Patents by Inventor Li Lu
Li Lu 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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Patent number: 9472190Abstract: A method of recognizing speech is provided that includes generating a decoding network that includes a primary sub-network and a classification sub-network. The primary sub-network includes a classification node corresponding to the classification sub-network. The classification sub-network corresponds to a group of uncommon words. A speech input is received and decoded by instantiating a token in the primary sub-network and passing the token through the primary network. When the token reaches the classification node, the method includes transferring the token to the classification sub-network and passing the token through the classification sub-network. When the token reaches an accept node of the classification sub-network, the method includes returning a result of the token passing through the classification sub-network to the primary sub-network. The result includes one or more words in the group of uncommon words. A string corresponding to the speech input is output that includes the one or more words.Type: GrantFiled: April 28, 2014Date of Patent: October 18, 2016Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Shuai Yue, Li Lu, Xiang Zhang, Dadong Xie, Bo Chen, Feng Rao
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Patent number: 9466289Abstract: An electronic device with one or more processors and memory trains an acoustic model with an international phonetic alphabet (IPA) phoneme mapping collection and audio samples in different languages, where the acoustic model includes: a foreground model; and a background model. The device generates a phone decoder based on the trained acoustic model. The device collects keyword audio samples, decodes the keyword audio samples with the phone decoder to generate phoneme sequence candidates, and selects a keyword phoneme sequence from the phoneme sequence candidates. After obtaining the keyword phoneme sequence, the device detects one or more keywords in an input audio signal with the trained acoustic model, including: matching phonemic keyword portions of the input audio signal with phonemes in the keyword phoneme sequence with the foreground model; and filtering out phonemic non-keyword portions of the input audio signal with the background model.Type: GrantFiled: December 11, 2013Date of Patent: October 11, 2016Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Li Lu, Xiang Zhang, Shuai Yue, Feng Rao, Eryu Wang, Lu Li
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Publication number: 20160293184Abstract: Methods and computer systems for audio search on a social networking platform are disclosed. The method includes: while running a social networking application, receiving a first audio input from a user of the computer system, the first audio input including one or more search keywords; generating a first audio confusion network from the first audio input; determining whether the first audio confusion network matches at least one of one or more second audio confusion networks, wherein a respective second audio confusion network was generated from a corresponding second audio input associated with a Chat session of which the user is a participant; and identifying a second audio input corresponding to the at least one second audio confusion network that matches the first audio confusion network, wherein the identified second audio input includes the one or more search keywords that are included in the first audio input.Type: ApplicationFiled: June 7, 2016Publication date: October 6, 2016Inventors: Lu LI, Jianxiong MA, Li LU
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Publication number: 20160275699Abstract: An oil leakage detector of the present invention includes an image processing unit wherein the image processing unit calculates the values of saturation and intensity of each pixel in the color image of the object after an ultra-violet light is irradiated thereon, draws an intensity-saturation characteristic line of the saturation expressed in an X-axis and the intensity expressed in a Y-axis, sets an upper limit and a lower limit of intensity of each saturation as a threshold value based on an area without oil adhesion on the surface of the object, and determines, in the intensity-saturation characteristic line, an area corresponding to a pixel group where the intensity exceeds the threshold value of the upper limit and a pixel group where the intensity falls below the threshold value of the lower limit, to be an oil leakage adhered area.Type: ApplicationFiled: February 25, 2016Publication date: September 22, 2016Inventors: Li LU, Satoshi ICHIMURA, Tomohiro MORIYAMA, Jun NUKAGA, Toshiaki ROKUNOHE, Akira YAMAGISHI, Yasutomo SAITO
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Patent number: 9442910Abstract: A method and system for adding punctuation to a voice file is disclosed. The method includes: utilizing silence or pause duration detection to divide a voice file into a plurality of speech segments for processing, the voice file includes a plurality of features units; identifying all features units that appear in the voice file according to every term or expression and semantics features of the every term or expression that form each of the plurality of speech segments; using a linguistic model to determine a sum of weight of various punctuation modes in the voice file according to all the feature units, the linguistic model is built upon semantics features of various parsed out terms or expressions from a body text of a spoken sentence according to a language library; and adding punctuations to the voice file based on the determined sum of weight of the various punctuation modes.Type: GrantFiled: March 19, 2014Date of Patent: September 13, 2016Assignee: Tencent Technology (Shenzhen) Co., Ltd.Inventors: Haibo Liu, Eryu Wang, Xiang Zhang, Li Lu, Shuai Yue, Bo Chen, Lou Li, Jian Liu
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Publication number: 20160252409Abstract: Systems and methods for sensing temperature on a chip are described herein. In one aspect, a temperature sensing system includes a sensing circuit with matching diode devices for providing corresponding diode voltages proportional to currents through the diode devices. The system also includes a digital code calculation unit for generating a plurality of digital code values based on first and second reference voltages and the diode voltages and a digital calibration engine configured for computing a calibrated temperature based on the plurality of digital codes. The system further includes a switching circuit for routing the diode voltages, during first and second times, to diode voltage input terminals of the digital code calculation unit.Type: ApplicationFiled: February 27, 2015Publication date: September 1, 2016Inventors: Li Lu, Masoud Roham, Liang Dai, Anand Meruva
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Patent number: 9421933Abstract: An active glove box door is provided for a vehicle passenger compartment. A plastic-molded inner door liner forms a reaction plate. A plastic-molded front trim wall deploys toward a passenger in the passenger compartment. A plastic-molded bladder member is joined along an outer perimeter with the trim wall by a hot weld seam to form an inflatable bladder. The bladder member includes at least one substantially circumferential pleat adjacent the weld seam and a central attachment region with a plurality of attachment bosses joined to the inner door liner. A skeleton member is mounted to the inner door liner between the bladder member and the inner door liner, wherein the skeleton member has a lattice structure for reducing flexing of the inner door liner. The skeleton member has at least one aperture receiving a respective attachment boss.Type: GrantFiled: April 21, 2015Date of Patent: August 23, 2016Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Nicholas A. Mazzocchi, Li Lu, Sean B. West, Stacey H. Raines
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Patent number: 9396724Abstract: A method includes: acquiring data samples; performing categorized sentence mining in the acquired data samples to obtain categorized training samples for multiple categories; building a text classifier based on the categorized training samples; classifying the data samples using the text classifier to obtain a class vocabulary and a corpus for each category; mining the corpus for each category according to the class vocabulary for the category to obtain a respective set of high-frequency language templates; training on the templates for each category to obtain a template-based language model for the category; training on the corpus for each category to obtain a class-based language model for the category; training on the class vocabulary for each category to obtain a lexicon-based language model for the category; building a speech decoder according to an acoustic model, the class-based language model and the lexicon-based language model for any given field, and the data samples.Type: GrantFiled: February 14, 2014Date of Patent: July 19, 2016Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Feng Rao, Li Lu, Bo Chen, Xiang Zhang, Shuai Yue, Lu Li
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Patent number: 9396723Abstract: A method and a device for training an acoustic language model, include: conducting word segmentation for training samples in a training corpus using an initial language model containing no word class labels, to obtain initial word segmentation data containing no word class labels; performing word class replacement for the initial word segmentation data containing no word class labels, to obtain first word segmentation data containing word class labels; using the first word segmentation data containing word class labels to train a first language model containing word class labels; using the first language model containing word class labels to conduct word segmentation for the training samples in the training corpus, to obtain second word segmentation data containing word class labels; and in accordance with the second word segmentation data meeting one or more predetermined criteria, using the second word segmentation data containing word class labels to train the acoustic language model.Type: GrantFiled: December 17, 2013Date of Patent: July 19, 2016Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Duling Lu, Lu Li, Feng Rao, Bo Chen, Li Lu, Xiang Zhang, Eryu Wang, Shuai Yue
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Publication number: 20160184425Abstract: The present invention relates to methods and compositions for enhancing delivery of vaccine antigens to the mucosal epithelium, the composition comprising an antigen from an infectious agent fused with an Fc fragment of an immunoglobulin recognized by the neonatal receptors (FcRn). The composition is effective in eliciting a protective long-term memory T cell immune response against infection at a distant mucosal site.Type: ApplicationFiled: December 8, 2015Publication date: June 30, 2016Applicant: University of Maryland, College ParkInventors: Xiaoping Zhu, Lilin Ye, Li Lu
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Patent number: 9379731Abstract: A device and method for analog to digital conversion is disclosed. The device can have a first amplifier operable to receive an input voltage and output a first control signal. The device can also have a first voltage-controlled oscillator (VCO) operably coupled to the first amplifier and configured to output a first signal based on the first control signal, the first signal having a sensor frequency. The device can also have a first switched-capacitor resistor operably coupled to the first VCO and to the first amplifier, the first switched-capacitor resistor configured to receive and be controlled by the sensor frequency. The device can also have a sensor counter operably coupled to the first VCO and configured produce a sensor count based on the sensor frequency. The device can also have a register configured provide a digital output proportional to the input voltage based on the sensor count.Type: GrantFiled: September 23, 2015Date of Patent: June 28, 2016Assignee: QUALCOMM INCORPORATEDInventors: Masoud Roham, Mohammad Meysam Zargham, Li Lu
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Patent number: 9355637Abstract: A method and an apparatus are provided for retrieving keyword. The apparatus configures at least two types of language models in a model file, where each type of language model includes a recognition model and a corresponding decoding model; the apparatus extracts a speech feature from the to-be-processed speech data; performs language matching on the extracted speech feature by using recognition models in the model file one by one, and determines a recognition model based on a language matching rate; and determines a decoding model corresponding to the recognition model; decoding the extracted speech feature by using the determined decoding model, and obtains a word recognition result after the decoding; and matches a keyword in a keyword dictionary and the word recognition result, and outputs a matched keyword.Type: GrantFiled: February 11, 2015Date of Patent: May 31, 2016Assignee: Tencent Technology (Shenzhen) Company LimitedInventors: Jianxiong Ma, Lu Li, Li Lu, Xiang Zhang, Shuai Yue, Feng Rao, Eryu Wang, Linghui Kong
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Patent number: 9336197Abstract: A method is implemented at a computer to determine that certain information content is composed or compiled in a specific language selected among two or more similar languages. The computer integrates a first vocabulary list of a first language and a second vocabulary list of a second language into a comprehensive vocabulary list. The integrating includes analyzing the first vocabulary list in view of the second vocabulary list to identify a first vocabulary sub-list that is used in the first language, but not in the second language. The computer then identifies, in the information content, a plurality of expressions that are included in the comprehensive vocabulary list, and a subset of expressions that are included in the first vocabulary sub-list. Upon a determination that a total frequency of occurrence of the subset of expressions meets predetermined occurrence criteria, the computer determines that the information content is composed in the first language.Type: GrantFiled: December 16, 2013Date of Patent: May 10, 2016Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Lu Li, Qiang Cheng, Jianxiong Ma, Feng Rao, Duling Lu, Li Lu, Xiang Zhang, Bo Chen
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Publication number: 20160105117Abstract: An isolated power control device that includes an auxiliary isolated power circuit and a voltage level identification unit is provided. The auxiliary isolated power circuit includes a transformer module, a control module, and a switch module. The transformer module includes a primary side and a secondary side. The control module generates a switch control signal according to a primary side remote on/off control signal. The switch module is conducted according to the switch control signal to transmit an input auxiliary power signal to the primary side of the transformer module such that the auxiliary isolated power circuit generates a target voltage signal having a plurality of voltage levels. The voltage level identification unit receives the target voltage signal to output a secondary side remote on-off control signal to control a main isolated power device.Type: ApplicationFiled: October 7, 2015Publication date: April 14, 2016Inventors: Zhong-Wang YANG, Sheng-Li LU, Wen-Hua LI, Qiong ZHANG
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Publication number: 20160086609Abstract: The present application discloses a method, an electronic system and a non-transitory computer readable storage medium for recognizing audio commands in an electronic device. The electronic device obtains audio data based on an audio signal provided by a user and extracts characteristic audio fingerprint features from the audio data. The electronic device further determines whether the corresponding audio signal is generated by an authorized user by comparing the characteristic audio fingerprint features with an audio fingerprint model for the authorized user and with a universal background model that represents user-independent audio fingerprint features, respectively. When the corresponding audio signal is generated by the authorized user of the electronic device, an audio command is extracted from the audio data, and an operation is performed according to the audio command.Type: ApplicationFiled: December 3, 2015Publication date: March 24, 2016Inventors: Shuai Yue, Xiang Zhang, Li Lu, Feng Rao, Eryu Wang, Haibo Liu, Bo Chen, Jian Liu, Lu Li
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Publication number: 20160062640Abstract: A method for browsing data on an electronic device includes detecting touch input on a touch display of the electronic device and determining whether a contact point of the touch input on the touch display corresponds to a designated window displayed on the touch display. When the contact point does not correspond to the designated window, a designated window displaying a corresponding interface therein is creatable at the contact point when a pressure value of the touch input is greater than or equal to a first threshold pressure value. When the contact point corresponds to the designated window, a size of the designated window is adjusted according to a pressure value of the touch input at the contact point. The designated window is closed when the pressure value of the touch input is greater than or equal to a second threshold pressure value.Type: ApplicationFiled: September 1, 2015Publication date: March 3, 2016Inventor: WEI-LI LU
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Patent number: 9257118Abstract: A method and an apparatus are provided for retrieving keyword. The apparatus configures at least two types of language models in a model file, where each type of language model includes a recognition model and a corresponding decoding model; the apparatus extracts a speech feature from the to-be-processed speech data; performs language matching on the extracted speech feature by using recognition models in the model file one by one, and determines a recognition model based on a language matching rate; and determines a decoding model corresponding to the recognition model; decoding the extracted speech feature by using the determined decoding model, and obtains a word recognition result after the decoding; and matches a keyword in a keyword dictionary and the word recognition result, and outputs a matched keyword.Type: GrantFiled: February 11, 2015Date of Patent: February 9, 2016Assignee: Tencent Technology (Shenzhen) Company LimitedInventors: Jianxiong Ma, Lu Li, Li Lu, Xiang Zhang, Shuai Yue, Feng Rao, Eryu Wang, Linghui Kong
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Patent number: 9238683Abstract: The present invention relates to methods and compositions for enhancing delivery of vaccine antigens to the mucosal epithelium, the composition comprising an antigen from an infectious agent fused with an Fc fragment of an immunoglobulin recognized by the neonatal receptors (FcRn). The composition is effective in eliciting a protective long-term memory T cell immune response against infection at a distant mucosal site.Type: GrantFiled: February 23, 2011Date of Patent: January 19, 2016Assignee: UNIVERSITY OF MARYLAND COLLEGE PARKInventors: Xiaoping Zhu, Lilin Ye, Li Lu
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Patent number: 9230541Abstract: This application discloses a method implemented of recognizing a keyword in a speech that includes a sequence of audio frames further including a current frame and a subsequent frame. A candidate keyword is determined for the current frame using a decoding network that includes keywords and filler words of multiple languages, and used to determine a confidence score for the audio frame sequence. A word option is also determined for the subsequent frame based on the decoding network, and when the candidate keyword and the word option are associated with two distinct types of languages, the confidence score of the audio frame sequence is updated at least based on a penalty factor associated with the two distinct types of languages. The audio frame sequence is then determined to include both the candidate keyword and the word option by evaluating the updated confidence score according to a keyword determination criterion.Type: GrantFiled: December 11, 2014Date of Patent: January 5, 2016Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: Lu Ll, Li Lu, Jianxiong Ma, Linghui Kong, Feng Rao, Shuai Yue, Xiang Zhang, Haibo Liu, Eryu Wang, Bo Chen
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Publication number: 20150381073Abstract: An inverter control method, apparatus, and system are provided. The method in the embodiments of the present invention includes obtaining power distribution line graph of an inverter switch according to an output power and an input voltage that are of an inverter; when an area to which the inverter belongs is a first area and the inverter switch works at a second frequency, switching the inverter switch to a first frequency; and when the area to which the inverter belongs is a second area and the inverter switch works at the first frequency, switching the inverter switch to the second frequency. In the embodiments of the present invention, whether a working frequency of an inverter switch needs to be changed is determined according to an output power and an input voltage, which improves control efficiency, thereby effectively improving conversion efficiency of an inverter.Type: ApplicationFiled: June 23, 2015Publication date: December 31, 2015Inventors: Haibin Guo, Kai Xin, Li Lu