Patents by Inventor Peidong Wang
Peidong Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230298566Abstract: Systems and methods are provided for obtaining, training, and using an end-to-end AST model based on a neural transducer, the end-to-end AST model comprising at least (i) an acoustic encoder which is configured to receive and encode audio data, (ii) a prediction network which is integrated in a parallel model architecture with the acoustic encoder in the end-to-end AST model, and (iii) a joint layer which is integrated in series with the acoustic encoder and prediction network. The end-to-end AST model is configured to generate a transcription in the second language of input audio data in the first language such that the acoustic encoder learns a plurality of temporal processing paths.Type: ApplicationFiled: March 15, 2022Publication date: September 21, 2023Inventors: Jinyu LI, Jian XUE, Matthew John POST, Peidong WANG
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Patent number: 11636848Abstract: A method of attention-based end-to-end (A-E2E) automatic speech recognition (ASR) training, includes performing cross-entropy training of a model, based on one or more input features of a speech signal, determining a posterior probability vector at a time of a first wrong token among one or more output tokens of the model of which the cross-entropy training is performed, and determining a loss of the first wrong token at the time, based on the determined posterior probability vector. The method further includes determining a total loss of a training set of the model of which the cross-entropy training is performed, based on the determined loss of the first wrong token, and updating the model of which the cross-entropy training is performed, based on the determined total loss of the training set.Type: GrantFiled: May 11, 2021Date of Patent: April 25, 2023Assignee: TENCENT AMERICA LLCInventors: Peidong Wang, Jia Cui, Chao Weng, Dong Yu
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Publication number: 20210264901Abstract: A method of attention-based end-to-end (A-E2E) automatic speech recognition (ASR) training, includes performing cross-entropy training of a model, based on one or more input features of a speech signal, determining a posterior probability vector at a time of a first wrong token among one or more output tokens of the model of which the cross-entropy training is performed, and determining a loss of the first wrong token at the time, based on the determined posterior probability vector. The method further includes determining a total loss of a training set of the model of which the cross-entropy training is performed, based on the determined loss of the first wrong token, and updating the model of which the cross-entropy training is performed, based on the determined total loss of the training set.Type: ApplicationFiled: May 11, 2021Publication date: August 26, 2021Applicant: TENCENT AMERICA LLCInventors: Peidong WANG, Jia CUI, Chao WENG, Dong YU
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Patent number: 11037547Abstract: A method of attention-based end-to-end (A-E2E) automatic speech recognition (ASR) training, includes performing cross-entropy training of a model, based on one or more input features of a speech signal, determining a posterior probability vector at a time of a first wrong token among one or more output tokens of the model of which the cross-entropy training is performed, and determining a loss of the first wrong token at the time, based on the determined posterior probability vector. The method further includes determining a total loss of a training set of the model of which the cross-entropy training is performed, based on the determined loss of the first wrong token, and updating the model of which the cross-entropy training is performed, based on the determined total loss of the training set.Type: GrantFiled: February 14, 2019Date of Patent: June 15, 2021Assignee: TENCENT AMERICA LLCInventors: Peidong Wang, Jia Cui, Chao Weng, Dong Yu
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Patent number: 10923117Abstract: A method for selecting an optimal language model weight (LMW) used to perform automatic speech recognition, including decoding test audio into a lattice using a language model; analyzing the lattice using a first LMW of a plurality of LMWs to determine a first plurality of best paths; analyzing the lattice using a second LMW of the plurality of LMWs to determine a second plurality of best paths; determining a first best path change rate (BCPR) corresponding to the first LMW based on a number of best path changes between the first plurality of best paths and the second plurality of best paths; and determining the first LMW to be the optimal LMW based on the first BCPR being a lowest BCPR from among a plurality of BCPRs corresponding to the plurality of LMWs.Type: GrantFiled: February 19, 2019Date of Patent: February 16, 2021Assignee: TENCENT AMERICA LLCInventors: Peidong Wang, Jia Cui, Chao Weng, Dong Yu
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Patent number: 10861441Abstract: A method of attention-based end-to-end (E2E) automatic speech recognition (ASR) training, includes performing cross-entropy training of a model, based on one or more input features of a speech signal, performing beam searching of the model of which the cross-entropy training is performed, to generate an n-best hypotheses list of output hypotheses, and determining a one-best hypothesis among the generated n-best hypotheses list. The method further includes determining a character-based gradient and a word-based gradient, based on the model of which the cross-entropy training is performed and a loss function in which a distance between a reference sequence and the determined one-best hypothesis is maximized, and performing backpropagation of the determined character-based gradient and the determined word-based gradient to the model, to update the model.Type: GrantFiled: February 14, 2019Date of Patent: December 8, 2020Assignee: TENCENT AMERICA LLCInventors: Peidong Wang, Jia Cui, Chao Weng, Dong Yu
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Publication number: 20200300770Abstract: An embodiment of a laser induced breakdown system is described that comprises a portable device that includes: a laser configured to produce a beam comprising a plurality of repeating pulses; a processor configured to open a data acquisition window after a delay period, wherein the delay period begins upon production of one of the pulses; one or more optical elements configured to direct the beam at a sample and collect emitted light from a plasma continuum; and an optical detector configured to produce a plurality of signal values from the emitted light from the plasma continuum collected during the data acquisition window, wherein the processor is configured to identify an element from the signal values.Type: ApplicationFiled: June 4, 2020Publication date: September 24, 2020Inventors: Peidong Wang, Rong SUN, Brendan FALVEY, Haowen LI, Yu SHEN, Michael DUGAS
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Publication number: 20200265830Abstract: A method of attention-based end-to-end (A-E2E) automatic speech recognition (ASR) training, includes performing cross-entropy training of a model, based on one or more input features of a speech signal, determining a posterior probability vector at a time of a first wrong token among one or more output tokens of the model of which the cross-entropy training is performed, and determining a loss of the first wrong token at the time, based on the determined posterior probability vector. The method further includes determining a total loss of a training set of the model of which the cross-entropy training is performed, based on the determined loss of the first wrong token, and updating the model of which the cross-entropy training is performed, based on the determined total loss of the training set.Type: ApplicationFiled: February 14, 2019Publication date: August 20, 2020Applicant: TENCENT AMERICA LLCInventors: Peidong WANG, Jia Cui, Chao Weng, Dong Yu
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Publication number: 20200265831Abstract: A method of attention-based end-to-end (E2E) automatic speech recognition (ASR) training, includes performing cross-entropy training of a model, based on one or more input features of a speech signal, performing beam searching of the model of which the cross-entropy training is performed, to generate an n-best hypotheses list of output hypotheses, and determining a one-best hypothesis among the generated n-best hypotheses list. The method further includes determining a character-based gradient and a word-based gradient, based on the model of which the cross-entropy training is performed and a loss function in which a distance between a reference sequence and the determined one-best hypothesis is maximized, and performing backpropagation of the determined character-based gradient and the determined word-based gradient to the model, to update the model.Type: ApplicationFiled: February 14, 2019Publication date: August 20, 2020Applicant: Tencent America LLCInventors: Peidong WANG, Jia CUI, Chao WENG, Dong YU
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Publication number: 20200265833Abstract: A method for selecting an optimal language model weight (LMW) used to perform automatic speech recognition, including decoding test audio into a lattice using a language model; analyzing the lattice using a first LMW of a plurality of LMWs to determine a first plurality of best paths; analyzing the lattice using a second LMW of the plurality of LMWs to determine a second plurality of best paths; determining a first best path change rate (BCPR) corresponding to the first LMW based on a number of best path changes between the first plurality of best paths and the second plurality of best paths; and determining the first LMW to be the optimal LMW based on the first BCPR being a lowest BCPR from among a plurality of BCPRs corresponding to the plurality of LMWs.Type: ApplicationFiled: February 19, 2019Publication date: August 20, 2020Applicant: TENCENT AMERICA LLCInventors: Peidong WANG, Jai CUI, Chao WENG, Dong YU
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Patent number: 10718716Abstract: An embodiment of a laser induced breakdown system is described that comprises a portable device that includes: a laser configured to produce a beam comprising a plurality of repeating pulses; a processor configured to open a data acquisition window after a delay period, wherein the delay period begins upon production of one of the pulses; one or more optical elements configured to direct the beam at a sample and collect emitted light from a plasma continuum; and an optical detector configured to produce a plurality of signal values from the emitted light from the plasma continuum collected during the data acquisition window, wherein the processor is configured to identify an element from the signal values.Type: GrantFiled: May 24, 2019Date of Patent: July 21, 2020Assignee: THERMO SCIENTIFIC PORTABLE ANALYTICAL INSTRUMENTS INC.Inventors: Peidong Wang, Rong Sun, Brendan Falvey, Haowen Li, Yu Shen, Michael E. Dugas
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Patent number: 10475780Abstract: A method for configuring level shifter spare cells includes providing a power rail connectable to a corresponding power domain, and providing a spare cell including a level shifter circuit. The level shifter circuit has first and second terminals that are connectable to the power rail, and the first and second terminals are floating with respect to the power rail.Type: GrantFiled: September 14, 2017Date of Patent: November 12, 2019Assignee: NXP USA, Inc.Inventors: Zhe Ge, Miaolin Tan, Peidong Wang
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Publication number: 20190310201Abstract: An embodiment of a laser induced breakdown system is described that comprises a portable device that includes: a laser configured to produce a beam comprising a plurality of repeating pulses; a processor configured to open a data acquisition window after a delay period, wherein the delay period begins upon production of one of the pulses; one or more optical elements configured to direct the beam at a sample and collect emitted light from a plasma continuum; and an optical detector configured to produce a plurality of signal values from the emitted light from the plasma continuum collected during the data acquisition window, wherein the processor is configured to identify an element from the signal values.Type: ApplicationFiled: May 24, 2019Publication date: October 10, 2019Applicant: THERMO SCIENTIFIC PORTABLE ANALYTICAL INSTRUMENTS INC.Inventors: Peidong WANG, Rong SUN, Brendan FALVEY, Haowen LI, Yu SHEN, Michael E. DUGAS
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Publication number: 20190140642Abstract: An isolation cell clamps a signal passing from a first, powered-down power domain to a second, power-on power domain. To reduce leakage current, some of the circuits and devices are connected to a voltage supply of the first or “from” power domain, while other circuits and devices are connected to a voltage supply of the second or “to” power domain.Type: ApplicationFiled: March 15, 2018Publication date: May 9, 2019Inventors: PEIDONG WANG, Miaolin Tan, Zhe Ge
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Patent number: 10263619Abstract: An isolation cell clamps a signal passing from a first, powered-down power domain to a second, power-on power domain. To reduce leakage current, some of the circuits and devices are connected to a voltage supply of the first or “from” power domain, while other circuits and devices are connected to a voltage supply of the second or “to” power domain.Type: GrantFiled: March 15, 2018Date of Patent: April 16, 2019Assignee: NXP USA, INC.Inventors: Peidong Wang, Miaolin Tan, Zhe Ge
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Publication number: 20190067263Abstract: A method for configuring level shifter spare cells includes providing a power rail connectable to a corresponding power domain, and providing a spare cell including a level shifter circuit. The level shifter circuit has first and second terminals that are connectable to the power rail, and the first and second terminals are floating with respect to the power rail.Type: ApplicationFiled: September 14, 2017Publication date: February 28, 2019Inventors: Zhe Ge, Miaolin Tan, Peidong Wang
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Patent number: 10196075Abstract: A railway vehicle and an axle box structure thereof are provided. The axle box structure includes an axle box body and a positioning node mounting seat. The axle box body includes an upper box body and a lower box body. The upper box body and the lower box body enclose a bearing mounting chamber together. A lower end surface of the upper box body has a convex portion, and an upper end surface of the lower box body has a concave portion. A first semi-circular hole and a second semi-circular hole are respectively provided at the middle of the upper box body and the lower box body. If the convex portion and the concave portion are assembled in a sealed coupling manner, the bearing mounting chamber is formed by the first semi-circular hole and the second semi-circular hole.Type: GrantFiled: November 16, 2015Date of Patent: February 5, 2019Assignee: CRRC QINGDAO SIFANG CO., LTD.Inventors: Peidong Wang, Pingyu Zhou, Xiaojiang Zhou, Xiaojun Lv, Daqiang Wang
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Publication number: 20180170410Abstract: A railway vehicle and an axle box structure thereof are provided. The axle box structure includes an axle box body and a positioning node mounting seat. The axle box body includes an upper box body and a lower box body. The upper box body and the lower box body enclose a bearing mounting chamber together. A lower end surface of the upper box body has a convex portion, and an upper end surface of the lower box body has a concave portion. A first semi-circular hole and a second semi-circular hole are respectively provided at the middle of the upper box body and the lower box body. If the convex portion and the concave portion are assembled in a sealed coupling manner, the bearing mounting chamber is formed by the first semi-circular hole and the second semi-circular hole.Type: ApplicationFiled: November 16, 2015Publication date: June 21, 2018Applicant: CRRC QINGDAO SIFANG CO., LTD.Inventors: Peidong WANG, Pingyu ZHOU, Xiaojiang ZHOU, Xiaojun LV, Daqiang WANG
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Patent number: 10001443Abstract: A method of identifying the presence of heroin in an impure heroin composition which contains heroin and at least one fluorescent contaminant which interferes with a Raman signal from the heroin. The method may include contacting the mixture with a solvent such as an alcohol, then contacting the resulting alcohol composition with a SERS surface. The surface may then be exposed to laser light from a hand-held Raman spectrometer to detect a Raman signal from the heroin. An apparatus for performing the method is also provided.Type: GrantFiled: January 15, 2016Date of Patent: June 19, 2018Assignee: Thermo Scientific Portable Analytical Instruments Inc.Inventors: Craig Morris Gardner, Michael Derek Hargreaves, Peidong Wang, Yu Shen
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Patent number: 9838013Abstract: A multi-bit clock gating cell is used in an integrated circuit (IC) in place of single bit clock gating cells to reduce power consumption. A physical design method is used to form a clock tree of the IC. Initial positions of clock gating cells are defined with respective initial clock input paths. Selected clock gating cells are moved to modified positions in which they may be adjoining. Adjoining cells are merged by substituting a multi-bit clock gating cell having multiple gating signal inputs, corresponding gated clock outputs, and a common clock input path. A net reduction is obtained for the overall capacitance of the clock path due to reduction of the upstream capacitance of the clock path and of the resulting multi-bit clock gating cell itself, compared with the aggregate capacitance of the clock paths of the corresponding clock gating cells before moving and merging.Type: GrantFiled: November 20, 2016Date of Patent: December 5, 2017Assignee: NXP USA, INC.Inventors: Zhe Ge, Huabin Du, Miaolin Tan, Peidong Wang