produce a gas stream comprising carbon dioxide, modifying the gas stream by adding carbon monoxide, hydrogen, hydrogen sulfide, or any combination thereof, and providing the gas stream from an acid gas remover to a feed system for use as a conveyance gas to convey a feedstock into the gasifier. Systems implementing these and other methods are also provided. | 01-26-2012 |
20120110908 | SYSTEM AND METHOD FOR CONCENTRATING A SOLID FUEL IN A SLURRY - According to various embodiments, a system includes a first cross-flow filter configured to remove at least a first portion of a liquid from a fuel slurry to increase a concentration of a solid fuel in the fuel slurry. The system also includes a gasifier configured to generate a syngas from the fuel slurry. | 05-10-2012 |
20120324790 | METHOD AND APPARATUS TO TRANSPORT SOLIDS - A method of operating a gasification facility includes channeling a conveying fluid at a first temperature through at least one first steam heating device to increase the temperature of the conveying fluid to a second predetermined temperature. The method also includes channeling the conveying fluid at the second predetermined temperature through a second steam heating device to increase the temperature of the conveying fluid to a third predetermined temperature. The method further includes channeling the conveying fluid at the third predetermined temperature to a solids conveyance system. Solids become entrained within the conveying fluid. The method also includes transporting at least a portion of the solids to a gasification system. | 12-27-2012 |
20130330236 | SYSTEM FOR INITIATING A GASIFICATION REACTION IN A GASIFIER - A system includes a gasifier. The gasifier includes a refractory disposed about a gasification chamber and an enclosure disposed about the refractory. The system also includes an ignition device configured to extend into the gasification chamber and to initiate a gasification reaction within the gasification chamber with a refractory temperature of less than approximately 982° C. | 12-12-2013 |
20140026483 | SYSTEMS FOR PREHEATING FEEDSTOCK - Systems for preheating feedstock are provided. In one embodiment, a system includes at least one energy source disposed in a gasification plant and configured to provide an energy, and a feedstock supply configured to deliver a solid feedstock. The system further includes a feed bin disposed downstream of the feedstock supply, wherein the feed bin is configured to receive the solid feedstock and to provide a dry feedstock. The system additionally includes a gasifier disposed downstream from the feed bin, wherein the gasifier is configured to produce a syngas from the dry feedstock. The system further includes a heating system configured to use the energy to heat the solid feedstock directly, heat the solid feedstock indirectly, or a combination thereof, to remove moisture from the solid feedstock in the feed bin. | 01-30-2014 |
20140047975 | pH ADJUSTMENT WITHIN GASIFICATION SYSTEM - A gasification system includes a water source, a downstream system configured to receive a first stream having water from the water source, and a carbon a carbon dioxide injector configured to adjust a pH of the water using a second stream having carbon dioxide to form pH-adjusted water. | 02-20-2014 |
20140134055 | SYSTEM AND METHOD FOR REMOVING RESIDUAL GAS FROM A GASIFICATION SYSTEM - A method includes monitoring a pressure of a gasification system after gasifier shutdown via a pressure sensor, wherein the gasification system includes a gas treatment system and a gasifier configured to output syngas to the gas treatment system during gasification. In addition, the method includes depressurizing the gasification system after gasifier shutdown by opening a flare valve to release gas from the gasifier and the gas treatment system to an atmosphere. The method also includes pressurizing the gasification system after gasifier shutdown, when the monitored pressure reaches a lower pressure threshold, by establishing multiple purge flows of inert gas into the gasification system to remove residual gas from the gasification system. The multiple purge flows are established at different times and at different locations within the gasification system relative to each other. | 05-15-2014 |
20140250858 | INTEGRATED STEAM GASIFICATION AND ENTRAINED FLOW GASIFICATION SYSTEMS AND METHODS FOR LOW RANK FUELS - In one aspect, a gasification system for use with low rank fuel is provided. The system includes a first gasifier positioned to receive a feed of low rank fuel, the first gasifier being configured to gasify the low rank fuel to produce hydrocarbons and fixed carbon. The system also includes a second gasifier configured to produce a syngas stream using the received fixed carbon, a cooler configured to receive and cool the syngas stream, and a first conduit coupled between the cooler and the first gasifier. The first conduit is configured to recycle at least a portion of the syngas stream to the first gasifier to facilitate heating low rank fuel within the first gasifier. The recycled syngas stream is mixed with the hydrocarbons to produce a hydrocarbon-rich syngas stream. The system also includes a second conduit coupled to the first gasifier for receiving the hydrocarbon-rich syngas stream. | 09-11-2014 |
20140263045 | GASIFICATION WASTE WATER TREATMENT USING AIR SEPARATION UNIT OXYGEN - In one embodiment, a method includes gasifying a fuel source using a first oxygen stream supplied from an air separation unit (ASU), discharging a gasifier blowdown from a gasification and scrubbing system configured to gasify the fuel source, generating a grey water from the gasifier blowdown, and biologically treating the grey water in a reactor using a second oxygen stream supplied by the ASU. | 09-18-2014 |
Patent application number | Description | Published |
20100043290 | METHOD AND APPARATUS FOR ASSEMBLING GASIFICATION REACTOR INJECTION DEVICES - A method of assembling a gasification reactor includes extending at least one reactant injection member into the gasification reactor. The method also includes extending at least one fluid injection conduit including a plurality of fluid injection passages defined therein into the gasification reactor. At least a portion of the at least one fluid injection conduit circumscribes at least a portion of the at least one reactant injection member. | 02-25-2010 |
20100183491 | SYSTEMS AND METHODS FOR TREATING A STREAM COMPRISING AN UNDESIRABLE EMISSION GAS - A method for treating a stream comprising an emission gas includes passing portions of the stream comprising the emission gas to two or more reactor units arranged in parallel while subjecting fluid flowing through at least one of the reactor units to pressure control; identifying when at least one of the reactor units trips or is taken out of service; and when at least one of the reactor units trips or is taken out of service, adjusting a flow path of said portion of the stream originally passing to the out-of-service reactor unit such that said portion passes to an absorber for removing the emission gas via a compressor, and subjecting the fluid flowing through all of the in-service reactor units to flow rate control. | 07-22-2010 |
20110033356 | SYSTEMS AND METHODS FOR TREATING A STREAM COMPRISING AN UNDESIRABLE EMISSION GAS - A method for treating a stream comprising an emission gas includes passing portions of the stream comprising the emission gas to two or more reactor units arranged in parallel while subjecting fluid flowing through at least one of the reactor units to pressure control; identifying when at least one of the reactor units trips or is taken out of service; and when at least one of the reactor units trips or is taken out of service, adjusting a flow path of said portion of the stream originally passing to the out-of-service reactor unit such that said portion passes to an absorber for removing the emission gas via a compressor, and subjecting the fluid flowing through all of the in-service reactor units to flow rate control. | 02-10-2011 |
20110107735 | GAS ENGINE DRIVES FOR GASIFICATION PLANTS - The present application provides an integrated gasification combined cycle system. The integrated gasification combined cycle system may include a gas turbine engine, a syngas system for producing a syngas for the gas turbine engine and having a compressor therein, and a second gas engine in communication with the syngas system. The second gas engine dives the compressor via the syngas. | 05-12-2011 |
20110162380 | METHOD TO INCREASE NET PLANT OUTPUT OF A DERATED IGCC PLANT - In certain embodiments, a carbon capture integrated gasification combined cycle (IGCC) system includes a supplemental gas turbine engine configured to burn a high-hydrogen syngas to generate power only for an auxiliary load. | 07-07-2011 |
20120131853 | CARBON CAPTURE SYSTEMS AND METHODS WITH SELECTIVE SULFUR REMOVAL - Disclosed herein are systems and methods for treating carbon dioxide in an environmentally effective manner. Systems and methods include providing a carbon dioxide enriched stream having CO | 05-31-2012 |
20130247766 | SYSTEM FOR RECOVERING ACID GASES FROM A GAS STREAM - In one embodiment, a gas purification system is provided. The system includes a first section having a first solvent path and a first gas path. The first gas path is configured to flow a stripping gas to remove hydrogen sulfide (H | 09-26-2013 |
Patent application number | Description | Published |
20120015444 | Sensor Housing and Reagent Chemistry - A sensor comprises a sensor housing, having a channel; a porous substrate, in the channel; an analysis chemistry reagent, on the porous substrate; and a nozzle, in fluid connection with the channel. The porous substrate fills a cross section of the channel, and the cross-sectional area of the channel at the porous substrate is greater than the cross-sectional area at the nozzle. | 01-19-2012 |
20120015445 | Portable Fluorimetric Apparatus, Method and System - A fluorimetric system, apparatus and method are disclosed to measure an analyte concentration in a sample. A sensor reagent housing is also disclosed which comprises a channel and a porous medium having an analysis chemistry reagent, such as a nucleic acid analysis chemistry reagent. The apparatus and system are portable for field use, with an apparatus housing having a size adapted to fit into a user's hand. An apparatus also includes a sensing chamber and cover, a user interface, a light source, a photomultiplier tube, an amplifier, an A/D converter, a memory, and a processor. In various embodiments, the processor performs a data fitting, determines a sample reaction rate parameter, and determines the analyte concentration from a comparison of the sample reaction rate parameter with stored calibration data. The processor may also generate the calibration data and site-specific offset factors, and modify the calibration data using an offset factor. | 01-19-2012 |
20140329235 | Sensor Housing and Reagent Chemistry - A sensor comprises a sensor housing, having a channel; a porous substrate, in the channel; an analysis chemistry reagent, on the porous substrate; and a nozzle, in fluid connection with the channel. The porous substrate fills a cross section of the channel, and the cross-sectional area of the channel at the porous substrate is greater than the cross-sectional area at the nozzle. | 11-06-2014 |
Patent application number | Description | Published |
20080282583 | Systems, Devices, and/or Methods Regarding Excavating - Certain exemplary embodiments can provide a system, which can comprise a bucket excavation controller. The bucket excavation controller can be adapted to control one or more digging functions of a mining excavator. For example, the bucket excavation controller can be adapted to automatically control a crowd motion of the mining excavator. | 11-20-2008 |
20100289443 | Limiting Peak Electrical Power Drawn By Mining Excavators - The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power drawn from the electrical power source. When the input electrical power drawn by the mining excavator exceeds the upper limit, electrical power is supplied by the electrical energy storage unit, such as an ultracapacitor bank. The ultracapacitor bank may be charged by the electrical power source during off-peak intervals. Electrical power generated by electrical motors operating in a regeneration interval may also be recaptured and stored in the electrical energy storage unit. | 11-18-2010 |
20110094808 | Peak Demand Reduction in Mining Haul Trucks Utilizing an On-Board Energy Storage System - A mining haul truck driven by electrical wheel motors is powered by a trolley power system during an uphill climb. Retard energy captured during braking action on either the uphill climb or downhill descent is stored by an on-board electrical energy storage system. Electrical power is supplied from the on-board electrical energy storage system to reduce the peak power demand on the trolley power system during the uphill climb. One implementation of the on-board electrical energy storage system uses an ultracapacitor system. | 04-28-2011 |
20110094841 | System and Method for Reinjection of Retard Energy in a Trolley-Based Electric Mining Haul Truck - Retard energy regenerated from an electrical motor during braking action is reinjected into a power system via trolley lines. The retard energy may be transmitted to a bidirectional electric substation and returned to a utility grid. The retard energy may also be transmitted to an auxiliary energy storage system, such as an ultracapacitor system or a battery system. Installing trolley lines for mining haul trucks on a downhill slope may be used to capture and re-use substantial quantities of retard energy. | 04-28-2011 |
20110175579 | SYSTEM AND METHOD FOR PROVIDING AUXILIARY POWER BY REGENERATION POWER MANAGEMENT IN MOBILE MINING EQUIPMENT - A method for operating an ultracapacitor system used in a mining excavator powered by an electrical power source. The method includes the step of detecting whether a line power from the electrical power source is present. Next, a voltage level of the ultracapacitor system is measured if the line power is not present. The measured voltage level is then compared with a minimum voltage level for the ultracapacitor system. If the measured voltage level is more than the minimum voltage level, auxiliary power is supplied from the ultracapacitor system to operate mining excavator systems. The auxiliary power may be used to power electronic systems and components such as computers, displays, control systems, gas insulated switchgear and lighting systems. | 07-21-2011 |
20120079821 | EXCAVATOR DRIVE SYSTEM WITH BI STATE MOTOR TRANSFER SWITCHES - An excavator drive system wherein one of a pair of propulsion motors shares one of a pair of inverter power sources with another of a pair of motors dedicated to crowd and hoist motions. A pair of non-volatile bi-state switches, triggered under control of a controller, allow sharing of inverters between hoist and propel | 04-05-2012 |
20120081818 | System and Method for Fast Discharge of a Ring Motor Field - High-power synchronous motors are commonly used in mining operations, for example, in gearless draglines, gearless conveyor drives, and gearless mill drives. Substantial electromagnetic energy is stored in the inductive field windings. In the event of a system fault, such as a short in the direct current power source exciting the field windings, the electromagnetic energy needs to be discharged from the field windings. This electromagnetic energy is typically dissipated as waste heat through a resistor. Disclosed is a field discharge system in which the electromagnetic energy is captured and stored as electrical energy in a capacitor. If an ultracapacitor bank is used for storage, the charged ultracapacitor bank can be used as a backup or auxiliary power source for mining operations. The discharge time is sufficiently small that high speed circuit breakers are not needed to disconnect stator windings from the alternating current power source when a fault occurs. | 04-05-2012 |
20120175209 | System and Method for Reinjection of Retard Energy in a Trolley-Based Electric Mining Haul Truck - Retard energy regenerated from an electrical motor during braking action is reinjected into a power system via trolley lines. The retard energy may be transmitted to a bidirectional electric substation and returned to a utility grid. The retard energy may also be transmitted to an auxiliary energy storage system, such as an ultracapacitor system or a battery system. Installing trolley lines for mining haul trucks on a downhill slope may be used to capture and re-use substantial quantities of retard energy. | 07-12-2012 |
20120257424 | Limiting Peak Electrical Power Drawn by Mining Excavators - The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power drawn from the electrical power source. When the input electrical power drawn by the mining excavator exceeds the upper limit, electrical power is supplied by the electrical energy storage unit, such as an ultracapacitor bank. The ultracapacitor bank may be charged by the electrical power source during off-peak intervals. Electrical power generated by electrical motors operating in a regeneration interval may also be recaptured and stored in the electrical energy storage unit. | 10-11-2012 |
20130082045 | Dissipation of the Braking Energy of Electrically Powered Mining Equipment by Liquid-Cooled Braking Resistors - Braking current generated by an electrical motor on mining equipment during a retard interval is switched through one or more grid resistors that are liquid cooled. Under low ambient temperatures, a heating current can be switched through the grid resistors when the electrical motor is not operating in a retard interval. An integrated cooling system can be used to cool grid resistors and power modules. Heat dissipated by the grid resistors and the power modules can be circulated through auxiliary heating loops to heat portions of the mining equipment under low ambient temperatures. Multiple liquid-cooled power modules, liquid-cooled grid resistors, auxiliary heating loops, control modules, radiators, and pumps can be coupled by a liquid distribution system with various combinations of parallel and serial branches. Temperature, pressure, and flow rate in each branch can be independently controlled. Operation of the integrated cooling system can be controlled by a computational system. | 04-04-2013 |
Patent application number | Description | Published |
20140358676 | METHODS AND APPARATUS TO DETERMINE AN ADJUSTMENT FACTOR FOR MEDIA IMPRESSIONS - Examples to determine media impressions are disclosed. An example method includes determining an exposure of first media, wherein the exposure occurs after a cookie identifier is received at a computing device, wherein the cookie identifier is received from a database proprietor, determining a first panelist identifier associated with the exposure based on the cookie identifier, determining a second panelist identifier associated with the exposure based on a determination of a user identity by a panelist meter associated with the computing device, determining an adjustment factor by comparing the first panelist identifier and the second panelist identifier, determining a number of impressions of second media from data logged by the database proprietor, the data logged in response to requests transmitted to the database proprietor in response to clients accessing the second media, and applying the adjustment factor to the number of impressions to determine an adjusted number of impressions. | 12-04-2014 |
20150019327 | METHODS AND APPARATUS TO DETERMINE IMPRESSIONS USING DISTRIBUTED DEMOGRAPHIC INFORMATION - An example method involves receiving, at a first internet domain, a first request from a client device, the first request indicative of access to media at the client. The first request includes identifying information identifying the media. A substitute value is generated at the first internet domain, the substitute value corresponding to the identifying information and obfuscating an identity of the media. If the client is not known, a response including the substitute value in place of the identifying information is sent from the first internet domain to the client. The response instructs the client to send a second request to a second internet domain, the second request includes the substitute value to hide the identity of the media within the second internet domain. If the client is known, an impression of the media is logged without sending the second request to the second internet domain. | 01-15-2015 |
Patent application number | Description | Published |
20120158954 | METHODS AND APPARATUS TO DETERMINE IMPRESSIONS USING DISTRIBUTED DEMOGRAPHIC INFORMATION - Example methods and apparatus to determine media impressions using distributed demographic information are disclosed. A disclosed example method to monitor media content exposure involves receiving, at a first internet domain, a first request from a client computer, the first request indicative of access to the media at the client computer, sending, from the first internet domain, a response to the client computer, the response to instruct the client computer to send a second request to an intermediary associated with a sub-domain of a second internet domain, the second request to be indicative of the access to the media at the client computer, the intermediary to transmit an indication of the second request to an entity of the second internet domain, and logging an impression of the media. | 06-21-2012 |
20120239809 | METHODS AND APPARATUS TO DETERMINE IMPRESSIONS USING DISTRIBUTED DEMOGRAPHIC INFORMATION - Example methods and apparatus to determine impressions using distributed demographic information are disclosed. A disclosed example method to monitor media exposure involves receiving, at a first internet domain, a first request from a client computer, the first request indicative of access to the media at the client computer. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain to the client computer, the response to instruct the client computer to send a second request to a second internet domain, the second request to be indicative of access to the media at the client computer. If the client computer is known, an impression of the media is logged. | 09-20-2012 |
20130097311 | METHODS AND APPARATUS TO DETERMINE IMPRESSIONS USING DISTRIBUTED DEMOGRAPHIC INFORMATION - Example methods and apparatus to determine impressions using distributed demographic information are disclosed. A disclosed example method to monitor media exposure involves receiving, at a first internet domain, a first request from a client computer, the first request indicative of access to the media at the client computer. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain to the client computer, the response to instruct the client computer to send a second request to a second internet domain, the second request to be indicative of access to the media at the client computer. If the client computer is known, an impression of the media is logged. | 04-18-2013 |
20130097312 | METHODS AND APPARATUS TO DETERMINE IMPRESSIONS USING DISTRIBUTED DEMOGRAPHIC INFORMATION - Example methods and apparatus to determine impressions using distributed demographic information are disclosed. A disclosed example method to monitor media exposure involves receiving, at a first internet domain, a first request from a client computer, the first request indicative of access to the media at the client computer. The example method also involves determining if the client computer is known. If the client computer is not known, a response is sent from the first internet domain to the client computer, the response to instruct the client computer to send a second request to a second internet domain, the second request to be indicative of access to the media at the client computer. If the client computer is known, an impression of the media is logged. | 04-18-2013 |
20130145022 | METHODS AND APPARATUS TO DETERMINE MEDIA IMPRESSIONS - Examples to determine media impressions are disclosed. An example method includes detecting a cookie identifier established by a database proprietor at a computing device, determining an impression of media, wherein the impression occurs after the cookie identifier is established, determining a first panelist identifier associated with the impression based on the cookie identifier, determining a second panelist identifier associated with the impression based on determination of a user identity by a panelist meter associated with the computing device, and storing an adjustment factor determined by comparing the first panelist identifier and the second panelist identifier. | 06-06-2013 |
20130148895 | METHODS, APPARATUS, AND ARTICLES OF MANUFACTURE TO MEASURE GEOGRAPHICAL FEATURES USING AN IMAGE OF A GEOGRAPHICAL LOCATION - Methods, apparatus, and articles of manufacture to measure geographical features using an image of a geographical location are disclosed. An example method includes dividing, with a processor, an image of a geographic area of interest into a plurality of geographical zones, the geographical zones being representative of different geographical areas having approximately equal physical areas, measuring, with the processor, a geographical feature represented in the image for corresponding ones of the plurality of geographical zones, storing descriptions for the geographical zones in a computer memory, and storing values representative of the geographical feature of the geographical zones. | 06-13-2013 |
20140250223 | METHODS AND APPARATUS TO DETERMINE IMPRESSIONS USING DISTRIBUTED DEMOGRAPHIC INFORMATION - Methods and apparatus to determine media impressions using distributed demographic information are disclosed. An method includes sending to a client computer, via a processor serving a first internet domain, a response to a first request, the first request sent to the first internet domain and indicative of access to media at the client computer, the response to instruct the client computer to send a second request to an intermediary serving a sub-domain of a second internet domain, the second request to be indicative of the access to the media at the client computer, wherein the intermediary is to transmit first data about the second request to a data collection server of an audience measurement entity and second data about the second request to an entity of the second internet domain and logging an impression of the media. | 09-04-2014 |
20150016730 | METHODS, APPARATUS, AND ARTICLES OF MANUFACTURE TO MEASURE GEOGRAPHICAL FEATURES USING AN IMAGE OF A GEOGRAPHICAL LOCATION - Methods, apparatus, and articles of manufacture to measure geographical features using an image of a geographical location are disclosed. An example method includes dividing an image of a geographic area of interest into geographical zones, the geographical zones being representative of different physical geographical areas; modifying boundaries of a first one of the geographical zones to more closely conform to an observable landmark or a geographical location observable by a person located in the first one of the geographical zones; storing descriptions for the geographical zones in a computer memory based on the modified boundaries of the first one of the geographical zones; and storing a value representative of a geographical feature represented in the image for the first one of the geographical zones. | 01-15-2015 |
Patent application number | Description | Published |
20100161617 | INDEX SERVER ARCHITECTURE USING TIERED AND SHARDED PHRASE POSTING LISTS - An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers. | 06-24-2010 |
20130171930 | ULTRASONIC NEAR-FIELD COMMUNICATION - Systems and methods for near-field communications with a mobile device are disclosed. In one embodiment, a computer-implemented method for near-field communication may comprise: detecting, by a source device located at a point-of-sale, the proximity of a receiving device; encoding purchase data on an audio signal with one or more ultrasonic frequencies; and transmitting the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device. | 07-04-2013 |
20140040014 | TRANSACTION DATA CAPTURE SYSTEM FOR A POINT OF SALE SYSTEM - A method of operation of a transaction collection system includes: initializing a sniff daemon on the POS terminal; determining a sales transaction on the POS terminal; recording a transaction document of the sales transaction on a memory of the POS terminal; collecting the transaction document from the memory with the sniff daemon; and providing the transaction document for interpretation on an external system. | 02-06-2014 |
20140344165 | ULTRASONIC NEAR-FIELD COMMUNICATION - Systems and methods for near-field communications with a mobile device are disclosed. In one embodiment, a computer-implemented method for near-field communication may comprise: detecting, by a source device located at a point-of-sale, the proximity of a receiving device; encoding purchase data on an audio signal with one or more ultrasonic frequencies; and transmitting the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device. | 11-20-2014 |