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Jun Xu

Jun Xu, Oak Ridge, TN US

Patent application numberDescriptionPublished
20110068264Ion mobility sensor system - An ion mobility sensor system including an ion mobility spectrometer and a differential mobility spectrometer coupled to the ion mobility spectrometer. The ion mobility spectrometer has a first chamber having first end and a second end extending along a first direction, and a first electrode system that generates a constant electric field parallel to the first direction. The differential mobility spectrometer includes a second chamber having a third end and a fourth end configured such that a fluid may flow in a second direction from the third end to the fourth end, and a second electrode system that generates an asymmetric electric field within an interior of the second chamber. Additionally, the ion mobility spectrometer and the differential mobility spectrometer form an interface region. Also, the first end and the third end are positioned facing one another so that the constant electric field enters the third end and overlaps the fluid flowing in the second direction.03-24-2011

Jun Xu, Shenzhen City CN

Patent application numberDescriptionPublished
20110060959 Method and Apparatus for Data Receiving - A method and apparatus for receiving data is provided. A data receiving terminal processes each received file block as follows: performing forward error correction decoding for Tb bit sequences to be decoded of the file block respectively, obtaining Tb decoded information bit sequences with a length of K, wherein, the i03-10-2011

Jun Xu, Shenzhen CN

Patent application numberDescriptionPublished
20100185915METHOD AND DEVICE FOR ENCODING THE LOW DENSITY GENERATOR MATRIX CODE - A method and system for encoding the low density generator matrix code are disclosed. The encoding method includes the following steps: S07-22-2010
20100318875 Data Transmission Method and Equipment - The present invention discloses a data transmission method and apparatus. The method comprises: segmenting data to be transmitted into information file segments with a length of Tb bits; performing forward error correction (FEC) coding for Tb information bit sequences composed of bits in same positions in a plurality of continuous information file segments to generate Tb check bit sequences, putting each bit of the check bit sequences in the same position in the check file segments as the corresponding information bit sequences; and transmitting each of the information file segments and check file segments according to their order; the number of bits contained in the information bit sequences being less than or equal to the maximum length of K12-16-2010
20110007661DEVICE AND METHOD FOR INTERLEAVED ENCODING RS CODE - The present invention provides a device and method for interleaved encoding RS code, the RS code used being RS (N, K, S). The method comprises: firstly, writing the data in the data packets to be RS interleaved encoded into the information region of the RS code byte interleaver column-by-column in turn; then, constructing the data of each row of the check region based on the data written into the information region; finally, performing cyclic shifting processing on the data of the check region, and reading out the data of the check region in the RS code byte interleaver column-by-column in turn. The present invention can be used to improve the performance of the entire data packet outputted, thereby enhancing the reliability of the data link layer, by evenly spreading the areas with a filled value of 0 in the last column of the information region that is filled with valid information and by performing cyclic shifting processing on the data of the check region so that the data of that region offer larger time span and good diversity effect when outputted.01-13-2011
20110041034Decoding Method and Device for Reed-Solomon Code - The present invention provides a decoding method and device for Reed-Solomon (RS) codes. The method includes the following steps: A: filling data to be decoded in a byte interleaver by column in turn; B: performing cyclic shift to data in a check region of the byte interleaver by row and/or by column, so as to make the data of each row in the check region become check data in sequence of data of corresponding row in an information region of the byte interleaver; C: performing RS decoding by row method, and writing information data of each row obtained after decoding into the corresponding row in the information region of the byte interleaver in turn; and D: reading business data of the decoded information data from the information region of the byte interleaver by column. The method and device of the present invention can achieve the best interleaving effect.02-17-2011
20110060960Decoding method and device for low density generator matrix codes - A decoding method for low density generator matrix codes is disclosed, which decodes a bit information sequence that is transmitted after encoding with LDGC, the method comprises: S03-10-2011

Jun Xu, Shanghai CN

Patent application numberDescriptionPublished
20080238518PROCESS, VOLTAGE, AND TEMPERATURE COMPENSATED CLOCK GENERATOR - According to some embodiments, a process, voltage, and temperature compensated clock generator is disclosed. The clock generator may be a charge-charge clock generator including a first load capacitive element and a second load capacitive element. A process, voltage, and temperature compensated current source is coupled to the charge-charge clock generator, and is used to charge the first load capacitive element and the second load capacitive element.10-02-2008
20090079403Apparatus to provide a current reference - An apparatus is provided that includes a voltage generator to produce a voltage that compensates for temperature variation and a current source that generates a current reference based on the voltage from the voltage generator.03-26-2009
20110007477ENHANCEMENT OF THERMAL INTERFACE CONDUCTIVITIES WITH CARBON NANOTUBE ARRAYS - A method of forming a well-anchored carbon nanotube (CNT) array, as well as thermal interfaces that make use of CNT arrays to provide very high thermal contact conductance. A thermal interface is formed between two bodies by depositing a continuous array of carbon nanotubes on a first of the bodies so that, on mating the bodies, the continuous array is between surface portions of the first and second bodies. The thermal interface preferably includes a multilayer anchoring structure that promotes anchoring of the continuous array of carbon nanotubes to the first body. The anchoring structure includes a titanium bond layer contacting the surface portion of the first body, and an outermost layer with nickel or iron catalytic particles from which the continuous array of carbon nanotubes are nucleated and grown. Additional thermal interface materials (TIM's) can be used in combination with the continuous array of carbon nanotubes.01-13-2011

Patent applications by Jun Xu, Shanghai CN

Jun Xu, Singapore SG

Patent application numberDescriptionPublished
20090030676METHOD OF DERIVING A COMPRESSED ACOUSTIC MODEL FOR SPEECH RECOGNITION - A method of deriving a compressed acoustic model for speech recognition is disclosed herein. In a described embodiment, the method comprises transforming an acoustic model into an eigenspace at step 01-29-2009
20100268539SYSTEM AND METHOD FOR DISTRIBUTED TEXT-TO-SPEECH SYNTHESIS AND INTELLIGIBILITY - A method and system for distributed text-to-speech synthesis and intelligibility, and more particularly to distributed text-to-speech synthesis on handheld portable computing devices that can be used for example to generate intelligible audio prompts that help a user interact with a user interface of the handheld portable computing device. The text-to-speech distributed system 10-21-2010
20110007911METHODS FOR LOCATING EITHER AT LEAST ONE SOUND GENERATING OBJECT OR A MICROPHONE USING AUDIO PULSES - In a first aspect, there is provided a method for locating a position of at least one sound generating object using at least one audio pulse, with the at least one audio pulse being detected by a plurality of stationary microphones located at a first position being spaced apart by a pre-determined distance. In a second aspect, there is provided a method for locating a position of a microphone using audio pulses emitted from a plurality of sound generating objects. The at least one audio pulse may preferably be in a form of a logarithmic swept sine (LSS) signal, as the LSS signal is detectable at both low volumes and amidst background noises.01-13-2011
20110151586POLYMER ENCAPSULATED PARTICLES AS SURFACE ENHANCED RAMAN SCATTERING PROBES - The present invention refers to a Raman active composite material comprising a metal particle; a coating layer of a Raman active molecule bound to the metal particle; and an encapsulating layer of an amphiphilic polymer bound to the metal particle. The present invention also refers to methods of manufacturing a Raman active composite material described herein and their uses.06-23-2011
20110188660METHOD FOR ENLARGING A LOCATION WITH OPTIMAL THREE DIMENSIONAL AUDIO PERCEPTION - There is provided a method for enlarging a location with optimal three-dimensional audio perception. Optimal three-dimensional audio perception may relate to a fully spatial sound effect. The method includes deriving three-dimensional encoded localization cues from an audio input signal having a first channel signal and a second channel signal; decoding the first channel signal and the second channel signal into a plurality of decoded channel signals, the plurality of decoded channel signals being equal to a number of speaker units; performing crosstalk cancellation on the plurality of decoded channel signals to eliminate crosstalk between the plurality of decoded channel signals; and outputting the plurality of decoded channel signals which have been subjected to crosstalk cancellation to each of the number of speaker units. It is advantageous that the crosstalk cancellation includes further processing to generate a smoothed frequency envelope.08-04-2011
20110238666METHOD AND APPARATUS FOR ACCESSING AN AUDIO FILE FROM A COLLECTION OF AUDIO FILES USING TONAL MATCHING - There is provided a method for accessing at least one audio file from a collection comprising more than one audio file stored within or accessible with an electronic device. The method includes generating one index comprising of information entries obtained from each of the more than one audio file in the collection, with each audio file in the collection information being linked to at least one information entry; receiving an input during an input reception mode; converting the input into a digital signal using an analog-digital converter; analysing the digital signal using either frequency spectrum analysis or melody contour analysis into discrete portions; and comparing the discrete portions with the entries in the index. It is advantageous that the audio file is accessed when the discrete portions substantially coincide with at least one of the information entries in the index. The discrete portions may be musical notes, melody contours or waveforms. The at least one information entry may also be musical notes, melody contours or waveforms. An apparatus employing the aforementioned method is also disclosed.09-29-2011

Patent applications by Jun Xu, Singapore SG

Jun Xu, Guangdong Province CN

Patent application numberDescriptionPublished
20100269010 Encoding Method, Encoding Device, Decoding Method and Decoding Device for Low Density Generator Matrix Codes - An encoding method, encoding device, decoding method and decoding device for low density generator matrix codes (LDGC) are disclosed. Wherein, the encoding method comprises: construct an LDGC mother code set using P LDGC with code rate R10-21-2010
20100281332 ENCODING METHOD AND DEVICE FOR LOW DENSITY GENERATOR MATRIX CODES - The present invention discloses an encoding method and device for Low Density Generator Matrix Codes (LDGC). Wherein, the method comprises: construct an LDGC mother code set using a plurality of LDGC with code rate R11-04-2010

Jun Xu, Guangdong CN

Patent application numberDescriptionPublished
20100275091DECODING METHOD FOR LOW DENSITY GENERATOR MATRIX CODE - The present invention provides a method for decoding a low density generator matrix code (LDGC), applied for decoding transmitted original information bits encoded in LDGC code. The method comprises the following steps: A: deleting a part erased by a channel in a received code word sequence R filled by a known bit sequence to obtain an erased code word sequence Re, and deleting the rows corresponding to the erased part from a transposed matrix G10-28-2010
20110239075CHANNEL CODING, MODULATING AND MAPPING METHOD FOR HYBRID AUTOMATIC REPEAT REQUEST OF LOW DENSITY PARITY CHECK CODE - The present invention discloses a method for channel coding and modulation mapping in HARQ of the LDPC code, comprising: performing structural LDPC encoding of an information bit sequence with a length of K input by a channel encoder, and sending a generated codeword to a HARQ buffer; rearranging codeword bits of a LDPC HARQ mother code in the HARQ buffer, and sequentially selecting codeword bits to generate a binary sequence of a HARQ packet; mapping codeword bits of the HARQ packet to a constellation, and high-order bits in encoding blocks of the HARQ packet being mapped to high reliability bits in the constellation. The present invention provides the LDPC codeword with the maximal constellation gain, so that the LDPC HARQ channel encoding has the optimal performance.09-29-2011
20120020435Constellation Mapping Method - The present invention provides a constellation mapping method, and the method includes: flipping a plurality of bits in each modulation symbol unit to be mapped in part of or all of modulation symbol units to be mapped of a bit sequence to be mapped; and mapping each flipped modulation symbol unit to be mapped as a modulation symbol in a constellation. By means of the present invention, the phenomenon that consecutive bits have the same reliability can be effectively avoided by changing unevenness of reliability distribution of the consecutive bits, and at the same time, the link performance can be improved.01-26-2012

Patent applications by Jun Xu, Guangdong CN

Jun Xu, Beijing CN

Patent application numberDescriptionPublished
20090037401Information Retrieval and Ranking - A learning method is used to generate ranking models. The learning method can create a ranking function that assigns scores to documents and then ranks the documents using the scores. In this learning method, a training set along with performance measures are used to generate weak rankers which a used in the ranking model. During information retrieval, for a given query, the system may return a ranked list of documents in descending order of the relevance scores.02-05-2009
20090259651SEARCH RESULTS RANKING USING EDITING DISTANCE AND DOCUMENT INFORMATION - Architecture for extracting document information from documents received as search results based on a query string, and computing an edit distance between the data string and the query string. The edit distance is employed in determining relevance of the document as part of result ranking by detecting near-matches of a whole query or part of the query. The edit distance evaluates how close the query string is to a given data stream that includes document information such as TAUC (title, anchor text, URL, clicks) information, etc. The architecture includes the index-time splitting of compound terms in the URL to allow the more effective discovery of query terms. Additionally, index-time filtering of anchor text is utilized to find the top N anchors of one or more of the document results. The TAUC information can be input to a neural network (e.g., 2-layer) to improve relevance metrics for ranking the search results.10-15-2009
20090327264Topics in Relevance Ranking Model for Web Search - Described is a technology by which topics corresponding to web pages are used in relevance ranking of those pages. Topics are extracted from each web page of a set of web pages that are found via a query. For example, text such as nouns may be extracted from the title, anchor texts and URL of a page, and used as the topics. The extracted topics from a page are used to compute a relevance score for that page based on an evaluation of that page's topics against the query. The pages are then ranked relative to one another based at least in part on the relevance score computed for each page, such as by determining a matching level for each page, ranking pages by each level, and ranking pages within each level. Also described is training a model to perform the relevance scoring and/or ranking.12-31-2009
20100250655Methods for delivering and receiving interactive multimedia - A method used in a service providing device for delivering interactive multimedia content to a plurality of client devices, comprising: receiving a request for the interactive multimedia content, from at least one of the plurality of client devices; disabling the plurality of client devices from sending the request to the service providing device, according to a predetermined condition; and delivering the interactive multimedia content to the plurality of client devices.09-30-2010
20110219039TECHNIQUE FOR CUSTOMIZING CONTENT - Content can be advantageously customized by use of an accompanying rich media file that characterizes segments in the content file. To perform such customization, the rich media file undergoes parsing (e.g., examination) to identify a location for an overlay in the least one segment of the content file. Thereafter, an overlay is inserted into the at least one content segment. In practice, the overlay is inserted to block objectionable material in the content segment, but the overlay can be inserted to add material, such as to insert an advertisement or a sub-title for example. Inserting the overlay can include physically overlaying a cover layer onto one or more frames of the content segment to add information or block objectionable material in the content segment.09-08-2011
20110260173SEMICONDUCTOR STRUCTURE - A semiconductor structure is provided. The semiconductor structure may comprise a substrate (10-27-2011
20120007146METHOD FOR FORMING STRAINED LAYER WITH HIGH GE CONTENT ON SUBSTRATE AND SEMICONDUCTOR STRUCTURE - A semiconductor structure and a method for forming the same are provided. The semiconductor structure may comprise a substrate (01-12-2012
20120012906Si-Ge-Si SEMICONDUCTOR STRUCTURE HAVING DOUBLE GRADED JUNCTIONS AND METHOD FOR FORMING THE SAME - A Si—Ge—Si semiconductor structure having double compositionally-graded hetero-structures is provided, comprising: a substrate; a buffer layer or an insulation layer formed on the substrate; a strained SiGe layer formed on the buffer layer or the insulation layer, wherein a Ge content in a central portion of the strained SiGe layer is higher than the Ge content in an upper surface or in a lower surface of the strained SiGe layer, and the Ge content presents a compositionally-graded distribution from the central portion to the upper surface and to the lower surface respectively. According to the present disclosure, a compositionally-graded hetero-structure replaces an abrupt hetero-structure so as to form a triangular hole carrier potential well, so that most of hole carriers may be distributed in the strained SiGe layer with high Ge content and a reduction of the carrier mobility caused by interface scattering may be avoided, thus further improving a performance of a device.01-19-2012
20120025279LOW SCHOTTKY BARRIER SEMICONDUCTOR STRUCTURE AND METHOD FOR FORMING THE SAME - A low Schottky barrier semiconductor structure is provided, comprising: a substrate; a SiGe layer with low Ge content formed on the substrate; a channel layer with high Ge content formed on the SiGe layer; a gate stack formed on the substrate and a side wall of one or more layers formed on both sides of the gate stack; a metal source and a metal drain formed in the channel layer and on the both sides of the gate stack respectively; and an insulation layer formed between the substrate and the metal source and between the substrate and the metal drain respectively.02-02-2012
20120030200TOPICS IN RELEVANCE RANKING MODEL FOR WEB SEARCH - Described is a technology by which topics corresponding to web pages are used in relevance ranking of those pages. Topics are extracted from each web page of a set of web pages that are found via a query. For example, text such as nouns may be extracted from the title, anchor texts and URL of a page, and used as the topics. The extracted topics from a page are used to compute a relevance score for that page based on an evaluation of that page's topics against the query. The pages are then ranked relative to one another based at least in part on the relevance score computed for each page, such as by determining a matching level for each page, ranking pages by each level, and ranking pages within each level. Also described is training a model to perform the relevance scoring and/or ranking.02-02-2012
20120032231MOS TRANSISTOR STRUCTURE WITH IN-SITU DOPED SOURCE AND DRAIN AND METHOD FOR FORMING THE SAME - A MOS transistor structure with an in-situ doped source and/or drain and a method for forming the same are provided. The method comprises steps of: providing a substrate; forming a high Ge content layer on the substrate; forming a gate stack on the high Ge content layer and forming a side wall of one or more layers on both sides of the gate stack; etching the high Ge content layer to form a source region and/or a drain region; and forming a source and/or a drain in the source region and/or the drain region respectively by a low-temperature selective epitaxy, and introducing a doping gas during the low-temperature selective epitaxy to heavily dope the source and/or the drain and to in-situ activate a doping element.02-09-2012

Patent applications by Jun Xu, Beijing CN

Jun Xu, Germantown, MD US

Patent application numberDescriptionPublished
20100182947METHOD AND SYSTEM OF PROVIDING LINK ADAPTATION FOR MAXIMIZING THROUGHPUT IN MOBILE SATELLITE SYSTEMS - Various approaches are introduced to provide link adaptation to maximize the resource utilization of the satellite network: (i) a method to adapt the transmission rate for packet voice and data traffics; (ii) a method to control the transmit power of packet voice and data channels; and (iii) a method to accomplish the feedback loop in a secured and correct manner.07-22-2010
20100195563METHOD AND SYSTEM OF PROVIDING EFFICIENT PACKETIZED VOICE COMMUNCATIONS AND DATA BEARERS IN MOBILE SATELLITE SYSTEMS - A broadband satellite communications system comprises forward error correction (FEC) encoder/decoder, interleaver/deinterleaver, puncturing/de-puncturing, scrambler/descrambler, bit to symbol mapping/de-mapping devices, modulator/demodulator, transmit and receive filter; operating in a time-division multiple access (TDMA) system where information is sent in a burst-by-burst fashion during the assigned time slot; supporting diverse traffic types such as voice over internet protocol (VOIP), control messages (DACCH) and keep alive burst (KAB) during silence period and multiple data rates.08-05-2010
20100195564METHOD AND SYSTEM FOR PROVIDING TIMING AND FREQUENCY SYNCHRONIZATION FOR SATELLITE DIVERSITY - An approach facilitates synchronization by providing: (i) a method to analyze the two-satellite synchronization problem in time-frequency domain; and (ii) a two-stage estimation method to accomplish timing and frequency synchronization. The embodiment facilitates satellite diversity. The embodiment applies to a system involving two or more geosynchronous satellites.08-05-2010
20100203036TARGETS FOR TUMOR GROWTH INHIBITION - The present invention relates to methods for treating cancers by manipulating a target gene expression by up-regulation, silencing and/or down-regulation of the gene, such as EGFR-RP, TRA1, MFGE8, TNFSF13 and ZFP236, respectively. The methods are useful in treating cancers and/or inhibiting tumor growth by enhancing expression of a gene that is validated as a target such as ICT1030, for protein, peptide drug and gene therapy modalities; or by RNA interference to silence and/or down-regulate targets such as ICT1024, ICT1025 and ICT1031 and ICB1003 that are validated for antibody, small molecule and other inhibitor drug modalities.08-12-2010

Patent applications by Jun Xu, Germantown, MD US

Jun Xu, Waterloo CA

Patent application numberDescriptionPublished
20100188145SYSTEM AND METHOD FOR CONTROLLING RADIO FREQUENCY TRANSMISSIONS FROM AN ELECTRONIC DEVICE - The disclosure relates to a system and method for attenuating harmonics in output signals. In the system, an electronic circuit for reducing leakage of radio frequency signals from a power amplifier of a wireless communication device is provided. The circuit comprises: a printed circuit board ‘PCB’ having the power amplifier mounted on the PCB; a first electrical track in the PCB connecting to a power input terminal of the power amplifier; and a first capacitor connected to the first electrical track and a ground reference in the PCB, the first capacitor reducing transmission of radio frequency signals from the input terminal of the power amplifier.07-29-2010
20120007670SYSTEM AND METHOD FOR CONTROLLING RADIO FREQUENCY TRANSMISSIONS FROM AN ELECTRONIC DEVICE - The disclosure relates to a system and method for attenuating harmonics in a power amplifier. An electronic circuit for reducing leakage of radio frequency signals from a power amplifier of a wireless communication device is provided. The circuit comprises: a printed circuit board (PCB) having the power amplifier mounted on the PCB; a first electrical track in the PCB connecting to a power input terminal of the power amplifier; and a first capacitor connected to the first electrical track and a ground reference in the PCB, the first capacitor reducing transmission of radio frequency signals from the input terminal of the power amplifier.01-12-2012

Patent applications by Jun Xu, Waterloo CA

Jun Xu, Mason, OH US

Patent application numberDescriptionPublished
20100183559BIFIDOBACTERIUM LONGUM - The multiple embodiments described herein comprise the genome of a probiotic 07-22-2010
20110151526Branched-Chain Fatty Acids And Biological Production Thereof - A method for producing anteiso fatty acid is provided. The method comprises culturing a cell comprising at least one exogenous or overexpressed polynucleotide comprising a nucleic acid sequence encoding a polypeptide that catalyzes at least one of the following reactions: conversion of pyruvate to citramalate; conversion of citramalate to citraconate; conversion of citraconate to β-methyl-D-malate; conversion of β-methyl-D-malate to 2-oxobutanoate; or conversion of threonine to 2-oxobutanoate, under conditions allowing expression of the polynucleotide(s) and production of anteiso fatty acid. Optionally the cell further comprises at least one exogenous or overexpressed polynucleotide comprising a nucleic acid sequence encoding a polypeptide that catalyzes conversion of 2-oxobutanoate to 2-aceto-2-hydroxy-butyrate, conversion of 2-aceto-2-hydroxy-butyrate to 2,3-dihydroxy-3-methylvalerate, and/or conversion of 2,3-dihydroxy-3-methylvalerate to α-keto-3-methylvalerate. A cell that produces anteiso fatty acid and a method of using the cell to produce anteiso fatty acid also are provided.06-23-2011
20110166370Scattered Branched-Chain Fatty Acids And Biological Production Thereof - Methods and cells for producing scattered branched-chain fatty acids are provided. For example, the invention provides a method for producing branched-chain fatty acid comprising a methyl on one or more even number carbons. The method comprises culturing a cell comprising an exogenous or overexpressed polynucleotide comprising a nucleic acid sequence encoding a polypeptide that catalyzes the conversion of propionyl-CoA to methylmalonyl-CoA and/or an exogenous or overexpressed polynucleotide comprising a nucleic acid sequence encoding a polypeptide that catalyzes the conversion of succinyl-CoA to methylmalonyl-CoA, under conditions allowing expression of the polynucleotide(s) and production of branched-chain fatty acid. The cell produces more branched-chain fatty acid comprising a methyl on one or more even number carbons than an otherwise similar cell that does not comprise the polynucleotide(s). A cell that produces branched-chain fatty acid and the branched-chain fatty acid also are provided.07-07-2011
20110171155Intermediates And Surfactants useful In Household Cleaning And Personal Care Compositions, And Methods Of Making The Same - Disclosed herein are novel mixtures of scattered-branched chain fatty acids and derivatives of scattered-branched chain fatty acids. Further disclosed are uses of these mixtures in cleaning compositions (e.g., dishcare, laundry, hard surface cleaners,) and/or personal care compositions (e.g., skin cleansers, shampoo, hair conditioners).07-14-2011
20120012130Method of Cleansing Hair - Method of cleansing hair comprising: (a) applying a composition to the hair; (b) dissolving and lathering the composition using a water-based solvent; (c) rinsing the hair with a water-based solvent; wherein during the rinsing a total of about 100 gram to about 300 gram of water-based solvent per gram of hair (dry weight) is employed; wherein the composition comprises from about 3 wt % to about 35 wt % of a mixture of at least two compounds of Formula I.01-19-2012
20120014900Personal Care Composition Comprising a Near-Terminal Branched Compound - A personal care composition comprising: a near-terminal branched compound according to Formula I; a cosmetically acceptable aqueous carrier; wherein the near-terminal branched compound is not comprised in a gel network.01-19-2012
20120014901Rinse-Off Conditioning Composition Comprising a Near-Terminal Branched Alcohol - A rinse-off conditioning composition comprising: (a) near-terminal branched alcohol according to Formula I; (b) a cationic surfactant; (c) a terminal aminosilicone; wherein the near-terminal branched alcohol and the cationic surfactant are comprised in a lamellar gel matrix.01-19-2012

Patent applications by Jun Xu, Mason, OH US

Jun Xu, Dongyang City CN

Patent application numberDescriptionPublished
20100171071LITHIUM IRON PHOSPHATE HAVING OXYGEN VACANCY AND DOPED IN THE POSITION OF FE AND METHOD OF QUICK SOLID PHASE SINTERING FOR THE SAME - The present invention relates to a lithium ion cathode material lithium iron phosphate having oxygen vacancy and doped in the position of Fe and a preparation method of quick micro-wave sintering for the same. The molecular formula of the product in present invention is expressed as LiFe07-08-2010

Jun Xu, Liberty Lake, WA US

Patent application numberDescriptionPublished
20100129648ELECTRONIC PACKAGING AND HEAT SINK BONDING ENHANCEMENTS, METHODS OF PRODUCTION AND USES THEREOF - Electronic components described herein include a heat generating component surface; a heat sink having a top surface and a bottom surface; and a thermal interface material comprising a phase change material, wherein the heat generating component surface is coupled to the bottom surface of the heat sink by the thermal interface material. Methods of forming an electronic component include: a) providing a heat-generating component surface; b) providing at least one thermal interface material; c) providing a heat sink component having a top surface and a bottom surface; d) depositing the at least one thermal interface material onto at least part of at least one of the surfaces of the heat sink component, and e) coupling the surface of the heat sink component with the thermal interface material layer with the heat generating component surface to produce the electronic component.05-27-2010

Jun Xu, Carlsbad, CA US

Patent application numberDescriptionPublished
20100080555METHOD AND ARCHITECTURE FOR PROVIDING HIGH BANDWIDTH BROADBAND COMMUNICATION TO FAST MOVING USERS - A wireless communication network architecture 04-01-2010
20100101621Solar powered generating apparatus and methods - Methods and apparatus for generation of thermoelectric power. In one embodiment, thermoelectric power is generated via a solar power collector; a solar power receiver; and a power conversion unit. The solar power collector focuses energy from the sun onto the receiver. A phase change material adapted to store the radiant energy from the sun in the form of thermal energy is provided to the receiver. Stored energy is converted, at the power conversion unit, into electricity. A cold thermal storage device for storing cooled phase change material and a hot thermal storage device for storing heated phase change material may also be provided. Pumps utilizing energy produced by the system (or another source) may be provided to move the phase change material. The system may use stacked components to provide an integrated and compact thermoelectric power generation apparatus. Electricity is produced with zero-emissions, low cost, and dependable capacity.04-29-2010

Jun Xu, Tianjin CN

Patent application numberDescriptionPublished
20100082606DIRECTLY OPTIMIZING EVALUATION MEASURES IN LEARNING TO RANK - The present invention provides methods for improving a ranking model. In one embodiment, a method includes the step of obtaining queries, documents, and document labels. The process then initializes active sets using the document labels, wherein two active sets are established for each query, a perfect active set and an imperfect active set. Then, the process optimizes an empirical loss function by the use of the first and second active set, whereby parameters of the ranking model are modified in accordance to the empirical loss function. The method then updates the active sets with additional ranking data, wherein the updates are configured to work in conjunction with the optimized loss function and modified ranking model. The recalculated active sets provide an indication for ranking the documents in a way that is more consistent with the document metadata.04-01-2010

Patent applications by Jun Xu, Tianjin CN

Jun Xu, Encinitas, CA US

Patent application numberDescriptionPublished
20090290872Broadband optical network apparatus and method - Methods and apparatus for providing enhanced optical networking service and performance which are particularly advantageous in terms of low cost and use of existing infrastructure, access control techniques, and components. In the exemplary embodiment, current widespread deployment and associated low cost of Ethernet-based systems are leveraged through use of an Ethernet CSMA/CD MAC in the optical domain on a passive optical network (PON) system. Additionally, local networking services are optionally provided to the network units on the PON since each local receiver can receive signals from all other users. An improved symmetric coupler arrangement provides the foregoing functionality at low cost. The improved system architecture also allows for fiber failure protection which is readily implemented at low cost and with minimal modification.11-26-2009
20090290875Broadband optical network apparatus and method - Methods and apparatus for providing enhanced optical networking service and performance which are particularly advantageous in terms of low cost and use of existing infrastructure, access control techniques, and components. In the exemplary embodiment, current widespread deployment and associated low cost of Ethernet-based systems are leveraged through use of an Ethernet CSMA/CD MAC in the optical domain on a passive optical network (PON) system. Additionally, local networking services are optionally provided to the network units on the PON since each local receiver can receive signals from all other users. An improved symmetric coupler arrangement provides the foregoing functionality at low cost. The improved system architecture also allows for fiber failure protection which is readily implemented at low cost and with minimal modification.11-26-2009

Jun Xu, Sunnyvale, CA US

Patent application numberDescriptionPublished
20090055717ARCHITECTURE AND CONTROL OF REED-SOLOMON LIST DECODING - Systems and methods are provided for implementing list decoding in a Reed-Solomon (RS) error-correction system. A detector can provide a decision-codeword from a channel and can also provide soft-information for the decision-codeword. The soft-information can be organized into an order of combinations of error events for list decoding. An RS decoder can employ a list decoder that uses a pipelined list decoder architecture. The list decoder can include one or more syndrome modification circuits that can compute syndromes in parallel. A long division circuit can include multiple units that operate to compute multiple quotient polynomial coefficients in parallel. The list decoder can employ iterative decoding and a validity test to generate error indicators. The iterative decoding and validity test can use the lower syndromes.02-26-2009
20090063937ARCHITECTURE AND CONTROL OF REED-SOLOMON ERROR-CORRECTION DECODING - Systems and methods are provided for implementing various aspects of a Reed-Solomon (RS) error-correction system. A detector can provide a decision-codeword from a channel and can also provide soft-information for the decision-codeword. If the decision-codeword corresponds to an inner code and an RS code is the outer code, a soft-information map can process the soft-information for the decision-codeword to produce soft-information for a RS decision-codeword. A RS decoder can employ the Berlekamp-Massey algorithm (BMA), list decoding, and a Chien search, and can include a pipelined architecture. A threshold-based control circuit can be used to predict whether list decoding will be needed and can suspend the list decoding operation if it predicts that list decoding is not needed.03-05-2009
20090083608ARCHITECTURE AND CONTROL OF REED-SOLOMON ERROR-CORRECTION DECODING - Systems and methods are provided for implementing various aspects of a Reed-Solomon (RS) error-correction system. A detector can provide a decision-codeword from a channel and can also provide soft-information for the decision-codeword. If the decision-codeword corresponds to an inner code and an RS code is the outer code, a soft-information map can process the soft-information for the decision-codeword to produce soft-information for a RS decision-codeword. A RS decoder can employ the Berlekamp-Massey algorithm (BMA), list decoding, and a Chien search, and can include a pipelined architecture. A threshold-based control circuit can be used to predict whether list decoding will be needed and can suspend the list decoding operation if it predicts that list decoding is not needed.03-26-2009
20090292976ARCHITECTURE AND CONTROL OF REED-SOLOMON ERROR IDENTIFICATION AND EVALUATION - Systems and methods are provided for implementing error identification and evaluation for a Reed-Solomon (RS) error-correction code (ECC) system. The BMA algorithm and/or list decoding may produce one or more error locator polynomials that are related to a decision-codeword. An accelerated Chien search can be used to more quickly evaluate the one or more error locator polynomial. If the accelerated Chien search identifies a valid error locator polynomial, a normal Chien search can be used to identify error locations, and Forney's algorithm or an equivalent technique can be used to evaluate the error values. A RS ECC decoder can include a computation circuit that evaluates an error locator polynomial or an error evaluator polynomial. The computation circuit can include computation components that receive the coefficients of the polynomials.11-26-2009

Jun Xu, Atlanta, GA US

Patent application numberDescriptionPublished
20090285117ESTIMATING ORIGIN-DESTINATION FLOW ENTROPY - The preferred embodiments of the present invention are directed to estimating entropy of origin-destination (OD) data flows in a network. To achieve this, first and second sketches are created corresponding to ingress (i.e. origin) and egress (i.e. destination) flows. The sketches allow estimating entropy associated with data streams as well as entropy associated with an intersection of two or more of the data streams, which provides a mechanism for estimating the entropy OD flows in a network.11-19-2009
20110154119Device and Method for Detecting and Diagnosing Correlated Network Anomalies - A device detects and diagnoses correlated anomalies of a network. The device includes an anomaly detection module receiving a first data stream including an event-series related to the network. The anomaly detection module executes at least one algorithm to detect a potential anomaly in the event-series. The device further includes a correlating module receiving a second data stream including other event-series related to the network. The correlating module determines whether the potential anomaly is false and determines whether the potential anomaly is a true anomaly.06-23-2011
20110307913Modeling User Activity Information Associated with a Network System - Systems and methods to model user activity information associated with a network system are provided. A particular method includes receiving, at a computing device, a request for user activity information associated with selected channels of a television access network that provides multimedia content to users. The method includes executing a model of user activity associated with the television access network at the computing device. The model estimates the user activity information as user multimedia access demands during particular time periods within a day. The method also includes storing the user activity information at a computer-readable non-transitory storage medium.12-15-2011

Jun Xu, Hefei CN

Patent application numberDescriptionPublished
20090002347Pointing Device with Optical Positioning on Low-Diffusive Surfaces - A computer input device includes a light source assembly forming an incident light beam that strikes an area on a surface beneath the input device with large incident angle. A light sensing assembly in the input device is positioned to receive scattered light and includes a band-pass filter. A barrier is located directly above the area where the light beam is incident on the top surface to prevent light from traveling directly from the light source assembly to the light sensing assembly.01-01-2009
20090128495OPTICAL INPUT DEVICE - An input device includes an optical waveguide, one or more light sources, one or more imaging sensors, and a translator. The optical waveguide has an input surface, a back surface substantially opposite the input surface, and a side surface therebetween. The input surface has a plurality of different input locations. The one or more light sources are positioned to introduce light into the optical waveguide. A distortion of each different input location of the input surface causes a portion of light within the optical waveguide to exit from the optical waveguide at a different escape location of the side surface. The one or more imaging sensors are positioned and aimed to detect an escape location of a portion of light exiting from the side surface. The translator determines an input location corresponding to the escape location for each detected escape location.05-21-2009

Jun Xu, Edmond, OK US

Patent application numberDescriptionPublished
20090110683MONOCLONAL ANTIBODIES AGAINST ACTIVATED PROTEIN C - The present invention provides monoclonal antibodies that selectively bind to and inhibit activated protein C without binding to or inhibiting unactivated protein C. Other antibodies inhibit both activated protein C and activation of unactivated protein C. Methods of treatment employing these antibodies are described herein as are methods of screening for and detecting these antibodies.04-30-2009
20090117099EXTRACELLULAR HISTONES AS BIOMARKERS FOR PROGNOSIS AND MOLECULAR TARGETS FOR THERAPY - Hyper-inflammatory responses can lead to a variety of diseases including sepsis. It is now shown that extracellular histones released in response to inflammatory challenge are mediators contributing to endothelial dysfunction, organ failure and death during sepsis. As such, they can be targeted pharmacologically by inhibitors, as well as used as biomarkers for prognosis of sepsis and other diseases.05-07-2009

Jun Xu, Irving, TX US

Patent application numberDescriptionPublished
20090017789Point of presence on a mobile network - A wireless device with a capacity for high bandwidth connectivity adapted to provide access to the Internet or other WAN for a single user or multiple concurrent users. The wireless access device acts as a network point of presence to provide access to a number of different devices. Authorization is performed and billing measures are established in real time. Billing credits may be provided to an account associated with the user of the wireless access device based upon selected metrics (for example, duration of the connection or amount of data passed). In certain implementations, devices that are previously unknown to the wireless access device and that have not received a wireless access device-specific configuration can be provided network access. Thus, instead of a hard-wired point of presence to the Internet, a mobile, ad hoc point of presence is established through the wireless access device.01-15-2009

Jun Xu, Monmouth Junction, NJ US

Patent application numberDescriptionPublished
20080293583Methods for diagnosing mood disorders - The present invention relates generally to the fields of neuroscience, proteomics and mood disorders. More particularly, the present invention relates to the identification of a group of proteins modulated in subjects with a mood disorder; methods for detecting or screening mRNA encoding these proteins and methods for diagnosing mood disorders.11-27-2008

Jun Xu, Greenbelt, MD US

Patent application numberDescriptionPublished
20110214284HIGHLY CONDUCTIVE COMPOSITES - Domain segregation of polymer blends or block copolymers in the presence of thermal conducting high aspect ratio nanocrystals leads to preferential placement of conductive filler either inside one domain, which promote the self-assembly of a thermal and/or electrical conducting pathway composed of high aspect ratio filler. The self-assembly of such thermal and/or electrical conducting pathway effectively enhances the thermal and/or electrical conductivity of the composite with significantly less amount of filler.09-08-2011
20110315914NANOCOMPOSITES WITH HIGH DIELECTRIC CONSTANT - A nanocomposite with high dielectric constant includes both ferroelectric with non-ferroelectric fillers. This may improve, not only the dielectric constant of the nanocomposite but also provide additional thermal, electrical, optical, mechanical, or chemical properties to the nanocomposite for specific applications.12-29-2011

Jun Xu, Gainesville, FL US

Patent application numberDescriptionPublished
20110222597METHOD AND APPARATUS FOR SPARSITY-BASED DE-ARTIFACT FILTERING FOR VIDEO ENCODING AND DECODING - Methods and apparatus are provided for sparsity-based de-artifact filtering for video encoding and decoding. An apparatus includes an encoder (09-15-2011

Jun Xu, Woodbridge CA

Patent application numberDescriptionPublished
20110224038Over-Running Decoupler With Torque Limiter - A method for producing an over-running decoupler that is configured to transmit rotary power between a rotary member and a hub. The over-running decoupler includes a one-way clutch having a clutch spring, a carrier that is coupled to the clutch spring and at least one spring that resiliently couples the carrier to the hub. The method includes: establishing a desired fatigue life of the at least one spring; establishing a design deflection of the at least one spring during resonance, wherein deflection of the at least one spring at the design deflection during resonance does not reduce a fatigue life of the at least one spring below the desired fatigue life; and preventing resonance in the over-running decoupler by controlling a maximum deflection of the at least one spring such that the maximum deflection is less than or equal to the design deflection.09-15-2011
20120055436ENGINE STARTER - An engine starter that employs a clutch between a flywheel or flex plate and a plate structure that is configured to receive rotary power from a starter motor through a transmission. The transmission may include ring and pinion gears or a belt that transmits rotary power between pulleys.03-08-2012

Jun Xu, Frederick, MD US

Patent application numberDescriptionPublished
20120088845Synthesis, capping and dispersion of nanocrystals - Preparation of semiconductor nanocrystals and their dispersions in solvents and other media is described. The nanocrystals described herein have small (1-10 nm) particle size with minimal aggregation and can be synthesized with high yield. The capping agents on the as-synthesized nanocrystals as well as nanocrystals which have undergone cap exchange reactions result in the formation of stable suspensions in polar and nonpolar solvents which may then result in the formation of high quality nanocomposite films.04-12-2012